fix: Absolute paths for -f not working on Windows (#721)

Fixes #718

.circleci/config.yml

@@ -4,22 +4,39 @@ jobs:
 
   build:
     docker:
-      - image: circleci/golang:1.11.2
-    working_directory: /go/src/github.com/roboll/helmfile
+      - image: circleci/golang:1.12.4
+    environment:
+      GOPATH: /go
+    working_directory: /home/circleci/workspace/helmfile
     steps:
       - checkout
+      - restore_cache:
+          keys:
+          - go-mod-cache-v1-{{ checksum "./go.sum" }}
+          - go-mod-cache-v1-
+      - run: go env
       - run: make build
+      - save_cache:
+          key: go-mod-cache-v1-{{ checksum "./go.sum" }}
+          paths:
+          - /go/pkg/mod
       - persist_to_workspace:
-          root: /go/src/github.com/roboll/helmfile
+          root: ./
           paths:
             - .
 
   test:
+    environment:
+      GOPATH: /go
     docker:
-      - image: circleci/golang:1.11.2
-    working_directory: /go/src/github.com/roboll/helmfile
+      - image: circleci/golang:1.12.4
+    working_directory: /home/circleci/workspace/helmfile
     steps:
       - checkout
+      - restore_cache:
+          keys:
+          - go-mod-cache-v1-{{ checksum "./go.sum" }}
+          - go-mod-cache-v1-
       - run: make check
       - run: make pristine
       - run: make test
@@ -74,16 +91,21 @@ jobs:
 
   release:
     docker:
-      - image: circleci/golang:1.11.2
-    working_directory: /go/src/github.com/roboll/helmfile
+      - image: circleci/golang:1.12.4
+    working_directory: /home/circleci/workspace/helmfile
     steps:
     - checkout
+    - restore_cache:
+        keys:
+        - go-mod-cache-v1-{{ checksum "./go.sum" }}
+        - go-mod-cache-v1-
     - setup_remote_docker
     - run:
         command: |
           docker login -u="$DOCKER_USER" -p="$DOCKER_PASS" quay.io
           make tools
-          BUILD_URL="$CIRCLE_BUILD_URL" make push release
+          go mod vendor
+          ORG=roboll BUILD_URL="$CIRCLE_BUILD_URL" make push release
 
 workflows:
   version: 2

Dockerfile

@@ -1,8 +1,8 @@
-FROM golang:1.11.2-alpine3.8 as builder
+FROM golang:1.12.4-alpine3.9 as builder
 
 RUN apk add --no-cache make git
-WORKDIR /go/src/github.com/roboll/helmfile/
-COPY . /go/src/github.com/roboll/helmfile/
+WORKDIR /workspace/helmfile
+COPY . /workspace/helmfile
 RUN make static-linux
 
 # -----------------------------------------------------------------------------
@@ -22,8 +22,10 @@ RUN wget ${HELM_LOCATION}/${HELM_FILENAME} && \
 
 RUN mkdir -p "$(helm home)/plugins"
 RUN helm plugin install https://github.com/databus23/helm-diff && \
-    helm plugin install https://github.com/futuresimple/helm-secrets
+    helm plugin install https://github.com/futuresimple/helm-secrets && \
+    helm plugin install https://github.com/hypnoglow/helm-s3.git && \
+    helm plugin install https://github.com/aslafy-z/helm-git.git
 
-COPY --from=builder /go/src/github.com/roboll/helmfile/dist/helmfile_linux_amd64 /usr/local/bin/helmfile
+COPY --from=builder /workspace/helmfile/dist/helmfile_linux_amd64 /usr/local/bin/helmfile
 
 CMD ["/usr/local/bin/helmfile"]

Gopkg.lock

@@ -1,121 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  digest = "1:d9141c149f722217d35834972878499a4781fe5ae46a152e8ac843ff15efc80f"
-  name = "github.com/Masterminds/semver"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "8d82589cda2d7b5b9167396841975c4535c9bec6"
-  version = "v1.4.1"
-
-[[projects]]
-  digest = "1:46a054a232ea2b7f0a35398d682b433d26ba9975fce9197b1784824402059f5b"
-  name = "github.com/Masterminds/sprig"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "6b2a58267f6a8b1dc8e2eb5519b984008fa85e8c"
-  version = "v2.15.0"
-
-[[projects]]
-  digest = "1:8f5416c7f59da8600725ae1ff00a99af1da8b04c211ae6f3c8f8bcab0164f650"
-  name = "github.com/aokoli/goutils"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "3391d3790d23d03408670993e957e8f408993c34"
-  version = "v1.0.1"
-
-[[projects]]
-  digest = "1:8f8811f9be822914c3a25c6a071e93beb4c805d7b026cbf298bc577bc1cc945b"
-  name = "github.com/google/uuid"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "064e2069ce9c359c118179501254f67d7d37ba24"
-  version = "0.2"
-
-[[projects]]
-  digest = "1:6b1e7618931d0ed9a17fec1c1d84271907aa61172c50b8272327f6cd4fafb650"
-  name = "github.com/huandu/xstrings"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "2bf18b218c51864a87384c06996e40ff9dcff8e1"
-  version = "v1.0.0"
-
-[[projects]]
-  digest = "1:8eb1de8112c9924d59bf1d3e5c26f5eaa2bfc2a5fcbb92dc1c2e4546d695f277"
-  name = "github.com/imdario/mergo"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "9f23e2d6bd2a77f959b2bf6acdbefd708a83a4a4"
-  version = "v0.3.6"
-
-[[projects]]
-  digest = "1:55d0f7127962b0657acfd69650634057b3a08958226feee1b64a379666bb915e"
-  name = "github.com/urfave/cli"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "6011f165dc288c72abd8acd7722f837c5c64198d"
-
-[[projects]]
-  digest = "1:3c1a69cdae3501bf75e76d0d86dc6f2b0a7421bc205c0cb7b96b19eed464a34d"
-  name = "go.uber.org/atomic"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "1ea20fb1cbb1cc08cbd0d913a96dead89aa18289"
-  version = "v1.3.2"
-
-[[projects]]
-  digest = "1:60bf2a5e347af463c42ed31a493d817f8a72f102543060ed992754e689805d1a"
-  name = "go.uber.org/multierr"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "3c4937480c32f4c13a875a1829af76c98ca3d40a"
-  version = "v1.1.0"
-
-[[projects]]
-  digest = "1:9580b1b079114140ade8cec957685344d14f00119e0241f6b369633cb346eeb3"
-  name = "go.uber.org/zap"
-  packages = [
-    ".",
-    "buffer",
-    "internal/bufferpool",
-    "internal/color",
-    "internal/exit",
-    "zapcore",
-  ]
-  pruneopts = "UT"
-  revision = "eeedf312bc6c57391d84767a4cd413f02a917974"
-  version = "v1.8.0"
-
-[[projects]]
-  branch = "master"
-  digest = "1:7b1c378a71f617ec07229a1fcbb90b6a5344295823e1d732398f50fd9ae4bbec"
-  name = "golang.org/x/crypto"
-  packages = [
-    "pbkdf2",
-    "scrypt",
-  ]
-  pruneopts = "UT"
-  revision = "b2aa35443fbc700ab74c586ae79b81c171851023"
-
-[[projects]]
-  branch = "v2"
-  digest = "1:342378ac4dcb378a5448dd723f0784ae519383532f5e70ade24132c4c8693202"
-  name = "gopkg.in/yaml.v2"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "5420a8b6744d3b0345ab293f6fcba19c978f1183"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  input-imports = [
-    "github.com/Masterminds/sprig",
-    "github.com/imdario/mergo",
-    "github.com/urfave/cli",
-    "go.uber.org/zap",
-    "go.uber.org/zap/zapcore",
-    "gopkg.in/yaml.v2",
-  ]
-  solver-name = "gps-cdcl"
-  solver-version = 1

Gopkg.toml

@@ -1,15 +0,0 @@
-[[constraint]]
-  name = "github.com/Masterminds/sprig"
-  version = "2.15.0"
-
-[[constraint]]
-  branch = "v2"
-  name = "gopkg.in/yaml.v2"
-
-[prune]
-  go-tests = true
-  unused-packages = true
-
-[[constraint]]
-  name = "github.com/imdario/mergo"
-  version = "0.3.6"

Makefile

@@ -42,7 +42,8 @@ clean:
 .PHONY: clean
 
 pristine: generate fmt
-	git ls-files --exclude-standard --modified --deleted --others | diff /dev/null -
+	git diff | cat
+	git ls-files --exclude-standard --modified --deleted --others -x vendor  | grep -v '^go.' | diff /dev/null -
 .PHONY: pristine
 
 release: pristine cross

README.md

@@ -1,18 +1,19 @@
-# helmfile [![CircleCI](https://circleci.com/gh/roboll/helmfile.svg?style=svg)](https://circleci.com/gh/roboll/helmfile)
+# Helmfile [![CircleCI](https://circleci.com/gh/roboll/helmfile.svg?style=svg)](https://circleci.com/gh/roboll/helmfile)
 
 Deploy Kubernetes Helm Charts
 
 [![Docker Repository on Quay](https://quay.io/repository/roboll/helmfile/status "Docker Repository on Quay")](https://quay.io/repository/roboll/helmfile)
+[![Slack Community #helmfile](https://slack.sweetops.com/badge.svg)](https://slack.sweetops.com)
 
-## status
+## Status
 
 Even though Helmfile is used in production environments [across multiple organizations](USERS.md), it is still in its early stage of development, hence versioned 0.x.
 
 Helmfile complies to Semantic Versioning 2.0.0 in which v0.x means that there could be backward-incompatible changes for every release.
 
-Note that we will try our best to document any backward incompatibility.
+Note that we will try our best to document any backward incompatibility. And in reality, helmfile had no breaking change for a year or so.
 
-## about
+## About
 
 Helmfile is a declarative spec for deploying helm charts. It lets you...
 
@@ -22,26 +23,51 @@ Helmfile is a declarative spec for deploying helm charts. It lets you...
 
 To avoid upgrades for each iteration of `helm`, the `helmfile` executable delegates to `helm` - as a result, `helm` must be installed.
 
-## configuration syntax
+## Highlights
 
-**CAUTION**: This documentation is for the development version of Helmfile. If you are looking for the documentation for any of releases, please switch to the corresponding release tag like [v0.31.0](https://github.com/roboll/helmfile/tree/v0.31.0).
+**Declarative**: Write, version-control, apply the desired state file for visibility and reproducibility.
+
+**Modules**: Modularize common patterns of your infrastructure, distribute it via Git, S3, etc. to be reused across the entire company (See [#648](https://github.com/roboll/helmfile/pull/648))
+
+**Versatility**: Manage your cluster consisting of charts, [kustomizations](https://github.com/kubernetes-sigs/kustomize), and directories of Kubernetes resources, turning everything to Helm releases (See [#673](https://github.com/roboll/helmfile/pull/673))
+
+**Patch**: JSON/Strategic-Merge Patch Kubernetes resources before `helm-install`ing, without forking upstream charts (See [#673](https://github.com/roboll/helmfile/pull/673))
+
+## Configuration
+
+**CAUTION**: This documentation is for the development version of Helmfile. If you are looking for the documentation for any of releases, please switch to the corresponding release tag like [v0.79.1](https://github.com/roboll/helmfile/tree/v0.79.1).
 
 The default helmfile is `helmfile.yaml`:
 
 ```yaml
+# Chart repositories used from within this state file
+#
+# Use `helm-s3` and `helm-git` and whatever Helm Downloader plugins
+# to use repositories other than the official repository or one backend by chartmuseum.
 repositories:
-  - name: roboll
-    url: http://roboll.io/charts
-    certFile: optional_client_cert
-    keyFile: optional_client_key
-    username: optional_username
-    password: optional_password
+# To use official "stable" charts a.k.a https://github.com/helm/charts/tree/master/stable
+- name: stable
+  url: https://kubernetes-charts.storage.googleapis.com
+# To use official "incubator" charts a.k.a https://github.com/helm/charts/tree/master/incubator
+- name: incubator
+  url: https://kubernetes-charts-incubator.storage.googleapis.com
+# helm-git powered repository: You can treat any Git repository as a charts repository
+- name: polaris
+  url: git+https://github.com/reactiveops/polaris@deploy/helm?ref=master
+# Advanced configuration: You can setup basic or tls auth
+- name: roboll
+  url: http://roboll.io/charts
+  certFile: optional_client_cert
+  keyFile: optional_client_key
+  username: optional_username
+  password: optional_password
 
 # context: kube-context # this directive is deprecated, please consider using helmDefaults.kubeContext
 
 #default values to set for args along with dedicated keys that can be set by contributers, cli args take precedence over these
 helmDefaults:
   tillerNamespace: tiller-namespace  #dedicated default key for tiller-namespace
+  tillerless: false                  #dedicated default key for tillerless
   kubeContext: kube-context          #dedicated default key for kube-context (--kube-context)
   # additional and global args passed to helm
   args:
@@ -52,7 +78,18 @@ helmDefaults:
   timeout: 600
   recreatePods: true
   force: true
+  # enable TLS for request to Tiller
+  tls: true
+  # path to TLS CA certificate file (default "$HELM_HOME/ca.pem")
+  tlsCACert: "path/to/ca.pem"
+  # path to TLS certificate file (default "$HELM_HOME/cert.pem")
+  tlsCert: "path/to/cert.pem"
+  # path to TLS key file (default "$HELM_HOME/key.pem")
+  tlsKey: "path/to/key.pem"
 
+# The desired states of Helm releases.
+#
+# Helmfile runs various helm commands to converge the current state in the live cluster to the desired state defined here.
 releases:
   # Published chart example
   - name: vault                            # name of this release
@@ -61,11 +98,21 @@ releases:
       foo: bar
     chart: roboll/vault-secret-manager     # the chart being installed to create this release, referenced by `repository/chart` syntax
     version: ~1.24.1                       # the semver of the chart. range constraint is supported
+    missingFileHandler: Warn # set to either "Error" or "Warn". "Error" instructs helmfile to fail when unable to find a values or secrets file. When "Warn", it prints the file and continues.
+    # Values files used for rendering the chart
     values:
-      # value files passed via --values
+      # Value files passed via --values
       - vault.yaml
-      # inline values, passed via a temporary values file and --values
+      # Inline values, passed via a temporary values file and --values, so that it doesn't suffer from type issues like --set
       - address: https://vault.example.com
+      # Go template available in inline values and values files.
+      - image:
+          # The end result is more or less YAML. So do `quote` to prevent number-like strings from accidentally parsed into numbers!
+          # See https://github.com/roboll/helmfile/issues/608
+          tag: {{ requiredEnv "IMAGE_TAG" | quote }}
+          # Otherwise:
+          #   tag: "{{ requiredEnv "IMAGE_TAG" }}"
+          #   tag: !!string {{ requiredEnv "IMAGE_TAG" }}
         db:
           username: {{ requiredEnv "DB_USERNAME" }}
           # value taken from environment variable. Quotes are necessary. Will throw an error if the environment variable is not set. $DB_PASSWORD needs to be set in the calling environment ex: export DB_PASSWORD='password1'
@@ -74,6 +121,8 @@ releases:
           # Interpolate environment variable with a fixed string
           domain: {{ requiredEnv "PLATFORM_ID" }}.my-domain.com
           scheme: {{ env "SCHEME" | default "https" }}
+    # Use `values` whenever possible!
+    # `set` translates to helm's `--set key=val`, that is known to suffer from type issues like https://github.com/roboll/helmfile/issues/608
     set:
     # single value loaded from a local file, translates to --set-file foo.config=path/to/file
     - name: foo.config
@@ -89,6 +138,8 @@ releases:
     # will attempt to decrypt it using helm-secrets plugin
     secrets:
       - vault_secret.yaml
+    # verify the chart before upgrading (only works with packaged charts not directories)
+    verify: true
     # wait for k8s resources via --wait. Defaults to `false`
     wait: true
     # time in seconds to wait for any individual Kubernetes operation (like Jobs for hooks, and waits on pod/pvc/svc/deployment readiness) (default 300)
@@ -101,16 +152,106 @@ releases:
     installed: true
     # restores previous state in case of failed release
     atomic: true
+    # name of the tiller namespace
+    tillerNamespace: vault
+    # if true, will use the helm-tiller plugin
+    tillerless: false
+    # enable TLS for request to Tiller
+    tls: true
+    # path to TLS CA certificate file (default "$HELM_HOME/ca.pem")
+    tlsCACert: "path/to/ca.pem"
+    # path to TLS certificate file (default "$HELM_HOME/cert.pem")
+    tlsCert: "path/to/cert.pem"
+    # path to TLS key file (default "$HELM_HOME/key.pem")
+    tlsKey: "path/to/key.pem"
+    # --kube-context to be passed to helm commands
+    # CAUTION: this doesn't work as expected for `tilerless: true`.
+    # See https://github.com/roboll/helmfile/issues/642
+    kubeContext: kube-context
 
   # Local chart example
   - name: grafana                            # name of this release
     namespace: another                       # target namespace
-    chart: ../my-charts/grafana              # the chart being installed to create this release, referenced by relative path to local chart
+    chart: ../my-charts/grafana              # the chart being installed to create this release, referenced by relative path to local helmfile
     values:
     - "../../my-values/grafana/values.yaml"             # Values file (relative path to manifest)
     - ./values/{{ requiredEnv "PLATFORM_ENV" }}/config.yaml # Values file taken from path with environment variable. $PLATFORM_ENV must be set in the calling environment.
     wait: true
 
+#
+# Advanced Configuration: Nested States
+#
+helmfiles:
+- # Path to the helmfile state file being processed BEFORE releases in this state file
+  path: path/to/subhelmfile.yaml
+  # Label selector used for filtering releases in the nested state.
+  # For example, `name=prometheus` in this context is equivalent to processing the nested state like
+  #   helmfile -f path/to/subhelmfile.yaml -l name=prometheus sync
+  selectors:
+  - name=prometheus
+  # Override state values
+  values:
+  # Values files merged into the nested state's values
+  - additiona.values.yaml
+  # Inline state values merged into the nested state's values
+  - key1: val1
+- # All the nested state files under `helmfiles:` is processed in the order of definition.
+  # So it can be used for preparation for your main `releases`. An example would be creating CRDs required by `releases` in the parent state file.
+  path: path/to/mycrd.helmfile.yaml
+- # Terraform-module-like URL for importing a remote directory and use a file in it as a nested-state file
+  # The nested-state file is locally checked-out along with the remote directory containing it.
+  # Therefore all the local paths in the file are resolved relative to the file
+  path: git::https://github.com/cloudposse/helmfiles.git@releases/kiam.yaml?ref=0.40.0
+
+#
+# Advanced Configuration: Environments
+#
+
+# The list of environments managed by helmfile.
+#
+# The default is `environments: {"default": {}}` which implies:
+#
+# - `{{ .Environment.Name }}` evaluates to "default"
+# - `{{ .Environment.Values }}` being empty
+environments:
+  # The "default" environment is available and used when `helmfile` is run without `--environment NAME`.
+  default:
+    # Everything from the values.yaml is available via `{{ .Environment.Values.KEY }}`.
+    # Suppose `{"foo": {"bar": 1}}` contained in the values.yaml below,
+    # `{{ .Environment.Values.foo.bar }}` is evaluated to `1`.
+    values:
+    - environments/default/values.yaml
+    # Each entry in values can be either a file path or inline values.
+    # The below is an example of inline values, which is merged to the `.Environment.Values`
+    - myChartVer: 1.0.0-dev
+  # Any environment other than `default` is used only when `helmfile` is run with `--environment NAME`.
+  # That is, the "production" env below is used when and only when it is run like `helmfile --environment production sync`.
+  production:
+    values:
+    - environment/production/values.yaml
+    - myChartVer: 1.0.0
+    ## `secrets.yaml` is decrypted by `helm-secrets` and available via `{{ .Environment.Secrets.KEY }}`
+    secrets:
+    - environment/production/secrets.yaml
+    # Instructs helmfile to fail when unable to find a environment values file listed under `environments.NAME.values`.
+    #
+    # Possible values are  "Error", "Warn", "Info", "Debug". The default is "Error".
+    #
+    # Use "Warn", "Info", or "Debug" if you want helmfile to not fail when a values file is missing, while just leaving
+    # a message about the missing file at the log-level.
+    missingFileHandler: Error
+
+#
+# Advanced Configuration: Layering
+#
+# Helmfile merges all the "base" state files and this state file before processing.
+#
+# Assuming this state file is named `helmfile.yaml`, all the files are merged in the order of:
+#   environments.yaml <- defaults.yaml <- templates.yaml <- helmfile.yaml
+bases:
+- environments.yaml
+- defaults.yaml
+- templates.yaml
 ```
 
 ## Templating
@@ -128,7 +269,7 @@ Environment variables can be used in most places for templating the helmfile. Cu
 Examples:
 
 ```yaml
-respositories:
+repositories:
 - name: your-private-git-repo-hosted-charts
   url: https://{{ requiredEnv "GITHUB_TOKEN"}}@raw.githubusercontent.com/kmzfs/helm-repo-in-github/master/
 ```
@@ -196,22 +337,29 @@ NAME:
 USAGE:
    helmfile [global options] command [command options] [arguments...]
 
+VERSION:
+   v0.70.0
+
 COMMANDS:
+     deps      update charts based on the contents of requirements.yaml
      repos     sync repositories from state file (helm repo add && helm repo update)
-     charts    sync releases from state file (helm upgrade --install)
+     charts    DEPRECATED: sync releases from state file (helm upgrade --install)
      diff      diff releases from state file against env (helm diff)
      template  template releases from state file against env (helm template)
      lint      lint charts from state file (helm lint)
      sync      sync all resources from state file (repos, releases and chart deps)
      apply     apply all resources from state file only when there are changes
      status    retrieve status of releases in state file
-     delete    delete releases from state file (helm delete)
+     delete    DEPRECATED: delete releases from state file (helm delete)
+     destroy   deletes and then purges releases
      test      test releases from state file (helm test)
 
 GLOBAL OPTIONS:
    --helm-binary value, -b value           path to helm binary
    --file helmfile.yaml, -f helmfile.yaml  load config from file or directory. defaults to helmfile.yaml or `helmfile.d`(means `helmfile.d/*.yaml`) in this preference
    --environment default, -e default       specify the environment name. defaults to default
+   --state-values-set value                set state values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)
+   --state-values-file value               specify state values in a YAML file
    --quiet, -q                             Silence output. Equivalent to log-level warn
    --kube-context value                    Set kubectl context. Uses current context by default
    --log-level value                       Set log level, default info
@@ -220,6 +368,7 @@ GLOBAL OPTIONS:
                                            A release must match all labels in a group in order to be used. Multiple groups can be specified at once.
                                            --selector tier=frontend,tier!=proxy --selector tier=backend. Will match all frontend, non-proxy releases AND all backend releases.
                                            The name of a release can be used as a label. --selector name=myrelease
+   --allow-no-matching-release             Do not exit with an error code if the provided selector has no matching releases.
    --interactive, -i                       Request confirmation before attempting to modify clusters
    --help, -h                              show help
    --version, -v                           print the version
@@ -227,13 +376,27 @@ GLOBAL OPTIONS:
 
 ### sync
 
-The `helmfile sync` sub-command sync your cluster state as described in your `helmfile`. The default helmfile is `helmfile.yaml`, but any yaml file can be passed by specifying a `--file path/to/your/yaml/file` flag.
+The `helmfile sync` sub-command sync your cluster state as described in your `helmfile`. The default helmfile is `helmfile.yaml`, but any YAML file can be passed by specifying a `--file path/to/your/yaml/file` flag.
 
 Under the covers, Helmfile executes `helm upgrade --install` for each `release` declared in the manifest, by optionally decrypting [secrets](#secrets) to be consumed as helm chart values. It also updates specified chart repositories and updates the
 dependencies of any referenced local charts.
 
 For Helm 2.9+ you can use a username and password to authenticate to a remote repository.
 
+### deps
+
+The `helmfile deps` sub-command locks your helmfile state and local charts dependencies.
+
+It basically runs `helm dependency update` on your helmfile state file and all the referenced local charts, so that you get a "lock" file per each helmfile state or local chart.
+
+All the other `helmfile` sub-commands like `sync` use chart versions recorded in the lock files, so that e.g. untested chart versions won't suddenly get deployed to the production environment.
+
+For example, the lock file for a helmfile state file named `helmfile.1.yaml` will be `helmfile.1.lock`. The lock file for a local chart would be `requirements.lock`, which is the same as `helm`.
+
+It is recommended to version-control all the lock files, so that they can be used in the production deployment pipeline for extra reproducibility.
+
+To bring in chart updates systematically, it would also be a good idea to run `helmfile deps` regularly, test it, and then update the lock files in the version-control system.
+
 ### diff
 
 The `helmfile diff` sub-command executes the [helm-diff](https://github.com/databus23/helm-diff) plugin across all of
@@ -249,7 +412,15 @@ The `helmfile apply` sub-command begins by executing `diff`. If `diff` finds tha
 
 An expected use-case of `apply` is to schedule it to run periodically, so that you can auto-fix skews between the desired and the current state of your apps running on Kubernetes clusters.
 
-### delete
+### destroy
+
+The `helmfile destroy` sub-command deletes and purges all the releases defined in the manifests.
+
+`helmfile --interactive destroy` instructs Helmfile to request your confirmation before actually deleting releases.
+
+`destroy` basically runs `helm delete --purge` on all the targeted releases. If you don't want purging, use `helmfile delete` instead.
+
+### delete (DEPRECATED)
 
 The `helmfile delete` sub-command deletes all the releases defined in the manifests.
 
@@ -257,6 +428,7 @@ The `helmfile delete` sub-command deletes all the releases defined in the manife
 
 Note that `delete` doesn't purge releases. So `helmfile delete && helmfile sync` results in sync failed due to that releases names are not deleted but preserved for future references. If you really want to remove releases for reuse, add `--purge` flag to run it like `helmfile delete --purge`.
 
+
 ### secrets
 
 The `secrets` parameter in a `helmfile.yaml` causes the [helm-secrets](https://github.com/futuresimple/helm-secrets) plugin to be executed to decrypt the file.
@@ -297,7 +469,7 @@ The `selector` parameter can be specified multiple times. Each parameter is reso
 
 `--selector tier=frontend --selector tier=backend` will select all the charts
 
-In addition to user supplied labels the name, namespace, and chart are available to be used as selectors.  The chart will just be the chart name excluding the repository (Example `stable/filebeat` would be selected using `--selector chart=filebeat`).
+In addition to user supplied labels, the name, the namespace, and the chart are available to be used as selectors.  The chart will just be the chart name excluding the repository (Example `stable/filebeat` would be selected using `--selector chart=filebeat`).
 
 ## Templates
 
@@ -528,6 +700,13 @@ Then the environment secret `foo.bar` can be referenced by the below template ex
 {{ .Environment.Values.foo.bar }}
 ```
 
+## Tillerless
+
+With the [helm-tiller](https://github.com/rimusz/helm-tiller) plugin installed, you can work without tiller installed.
+
+To enable this mode, you need to define `tillerless: true` and set the `tillerNamespace` in the `helmDefaults` section
+or in the `releases` entries.
+
 ## Separating helmfile.yaml into multiple independent files
 
 Once your `helmfile.yaml` got to contain too many releases,
@@ -598,6 +777,30 @@ Just run `helmfile sync` inside `myteam/`, and you are done.
 
 All the files are sorted alphabetically per group = array item inside `helmfiles:`, so that you have granular control over ordering, too.
 
+#### selectors
+
+When composing helmfiles you can use selectors from the command line as well as explicit selectors inside the parent helmfile to filter the releases to be used.
+
+```yaml
+helmfiles:
+- apps/*/helmfile.yaml
+- path: apps/a-helmfile.yaml
+  selectors:          # list of selectors
+  - name=prometheus
+  - tier=frontend
+- path: apps/b-helmfile.yaml # no selector, so all releases are used
+selectors: []
+- path: apps/c-helmfile.yaml # parent selector to be used or cli selector for the initial helmfile
+  selectorsInherited: true
+```
+
+* When a selector is specified, only this selector applies and the parents or CLI selectors are ignored.
+* When not selector is specified there are 2 modes for the selector inheritance because we would like to change the current inheritance behavior (see [issue #344](https://github.com/roboll/helmfile/issues/344)  ).
+  * Legacy mode, sub-helmfiles without selectors inherit selectors from their parent helmfile. The initial helmfiles inherit from the command line selectors.
+  * explicit mode, sub-helmfile without selectors do not inherit from their parent or the CLI selector. If you want them to inherit from their parent selector then use `selectorsInherited: true`. To enable this explicit mode you need to set the following environment variable `HELMFILE_EXPERIMENTAL=explicit-selector-inheritance` (see [experimental](#experimental-features)).
+* Using `selector: []` will select all releases regardless of the parent selector or cli for the initial helmfile
+* using `selectorsInherited: true` make the sub-helmfile selects releases with the parent selector or the cli for the initial helmfile. You cannot specify an explicit selector while using `selectorsInherited: true`
+
 ## Importing values from any source
 
 The `exec` template function that is available in `values.yaml.gotmpl` is useful for importing values from any source
@@ -626,19 +829,26 @@ A Helmfile hook is a per-release extension point that is composed of:
 - `events`
 - `command`
 - `args`
+- `showlogs`
 
 Helmfile triggers various `events` while it is running.
-Once `events` are triggered, associated `hooks` are executed, by running the `command` with `args`.
+Once `events` are triggered, associated `hooks` are executed, by running the `command` with `args`. The standard output of the `command` will be displayed if `showlogs` is set and it's value is `true`.
 
 Currently supported `events` are:
 
 - `prepare`
+- `presync`
+- `postsync`
 - `cleanup`
 
 Hooks associated to `prepare` events are triggered after each release in your helmfile is loaded from YAML, before execution.
 
 Hooks associated to `cleanup` events are triggered after each release is processed.
 
+Hooks associated to `presync` events are triggered before each release is applied to the remote cluster. This is the ideal event to execute any commands that may mutate the cluster state as it will not be run for read-only operations like `lint`, `diff` or `template`.
+
+Hooks associated to `postsync` events are triggered after each release is applied to the remote cluster. This is the ideal event to execute any commands that may mutate the cluster state as it will not be run for read-only operations like `lint`, `diff` or `template`.
+
 The following is an example hook that just prints the contextual information provided to hook:
 
 ```
@@ -648,6 +858,7 @@ releases:
   # *snip*
   hooks:
   - events: ["prepare", "cleanup"]
+    showlogs: true
     command: "echo"
     args: ["{{`{{.Environment.Name}}`}}", "{{`{{.Release.Name}}`}}", "{{`{{.HelmfileCommand}}`}}\
 "]
@@ -730,6 +941,12 @@ Use the [Helmfile Best Practices Guide](/docs/writing-helmfile.md) to write adva
 - Default values
 - Layering
 
+We also have dedicated documentation on the following topics which might interest you:
+
+- [Shared Configurations Across Teams](/docs/shared-configuration-across-teams.md)
+
+Or join our friendly slack community in the [`#helmfile`](https://slack.sweetops.com) channel to ask questions and get help. Check out our [slack archive](https://archive.sweetops.com/helmfile/) for good examples of how others are using it.
+
 ## Using env files
 
 Helmfile itself doesn't have an ability to load env files. But you can write some bash script to achieve the goal:
@@ -742,7 +959,7 @@ Please see #203 for more context.
 
 ## Running helmfile interactively
 
-`helmfile --interactive [apply|delete]` requests confirmation from you before actually modifying your cluster.
+`helmfile --interactive [apply|destroy]` requests confirmation from you before actually modifying your cluster.
 
 Use it when you're running `helmfile` manually on your local machine or a kind of secure administrative hosts.
 
@@ -754,6 +971,12 @@ Once you download all required charts into your machine, you can run `helmfile c
 It basically run only `helm upgrade --install` with your already-downloaded charts, hence no Internet connection is required.
 See #155 for more information on this topic.
 
+## Experimental features
+Some experimental features may be available for testing in perspective of being (or not) included in a future release.
+Those features are set using the environment variable `HELMFILE_EXPERIMENTAL`. Here is the current experimental feature :
+* `explicit-selector-inheritance` : remove today implicit cli selectors inheritance for composed helmfiles, see [composition selector](#selectors)
+
+If you want to enable all experimental features set the env var to `HELMFILE_EXPERIMENTAL=true`
 
 ## Examples
 

USERS.md

@@ -1,18 +1,19 @@
 # Helmfile Users
 
-The following table is compiled from public information or from survey responses. If you are using Helmfile in your
-company or organization, we would like to invite you to [participate in our user survey](https://docs.google.com/forms/d/e/1FAIpQLSfrF5kR9nXsr5yWqNZGgN-KquM1mBTuYNn5lRmEVXEvhq0VIQ/viewform)
-to help us extend this list.
+Who's actually using Helmfile? The following table is compiled from public information, survey response and PRs. It's
+likely this is only a small selection of actual users, but it's a start.
+
+If you are using Helmfile in your company or organization, we would like to invite you to create a PR to add your
+information to this file.
 
 <!-- TABLE_START -->
-| Organization | Workload | More Info | Location |
-|---|---|---|---|
-| [reddit.com](https://www.reddit.com/) | production | [GitHub issue](https://github.com/roboll/helmfile/issues/96#issue-312012249) | San Francisco, CA, US |
-| [ricardo.ch](https://www.ricardo.ch/) | proof-of-concept | | Zug, Switzerland |
+| Organization | Workload | More Info | Location | Added |
+|---|---|---|---|---|
+| [reddit.com](https://www.reddit.com/) | production | [GitHub issue](https://github.com/roboll/helmfile/issues/96#issue-312012249), [Talk](https://www.slideshare.net/GregoryTaylor11/helm-at-reddit-from-local-dev-staging-to-production) | San Francisco, CA | April 2018 |
+| [ricardo.ch](https://www.ricardo.ch/) | production | We're deploying our complete application platform using Helmfile. | Zug, Switzerland | April 2018 |
+| [Sight Machine](https://sightmachine.com/) | production | We don't have anything publicly posted about it, but have been using it for quite a while in production. | San Francisco, CA and Ann Arbor, MI | December 2018 |
+| [VSHN – The DevOps Company](https://vshn.ch) | production	| | Zurich, Switzerland | March 2019 |
+| [Vlocity](https://vlocity.com/) | proof-of-concept | | Melbourne, Australia | March 2019 |
+| [transit](https://transit.app/) | production | Repos are private, but [here's a blog post](https://medium.com/@naseem_60378/helmfile-its-like-a-helm-for-your-helm-74a908581599). We're using `helmfile.d` with 1 helmfile per namespace. Multiple environments, but not all charts on all environments. Using installed: `{{ eq .Environment.Name "env1" "env2" "env5" }}`. Loving it so far! Thanks! | Montreal, Canada | March 2019 |
+| [uniqkey](https://uniqkey.eu/) | production | [Wiki Page](https://ocd-scm.github.io/ocd-meta/) | Copenhagen, Denmark | April 2019 |
 <!-- TABLE_END -->
-
-## Contact
-
-Please fill out [the Google form](https://docs.google.com/forms/d/e/1FAIpQLSfrF5kR9nXsr5yWqNZGgN-KquM1mBTuYNn5lRmEVXEvhq0VIQ/viewform) to add your organization instead of opening a PR.
-
-You can also [reach the maintainer on Twitter](https://twitter.com/DerCed).

cmd/cmd.go

@@ -1,100 +0,0 @@
-package cmd
-
-import (
-	"fmt"
-	"github.com/roboll/helmfile/helmexec"
-	"github.com/roboll/helmfile/pkg/app"
-	"github.com/roboll/helmfile/state"
-	"github.com/urfave/cli"
-	"go.uber.org/zap"
-	"os/exec"
-	"strings"
-	"syscall"
-)
-
-func VisitAllDesiredStates(c *cli.Context, converge func(*state.HelmState, helmexec.Interface, app.Context) (bool, []error)) error {
-	a, fileOrDir, err := InitAppEntry(c, false)
-	if err != nil {
-		return err
-	}
-
-	ctx := app.NewContext()
-
-	convergeWithHelmBinary := func(st *state.HelmState, helm helmexec.Interface) (bool, []error) {
-		if c.GlobalString("helm-binary") != "" {
-			helm.SetHelmBinary(c.GlobalString("helm-binary"))
-		}
-		return converge(st, helm, ctx)
-	}
-
-	err = a.VisitDesiredStates(fileOrDir, convergeWithHelmBinary)
-
-	return toCliError(err)
-}
-
-func InitAppEntry(c *cli.Context, reverse bool) (*app.App, string, error) {
-	if c.NArg() > 0 {
-		cli.ShowAppHelp(c)
-		return nil, "", fmt.Errorf("err: extraneous arguments: %s", strings.Join(c.Args(), ", "))
-	}
-
-	fileOrDir := c.GlobalString("file")
-	kubeContext := c.GlobalString("kube-context")
-	namespace := c.GlobalString("namespace")
-	selectors := c.GlobalStringSlice("selector")
-	logger := c.App.Metadata["logger"].(*zap.SugaredLogger)
-
-	env := c.GlobalString("environment")
-	if env == "" {
-		env = state.DefaultEnv
-	}
-
-	app := app.Init(&app.App{
-		KubeContext: kubeContext,
-		Logger:      logger,
-		Reverse:     reverse,
-		Env:         env,
-		Namespace:   namespace,
-		Selectors:   selectors,
-	})
-
-	return app, fileOrDir, nil
-}
-
-func FindAndIterateOverDesiredStatesUsingFlagsWithReverse(c *cli.Context, reverse bool, converge func(*state.HelmState, helmexec.Interface, app.Context) []error) error {
-	a, fileOrDir, err := InitAppEntry(c, reverse)
-	if err != nil {
-		return err
-	}
-
-	ctx := app.NewContext()
-
-	convergeWithHelmBinary := func(st *state.HelmState, helm helmexec.Interface) []error {
-		if c.GlobalString("helm-binary") != "" {
-			helm.SetHelmBinary(c.GlobalString("helm-binary"))
-		}
-		return converge(st, helm, ctx)
-	}
-
-	err = a.VisitDesiredStatesWithReleasesFiltered(fileOrDir, convergeWithHelmBinary)
-
-	return toCliError(err)
-}
-
-func toCliError(err error) error {
-	if err != nil {
-		switch e := err.(type) {
-		case *app.NoMatchingHelmfileError:
-			return cli.NewExitError(e.Error(), 2)
-		case *exec.ExitError:
-			// Propagate any non-zero exit status from the external command like `helm` that is failed under the hood
-			status := e.Sys().(syscall.WaitStatus)
-			return cli.NewExitError(e.Error(), status.ExitStatus())
-		case *state.DiffError:
-			return cli.NewExitError(e.Error(), e.Code)
-		default:
-			return cli.NewExitError(e.Error(), 1)
-		}
-	}
-	return err
-}

cmd/deps.go

@@ -1,37 +0,0 @@
-package cmd
-
-import (
-	"github.com/roboll/helmfile/args"
-	"github.com/roboll/helmfile/helmexec"
-	"github.com/roboll/helmfile/pkg/app"
-	"github.com/roboll/helmfile/state"
-	"github.com/urfave/cli"
-)
-
-func Deps(a *app.App) cli.Command {
-	return cli.Command{
-		Name:  "deps",
-		Usage: "update charts based on the contents of requirements.yaml",
-		Flags: []cli.Flag{
-			cli.StringFlag{
-				Name:  "args",
-				Value: "",
-				Usage: "pass args to helm exec",
-			},
-		},
-		Action: func(c *cli.Context) error {
-			return VisitAllDesiredStates(c, func(state *state.HelmState, helm helmexec.Interface, ctx app.Context) (bool, []error) {
-				args := args.GetArgs(c.String("args"), state)
-				if len(args) > 0 {
-					helm.SetExtraArgs(args...)
-				}
-
-				errs := state.UpdateDeps(helm)
-
-				ok := len(errs) == 0
-
-				return ok, errs
-			})
-		},
-	}
-}

docs/shared-configuration-across-teams.md

@@ -0,0 +1,152 @@
+# Shared Configuration Across Teams
+
+Assume you have a two or more teams, each works for a different internal or external service, like:
+
+- Product 1
+- Product 2
+- Observability
+
+The simplest `helmfile.yaml` that declares the whole cluster that is composed of the three services would look like the below:
+
+```yaml
+releases:
+- name: product1-api
+  chart: product1-charts/api
+  # snip
+- name: product1-web
+  chart: product1-charts/web
+  # snip
+- name: product2-api
+  chart: saas-charts/api
+  # snip
+- name: product2-web
+  chart: product2-charts/web
+  # snip
+- name: observability-prometheus-operator
+  chart: stable/prometheus-operator
+  # snip
+- name: observability-process-exporter
+  chart: stable/prometheus-operator
+  # snip
+```
+
+This works, but what if you wanted to a separate cluster per service to achieve smaller blast radius?
+
+Let's start by creating a `helmfile.yaml` for each service.
+
+`product1/helmfile.yaml`:
+
+```yaml
+releases:
+- name: product1-api
+  chart: product1-charts/api
+  # snip
+- name: product1-web
+  chart: product1-charts/web
+  # snip
+- name: observability-prometheus-operator
+  chart: stable/prometheus-operator
+  # snip
+- name: observability-process-exporter
+  chart: stable/prometheus-operator
+  # snip
+```
+
+`product2/helmfile.yaml`:
+
+```yaml
+releases:
+- name: product2-api
+  chart: product2-charts/api
+  # snip
+- name: product2-web
+  chart: product2-charts/web
+  # snip
+- name: observability-prometheus-operator
+  chart: stable/prometheus-operator
+  # snip
+- name: observability-process-exporter
+  chart: stable/prometheus-operator
+  # snip
+```
+
+You will (of course!) notice this isn't DRY.
+
+To remove the duplication of observability stack between the two helmfiles, create a "sub-helmfile" for the observability stack.
+
+`observability/helmfile.yaml`:
+
+```yaml
+- name: observability-prometheus-operator
+  chart: stable/prometheus-operator
+  # snip
+- name: observability-process-exporter
+  chart: stable/prometheus-operator
+  # snip
+```
+
+As you might have imagined, the observability helmfile can be reused from the two product helmfiles by declaring `helmfiles`.
+
+`product1/helmfile.yaml`:
+
+```yaml
+helmfiles:
+- ../observability/helmfile.yaml
+
+releases:
+- name: product1-api
+  chart: product1-charts/api
+  # snip
+- name: product1-web
+  chart: product1-charts/web
+  # snip
+```
+
+`product2/helmfile.yaml`:
+
+```yaml
+helmfiles:
+- ../observability/helmfile.yaml
+
+releases:
+- name: product2-api
+  chart: product2-charts/api
+  # snip
+- name: product2-web
+  chart: product2-charts/web
+  # snip
+```
+
+## Using sub-helmfile as a template
+
+You can go even further by generalizing the product related releases as a pair of `api` and `web`:
+
+`shared/helmfile.yaml`:
+
+```yaml
+releases:
+- name: product{{ env "PRODUCT_ID" }}-api
+  chart: product{{ env "PRODUCT_ID" }}-charts/api
+  # snip
+- name: product{{ env "PRODUCT_ID" }}-web
+  chart: product{{ env "PRODUCT_ID" }}-charts/web
+  # snip
+```
+
+Then you only need one single product helmfile
+
+
+`product/helmfile.yaml`:
+
+```yaml
+helmfiles:
+- ../observability/helmfile.yaml
+- ../shared/helmfile.yaml
+```
+
+Now that we use the environment variable `PRODUCT_ID` to as the parameters of release names, you need to set it before running `helmfile`, so that it produces the differently named releases per product:
+
+```console
+$ PRODUCT_ID=1 helmfile -f product/helmfile.yaml apply
+$ PRODUCT_ID=2 helmfile -f product/helmfile.yaml apply
+```

docs/writing-helmfile.md

@@ -91,7 +91,9 @@ releases:
 
 See the [issue 428](https://github.com/roboll/helmfile/issues/428) for more context on how this is supposed to work.
 
-## Layering
+## Layering State Files
+
+> See **Layering State Template Files** if you're layering templates.
 
 You may occasionally end up with many helmfiles that shares common parts like which repositories to use, and whichi release to be bundled by default.
 
@@ -100,24 +102,17 @@ Use Layering to extract the common parts into a dedicated *library helmfile*s, s
 Let's assume that your `helmfile.yaml` looks like:
 
 ```
-{ readFile "commons.yaml" }}
----
-{{ readFile "environments.yaml" }}
----
+bases:
+- environments.yaml
+
 releases:
+- name: metricbaet
+  chart: stable/metricbeat
 - name: myapp
   chart: mychart
 ```
 
-Whereas `commons.yaml` contained a monitoring agent:
-
-```yaml
-releases:
-- name: metricbaet
-  chart: stable/metricbeat
-```
-
-And `environments.yaml` contained well-known environments:
+Whereas `environments.yaml` contained well-known environments:
 
 ```yaml
 environments:
@@ -125,23 +120,24 @@ environments:
   production:
 ```
 
-At run time, template expressions in your `helmfile.yaml` are executed:
+At run time, `bases` in your `helmfile.yaml` are evaluated to produce:
 
 ```yaml
-releases:
-- name: metricbaet
-  chart: stable/metricbeat
 ---
+# environments.yaml
 environments:
   development:
   production:
 ---
+# helmfile.yaml
 releases:
 - name: myapp
   chart: mychart
+- name: metricbaet
+  chart: stable/metricbeat
 ```
 
-Resulting YAML documents are merged in the order of occurrence,
+Finally the resulting YAML documents are merged in the order of occurrence,
 so that your `helmfile.yaml` becomes:
 
 ```yaml
@@ -159,3 +155,164 @@ releases:
 Great!
 
 Now, repeat the above steps for each your `helmfile.yaml`, so that all your helmfiles becomes DRY.
+
+Please also see [the discussion in the issue 388](https://github.com/roboll/helmfile/issues/388#issuecomment-491710348) for more advanced layering examples.
+
+## Merging Arrays in Layers
+
+Helmfile doesn't merge arrays across layers. That is, the below example doesn't work as you might have expected:
+
+```yaml
+releases:
+- name: metricbaet
+  chart: stable/metricbeat
+---
+releases:
+- name: myapp
+  chart: mychart
+```
+
+Helmfile overrides the `releases` array with the latest layer so the resulting state file will be:
+
+```yaml
+releases:
+# metricbeat release disappeared! but that's how helmfiel works
+- name: myapp
+  chart: mychart
+```
+
+A work-around is to treat the state file as a go template and use `readFile` template function to import the common part of your state file as a plain text:
+
+`common.yaml`:
+
+```yaml
+templates:
+  metricbeat: &metricbeat
+  - name: metricbeat
+    chart: stable/metricbeat
+```
+
+`helmfile.yaml`:
+
+```yaml
+{{ readFile "common.yaml" }}
+
+releases:
+- <<: *metricbeat
+- name: myapp
+  chart: mychart
+```
+
+## Layering State Template Files
+
+Do you need to make your state file even more DRY?
+
+Turned out layering state files wasn't enough for you?
+
+Helmfile supports an advanced feature that allows you to compose state "template" files to generate the final state to be processed.
+
+In the following example `helmfile.yaml.gotmpl`, each `---` separated part of the file is a go template.
+
+`helmfile.yaml.gotmpl`:
+
+```yaml
+# Part 1: Reused Enviroment Values
+bases:
+  - myenv.yaml
+---
+# Part 2: Reused Defaults
+bases:
+  - mydefaults.yaml
+---
+# Part 3: Dynamic Releases
+releases:
+  - name: test1
+    chart: mychart-{{ .Environment.Values.myname }}
+    values:
+      replicaCount: 1
+      image:
+        repository: "nginx"
+        tag: "latest"
+```
+
+Suppose the `myenv.yaml` and `test.env.yaml` loaded in the first part looks like:
+
+`myenv.yaml`:
+
+```yaml
+environments:
+  test:
+    values:
+      - test.env.yaml
+```
+
+`test.env.yaml`:
+
+```yaml
+kubeContext: test
+wait: false
+cvOnly: false
+myname: "dog"
+```
+
+Where the gotmpl file loaded in the second part looks like:
+
+`mydefaults.yaml.gotmpl`:
+
+```yaml
+helmDefaults:
+  tillerNamespace: kube-system
+  kubeContext: {{ .Environment.Values.kubeContext }}
+  verify: false
+  {{ if .Environment.Values.wait }}
+  wait: true
+  {{ else }}
+  wait: false
+  {{ end }}
+  timeout: 600
+  recreatePods: false
+  force: true
+```
+
+Each go template is rendered in the context where `.Environment.Values` is inherited from the previous part. 
+
+So in `mydefaults.yaml.gotmpl`, both `.Environment.Values.kubeContext` and `.Environment.Values.wait` are valid as they do exist in the environment values inherited from the previous part(=the first part) of your `helmfile.yaml.gotmpl`, and therefore the template is rendered to:
+
+```yaml
+helmDefaults:
+  tillerNamespace: kube-system
+  kubeContext: test
+  verify: false
+  wait: false
+  timeout: 600
+  recreatePods: false
+  force: true
+```
+
+Similarly, the third part of the top-level `helmfile.yaml.gotmpl`, `.Environment.Values.myname` is valid as it is included in the environment values inherited from the previous parts:
+
+```yaml
+# Part 3: Dynamic Releases
+releases:
+  - name: test1
+    chart: mychart-{{ .Environment.Values.myname }}
+    values:
+      replicaCount: 1
+      image:
+        repository: "nginx"
+        tag: "latest"
+````
+
+hence rendered to:
+
+```yaml
+# Part 3: Dynamic Releases
+releases:
+  - name: test1
+    chart: mychart-dog
+    values:
+      replicaCount: 1
+      image:
+        repository: "nginx"
+        tag: "latest"
+```

environment/environment.go

@@ -1,8 +0,0 @@
-package environment
-
-type Environment struct {
-	Name   string
-	Values map[string]interface{}
-}
-
-var EmptyEnvironment Environment

go.mod

@@ -0,0 +1,22 @@
+module github.com/roboll/helmfile
+
+go 1.12
+
+require (
+	github.com/Masterminds/semver v1.4.1
+	github.com/Masterminds/sprig v2.16.0+incompatible
+	github.com/aokoli/goutils v1.0.1 // indirect
+	github.com/google/go-cmp v0.3.0
+	github.com/google/uuid v0.0.0-20161128191214-064e2069ce9c // indirect
+	github.com/hashicorp/go-getter v1.3.0
+	github.com/huandu/xstrings v1.0.0 // indirect
+	github.com/imdario/mergo v0.3.6
+	github.com/pkg/errors v0.8.1 // indirect
+	github.com/tatsushid/go-prettytable v0.0.0-20141013043238-ed2d14c29939
+	github.com/urfave/cli v0.0.0-20160620154522-6011f165dc28
+	go.uber.org/atomic v1.3.2 // indirect
+	go.uber.org/multierr v1.1.0 // indirect
+	go.uber.org/zap v1.8.0
+	gopkg.in/yaml.v2 v2.2.1
+	gotest.tools v2.2.0+incompatible
+)

go.sum

@@ -0,0 +1,204 @@
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+dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0/go.mod h1:JLBrvjyP0v+ecvNYvCpyZgu5/xkfAUhi6wJj28eUfSU=
+dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412/go.mod h1:a1inKt/atXimZ4Mv927x+r7UpyzRUf4emIoiiSC2TN4=
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+git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
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helmexec/helmexec.go

@@ -1,22 +0,0 @@
-package helmexec
-
-// Interface for executing helm commands
-type Interface interface {
-	SetExtraArgs(args ...string)
-	SetHelmBinary(bin string)
-
-	AddRepo(name, repository, certfile, keyfile, username, password string) error
-	UpdateRepo() error
-	BuildDeps(chart string) error
-	UpdateDeps(chart string) error
-	SyncRelease(name, chart string, flags ...string) error
-	DiffRelease(name, chart string, flags ...string) error
-	TemplateRelease(chart string, flags ...string) error
-	Fetch(chart string, flags ...string) error
-	Lint(chart string, flags ...string) error
-	ReleaseStatus(name string) error
-	DeleteRelease(name string, flags ...string) error
-	TestRelease(name string, flags ...string) error
-
-	DecryptSecret(name string) (string, error)
-}

helmexec/runner.go

@@ -1,27 +0,0 @@
-package helmexec
-
-import (
-	"os/exec"
-)
-
-const (
-	tmpPrefix = "helmfile-"
-	tmpSuffix = "-exec"
-)
-
-// Runner interface for shell commands
-type Runner interface {
-	Execute(cmd string, args []string) ([]byte, error)
-}
-
-// ShellRunner implemention for shell commands
-type ShellRunner struct {
-	Dir string
-}
-
-// Execute a shell command
-func (shell ShellRunner) Execute(cmd string, args []string) ([]byte, error) {
-	preparedCmd := exec.Command(cmd, args...)
-	preparedCmd.Dir = shell.Dir
-	return preparedCmd.CombinedOutput()
-}

main.go

@@ -2,11 +2,10 @@ package main
 
 import (
 	"fmt"
-	"github.com/roboll/helmfile/args"
-	"github.com/roboll/helmfile/cmd"
-	"github.com/roboll/helmfile/helmexec"
 	"github.com/roboll/helmfile/pkg/app"
-	"github.com/roboll/helmfile/state"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"github.com/roboll/helmfile/pkg/maputil"
+	"github.com/roboll/helmfile/pkg/state"
 	"github.com/urfave/cli"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
@@ -30,7 +29,7 @@ func configureLogging(c *cli.Context) error {
 	if err != nil {
 		return err
 	}
-	logger = helmexec.NewLogger(os.Stdout, logLevel)
+	logger = helmexec.NewLogger(os.Stderr, logLevel)
 	if c.App.Metadata == nil {
 		// Auto-initialised in 1.19.0
 		// https://github.com/urfave/cli/blob/master/CHANGELOG.md#1190---2016-11-19
@@ -59,6 +58,14 @@ func main() {
 			Name:  "environment, e",
 			Usage: "specify the environment name. defaults to `default`",
 		},
+		cli.StringSliceFlag{
+			Name:  "state-values-set",
+			Usage: "set state values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)",
+		},
+		cli.StringSliceFlag{
+			Name:  "state-values-file",
+			Usage: "specify state values in a YAML file",
+		},
 		cli.BoolFlag{
 			Name:  "quiet, q",
 			Usage: "Silence output. Equivalent to log-level warn",
@@ -82,6 +89,10 @@ func main() {
 	--selector tier=frontend,tier!=proxy --selector tier=backend. Will match all frontend, non-proxy releases AND all backend releases.
 	The name of a release can be used as a label. --selector name=myrelease`,
 		},
+		cli.BoolFlag{
+			Name:  "allow-no-matching-release",
+			Usage: `Do not exit with an error code if the provided selector has no matching releases.`,
+		},
 		cli.BoolFlag{
 			Name:  "interactive, i",
 			Usage: "Request confirmation before attempting to modify clusters",
@@ -90,6 +101,20 @@ func main() {
 
 	cliApp.Before = configureLogging
 	cliApp.Commands = []cli.Command{
+		{
+			Name:  "deps",
+			Usage: "update charts based on the contents of requirements.yaml",
+			Flags: []cli.Flag{
+				cli.StringFlag{
+					Name:  "args",
+					Value: "",
+					Usage: "pass args to helm exec",
+				},
+			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Deps(c)
+			}),
+		},
 		{
 			Name:  "repos",
 			Usage: "sync repositories from state file (helm repo add && helm repo update)",
@@ -100,24 +125,13 @@ func main() {
 					Usage: "pass args to helm exec",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return cmd.VisitAllDesiredStates(c, func(state *state.HelmState, helm helmexec.Interface, ctx app.Context) (bool, []error) {
-					args := args.GetArgs(c.String("args"), state)
-					if len(args) > 0 {
-						helm.SetExtraArgs(args...)
-					}
-
-					errs := ctx.SyncReposOnce(state, helm)
-
-					ok := len(state.Repositories) > 0 && len(errs) == 0
-
-					return ok, errs
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Repos(c)
+			}),
 		},
 		{
 			Name:  "charts",
-			Usage: "sync releases from state file (helm upgrade --install)",
+			Usage: "DEPRECATED: sync releases from state file (helm upgrade --install)",
 			Flags: []cli.Flag{
 				cli.StringFlag{
 					Name:  "args",
@@ -134,11 +148,9 @@ func main() {
 					Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return findAndIterateOverDesiredStatesUsingFlags(c, func(state *state.HelmState, helm helmexec.Interface, _ app.Context) []error {
-					return executeSyncCommand(c, state, helm)
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.DeprecatedSyncCharts(c)
+			}),
 		},
 		{
 			Name:  "diff",
@@ -171,24 +183,9 @@ func main() {
 					Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return findAndIterateOverDesiredStatesUsingFlags(c, func(state *state.HelmState, helm helmexec.Interface, ctx app.Context) []error {
-					if !c.Bool("skip-deps") {
-						if errs := ctx.SyncReposOnce(state, helm); errs != nil && len(errs) > 0 {
-							return errs
-						}
-						if errs := state.BuildDeps(helm); errs != nil && len(errs) > 0 {
-							return errs
-						}
-					}
-					if errs := state.PrepareRelease(helm, "diff"); errs != nil && len(errs) > 0 {
-						return errs
-					}
-
-					_, errs := executeDiffCommand(c, state, helm, c.Bool("detailed-exitcode"), c.Bool("suppress-secrets"))
-					return errs
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Diff(c)
+			}),
 		},
 		{
 			Name:  "template",
@@ -213,22 +210,9 @@ func main() {
 					Usage: "skip running `helm repo update` and `helm dependency build`",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return findAndIterateOverDesiredStatesUsingFlags(c, func(state *state.HelmState, helm helmexec.Interface, ctx app.Context) []error {
-					if !c.Bool("skip-deps") {
-						if errs := ctx.SyncReposOnce(state, helm); errs != nil && len(errs) > 0 {
-							return errs
-						}
-						if errs := state.BuildDeps(helm); errs != nil && len(errs) > 0 {
-							return errs
-						}
-					}
-					if errs := state.PrepareRelease(helm, "template"); errs != nil && len(errs) > 0 {
-						return errs
-					}
-					return executeTemplateCommand(c, state, helm)
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Template(c)
+			}),
 		},
 		{
 			Name:  "lint",
@@ -248,21 +232,14 @@ func main() {
 					Value: 0,
 					Usage: "maximum number of concurrent downloads of release charts",
 				},
+				cli.BoolFlag{
+					Name:  "skip-deps",
+					Usage: "skip running `helm repo update` and `helm dependency build`",
+				},
 			},
-			Action: func(c *cli.Context) error {
-				return findAndIterateOverDesiredStatesUsingFlags(c, func(state *state.HelmState, helm helmexec.Interface, ctx app.Context) []error {
-					values := c.StringSlice("values")
-					args := args.GetArgs(c.String("args"), state)
-					workers := c.Int("concurrency")
-					if errs := ctx.SyncReposOnce(state, helm); errs != nil && len(errs) > 0 {
-						return errs
-					}
-					if errs := state.PrepareRelease(helm, "lint"); errs != nil && len(errs) > 0 {
-						return errs
-					}
-					return state.LintReleases(helm, values, args, workers)
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Lint(c)
+			}),
 		},
 		{
 			Name:  "sync",
@@ -287,22 +264,9 @@ func main() {
 					Usage: "skip running `helm repo update` and `helm dependency build`",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return findAndIterateOverDesiredStatesUsingFlags(c, func(state *state.HelmState, helm helmexec.Interface, ctx app.Context) []error {
-					if !c.Bool("skip-deps") {
-						if errs := ctx.SyncReposOnce(state, helm); errs != nil && len(errs) > 0 {
-							return errs
-						}
-						if errs := state.BuildDeps(helm); errs != nil && len(errs) > 0 {
-							return errs
-						}
-					}
-					if errs := state.PrepareRelease(helm, "sync"); errs != nil && len(errs) > 0 {
-						return errs
-					}
-					return executeSyncCommand(c, state, helm)
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Sync(c)
+			}),
 		},
 		{
 			Name:  "apply",
@@ -331,79 +295,9 @@ func main() {
 					Usage: "skip running `helm repo update` and `helm dependency build`",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return findAndIterateOverDesiredStatesUsingFlags(c, func(st *state.HelmState, helm helmexec.Interface, ctx app.Context) []error {
-					if !c.Bool("skip-deps") {
-						if errs := ctx.SyncReposOnce(st, helm); errs != nil && len(errs) > 0 {
-							return errs
-						}
-						if errs := st.BuildDeps(helm); errs != nil && len(errs) > 0 {
-							return errs
-						}
-					}
-					if errs := st.PrepareRelease(helm, "apply"); errs != nil && len(errs) > 0 {
-						return errs
-					}
-
-					releases, errs := executeDiffCommand(c, st, helm, true, c.Bool("suppress-secrets"))
-
-					releasesToBeDeleted, err := st.DetectReleasesToBeDeleted(helm)
-					if err != nil {
-						errs = append(errs, err)
-					}
-
-					noError := true
-					for _, e := range errs {
-						switch err := e.(type) {
-						case *state.DiffError:
-							noError = noError && err.Code == 2
-						default:
-							noError = false
-						}
-					}
-
-					// sync only when there are changes
-					if noError {
-						if len(releases) == 0 && len(releasesToBeDeleted) == 0 {
-							// TODO better way to get the logger
-							logger := c.App.Metadata["logger"].(*zap.SugaredLogger)
-							logger.Infof("")
-							logger.Infof("No affected releases")
-						} else {
-							names := []string{}
-							for _, r := range releases {
-								names = append(names, fmt.Sprintf("  %s (%s) UPDATED", r.Name, r.Chart))
-							}
-							for _, r := range releasesToBeDeleted {
-								names = append(names, fmt.Sprintf("  %s (%s) DELETED", r.Name, r.Chart))
-							}
-
-							msg := fmt.Sprintf(`Affected releases are:
-%s
-
-Do you really want to apply?
-  Helmfile will apply all your changes, as shown above.
-
-`, strings.Join(names, "\n"))
-							interactive := c.GlobalBool("interactive")
-							if !interactive || interactive && askForConfirmation(msg) {
-								rs := []state.ReleaseSpec{}
-								for _, r := range releases {
-									rs = append(rs, *r)
-								}
-								for _, r := range releasesToBeDeleted {
-									rs = append(rs, *r)
-								}
-
-								st.Releases = rs
-								return executeSyncCommand(c, st, helm)
-							}
-						}
-					}
-
-					return errs
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Apply(c)
+			}),
 		},
 		{
 			Name:  "status",
@@ -420,23 +314,19 @@ Do you really want to apply?
 					Usage: "pass args to helm exec",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return findAndIterateOverDesiredStatesUsingFlags(c, func(state *state.HelmState, helm helmexec.Interface, _ app.Context) []error {
-					workers := c.Int("concurrency")
-
-					args := args.GetArgs(c.String("args"), state)
-					if len(args) > 0 {
-						helm.SetExtraArgs(args...)
-					}
-
-					return state.ReleaseStatuses(helm, workers)
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Status(c)
+			}),
 		},
 		{
 			Name:  "delete",
-			Usage: "delete releases from state file (helm delete)",
+			Usage: "DEPRECATED: delete releases from state file (helm delete)",
 			Flags: []cli.Flag{
+				cli.IntFlag{
+					Name:  "concurrency",
+					Value: 0,
+					Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
+				},
 				cli.StringFlag{
 					Name:  "args",
 					Value: "",
@@ -447,34 +337,28 @@ Do you really want to apply?
 					Usage: "purge releases i.e. free release names and histories",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return cmd.FindAndIterateOverDesiredStatesUsingFlagsWithReverse(c, true, func(state *state.HelmState, helm helmexec.Interface, _ app.Context) []error {
-					purge := c.Bool("purge")
-
-					args := args.GetArgs(c.String("args"), state)
-					if len(args) > 0 {
-						helm.SetExtraArgs(args...)
-					}
-
-					names := make([]string, len(state.Releases))
-					for i, r := range state.Releases {
-						names[i] = fmt.Sprintf("  %s (%s)", r.Name, r.Chart)
-					}
-
-					msg := fmt.Sprintf(`Affected releases are:
-%s
-
-Do you really want to delete?
-  Helmfile will delete all your releases, as shown above.
-
-`, strings.Join(names, "\n"))
-					interactive := c.GlobalBool("interactive")
-					if !interactive || interactive && askForConfirmation(msg) {
-						return state.DeleteReleases(helm, purge)
-					}
-					return nil
-				})
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Delete(c)
+			}),
+		},
+		{
+			Name:  "destroy",
+			Usage: "deletes and then purges releases",
+			Flags: []cli.Flag{
+				cli.IntFlag{
+					Name:  "concurrency",
+					Value: 0,
+					Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
+				},
+				cli.StringFlag{
+					Name:  "args",
+					Value: "",
+					Usage: "pass args to helm exec",
+				},
 			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Destroy(c)
+			}),
 		},
 		{
 			Name:  "test",
@@ -500,20 +384,9 @@ Do you really want to delete?
 					Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
 				},
 			},
-			Action: func(c *cli.Context) error {
-				return findAndIterateOverDesiredStatesUsingFlags(c, func(state *state.HelmState, helm helmexec.Interface, _ app.Context) []error {
-					cleanup := c.Bool("cleanup")
-					timeout := c.Int("timeout")
-					concurrency := c.Int("concurrency")
-
-					args := args.GetArgs(c.String("args"), state)
-					if len(args) > 0 {
-						helm.SetExtraArgs(args...)
-					}
-
-					return state.TestReleases(helm, cleanup, timeout, concurrency)
-				})
-			},
+			Action: action(func(run *app.App, c configImpl) error {
+				return run.Test(c)
+			}),
 		},
 	}
 
@@ -524,39 +397,164 @@ Do you really want to delete?
 	}
 }
 
-func executeSyncCommand(c *cli.Context, state *state.HelmState, helm helmexec.Interface) []error {
-	args := args.GetArgs(c.String("args"), state)
-	if len(args) > 0 {
-		helm.SetExtraArgs(args...)
+type configImpl struct {
+	c *cli.Context
+
+	set map[string]interface{}
+}
+
+func NewUrfaveCliConfigImpl(c *cli.Context) (configImpl, error) {
+	if c.NArg() > 0 {
+		cli.ShowAppHelp(c)
+		return configImpl{}, fmt.Errorf("err: extraneous arguments: %s", strings.Join(c.Args(), ", "))
 	}
 
-	values := c.StringSlice("values")
-	workers := c.Int("concurrency")
-
-	return state.SyncReleases(helm, values, workers)
-}
-
-func executeTemplateCommand(c *cli.Context, state *state.HelmState, helm helmexec.Interface) []error {
-	args := args.GetArgs(c.String("args"), state)
-	values := c.StringSlice("values")
-	workers := c.Int("concurrency")
-
-	return state.TemplateReleases(helm, values, args, workers)
-}
-
-func executeDiffCommand(c *cli.Context, st *state.HelmState, helm helmexec.Interface, detailedExitCode, suppressSecrets bool) ([]*state.ReleaseSpec, []error) {
-	args := args.GetArgs(c.String("args"), st)
-	if len(args) > 0 {
-		helm.SetExtraArgs(args...)
+	conf := configImpl{
+		c: c,
 	}
 
-	values := c.StringSlice("values")
-	workers := c.Int("concurrency")
-	triggerCleanupEvents := c.Command.HasName("diff")
+	optsSet := c.GlobalStringSlice("state-values-set")
+	if len(optsSet) > 0 {
+		set := map[string]interface{}{}
+		for i := range optsSet {
+			ops := strings.Split(optsSet[i], ",")
+			for j := range ops {
+				op := strings.Split(ops[j], "=")
+				k := strings.Split(op[0], ".")
+				v := op[1]
 
-	return st.DiffReleases(helm, values, workers, detailedExitCode, suppressSecrets, triggerCleanupEvents)
+				set = maputil.Set(set, k, v)
+			}
+		}
+		conf.set = set
+	}
+
+	return conf, nil
 }
 
-func findAndIterateOverDesiredStatesUsingFlags(c *cli.Context, converge func(*state.HelmState, helmexec.Interface, app.Context) []error) error {
-	return cmd.FindAndIterateOverDesiredStatesUsingFlagsWithReverse(c, false, converge)
+func (c configImpl) Values() []string {
+	return c.c.StringSlice("values")
+}
+
+func (c configImpl) Args() string {
+	return c.c.String("args")
+}
+
+func (c configImpl) Concurrency() int {
+	return c.c.Int("concurrency")
+}
+
+func (c configImpl) HasCommandName(name string) bool {
+	return c.c.Command.HasName(name)
+}
+
+// DiffConfig
+
+func (c configImpl) SkipDeps() bool {
+	return c.c.Bool("skip-deps")
+}
+
+func (c configImpl) DetailedExitcode() bool {
+	return c.c.Bool("detailed-exitcode")
+}
+
+func (c configImpl) SuppressSecrets() bool {
+	return c.c.Bool("suppress-secrets")
+}
+
+// DeleteConfig
+
+func (c configImpl) Purge() bool {
+	return c.c.Bool("purge")
+}
+
+// TestConfig
+
+func (c configImpl) Cleanup() bool {
+	return c.c.Bool("cleanup")
+}
+
+func (c configImpl) Timeout() int {
+	return c.c.Int("timeout")
+}
+
+// GlobalConfig
+
+func (c configImpl) HelmBinary() string {
+	return c.c.GlobalString("helm-binary")
+}
+
+func (c configImpl) KubeContext() string {
+	return c.c.GlobalString("kube-context")
+}
+
+func (c configImpl) Namespace() string {
+	return c.c.GlobalString("namespace")
+}
+
+func (c configImpl) FileOrDir() string {
+	return c.c.GlobalString("file")
+}
+
+func (c configImpl) Selectors() []string {
+	return c.c.GlobalStringSlice("selector")
+}
+
+func (c configImpl) Set() map[string]interface{} {
+	return c.set
+}
+
+func (c configImpl) ValuesFiles() []string {
+	return c.c.GlobalStringSlice("state-values-file")
+}
+
+func (c configImpl) Interactive() bool {
+	return c.c.GlobalBool("interactive")
+}
+
+func (c configImpl) Logger() *zap.SugaredLogger {
+	return c.c.App.Metadata["logger"].(*zap.SugaredLogger)
+}
+
+func (c configImpl) Env() string {
+	env := c.c.GlobalString("environment")
+	if env == "" {
+		env = state.DefaultEnv
+	}
+	return env
+}
+
+func action(do func(*app.App, configImpl) error) func(*cli.Context) error {
+	return func(implCtx *cli.Context) error {
+		conf, err := NewUrfaveCliConfigImpl(implCtx)
+		if err != nil {
+			return err
+		}
+
+		a := app.New(conf)
+
+		a.ErrorHandler = func(err error) error {
+			return toCliError(implCtx, err)
+		}
+
+		return do(a, conf)
+	}
+}
+
+func toCliError(c *cli.Context, err error) error {
+	if err != nil {
+		switch e := err.(type) {
+		case *app.NoMatchingHelmfileError:
+			noMatchingExitCode := 3
+			if c.GlobalBool("allow-no-matching-release") {
+				noMatchingExitCode = 0
+			}
+			return cli.NewExitError(e.Error(), noMatchingExitCode)
+		case *app.Error:
+			return cli.NewExitError(e.Error(), e.Code())
+		default:
+			panic(fmt.Errorf("BUG: please file an github issue for this unhandled error: %T: %v", e, e))
+		}
+	}
+	return err
 }

pkg/app/app.go

@@ -2,16 +2,20 @@ package app
 
 import (
 	"fmt"
-	"github.com/roboll/helmfile/helmexec"
-	"github.com/roboll/helmfile/state"
-	"go.uber.org/zap"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"github.com/roboll/helmfile/pkg/remote"
+	"github.com/roboll/helmfile/pkg/state"
 	"io/ioutil"
 	"log"
 	"os"
 	"os/signal"
+	"strings"
+	"syscall"
+
+	"go.uber.org/zap"
+
 	"path/filepath"
 	"sort"
-	"syscall"
 )
 
 type App struct {
@@ -21,8 +25,17 @@ type App struct {
 	Env         string
 	Namespace   string
 	Selectors   []string
+	HelmBinary  string
+	Args        string
+	ValuesFiles []string
+	Set         map[string]interface{}
+
+	FileOrDir string
+
+	ErrorHandler func(error) error
 
 	readFile          func(string) ([]byte, error)
+	fileExists        func(string) (bool, error)
 	glob              func(string) ([]string, error)
 	abs               func(string) (string, error)
 	fileExistsAt      func(string) bool
@@ -30,6 +43,23 @@ type App struct {
 
 	getwd func() (string, error)
 	chdir func(string) error
+
+	remote *remote.Remote
+}
+
+func New(conf ConfigProvider) *App {
+	return Init(&App{
+		KubeContext: conf.KubeContext(),
+		Logger:      conf.Logger(),
+		Env:         conf.Env(),
+		Namespace:   conf.Namespace(),
+		Selectors:   conf.Selectors(),
+		HelmBinary:  conf.HelmBinary(),
+		Args:        conf.Args(),
+		FileOrDir:   conf.FileOrDir(),
+		ValuesFiles: conf.ValuesFiles(),
+		Set:         conf.Set(),
+	})
 }
 
 func Init(app *App) *App {
@@ -39,10 +69,89 @@ func Init(app *App) *App {
 	app.getwd = os.Getwd
 	app.chdir = os.Chdir
 	app.fileExistsAt = fileExistsAt
+	app.fileExists = fileExists
 	app.directoryExistsAt = directoryExistsAt
 	return app
 }
 
+func (a *App) Deps(c DepsConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Deps(c)
+	})
+}
+
+func (a *App) Repos(c ReposConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Repos(c)
+	})
+}
+
+func (a *App) reverse() *App {
+	new := *a
+	new.Reverse = true
+	return &new
+}
+
+func (a *App) DeprecatedSyncCharts(c DeprecatedChartsConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.DeprecatedSyncCharts(c)
+	})
+}
+
+func (a *App) Diff(c DiffConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Diff(c)
+	})
+}
+
+func (a *App) Template(c TemplateConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Template(c)
+	})
+}
+
+func (a *App) Lint(c LintConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Lint(c)
+	})
+}
+
+func (a *App) Sync(c SyncConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Sync(c)
+	})
+}
+
+func (a *App) Apply(c ApplyConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Apply(c)
+	})
+}
+
+func (a *App) Status(c StatusesConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Status(c)
+	})
+}
+
+func (a *App) Delete(c DeleteConfigProvider) error {
+	return a.reverse().ForEachState(func(run *Run) []error {
+		return run.Delete(c)
+	})
+}
+
+func (a *App) Destroy(c DestroyConfigProvider) error {
+	return a.reverse().ForEachState(func(run *Run) []error {
+		return run.Destroy(c)
+	})
+}
+
+func (a *App) Test(c TestConfigProvider) error {
+	return a.ForEachState(func(run *Run) []error {
+		return run.Test(c)
+	})
+}
+
 func (a *App) within(dir string, do func() error) error {
 	if dir == "." {
 		return do()
@@ -78,10 +187,10 @@ func (a *App) within(dir string, do func() error) error {
 	return appErr
 }
 
-func (a *App) visitStateFiles(fileOrDir string, do func(string) error) error {
+func (a *App) visitStateFiles(fileOrDir string, do func(string, string) error) error {
 	desiredStateFiles, err := a.findDesiredStateFiles(fileOrDir)
 	if err != nil {
-		return err
+		return appError("", err)
 	}
 
 	for _, relPath := range desiredStateFiles {
@@ -98,43 +207,72 @@ func (a *App) visitStateFiles(fileOrDir string, do func(string) error) error {
 		a.Logger.Debugf("processing file \"%s\" in directory \"%s\"", file, dir)
 
 		err := a.within(dir, func() error {
-			return do(file)
+			absd, err := a.abs(dir)
+			if err != nil {
+				return err
+			}
+
+			return do(file, absd)
 		})
 		if err != nil {
-			return err
+			return appError(fmt.Sprintf("in %s/%s", dir, file), err)
 		}
 	}
 
 	return nil
 }
 
-func (a *App) VisitDesiredStates(fileOrDir string, converge func(*state.HelmState, helmexec.Interface) (bool, []error)) error {
+func (a *App) loadDesiredStateFromYaml(file string, opts ...LoadOpts) (*state.HelmState, error) {
+	ld := &desiredStateLoader{
+		readFile:   a.readFile,
+		fileExists: a.fileExists,
+		env:        a.Env,
+		namespace:  a.Namespace,
+		logger:     a.Logger,
+		abs:        a.abs,
+
+		Reverse:     a.Reverse,
+		KubeContext: a.KubeContext,
+		glob:        a.glob,
+	}
+
+	var op LoadOpts
+	if len(opts) > 0 {
+		op = opts[0]
+	}
+
+	return ld.Load(file, op)
+}
+
+func (a *App) visitStates(fileOrDir string, defOpts LoadOpts, converge func(*state.HelmState, helmexec.Interface) (bool, []error)) error {
 	noMatchInHelmfiles := true
-	err := a.visitStateFiles(fileOrDir, func(f string) error {
-		content, err := a.readFile(f)
-		if err != nil {
-			return err
-		}
-		// render template, in two runs
-		r := &twoPassRenderer{
-			reader:    a.readFile,
-			env:       a.Env,
-			namespace: a.Namespace,
-			filename:  f,
-			logger:    a.Logger,
-			abs:       a.abs,
-		}
-		yamlBuf, err := r.renderTemplate(content)
-		if err != nil {
-			return fmt.Errorf("error during %s parsing: %v", f, err)
+
+	err := a.visitStateFiles(fileOrDir, func(f, d string) error {
+		opts := defOpts.DeepCopy()
+
+		if opts.CalleePath == "" {
+			opts.CalleePath = f
 		}
 
-		st, err := a.loadDesiredStateFromYaml(
-			yamlBuf.Bytes(),
-			f,
-			a.Namespace,
-			a.Env,
-		)
+		st, err := a.loadDesiredStateFromYaml(f, opts)
+
+		sigs := make(chan os.Signal, 1)
+		signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
+		go func() {
+			sig := <-sigs
+
+			errs := []error{fmt.Errorf("Received [%s] to shutdown ", sig)}
+			_ = context{a, st}.clean(errs)
+			// See http://tldp.org/LDP/abs/html/exitcodes.html
+			switch sig {
+			case syscall.SIGINT:
+				os.Exit(130)
+			case syscall.SIGTERM:
+				os.Exit(143)
+			}
+		}()
+
+		ctx := context{a, st}
 
 		helm := helmexec.New(a.Logger, a.KubeContext)
 
@@ -146,71 +284,144 @@ func (a *App) VisitDesiredStates(fileOrDir string, converge func(*state.HelmStat
 				case *state.UndefinedEnvError:
 					return nil
 				default:
-					return err
+					return ctx.wrapErrs(err)
 				}
 			default:
-				return err
+				return ctx.wrapErrs(err)
 			}
 		}
-
-		errs := []error{}
+		st.Selectors = opts.Selectors
 
 		if len(st.Helmfiles) > 0 {
 			noMatchInSubHelmfiles := true
-			for _, m := range st.Helmfiles {
-				if err := a.VisitDesiredStates(m, converge); err != nil {
+			for i, m := range st.Helmfiles {
+				optsForNestedState := LoadOpts{
+					CalleePath:  filepath.Join(d, f),
+					Environment: m.Environment,
+				}
+				//assign parent selector to sub helm selector in legacy mode or do not inherit in experimental mode
+				if (m.Selectors == nil && !isExplicitSelectorInheritanceEnabled()) || m.SelectorsInherited {
+					optsForNestedState.Selectors = opts.Selectors
+				} else {
+					optsForNestedState.Selectors = m.Selectors
+				}
+
+				if err := a.visitStates(m.Path, optsForNestedState, converge); err != nil {
 					switch err.(type) {
 					case *NoMatchingHelmfileError:
 
 					default:
-						return fmt.Errorf("failed processing %s: %v", m, err)
+						return appError(fmt.Sprintf("in .helmfiles[%d]", i), err)
 					}
 				} else {
 					noMatchInSubHelmfiles = false
 				}
 			}
 			noMatchInHelmfiles = noMatchInHelmfiles && noMatchInSubHelmfiles
-		} else {
-			var err error
-			st, err = st.ExecuteTemplates()
-			if err != nil {
-				return fmt.Errorf("failed executing release templates in \"%s\": %v", f, err)
-			}
-
-			var processed bool
-			processed, errs = converge(st, helm)
-			noMatchInHelmfiles = noMatchInHelmfiles && !processed
 		}
 
-		return clean(st, errs)
+		templated, tmplErr := st.ExecuteTemplates()
+		if tmplErr != nil {
+			return appError(fmt.Sprintf("failed executing release templates in \"%s\"", f), tmplErr)
+		}
+		processed, errs := converge(templated, helm)
+		noMatchInHelmfiles = noMatchInHelmfiles && !processed
+		return context{a, templated}.clean(errs)
 	})
+
 	if err != nil {
 		return err
 	}
+
 	if noMatchInHelmfiles {
 		return &NoMatchingHelmfileError{selectors: a.Selectors, env: a.Env}
 	}
+
 	return nil
 }
 
-func (a *App) VisitDesiredStatesWithReleasesFiltered(fileOrDir string, converge func(*state.HelmState, helmexec.Interface) []error) error {
-	selectors := a.Selectors
+func (a *App) ForEachState(do func(*Run) []error) error {
+	err := a.VisitDesiredStatesWithReleasesFiltered(a.FileOrDir, func(st *state.HelmState, helm helmexec.Interface) []error {
+		ctx := NewContext()
 
-	err := a.VisitDesiredStates(fileOrDir, func(st *state.HelmState, helm helmexec.Interface) (bool, []error) {
-		if len(selectors) > 0 {
-			err := st.FilterReleases(selectors)
+		run := NewRun(st, helm, ctx)
+
+		return do(run)
+	})
+
+	if err != nil && a.ErrorHandler != nil {
+		return a.ErrorHandler(err)
+	}
+
+	return err
+}
+
+func (a *App) VisitDesiredStatesWithReleasesFiltered(fileOrDir string, converge func(*state.HelmState, helmexec.Interface) []error) error {
+	opts := LoadOpts{
+		Selectors: a.Selectors,
+	}
+
+	envvals := []interface{}{}
+
+	if a.ValuesFiles != nil {
+		for i := range a.ValuesFiles {
+			envvals = append(envvals, a.ValuesFiles[i])
+		}
+	}
+
+	if a.Set != nil {
+		envvals = append(envvals, a.Set)
+	}
+
+	if len(envvals) > 0 {
+		opts.Environment.OverrideValues = envvals
+	}
+
+	dir, err := a.getwd()
+	if err != nil {
+		return err
+	}
+
+	getter := &remote.GoGetter{Logger: a.Logger}
+
+	remote := &remote.Remote{
+		Logger:     a.Logger,
+		Home:       dir,
+		Getter:     getter,
+		ReadFile:   a.readFile,
+		DirExists:  a.directoryExistsAt,
+		FileExists: a.fileExistsAt,
+	}
+
+	a.remote = remote
+
+	return a.visitStates(fileOrDir, opts, func(st *state.HelmState, helm helmexec.Interface) (bool, []error) {
+		if len(st.Selectors) > 0 {
+			err := st.FilterReleases()
 			if err != nil {
 				return false, []error{err}
 			}
 		}
 
-		releaseNameCounts := map[string]int{}
+		if a.HelmBinary != "" {
+			helm.SetHelmBinary(a.HelmBinary)
+		}
+
+		type Key struct {
+			TillerNamespace, Name string
+		}
+
+		releaseNameCounts := map[Key]int{}
 		for _, r := range st.Releases {
-			releaseNameCounts[r.Name]++
+			tillerNamespace := st.HelmDefaults.TillerNamespace
+			if r.TillerNamespace != "" {
+				tillerNamespace = r.TillerNamespace
+			}
+			releaseNameCounts[Key{tillerNamespace, r.Name}]++
 		}
 		for name, c := range releaseNameCounts {
 			if c > 1 {
-				return false, []error{fmt.Errorf("duplicate release \"%s\" found: there were %d releases named \"%s\" matching specified selector", name, c, name)}
+				return false, []error{fmt.Errorf("duplicate release \"%s\" found in \"%s\": there were %d releases named \"%s\" matching specified selector", name.Name, name.TillerNamespace, c, name.Name)}
 			}
 		}
 
@@ -220,10 +431,6 @@ func (a *App) VisitDesiredStatesWithReleasesFiltered(fileOrDir string, converge
 
 		return processed, errs
 	})
-	if err != nil {
-		return err
-	}
-	return nil
 }
 
 func (a *App) findStateFilesInAbsPaths(specifiedPath string) ([]string, error) {
@@ -243,6 +450,15 @@ func (a *App) findStateFilesInAbsPaths(specifiedPath string) ([]string, error) {
 }
 
 func (a *App) findDesiredStateFiles(specifiedPath string) ([]string, error) {
+	path, err := a.remote.Locate(specifiedPath)
+	if err != nil {
+		return nil, fmt.Errorf("locate: %v", err)
+	}
+	if specifiedPath != path {
+		a.Logger.Debugf("fetched remote \"%s\" to local cache \"%s\" and loading the latter...", specifiedPath, path)
+	}
+	specifiedPath = path
+
 	var helmfileDir string
 	if specifiedPath != "" {
 		if a.fileExistsAt(specifiedPath) {
@@ -275,11 +491,11 @@ func (a *App) findDesiredStateFiles(specifiedPath string) ([]string, error) {
 		} else if defaultFile != "" {
 			return []string{defaultFile}, nil
 		} else {
-			return []string{}, fmt.Errorf("no state file found. It must be named %s/*.yaml, %s, or %s, or otherwise specified with the --file flag", DefaultHelmfileDirectory, DefaultHelmfile, DeprecatedHelmfile)
+			return []string{}, fmt.Errorf("no state file found. It must be named %s/*.{yaml,yml}, %s, or %s, or otherwise specified with the --file flag", DefaultHelmfileDirectory, DefaultHelmfile, DeprecatedHelmfile)
 		}
 	}
 
-	files, err := a.glob(filepath.Join(helmfileDir, "*.yaml"))
+	files, err := a.glob(filepath.Join(helmfileDir, "*.y*ml"))
 	if err != nil {
 		return []string{}, err
 	}
@@ -294,98 +510,121 @@ func fileExistsAt(path string) bool {
 	return err == nil && fileInfo.Mode().IsRegular()
 }
 
+func fileExists(path string) (bool, error) {
+	_, err := os.Stat(path)
+
+	if err != nil {
+		if os.IsNotExist(err) {
+			return false, nil
+		}
+		return false, err
+	}
+	return true, nil
+}
+
 func directoryExistsAt(path string) bool {
 	fileInfo, err := os.Stat(path)
 	return err == nil && fileInfo.Mode().IsDir()
 }
 
-func (a *App) loadDesiredStateFromYaml(yaml []byte, file string, namespace string, env string) (*state.HelmState, error) {
-	c := state.NewCreator(a.Logger, a.readFile, a.abs)
-	st, err := c.CreateFromYaml(yaml, file, env)
-	if err != nil {
-		return nil, err
-	}
+type Error struct {
+	msg string
 
-	helmfiles := []string{}
-	for _, globPattern := range st.Helmfiles {
-		var absPathPattern string
-		if filepath.IsAbs(globPattern) {
-			absPathPattern = globPattern
-		} else {
-			absPathPattern = st.JoinBase(globPattern)
-		}
-		matches, err := a.glob(absPathPattern)
-		if err != nil {
-			return nil, fmt.Errorf("failed processing %s: %v", globPattern, err)
-		}
-		sort.Strings(matches)
-
-		helmfiles = append(helmfiles, matches...)
-	}
-	st.Helmfiles = helmfiles
-
-	if a.Reverse {
-		rev := func(i, j int) bool {
-			return j < i
-		}
-		sort.Slice(st.Releases, rev)
-		sort.Slice(st.Helmfiles, rev)
-	}
-
-	if a.KubeContext != "" {
-		if st.HelmDefaults.KubeContext != "" {
-			log.Printf("err: Cannot use option --kube-context and set attribute helmDefaults.kubeContext.")
-			os.Exit(1)
-		}
-		st.HelmDefaults.KubeContext = a.KubeContext
-	}
-	if namespace != "" {
-		if st.Namespace != "" {
-			log.Printf("err: Cannot use option --namespace and set attribute namespace.")
-			os.Exit(1)
-		}
-		st.Namespace = namespace
-	}
-
-	sigs := make(chan os.Signal, 1)
-	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
-	go func() {
-		sig := <-sigs
-
-		errs := []error{fmt.Errorf("Received [%s] to shutdown ", sig)}
-		_ = clean(st, errs)
-		// See http://tldp.org/LDP/abs/html/exitcodes.html
-		switch sig {
-		case syscall.SIGINT:
-			os.Exit(130)
-		case syscall.SIGTERM:
-			os.Exit(143)
-		}
-	}()
-
-	return st, nil
+	Errors []error
 }
 
-func clean(st *state.HelmState, errs []error) error {
+func (e *Error) Error() string {
+	var cause string
+	if e.Errors == nil {
+		return e.msg
+	}
+	if len(e.Errors) == 1 {
+		if e.Errors[0] == nil {
+			panic(fmt.Sprintf("[bug] assertion error: unexpected state: e.Errors: %v", e.Errors))
+		}
+		cause = e.Errors[0].Error()
+	} else {
+		msgs := []string{}
+		for i, err := range e.Errors {
+			if err == nil {
+				continue
+			}
+			msgs = append(msgs, fmt.Sprintf("err %d: %v", i, err.Error()))
+		}
+		cause = fmt.Sprintf("%d errors:\n%s", len(e.Errors), strings.Join(msgs, "\n"))
+	}
+	msg := ""
+	if e.msg != "" {
+		msg = fmt.Sprintf("%s: %s", e.msg, cause)
+	} else {
+		msg = cause
+	}
+	return msg
+}
+
+func (e *Error) Code() int {
+	allDiff := false
+	anyNonZero := false
+	for _, err := range e.Errors {
+		switch ee := err.(type) {
+		case *state.ReleaseError:
+			if anyNonZero {
+				allDiff = allDiff && ee.Code == 2
+			} else {
+				allDiff = ee.Code == 2
+			}
+		case *Error:
+			if anyNonZero {
+				allDiff = allDiff && ee.Code() == 2
+			} else {
+				allDiff = ee.Code() == 2
+			}
+		}
+		anyNonZero = true
+	}
+
+	if anyNonZero {
+		if allDiff {
+			return 2
+		}
+		return 1
+	}
+	panic(fmt.Sprintf("[bug] assertion error: unexpected state: unable to handle errors: %v", e.Errors))
+}
+
+func appError(msg string, err error) error {
+	return &Error{msg, []error{err}}
+}
+
+func (c context) clean(errs []error) error {
 	if errs == nil {
 		errs = []error{}
 	}
 
-	cleanErrs := st.Clean()
+	cleanErrs := c.st.Clean()
 	if cleanErrs != nil {
 		errs = append(errs, cleanErrs...)
 	}
 
+	return c.wrapErrs(errs...)
+}
+
+type context struct {
+	app *App
+	st  *state.HelmState
+}
+
+func (c context) wrapErrs(errs ...error) error {
 	if errs != nil && len(errs) > 0 {
 		for _, err := range errs {
 			switch e := err.(type) {
 			case *state.ReleaseError:
-				fmt.Printf("err: release \"%s\" in \"%s\" failed: %v\n", e.Name, st.FilePath, e)
+				c.app.Logger.Debugf("err: release \"%s\" in \"%s\" failed: %v", e.Name, c.st.FilePath, e)
 			default:
-				fmt.Printf("err: %v\n", e)
+				c.app.Logger.Debugf("err: %v", e)
 			}
 		}
-		return errs[0]
+		return &Error{Errors: errs}
 	}
 	return nil
 }

pkg/app/ask.go

@@ -1,4 +1,4 @@
-package main
+package app
 
 import (
 	"bufio"
@@ -11,7 +11,7 @@ import (
 // Copyright (c) 2017 Roland Singer [roland.singer@desertbit.com]
 //
 // Shamelessly borrowed from @r0l1's awesome work that is available at https://gist.github.com/r0l1/3dcbb0c8f6cfe9c66ab8008f55f8f28b
-func askForConfirmation(s string) bool {
+func AskForConfirmation(s string) bool {
 	reader := bufio.NewReader(os.Stdin)
 
 	for {

pkg/app/config.go

@@ -0,0 +1,132 @@
+package app
+
+import "go.uber.org/zap"
+
+type ConfigProvider interface {
+	Args() string
+	HelmBinary() string
+
+	FileOrDir() string
+	KubeContext() string
+	Namespace() string
+	Selectors() []string
+	Set() map[string]interface{}
+	ValuesFiles() []string
+	Env() string
+
+	loggingConfig
+}
+
+type DeprecatedChartsConfigProvider interface {
+	Values() []string
+
+	concurrencyConfig
+	loggingConfig
+}
+
+type DepsConfigProvider interface {
+	Args() string
+}
+
+type ReposConfigProvider interface {
+	Args() string
+}
+
+type ApplyConfigProvider interface {
+	Args() string
+
+	Values() []string
+	SkipDeps() bool
+
+	SuppressSecrets() bool
+
+	concurrencyConfig
+	interactive
+	loggingConfig
+}
+
+type SyncConfigProvider interface {
+	Args() string
+
+	Values() []string
+	SkipDeps() bool
+
+	concurrencyConfig
+	loggingConfig
+}
+
+type DiffConfigProvider interface {
+	Args() string
+
+	Values() []string
+	SkipDeps() bool
+
+	SuppressSecrets() bool
+
+	DetailedExitcode() bool
+
+	concurrencyConfig
+}
+
+type DeleteConfigProvider interface {
+	Args() string
+
+	Purge() bool
+
+	interactive
+	loggingConfig
+	concurrencyConfig
+}
+
+type DestroyConfigProvider interface {
+	Args() string
+
+	interactive
+	loggingConfig
+	concurrencyConfig
+}
+
+type TestConfigProvider interface {
+	Args() string
+
+	Timeout() int
+	Cleanup() bool
+
+	concurrencyConfig
+}
+
+type LintConfigProvider interface {
+	Args() string
+
+	Values() []string
+	SkipDeps() bool
+
+	concurrencyConfig
+}
+
+type TemplateConfigProvider interface {
+	Args() string
+
+	Values() []string
+	SkipDeps() bool
+
+	concurrencyConfig
+}
+
+type StatusesConfigProvider interface {
+	Args() string
+
+	concurrencyConfig
+}
+
+type concurrencyConfig interface {
+	Concurrency() int
+}
+
+type loggingConfig interface {
+	Logger() *zap.SugaredLogger
+}
+
+type interactive interface {
+	Interactive() bool
+}

pkg/app/constants.go

@@ -1,7 +1,22 @@
 package app
 
-const (
-	DefaultHelmfile          = "helmfile.yaml"
-	DeprecatedHelmfile       = "charts.yaml"
-	DefaultHelmfileDirectory = "helmfile.d"
+import (
+	"os"
+	"strings"
 )
+
+const (
+	DefaultHelmfile              = "helmfile.yaml"
+	DeprecatedHelmfile           = "charts.yaml"
+	DefaultHelmfileDirectory     = "helmfile.d"
+	ExperimentalEnvVar           = "HELMFILE_EXPERIMENTAL"         // environment variable for experimental features, expecting "true" lower case
+	ExperimentalSelectorExplicit = "explicit-selector-inheritance" // value to remove default selector inheritance to sub-helmfiles and use the explicit one
+)
+
+func experimentalModeEnabled() bool {
+	return os.Getenv(ExperimentalEnvVar) == "true"
+}
+
+func isExplicitSelectorInheritanceEnabled() bool {
+	return experimentalModeEnabled() || strings.Contains(os.Getenv(ExperimentalEnvVar), ExperimentalSelectorExplicit)
+}

pkg/app/constants_test.go

@@ -0,0 +1,27 @@
+package app
+
+import (
+	"gotest.tools/assert"
+	is "gotest.tools/assert/cmp"
+	"gotest.tools/env"
+	"os"
+	"testing"
+)
+
+func TestIsExplicitSelectorInheritanceEnabled(t *testing.T) {
+	//env var ExperimentalEnvVar is set
+	assert.Assert(t, is.Equal(os.Getenv(ExperimentalEnvVar), ""))
+	assert.Check(t, !isExplicitSelectorInheritanceEnabled())
+
+	//check for env var ExperimentalEnvVar set to true
+	defer env.Patch(t, ExperimentalEnvVar, "true")()
+	assert.Check(t, isExplicitSelectorInheritanceEnabled())
+
+	//check for env var ExperimentalEnvVar set to anything
+	defer env.Patch(t, ExperimentalEnvVar, "foo")()
+	assert.Check(t, !isExplicitSelectorInheritanceEnabled())
+
+	//check for env var ExperimentalEnvVar set to ExperimentalSelectorExplicit
+	defer env.Patch(t, ExperimentalEnvVar, ExperimentalSelectorExplicit)()
+	assert.Check(t, isExplicitSelectorInheritanceEnabled())
+}

pkg/app/context.go

@@ -1,6 +1,8 @@
 package app
 
-import "github.com/roboll/helmfile/state"
+import (
+	"github.com/roboll/helmfile/pkg/state"
+)
 
 type Context struct {
 	updatedRepos map[string]struct{}

pkg/app/desired_state_file_loader.go

@@ -0,0 +1,202 @@
+package app
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"github.com/imdario/mergo"
+	"github.com/roboll/helmfile/pkg/environment"
+	"github.com/roboll/helmfile/pkg/state"
+	"go.uber.org/zap"
+	"path/filepath"
+	"sort"
+)
+
+type desiredStateLoader struct {
+	KubeContext string
+	Reverse     bool
+
+	env       string
+	namespace string
+
+	readFile   func(string) ([]byte, error)
+	fileExists func(string) (bool, error)
+	abs        func(string) (string, error)
+	glob       func(string) ([]string, error)
+
+	logger *zap.SugaredLogger
+}
+
+func (ld *desiredStateLoader) Load(f string, opts LoadOpts) (*state.HelmState, error) {
+	var overrodeEnv *environment.Environment
+
+	args := opts.Environment.OverrideValues
+
+	if len(args) > 0 {
+		if opts.CalleePath == "" {
+			return nil, fmt.Errorf("bug: opts.CalleePath was nil: f=%s, opts=%v", f, opts)
+		}
+		storage := state.NewStorage(opts.CalleePath, ld.logger, ld.glob)
+		envld := state.NewEnvironmentValuesLoader(storage, ld.readFile, ld.logger)
+		handler := state.MissingFileHandlerError
+		vals, err := envld.LoadEnvironmentValues(&handler, args)
+		if err != nil {
+			return nil, err
+		}
+
+		overrodeEnv = &environment.Environment{
+			Name:   ld.env,
+			Values: vals,
+		}
+	}
+
+	st, err := ld.loadFileWithOverrides(nil, overrodeEnv, filepath.Dir(f), filepath.Base(f), true)
+	if err != nil {
+		return nil, err
+	}
+
+	if ld.Reverse {
+		rev := func(i, j int) bool {
+			return j < i
+		}
+		sort.Slice(st.Releases, rev)
+		sort.Slice(st.Helmfiles, rev)
+	}
+
+	if ld.KubeContext != "" {
+		if st.HelmDefaults.KubeContext != "" {
+			return nil, errors.New("err: Cannot use option --kube-context and set attribute helmDefaults.kubeContext.")
+		}
+		st.HelmDefaults.KubeContext = ld.KubeContext
+	}
+
+	if ld.namespace != "" {
+		if st.Namespace != "" {
+			return nil, errors.New("err: Cannot use option --namespace and set attribute namespace.")
+		}
+		st.Namespace = ld.namespace
+	}
+
+	return st, nil
+}
+
+func (ld *desiredStateLoader) loadFile(inheritedEnv *environment.Environment, baseDir, file string, evaluateBases bool) (*state.HelmState, error) {
+	return ld.loadFileWithOverrides(inheritedEnv, nil, baseDir, file, evaluateBases)
+}
+
+func (ld *desiredStateLoader) loadFileWithOverrides(inheritedEnv, overrodeEnv *environment.Environment, baseDir, file string, evaluateBases bool) (*state.HelmState, error) {
+	var f string
+	if filepath.IsAbs(file) {
+		f = file
+	} else {
+		f = filepath.Join(baseDir, file)
+	}
+
+	fileBytes, err := ld.readFile(f)
+	if err != nil {
+		return nil, err
+	}
+
+	ext := filepath.Ext(f)
+
+	var self *state.HelmState
+
+	if !experimentalModeEnabled() || ext == ".gotmpl" {
+		self, err = ld.renderAndLoad(
+			inheritedEnv,
+			overrodeEnv,
+			baseDir,
+			f,
+			fileBytes,
+			evaluateBases,
+		)
+	} else {
+		self, err = ld.load(
+			fileBytes,
+			baseDir,
+			file,
+			evaluateBases,
+			inheritedEnv,
+			overrodeEnv,
+		)
+	}
+
+	return self, err
+}
+
+func (a *desiredStateLoader) underlying() *state.StateCreator {
+	c := state.NewCreator(a.logger, a.readFile, a.fileExists, a.abs, a.glob)
+	c.LoadFile = a.loadFile
+	return c
+}
+
+func (a *desiredStateLoader) load(yaml []byte, baseDir, file string, evaluateBases bool, env, overrodeEnv *environment.Environment) (*state.HelmState, error) {
+	merged, err := env.Merge(overrodeEnv)
+	if err != nil {
+		return nil, err
+	}
+
+	st, err := a.underlying().ParseAndLoad(yaml, baseDir, file, a.env, evaluateBases, merged)
+	if err != nil {
+		return nil, err
+	}
+
+	helmfiles, err := st.ExpandedHelmfiles()
+	if err != nil {
+		return nil, err
+	}
+	st.Helmfiles = helmfiles
+
+	return st, nil
+}
+
+func (ld *desiredStateLoader) renderAndLoad(env, overrodeEnv *environment.Environment, baseDir, filename string, content []byte, evaluateBases bool) (*state.HelmState, error) {
+	parts := bytes.Split(content, []byte("\n---\n"))
+
+	var finalState *state.HelmState
+
+	for i, part := range parts {
+		var yamlBuf *bytes.Buffer
+		var err error
+
+		id := fmt.Sprintf("%s.part.%d", filename, i)
+
+		if env == nil && overrodeEnv == nil {
+			yamlBuf, err = ld.renderTemplatesToYaml(baseDir, id, part)
+			if err != nil {
+				return nil, fmt.Errorf("error during %s parsing: %v", id, err)
+			}
+		} else {
+			yamlBuf, err = ld.renderTemplatesToYamlWithEnv(baseDir, id, part, env, overrodeEnv)
+			if err != nil {
+				return nil, fmt.Errorf("error during %s parsing: %v", id, err)
+			}
+		}
+
+		currentState, err := ld.load(
+			yamlBuf.Bytes(),
+			baseDir,
+			filename,
+			evaluateBases,
+			env,
+			overrodeEnv,
+		)
+		if err != nil {
+			return nil, err
+		}
+
+		if finalState == nil {
+			finalState = currentState
+		} else {
+			if err := mergo.Merge(finalState, currentState, mergo.WithOverride); err != nil {
+				return nil, err
+			}
+		}
+
+		env = &finalState.Env
+
+		ld.logger.Debugf("merged environment: %v", env)
+	}
+
+	return finalState, nil
+}

pkg/app/load_opts.go

@@ -0,0 +1,28 @@
+package app
+
+import (
+	"github.com/roboll/helmfile/pkg/state"
+	"gopkg.in/yaml.v2"
+)
+
+type LoadOpts struct {
+	Selectors   []string
+	Environment state.SubhelmfileEnvironmentSpec
+
+	// CalleePath is the absolute path to the file being loaded
+	CalleePath string
+}
+
+func (o LoadOpts) DeepCopy() LoadOpts {
+	bytes, err := yaml.Marshal(o)
+	if err != nil {
+		panic(err)
+	}
+
+	new := LoadOpts{}
+	if err := yaml.Unmarshal(bytes, &new); err != nil {
+		panic(err)
+	}
+
+	return new
+}

pkg/app/run.go

@@ -0,0 +1,306 @@
+package app
+
+import (
+	"fmt"
+	"github.com/roboll/helmfile/pkg/argparser"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"github.com/roboll/helmfile/pkg/state"
+	"strings"
+)
+
+type Run struct {
+	state *state.HelmState
+	helm  helmexec.Interface
+	ctx   Context
+
+	Ask func(string) bool
+}
+
+func NewRun(st *state.HelmState, helm helmexec.Interface, ctx Context) *Run {
+	return &Run{state: st, helm: helm, ctx: ctx}
+}
+
+func (r *Run) askForConfirmation(msg string) bool {
+	if r.Ask != nil {
+		return r.Ask(msg)
+	}
+	return AskForConfirmation(msg)
+}
+
+func (r *Run) Deps(c DepsConfigProvider) []error {
+	r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+	if errs := r.ctx.SyncReposOnce(r.state, r.helm); errs != nil && len(errs) > 0 {
+		return errs
+	}
+
+	return r.state.UpdateDeps(r.helm)
+}
+
+func (r *Run) Repos(c ReposConfigProvider) []error {
+	r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+	return r.ctx.SyncReposOnce(r.state, r.helm)
+}
+
+func (r *Run) DeprecatedSyncCharts(c DeprecatedChartsConfigProvider) []error {
+	st := r.state
+	helm := r.helm
+
+	affectedReleases := state.AffectedReleases{}
+	errs := st.SyncReleases(&affectedReleases, helm, c.Values(), c.Concurrency())
+	affectedReleases.DisplayAffectedReleases(c.Logger())
+	return errs
+}
+
+func (r *Run) Status(c StatusesConfigProvider) []error {
+	workers := c.Concurrency()
+
+	r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+	return r.state.ReleaseStatuses(r.helm, workers)
+}
+
+func (r *Run) Delete(c DeleteConfigProvider) []error {
+	affectedReleases := state.AffectedReleases{}
+	purge := c.Purge()
+
+	errs := []error{}
+
+	names := make([]string, len(r.state.Releases))
+	for i, r := range r.state.Releases {
+		names[i] = fmt.Sprintf("  %s (%s)", r.Name, r.Chart)
+	}
+
+	msg := fmt.Sprintf(`Affected releases are:
+%s
+
+Do you really want to delete?
+  Helmfile will delete all your releases, as shown above.
+
+`, strings.Join(names, "\n"))
+	interactive := c.Interactive()
+	if !interactive || interactive && r.askForConfirmation(msg) {
+		r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+		errs = r.state.DeleteReleases(&affectedReleases, r.helm, c.Concurrency(), purge)
+	}
+	affectedReleases.DisplayAffectedReleases(c.Logger())
+	return errs
+}
+
+func (r *Run) Destroy(c DestroyConfigProvider) []error {
+	errs := []error{}
+	affectedReleases := state.AffectedReleases{}
+
+	names := make([]string, len(r.state.Releases))
+	for i, r := range r.state.Releases {
+		names[i] = fmt.Sprintf("  %s (%s)", r.Name, r.Chart)
+	}
+
+	msg := fmt.Sprintf(`Affected releases are:
+%s
+
+Do you really want to delete?
+  Helmfile will delete all your releases, as shown above.
+
+`, strings.Join(names, "\n"))
+	interactive := c.Interactive()
+	if !interactive || interactive && r.askForConfirmation(msg) {
+		r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+		errs = r.state.DeleteReleases(&affectedReleases, r.helm, c.Concurrency(), true)
+	}
+	affectedReleases.DisplayAffectedReleases(c.Logger())
+	return errs
+}
+
+func (r *Run) Apply(c ApplyConfigProvider) []error {
+	st := r.state
+	helm := r.helm
+	ctx := r.ctx
+
+	affectedReleases := state.AffectedReleases{}
+	if !c.SkipDeps() {
+		if errs := ctx.SyncReposOnce(st, helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+		if errs := st.BuildDeps(helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+	}
+	if errs := st.PrepareReleases(helm, "apply"); errs != nil && len(errs) > 0 {
+		return errs
+	}
+
+	// helm must be 2.11+ and helm-diff should be provided `--detailed-exitcode` in order for `helmfile apply` to work properly
+	detailedExitCode := true
+
+	releases, errs := st.DiffReleases(helm, c.Values(), c.Concurrency(), detailedExitCode, c.SuppressSecrets(), false)
+
+	releasesToBeDeleted, err := st.DetectReleasesToBeDeleted(helm)
+	if err != nil {
+		errs = append(errs, err)
+	}
+
+	fatalErrs := []error{}
+
+	noError := true
+	for _, e := range errs {
+		switch err := e.(type) {
+		case *state.ReleaseError:
+			if err.Code != 2 {
+				noError = false
+				fatalErrs = append(fatalErrs, e)
+			}
+		default:
+			noError = false
+			fatalErrs = append(fatalErrs, e)
+		}
+	}
+
+	// sync only when there are changes
+	if noError {
+		if len(releases) == 0 && len(releasesToBeDeleted) == 0 {
+			// TODO better way to get the logger
+			logger := c.Logger()
+			logger.Infof("")
+			logger.Infof("No affected releases")
+		} else {
+			names := []string{}
+			for _, r := range releases {
+				names = append(names, fmt.Sprintf("  %s (%s) UPDATED", r.Name, r.Chart))
+			}
+			for _, r := range releasesToBeDeleted {
+				names = append(names, fmt.Sprintf("  %s (%s) DELETED", r.Name, r.Chart))
+			}
+
+			msg := fmt.Sprintf(`Affected releases are:
+%s
+
+Do you really want to apply?
+  Helmfile will apply all your changes, as shown above.
+
+`, strings.Join(names, "\n"))
+			interactive := c.Interactive()
+			if !interactive || interactive && r.askForConfirmation(msg) {
+				rs := []state.ReleaseSpec{}
+				for _, r := range releases {
+					rs = append(rs, *r)
+				}
+				for _, r := range releasesToBeDeleted {
+					rs = append(rs, *r)
+				}
+
+				r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+				st.Releases = rs
+				return st.SyncReleases(&affectedReleases, helm, c.Values(), c.Concurrency())
+			}
+		}
+	}
+
+	affectedReleases.DisplayAffectedReleases(c.Logger())
+	return fatalErrs
+}
+
+func (r *Run) Diff(c DiffConfigProvider) []error {
+	st := r.state
+	helm := r.helm
+	ctx := r.ctx
+
+	if !c.SkipDeps() {
+		if errs := ctx.SyncReposOnce(st, helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+		if errs := st.BuildDeps(helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+	}
+	if errs := st.PrepareReleases(helm, "diff"); errs != nil && len(errs) > 0 {
+		return errs
+	}
+
+	r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+	_, errs := st.DiffReleases(helm, c.Values(), c.Concurrency(), c.DetailedExitcode(), c.SuppressSecrets(), true)
+	return errs
+}
+
+func (r *Run) Sync(c SyncConfigProvider) []error {
+	st := r.state
+	helm := r.helm
+	ctx := r.ctx
+
+	affectedReleases := state.AffectedReleases{}
+	if !c.SkipDeps() {
+		if errs := ctx.SyncReposOnce(st, helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+		if errs := st.BuildDeps(helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+	}
+	if errs := st.PrepareReleases(helm, "sync"); errs != nil && len(errs) > 0 {
+		return errs
+	}
+
+	r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+	errs := st.SyncReleases(&affectedReleases, helm, c.Values(), c.Concurrency())
+	affectedReleases.DisplayAffectedReleases(c.Logger())
+	return errs
+}
+
+func (r *Run) Template(c TemplateConfigProvider) []error {
+	state := r.state
+	helm := r.helm
+	ctx := r.ctx
+
+	if !c.SkipDeps() {
+		if errs := ctx.SyncReposOnce(state, helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+		if errs := state.BuildDeps(helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+	}
+	if errs := state.PrepareReleases(helm, "template"); errs != nil && len(errs) > 0 {
+		return errs
+	}
+
+	args := argparser.GetArgs(c.Args(), state)
+	return state.TemplateReleases(helm, c.Values(), args, c.Concurrency())
+}
+
+func (r *Run) Test(c TestConfigProvider) []error {
+	cleanup := c.Cleanup()
+	timeout := c.Timeout()
+	concurrency := c.Concurrency()
+
+	r.helm.SetExtraArgs(argparser.GetArgs(c.Args(), r.state)...)
+
+	return r.state.TestReleases(r.helm, cleanup, timeout, concurrency)
+}
+
+func (r *Run) Lint(c LintConfigProvider) []error {
+	state := r.state
+	helm := r.helm
+	ctx := r.ctx
+
+	values := c.Values()
+	args := argparser.GetArgs(c.Args(), state)
+	workers := c.Concurrency()
+	if !c.SkipDeps() {
+		if errs := ctx.SyncReposOnce(state, helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+		if errs := state.BuildDeps(helm); errs != nil && len(errs) > 0 {
+			return errs
+		}
+	}
+	if errs := state.PrepareReleases(helm, "lint"); errs != nil && len(errs) > 0 {
+		return errs
+	}
+	return state.LintReleases(helm, values, args, workers)
+}

pkg/app/two_pass_renderer.go

@@ -3,11 +3,10 @@ package app
 import (
 	"bytes"
 	"fmt"
-	"github.com/roboll/helmfile/environment"
-	"github.com/roboll/helmfile/state"
-	"github.com/roboll/helmfile/tmpl"
-	"go.uber.org/zap"
-	"path/filepath"
+	"github.com/google/go-cmp/cmp"
+	"github.com/roboll/helmfile/pkg/environment"
+	"github.com/roboll/helmfile/pkg/state"
+	"github.com/roboll/helmfile/pkg/tmpl"
 	"strings"
 )
 
@@ -20,61 +19,127 @@ func prependLineNumbers(text string) string {
 	return buf.String()
 }
 
-type twoPassRenderer struct {
-	reader    func(string) ([]byte, error)
-	env       string
-	namespace string
-	filename  string
-	logger    *zap.SugaredLogger
-	abs       func(string) (string, error)
-}
-
-func (r *twoPassRenderer) renderEnvironment(content []byte) environment.Environment {
-	firstPassEnv := environment.Environment{Name: r.env, Values: map[string]interface{}(nil)}
-	tmplData := state.EnvironmentTemplateData{Environment: firstPassEnv, Namespace: r.namespace}
-	firstPassRenderer := tmpl.NewFirstPassRenderer(filepath.Dir(r.filename), tmplData)
+func (r *desiredStateLoader) renderPrestate(firstPassEnv *environment.Environment, baseDir, filename string, content []byte) (*environment.Environment, *state.HelmState) {
+	tmplData := state.EnvironmentTemplateData{
+		Environment: *firstPassEnv,
+		Namespace:   r.namespace,
+		Values:      map[string]interface{}{},
+	}
+	firstPassRenderer := tmpl.NewFirstPassRenderer(baseDir, tmplData)
 
 	// parse as much as we can, tolerate errors, this is a preparse
 	yamlBuf, err := firstPassRenderer.RenderTemplateContentToBuffer(content)
 	if err != nil && r.logger != nil {
-		r.logger.Debugf("first-pass rendering input of \"%s\":\n%s", r.filename, prependLineNumbers(string(content)))
+		r.logger.Debugf("first-pass rendering input of \"%s\":\n%s", filename, prependLineNumbers(string(content)))
 		if yamlBuf == nil { // we have a template syntax error, let the second parse report
 			r.logger.Debugf("template syntax error: %v", err)
-			return firstPassEnv
+			return firstPassEnv, nil
 		}
 	}
-	c := state.NewCreator(r.logger, r.reader, r.abs)
+	yamlData := yamlBuf.String()
+
+	// Work-around for https://github.com/golang/go/issues/24963
+	sanitized := strings.ReplaceAll(yamlData, "<no value>", "")
+
+	if len(yamlData) != len(sanitized) {
+		msg := "replaced <no value>s to workaround https://github.com/golang/go/issues/24963 to address https://github.com/roboll/helmfile/issues/553:\n%s"
+		r.logger.Debugf(msg, cmp.Diff(yamlData, sanitized))
+	}
+
+	c := r.underlying()
 	c.Strict = false
 	// create preliminary state, as we may have an environment. Tolerate errors.
-	prestate, err := c.CreateFromYaml(yamlBuf.Bytes(), r.filename, r.env)
+	prestate, err := c.ParseAndLoad([]byte(sanitized), baseDir, filename, r.env, false, firstPassEnv)
 	if err != nil && r.logger != nil {
 		switch err.(type) {
 		case *state.StateLoadError:
 			r.logger.Infof("could not deduce `environment:` block, configuring only .Environment.Name. error: %v", err)
 		}
-		r.logger.Debugf("error in first-pass rendering: result of \"%s\":\n%s", r.filename, prependLineNumbers(yamlBuf.String()))
+		r.logger.Debugf("error in first-pass rendering: result of \"%s\":\n%s", filename, prependLineNumbers(yamlBuf.String()))
 	}
+
 	if prestate != nil {
-		firstPassEnv = prestate.Env
+		firstPassEnv = &prestate.Env
 	}
-	return firstPassEnv
+
+	return firstPassEnv, prestate
 }
 
-func (r *twoPassRenderer) renderTemplate(content []byte) (*bytes.Buffer, error) {
-	// try a first pass render. This will always succeed, but can produce a limited env
-	firstPassEnv := r.renderEnvironment(content)
+type RenderOpts struct {
+}
 
-	tmplData := state.EnvironmentTemplateData{Environment: firstPassEnv, Namespace: r.namespace}
-	secondPassRenderer := tmpl.NewFileRenderer(r.reader, filepath.Dir(r.filename), tmplData)
+func (r *desiredStateLoader) renderTemplatesToYaml(baseDir, filename string, content []byte) (*bytes.Buffer, error) {
+	env := &environment.Environment{Name: r.env, Values: map[string]interface{}(nil)}
+
+	return r.renderTemplatesToYamlWithEnv(baseDir, filename, content, env, nil)
+}
+
+func (r *desiredStateLoader) renderTemplatesToYamlWithEnv(baseDir, filename string, content []byte, inherited, overrode *environment.Environment) (*bytes.Buffer, error) {
+	return r.twoPassRenderTemplateToYaml(inherited, overrode, baseDir, filename, content)
+}
+
+func (r *desiredStateLoader) twoPassRenderTemplateToYaml(inherited, overrode *environment.Environment, baseDir, filename string, content []byte) (*bytes.Buffer, error) {
+	// try a first pass render. This will always succeed, but can produce a limited env
+	if r.logger != nil {
+		r.logger.Debugf("first-pass rendering starting for \"%s\": inherited=%v, overrode=%v", filename, inherited, overrode)
+	}
+
+	initEnv, err := inherited.Merge(overrode)
+	if err != nil {
+		return nil, err
+	}
+
+	if r.logger != nil {
+		r.logger.Debugf("first-pass uses: %v", initEnv)
+	}
+
+	renderedEnv, prestate := r.renderPrestate(initEnv, baseDir, filename, content)
+
+	if r.logger != nil {
+		r.logger.Debugf("first-pass produced: %v", renderedEnv)
+	}
+
+	finalEnv, err := inherited.Merge(renderedEnv)
+	if err != nil {
+		return nil, err
+	}
+
+	finalEnv, err = finalEnv.Merge(overrode)
+	if err != nil {
+		return nil, err
+	}
+
+	if r.logger != nil {
+		r.logger.Debugf("first-pass rendering result of \"%s\": %v", filename, *finalEnv)
+	}
+
+	vals := map[string]interface{}{}
+	if prestate != nil {
+		prestate.Env = *finalEnv
+		vals, err = prestate.Values()
+		if err != nil {
+			return nil, err
+		}
+	}
+	if prestate != nil {
+		r.logger.Debugf("vals:\n%v\ndefaultVals:%v", vals, prestate.DefaultValues)
+	}
+
+	tmplData := state.EnvironmentTemplateData{
+		Environment: *finalEnv,
+		Namespace:   r.namespace,
+		Values:      vals,
+	}
+	secondPassRenderer := tmpl.NewFileRenderer(r.readFile, baseDir, tmplData)
 	yamlBuf, err := secondPassRenderer.RenderTemplateContentToBuffer(content)
 	if err != nil {
 		if r.logger != nil {
-			r.logger.Debugf("second-pass rendering failed, input of \"%s\":\n%s", r.filename, prependLineNumbers(string(content)))
+			r.logger.Debugf("second-pass rendering failed, input of \"%s\":\n%s", filename, prependLineNumbers(string(content)))
 		}
 		return nil, err
 	}
 	if r.logger != nil {
-		r.logger.Debugf("second-pass rendering result of \"%s\":\n%s", r.filename, prependLineNumbers(yamlBuf.String()))
+		r.logger.Debugf("second-pass rendering result of \"%s\":\n%s", filename, prependLineNumbers(yamlBuf.String()))
 	}
 	return yamlBuf, nil
 }

pkg/app/two_pass_renderer_test.go

@@ -1,26 +1,27 @@
 package app
 
 import (
-	"fmt"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"github.com/roboll/helmfile/pkg/state"
+	"github.com/roboll/helmfile/pkg/testhelper"
 	"os"
-	"path/filepath"
 	"strings"
 	"testing"
 
-	"github.com/roboll/helmfile/helmexec"
-	"github.com/roboll/helmfile/state"
 	"gopkg.in/yaml.v2"
 )
 
-func makeRenderer(readFile func(string) ([]byte, error), env string) *twoPassRenderer {
-	return &twoPassRenderer{
-		reader:    readFile,
-		env:       env,
-		namespace: "namespace",
-		filename:  "",
-		logger:    helmexec.NewLogger(os.Stdout, "debug"),
-		abs:       filepath.Abs,
-	}
+func makeLoader(files map[string]string, env string) (*desiredStateLoader, *testhelper.TestFs) {
+	testfs := testhelper.NewTestFs(files)
+	return &desiredStateLoader{
+		env:        env,
+		namespace:  "namespace",
+		logger:     helmexec.NewLogger(os.Stdout, "debug"),
+		readFile:   testfs.ReadFile,
+		fileExists: testfs.FileExists,
+		abs:        testfs.Abs,
+		glob:       testfs.Glob,
+	}, testfs
 }
 
 func TestReadFromYaml_MakeEnvironmentHasNoSideEffects(t *testing.T) {
@@ -37,30 +38,21 @@ releases:
   chart: mychart1
 `)
 
-	fileReaderCalls := 0
-	// make a reader that returns a simulated context
-	fileReader := func(filename string) ([]byte, error) {
-		expectedFilename := filepath.Clean("default/values.yaml")
-		if !strings.HasSuffix(filename, expectedFilename) {
-			return nil, fmt.Errorf("unexpected filename: expected=%s, actual=%s", expectedFilename, filename)
-		}
-		fileReaderCalls++
-		if fileReaderCalls == 2 {
-			return []byte("SecondPass"), nil
-		}
-		return []byte(""), nil
+	files := map[string]string{
+		"/path/to/default/values.yaml":       ``,
+		"/path/to/other/default/values.yaml": `SecondPass`,
 	}
 
-	r := makeRenderer(fileReader, "staging")
-	yamlBuf, err := r.renderTemplate(yamlContent)
+	r, testfs := makeLoader(files, "staging")
+	yamlBuf, err := r.renderTemplatesToYaml("", "", yamlContent)
 	if err != nil {
-		t.Errorf("unexpected error: %v", err)
+		t.Fatalf("unexpected error: %v", err)
 	}
 
 	var state state.HelmState
 	err = yaml.Unmarshal(yamlBuf.Bytes(), &state)
 
-	if fileReaderCalls > 2 {
+	if testfs.FileReaderCalls() > 2 {
 		t.Error("reader should be called only twice")
 	}
 
@@ -71,10 +63,10 @@ releases:
 
 func TestReadFromYaml_RenderTemplate(t *testing.T) {
 
-	defaultValuesYaml := []byte(`
+	defaultValuesYaml := `
 releaseName: "hello"
 conditionalReleaseTag: "yes"
-`)
+`
 
 	yamlContent := []byte(`
 environments:
@@ -93,18 +85,13 @@ releases:
 
 `)
 
-	// make a reader that returns a simulated context
-	fileReader := func(filename string) ([]byte, error) {
-		expectedFilename := filepath.Clean("default/values.yaml")
-		if !strings.HasSuffix(filename, expectedFilename) {
-			return nil, fmt.Errorf("unexpected filename: expected=%s, actual=%s", expectedFilename, filename)
-		}
-		return defaultValuesYaml, nil
+	files := map[string]string{
+		"/path/to/default/values.yaml": defaultValuesYaml,
 	}
 
-	r := makeRenderer(fileReader, "staging")
+	r, _ := makeLoader(files, "staging")
 	// test the double rendering
-	yamlBuf, err := r.renderTemplate(yamlContent)
+	yamlBuf, err := r.renderTemplatesToYaml("", "", yamlContent)
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -130,7 +117,7 @@ releases:
 }
 
 func TestReadFromYaml_RenderTemplateWithValuesReferenceError(t *testing.T) {
-	defaultValuesYaml := []byte("")
+	defaultValuesYaml := ``
 
 	yamlContent := []byte(`
 environments:
@@ -146,14 +133,13 @@ releases:
 {{ end }}
 `)
 
-	// make a reader that returns a simulated context
-	fileReader := func(filename string) ([]byte, error) {
-		return defaultValuesYaml, nil
+	files := map[string]string{
+		"/path/to/default/values.yaml": defaultValuesYaml,
 	}
 
-	r := makeRenderer(fileReader, "staging")
+	r, _ := makeLoader(files, "staging")
 	// test the double rendering
-	_, err := r.renderTemplate(yamlContent)
+	_, err := r.renderTemplatesToYaml("", "", yamlContent)
 
 	if !strings.Contains(err.Error(), "stringTemplate:8") {
 		t.Fatalf("error should contain a stringTemplate error (reference to unknow key) %v", err)
@@ -165,9 +151,9 @@ releases:
 // This does not apply to .gotmpl files, which is a nice side-effect.
 func TestReadFromYaml_RenderTemplateWithGotmpl(t *testing.T) {
 
-	defaultValuesYamlGotmpl := []byte(`
+	defaultValuesYamlGotmpl := `
 releaseName: {{ readFile "nonIgnoredFile" }}
-`)
+`
 
 	yamlContent := []byte(`
 environments:
@@ -183,15 +169,13 @@ releases:
 {{ end }}
 `)
 
-	fileReader := func(filename string) ([]byte, error) {
-		if strings.HasSuffix(filename, "nonIgnoredFile") {
-			return []byte("release-a"), nil
-		}
-		return defaultValuesYamlGotmpl, nil
+	files := map[string]string{
+		"/path/to/nonIgnoredFile":     `release-a`,
+		"/path/to/values.yaml.gotmpl": defaultValuesYamlGotmpl,
 	}
 
-	r := makeRenderer(fileReader, "staging")
-	rendered, _ := r.renderTemplate(yamlContent)
+	r, _ := makeLoader(files, "staging")
+	rendered, _ := r.renderTemplatesToYaml("", "", yamlContent)
 
 	var state state.HelmState
 	yaml.Unmarshal(rendered.Bytes(), &state)
@@ -206,19 +190,15 @@ releases:
 }
 
 func TestReadFromYaml_RenderTemplateWithNamespace(t *testing.T) {
-	defaultValuesYaml := []byte(``)
 	yamlContent := []byte(`releases:
 - name: {{ .Namespace }}-myrelease
   chart: mychart
 `)
 
-	// make a reader that returns a simulated context
-	fileReader := func(filename string) ([]byte, error) {
-		return defaultValuesYaml, nil
-	}
+	files := map[string]string{}
 
-	r := makeRenderer(fileReader, "staging")
-	yamlBuf, err := r.renderTemplate(yamlContent)
+	r, _ := makeLoader(files, "staging")
+	yamlBuf, err := r.renderTemplatesToYaml("", "", yamlContent)
 	if err != nil {
 		t.Fatalf("unexpected error: %v", err)
 	}
@@ -231,7 +211,7 @@ func TestReadFromYaml_RenderTemplateWithNamespace(t *testing.T) {
 	}
 }
 
-func TestReadFromYaml_HelfileShouldBeResilentToTemplateErrors(t *testing.T) {
+func TestReadFromYaml_HelmfileShouldBeResilentToTemplateErrors(t *testing.T) {
 	yamlContent := []byte(`environments:
   staging:
 	production:
@@ -244,12 +224,9 @@ releases:
 {{ end }}
   chart: mychart
 `)
-	fileReader := func(filename string) ([]byte, error) {
-		return yamlContent, nil
-	}
 
-	r := makeRenderer(fileReader, "staging")
-	_, err := r.renderTemplate(yamlContent)
+	r, _ := makeLoader(map[string]string{}, "staging")
+	_, err := r.renderTemplatesToYaml("", "", yamlContent)
 	if err == nil {
 		t.Fatalf("wanted error, none returned")
 	}

pkg/argparser/args.go

@@ -1,10 +1,9 @@
-package args
+package argparser
 
 import (
 	"fmt"
+	"github.com/roboll/helmfile/pkg/state"
 	"strings"
-
-	"github.com/roboll/helmfile/state"
 )
 
 type keyVal struct {
@@ -83,13 +82,6 @@ func GetArgs(args string, state *state.HelmState) []string {
 		}
 	}
 
-	if state.HelmDefaults.TillerNamespace != "" {
-		argsMap.SetArg("--tiller-namespace", state.HelmDefaults.TillerNamespace, false)
-	}
-	if state.HelmDefaults.KubeContext != "" {
-		argsMap.SetArg("--kube-context", state.HelmDefaults.KubeContext, false)
-	}
-
 	var argArr []string
 
 	for _, flag := range argsMap.flags {

pkg/argparser/args_test.go

@@ -1,10 +1,9 @@
-package args
+package argparser
 
 import (
+	"github.com/roboll/helmfile/pkg/state"
 	"strings"
 	"testing"
-
-	"github.com/roboll/helmfile/state"
 )
 
 func TestGetArgs(t *testing.T) {
@@ -14,7 +13,7 @@ func TestGetArgs(t *testing.T) {
 	testState := &state.HelmState{HelmDefaults: Helmdefaults}
 	receivedArgs := GetArgs(args, testState)
 
-	expectedOutput := "--timeout=3600 --set app1.bootstrap=true --set app2.bootstrap=false --tiller-namespace ns --recreate-pods --force --kube-context=test"
+	expectedOutput := "--timeout=3600 --set app1.bootstrap=true --set app2.bootstrap=false --tiller-namespace ns --recreate-pods --force"
 
 	if compareArgs(expectedOutput, receivedArgs) == false {
 		t.Errorf("expected %s, got %s", expectedOutput, strings.Join(receivedArgs, " "))
@@ -28,7 +27,7 @@ func Test2(t *testing.T) {
 	testState := &state.HelmState{HelmDefaults: Helmdefaults}
 	receivedArgs := GetArgs(args, testState)
 
-	expectedOutput := "--timeout=3600 --set app1.bootstrap=true --set app2.bootstrap=false,app3.bootstrap=true --tiller-namespace ns --recreate-pods --force --kube-context=test"
+	expectedOutput := "--timeout=3600 --set app1.bootstrap=true --set app2.bootstrap=false,app3.bootstrap=true --tiller-namespace ns --recreate-pods --force"
 
 	if compareArgs(expectedOutput, receivedArgs) == false {
 		t.Errorf("expected %s, got %s", expectedOutput, strings.Join(receivedArgs, " "))

pkg/environment/environment.go

@@ -0,0 +1,66 @@
+package environment
+
+import (
+	"github.com/imdario/mergo"
+	"github.com/roboll/helmfile/pkg/maputil"
+	"gopkg.in/yaml.v2"
+)
+
+type Environment struct {
+	Name     string
+	Values   map[string]interface{}
+	Defaults map[string]interface{}
+}
+
+var EmptyEnvironment Environment
+
+func (e Environment) DeepCopy() Environment {
+	valuesBytes, err := yaml.Marshal(e.Values)
+	if err != nil {
+		panic(err)
+	}
+	var values map[string]interface{}
+	if err := yaml.Unmarshal(valuesBytes, &values); err != nil {
+		panic(err)
+	}
+	values, err = maputil.CastKeysToStrings(values)
+	if err != nil {
+		panic(err)
+	}
+
+	defaultsBytes, err := yaml.Marshal(e.Defaults)
+	if err != nil {
+		panic(err)
+	}
+	var defaults map[string]interface{}
+	if err := yaml.Unmarshal(defaultsBytes, &defaults); err != nil {
+		panic(err)
+	}
+	defaults, err = maputil.CastKeysToStrings(defaults)
+	if err != nil {
+		panic(err)
+	}
+
+	return Environment{
+		Name:     e.Name,
+		Values:   values,
+		Defaults: defaults,
+	}
+}
+
+func (e *Environment) Merge(other *Environment) (*Environment, error) {
+	if e == nil {
+		if other != nil {
+			copy := other.DeepCopy()
+			return &copy, nil
+		}
+		return nil, nil
+	}
+	copy := e.DeepCopy()
+	if other != nil {
+		if err := mergo.Merge(&copy, other, mergo.WithOverride); err != nil {
+			return nil, err
+		}
+	}
+	return &copy, nil
+}

pkg/event/bus.go

@@ -2,18 +2,21 @@ package event
 
 import (
 	"fmt"
-	"github.com/roboll/helmfile/environment"
-	"github.com/roboll/helmfile/helmexec"
-	"github.com/roboll/helmfile/tmpl"
-	"go.uber.org/zap"
 	"os"
+	"strings"
+
+	"github.com/roboll/helmfile/pkg/environment"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"github.com/roboll/helmfile/pkg/tmpl"
+	"go.uber.org/zap"
 )
 
 type Hook struct {
-	Name    string   `yaml:"name"`
-	Events  []string `yaml:"events"`
-	Command string   `yaml:"command"`
-	Args    []string `yaml:"args"`
+	Name     string   `yaml:"name"`
+	Events   []string `yaml:"events"`
+	Command  string   `yaml:"command"`
+	Args     []string `yaml:"args"`
+	ShowLogs bool     `yaml:"showlogs"`
 }
 
 type event struct {
@@ -88,8 +91,12 @@ func (bus *Bus) Trigger(evt string, context map[string]interface{}) (bool, error
 			}
 		}
 
-		bytes, err := bus.Runner.Execute(command, args)
+		bytes, err := bus.Runner.Execute(command, args, map[string]string{})
 		bus.Logger.Debugf("hook[%s]: %s\n", name, string(bytes))
+		if hook.ShowLogs {
+			prefix := fmt.Sprintf("\nhook[%s] logs | ", evt)
+			bus.Logger.Infow(prefix + strings.ReplaceAll(string(bytes), "\n", prefix))
+		}
 
 		if err != nil {
 			return false, fmt.Errorf("hook[%s]: command `%s` failed: %v", name, command, err)

pkg/event/bus_test.go

@@ -2,10 +2,13 @@ package event
 
 import (
 	"fmt"
-	"github.com/roboll/helmfile/environment"
-	"github.com/roboll/helmfile/helmexec"
 	"os"
 	"testing"
+
+	"github.com/roboll/helmfile/pkg/environment"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zaptest/observer"
 )
 
 var logger = helmexec.NewLogger(os.Stdout, "warn")
@@ -13,7 +16,7 @@ var logger = helmexec.NewLogger(os.Stdout, "warn")
 type runner struct {
 }
 
-func (r *runner) Execute(cmd string, args []string) ([]byte, error) {
+func (r *runner) Execute(cmd string, args []string, env map[string]string) ([]byte, error) {
 	if cmd == "ng" {
 		return nil, fmt.Errorf("cmd failed due to invalid cmd: %s", cmd)
 	}
@@ -35,14 +38,21 @@ func TestTrigger(t *testing.T) {
 	}{
 		{
 			"okhook1",
-			&Hook{"okhook1", []string{"foo"}, "ok", []string{}},
+			&Hook{"okhook1", []string{"foo"}, "ok", []string{}, true},
+			"foo",
+			true,
+			"",
+		},
+		{
+			"okhooké",
+			&Hook{"okhook2", []string{"foo"}, "ok", []string{}, false},
 			"foo",
 			true,
 			"",
 		},
 		{
 			"missinghook1",
-			&Hook{"okhook1", []string{"foo"}, "ok", []string{}},
+			&Hook{"okhook1", []string{"foo"}, "ok", []string{}, false},
 			"bar",
 			false,
 			"",
@@ -56,14 +66,14 @@ func TestTrigger(t *testing.T) {
 		},
 		{
 			"nghook1",
-			&Hook{"nghook1", []string{"foo"}, "ng", []string{}},
+			&Hook{"nghook1", []string{"foo"}, "ng", []string{}, false},
 			"foo",
 			false,
 			"hook[nghook1]: command `ng` failed: cmd failed due to invalid cmd: ng",
 		},
 		{
 			"nghook2",
-			&Hook{"nghook2", []string{"foo"}, "ok", []string{"ng"}},
+			&Hook{"nghook2", []string{"foo"}, "ok", []string{"ng"}, false},
 			"foo",
 			false,
 			"hook[nghook2]: command `ok` failed: cmd failed due to invalid arg: ng",
@@ -77,13 +87,15 @@ func TestTrigger(t *testing.T) {
 		if c.hook != nil {
 			hooks = append(hooks, *c.hook)
 		}
+		observer, observedLogs := observer.New(zap.InfoLevel)
+		zeLogger := zap.New(observer).Sugar()
 		bus := &Bus{
 			Hooks:         hooks,
 			StateFilePath: "path/to/helmfile.yaml",
 			BasePath:      "path/to",
 			Namespace:     "myns",
 			Env:           environment.Environment{Name: "prod"},
-			Logger:        logger,
+			Logger:        zeLogger,
 			ReadFile:      readFile,
 		}
 
@@ -109,5 +121,8 @@ func TestTrigger(t *testing.T) {
 				t.Errorf("unexpected error for case \"%s\": %v", c.name, err)
 			}
 		}
+		if observedLogs.Len() != 0 && !hooks[0].ShowLogs {
+			t.Errorf("unexpected error for case \"%s\": Logs should not be created : %v", c.name, observedLogs.All())
+		}
 	}
 }

pkg/helmexec/context.go

@@ -0,0 +1,44 @@
+package helmexec
+
+import (
+	"os"
+	"path/filepath"
+)
+
+type HelmContext struct {
+	Tillerless      bool
+	TillerNamespace string
+	WorkerIndex     int
+}
+
+func (context *HelmContext) GetTillerlessArgs(helmBinary string) []string {
+	if context.Tillerless {
+		if context.TillerNamespace != "" {
+			return []string{"tiller", "run", context.TillerNamespace, "--", helmBinary}
+		} else {
+			return []string{"tiller", "run", "--", helmBinary}
+		}
+	} else {
+		return []string{}
+	}
+}
+
+func (context *HelmContext) getTillerlessEnv() map[string]string {
+	if context.Tillerless {
+		result := map[string]string{
+			"HELM_TILLER_SILENT": "true",
+			// Changing the TILLER port doesn't really work: https://github.com/helm/helm/issues/3159
+			// So this is not used for the moment.
+			// "HELM_TILLER_PORT":   strconv.Itoa(44134 + context.WorkerIndex),
+		}
+		if config := os.Getenv("KUBECONFIG"); config != "" {
+			absConfig, err := filepath.Abs(config)
+			if err == nil {
+				result["KUBECONFIG"] = absConfig
+			}
+		}
+		return result
+	} else {
+		return map[string]string{}
+	}
+}

pkg/helmexec/exec.go

@@ -1,11 +1,12 @@
 package helmexec
 
 import (
+	"fmt"
 	"io"
 	"io/ioutil"
 	"os"
+	"path/filepath"
 	"strings"
-
 	"sync"
 
 	"go.uber.org/zap"
@@ -48,7 +49,9 @@ func New(logger *zap.SugaredLogger, kubeContext string) *execer {
 		helmBinary:  command,
 		logger:      logger,
 		kubeContext: kubeContext,
-		runner:      &ShellRunner{},
+		runner: &ShellRunner{
+			logger: logger,
+		},
 	}
 }
 
@@ -70,54 +73,73 @@ func (helm *execer) AddRepo(name, repository, certfile, keyfile, username, passw
 		args = append(args, "--username", username, "--password", password)
 	}
 	helm.logger.Infof("Adding repo %v %v", name, repository)
-	out, err := helm.exec(args...)
-	helm.write(out)
+	out, err := helm.exec(args, map[string]string{})
+	helm.info(out)
 	return err
 }
 
 func (helm *execer) UpdateRepo() error {
 	helm.logger.Info("Updating repo")
-	out, err := helm.exec("repo", "update")
-	helm.write(out)
+	out, err := helm.exec([]string{"repo", "update"}, map[string]string{})
+	helm.info(out)
 	return err
 }
 
 func (helm *execer) UpdateDeps(chart string) error {
 	helm.logger.Infof("Updating dependency %v", chart)
-	out, err := helm.exec("dependency", "update", chart)
-	helm.write(out)
+	out, err := helm.exec([]string{"dependency", "update", chart}, map[string]string{})
+	helm.info(out)
 	return err
 }
 
 func (helm *execer) BuildDeps(chart string) error {
 	helm.logger.Infof("Building dependency %v", chart)
-	out, err := helm.exec("dependency", "build", chart)
-	helm.write(out)
+	out, err := helm.exec([]string{"dependency", "build", chart}, map[string]string{})
+	helm.info(out)
 	return err
 }
 
-func (helm *execer) SyncRelease(name, chart string, flags ...string) error {
+func (helm *execer) SyncRelease(context HelmContext, name, chart string, flags ...string) error {
 	helm.logger.Infof("Upgrading %v", chart)
-	out, err := helm.exec(append([]string{"upgrade", "--install", "--reset-values", name, chart}, flags...)...)
+	preArgs := context.GetTillerlessArgs(helm.helmBinary)
+	env := context.getTillerlessEnv()
+	out, err := helm.exec(append(append(preArgs, "upgrade", "--install", "--reset-values", name, chart), flags...), env)
 	helm.write(out)
 	return err
 }
 
-func (helm *execer) ReleaseStatus(name string) error {
+func (helm *execer) ReleaseStatus(context HelmContext, name string, flags ...string) error {
 	helm.logger.Infof("Getting status %v", name)
-	out, err := helm.exec(append([]string{"status", name})...)
+	preArgs := context.GetTillerlessArgs(helm.helmBinary)
+	env := context.getTillerlessEnv()
+	out, err := helm.exec(append(append(preArgs, "status", name), flags...), env)
 	helm.write(out)
 	return err
 }
 
-func (helm *execer) DecryptSecret(name string) (string, error) {
+func (helm *execer) List(context HelmContext, filter string, flags ...string) (string, error) {
+	helm.logger.Infof("Listing releases matching %v", filter)
+	preArgs := context.GetTillerlessArgs(helm.helmBinary)
+	env := context.getTillerlessEnv()
+	out, err := helm.exec(append(append(preArgs, "list", filter), flags...), env)
+	helm.write(out)
+	return string(out), err
+}
+
+func (helm *execer) DecryptSecret(context HelmContext, name string, flags ...string) (string, error) {
 	// Prevents https://github.com/roboll/helmfile/issues/258
 	helm.decryptionMutex.Lock()
 	defer helm.decryptionMutex.Unlock()
 
-	helm.logger.Infof("Decrypting secret %v", name)
-	out, err := helm.exec(append([]string{"secrets", "dec", name})...)
-	helm.write(out)
+	absPath, err := filepath.Abs(name)
+	if err != nil {
+		return "", err
+	}
+	helm.logger.Infof("Decrypting secret %v", absPath)
+	preArgs := context.GetTillerlessArgs(helm.helmBinary)
+	env := context.getTillerlessEnv()
+	out, err := helm.exec(append(append(preArgs, "secrets", "dec", absPath), flags...), env)
+	helm.info(out)
 	if err != nil {
 		return "", err
 	}
@@ -128,10 +150,16 @@ func (helm *execer) DecryptSecret(name string) (string, error) {
 	}
 	defer tmpFile.Close()
 
+	// HELM_SECRETS_DEC_SUFFIX is used by the helm-secrets plugin to define the output file
+	decSuffix := os.Getenv("HELM_SECRETS_DEC_SUFFIX")
+	if len(decSuffix) == 0 {
+		decSuffix = ".yaml.dec"
+	}
+	decFilename := strings.Replace(absPath, ".yaml", decSuffix, 1)
+
 	// os.Rename seems to results in "cross-device link` errors in some cases
 	// Instead of moving, copy it to the destination temp file as a work-around
 	// See https://github.com/roboll/helmfile/issues/251#issuecomment-417166296f
-	decFilename := name + ".dec"
 	decFile, err := os.Open(decFilename)
 	if err != nil {
 		return "", err
@@ -155,47 +183,72 @@ func (helm *execer) DecryptSecret(name string) (string, error) {
 }
 
 func (helm *execer) TemplateRelease(chart string, flags ...string) error {
-	out, err := helm.exec(append([]string{"template", chart}, flags...)...)
+	out, err := helm.exec(append([]string{"template", chart}, flags...), map[string]string{})
 	helm.write(out)
 	return err
 }
 
-func (helm *execer) DiffRelease(name, chart string, flags ...string) error {
+func (helm *execer) DiffRelease(context HelmContext, name, chart string, flags ...string) error {
 	helm.logger.Infof("Comparing %v %v", name, chart)
-	out, err := helm.exec(append([]string{"diff", "upgrade", "--allow-unreleased", name, chart}, flags...)...)
-	helm.write(out)
+	preArgs := context.GetTillerlessArgs(helm.helmBinary)
+	env := context.getTillerlessEnv()
+	out, err := helm.exec(append(append(preArgs, "diff", "upgrade", "--reset-values", "--allow-unreleased", name, chart), flags...), env)
+	// Do our best to write STDOUT only when diff existed
+	// Unfortunately, this works only when you run helmfile with `--detailed-exitcode`
+	detailedExitcodeEnabled := false
+	for _, f := range flags {
+		if strings.Contains(f, "detailed-exitcode") {
+			detailedExitcodeEnabled = true
+			break
+		}
+	}
+	if detailedExitcodeEnabled {
+		switch e := err.(type) {
+		case ExitError:
+			if e.ExitStatus() == 2 {
+				helm.write(out)
+				return err
+			}
+		}
+	} else {
+		helm.write(out)
+	}
 	return err
 }
 
 func (helm *execer) Lint(chart string, flags ...string) error {
 	helm.logger.Infof("Linting %v", chart)
-	out, err := helm.exec(append([]string{"lint", chart}, flags...)...)
+	out, err := helm.exec(append([]string{"lint", chart}, flags...), map[string]string{})
 	helm.write(out)
 	return err
 }
 
 func (helm *execer) Fetch(chart string, flags ...string) error {
 	helm.logger.Infof("Fetching %v", chart)
-	out, err := helm.exec(append([]string{"fetch", chart}, flags...)...)
-	helm.write(out)
+	out, err := helm.exec(append([]string{"fetch", chart}, flags...), map[string]string{})
+	helm.info(out)
 	return err
 }
 
-func (helm *execer) DeleteRelease(name string, flags ...string) error {
+func (helm *execer) DeleteRelease(context HelmContext, name string, flags ...string) error {
 	helm.logger.Infof("Deleting %v", name)
-	out, err := helm.exec(append([]string{"delete", name}, flags...)...)
+	preArgs := context.GetTillerlessArgs(helm.helmBinary)
+	env := context.getTillerlessEnv()
+	out, err := helm.exec(append(append(preArgs, "delete", name), flags...), env)
 	helm.write(out)
 	return err
 }
 
-func (helm *execer) TestRelease(name string, flags ...string) error {
+func (helm *execer) TestRelease(context HelmContext, name string, flags ...string) error {
 	helm.logger.Infof("Testing %v", name)
-	out, err := helm.exec(append([]string{"test", name}, flags...)...)
+	preArgs := context.GetTillerlessArgs(helm.helmBinary)
+	env := context.getTillerlessEnv()
+	out, err := helm.exec(append(append(preArgs, "test", name), flags...), env)
 	helm.write(out)
 	return err
 }
 
-func (helm *execer) exec(args ...string) ([]byte, error) {
+func (helm *execer) exec(args []string, env map[string]string) ([]byte, error) {
 	cmdargs := args
 	if len(helm.extra) > 0 {
 		cmdargs = append(cmdargs, helm.extra...)
@@ -203,12 +256,21 @@ func (helm *execer) exec(args ...string) ([]byte, error) {
 	if helm.kubeContext != "" {
 		cmdargs = append(cmdargs, "--kube-context", helm.kubeContext)
 	}
-	helm.logger.Debugf("exec: %s %s", helm.helmBinary, strings.Join(cmdargs, " "))
-	return helm.runner.Execute(helm.helmBinary, cmdargs)
+	cmd := fmt.Sprintf("exec: %s %s", helm.helmBinary, strings.Join(cmdargs, " "))
+	helm.logger.Debug(cmd)
+	bytes, err := helm.runner.Execute(helm.helmBinary, cmdargs, env)
+	helm.logger.Debugf("%s: %s", cmd, bytes)
+	return bytes, err
 }
 
-func (helm *execer) write(out []byte) {
+func (helm *execer) info(out []byte) {
 	if len(out) > 0 {
 		helm.logger.Infof("%s", out)
 	}
 }
+
+func (helm *execer) write(out []byte) {
+	if len(out) > 0 {
+		fmt.Printf("%s\n", out)
+	}
+}

pkg/helmexec/exec_test.go

@@ -2,7 +2,10 @@ package helmexec
 
 import (
 	"bytes"
+	"fmt"
 	"os"
+	"path"
+	"path/filepath"
 	"reflect"
 	"testing"
 
@@ -16,7 +19,7 @@ type mockRunner struct {
 	err    error
 }
 
-func (mock *mockRunner) Execute(cmd string, args []string) ([]byte, error) {
+func (mock *mockRunner) Execute(cmd string, args []string, env map[string]string) ([]byte, error) {
 	return []byte{}, nil
 }
 
@@ -77,6 +80,7 @@ func Test_AddRepo(t *testing.T) {
 	helm.AddRepo("myRepo", "https://repo.example.com/", "cert.pem", "key.pem", "", "")
 	expected := `Adding repo myRepo https://repo.example.com/
 exec: helm repo add myRepo https://repo.example.com/ --cert-file cert.pem --key-file key.pem --kube-context dev
+exec: helm repo add myRepo https://repo.example.com/ --cert-file cert.pem --key-file key.pem --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -86,6 +90,7 @@ exec: helm repo add myRepo https://repo.example.com/ --cert-file cert.pem --key-
 	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "", "")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm repo add myRepo https://repo.example.com/ --kube-context dev
+exec: helm repo add myRepo https://repo.example.com/ --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -95,6 +100,7 @@ exec: helm repo add myRepo https://repo.example.com/ --kube-context dev
 	helm.AddRepo("myRepo", "https://repo.example.com/", "", "", "example_user", "example_password")
 	expected = `Adding repo myRepo https://repo.example.com/
 exec: helm repo add myRepo https://repo.example.com/ --username example_user --password example_password --kube-context dev
+exec: helm repo add myRepo https://repo.example.com/ --username example_user --password example_password --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -108,6 +114,7 @@ func Test_UpdateRepo(t *testing.T) {
 	helm.UpdateRepo()
 	expected := `Updating repo
 exec: helm repo update --kube-context dev
+exec: helm repo update --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.UpdateRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -118,18 +125,35 @@ func Test_SyncRelease(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.SyncRelease("release", "chart", "--timeout 10", "--wait")
+	helm.SyncRelease(HelmContext{}, "release", "chart", "--timeout 10", "--wait")
 	expected := `Upgrading chart
 exec: helm upgrade --install --reset-values release chart --timeout 10 --wait --kube-context dev
+exec: helm upgrade --install --reset-values release chart --timeout 10 --wait --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.SyncRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
 
 	buffer.Reset()
-	helm.SyncRelease("release", "chart")
+	helm.SyncRelease(HelmContext{}, "release", "chart")
 	expected = `Upgrading chart
 exec: helm upgrade --install --reset-values release chart --kube-context dev
+exec: helm upgrade --install --reset-values release chart --kube-context dev: 
+`
+	if buffer.String() != expected {
+		t.Errorf("helmexec.SyncRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
+	}
+}
+
+func Test_SyncReleaseTillerless(t *testing.T) {
+	var buffer bytes.Buffer
+	logger := NewLogger(&buffer, "debug")
+	helm := MockExecer(logger, "dev")
+	helm.SyncRelease(HelmContext{Tillerless: true, TillerNamespace: "foo"}, "release", "chart",
+		"--timeout 10", "--wait")
+	expected := `Upgrading chart
+exec: helm tiller run foo -- helm upgrade --install --reset-values release chart --timeout 10 --wait --kube-context dev
+exec: helm tiller run foo -- helm upgrade --install --reset-values release chart --timeout 10 --wait --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.SyncRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -143,6 +167,7 @@ func Test_UpdateDeps(t *testing.T) {
 	helm.UpdateDeps("./chart/foo")
 	expected := `Updating dependency ./chart/foo
 exec: helm dependency update ./chart/foo --kube-context dev
+exec: helm dependency update ./chart/foo --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.UpdateDeps()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -153,6 +178,7 @@ exec: helm dependency update ./chart/foo --kube-context dev
 	helm.UpdateDeps("./chart/foo")
 	expected = `Updating dependency ./chart/foo
 exec: helm dependency update ./chart/foo --verify --kube-context dev
+exec: helm dependency update ./chart/foo --verify --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.AddRepo()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -166,6 +192,7 @@ func Test_BuildDeps(t *testing.T) {
 	helm.BuildDeps("./chart/foo")
 	expected := `Building dependency ./chart/foo
 exec: helm dependency build ./chart/foo --kube-context dev
+exec: helm dependency build ./chart/foo --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.BuildDeps()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -176,6 +203,7 @@ exec: helm dependency build ./chart/foo --kube-context dev
 	helm.BuildDeps("./chart/foo")
 	expected = `Building dependency ./chart/foo
 exec: helm dependency build ./chart/foo --verify --kube-context dev
+exec: helm dependency build ./chart/foo --verify --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.BuildDeps()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -186,10 +214,15 @@ func Test_DecryptSecret(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.DecryptSecret("secretName")
-	expected := `Decrypting secret secretName
-exec: helm secrets dec secretName --kube-context dev
-`
+	helm.DecryptSecret(HelmContext{}, "secretName")
+	cwd, err := filepath.Abs(".")
+	if err != nil {
+		t.Errorf("Error: %v", err)
+	}
+	expected := fmt.Sprintf(`Decrypting secret %s/secretName
+exec: helm secrets dec %s/secretName --kube-context dev
+exec: helm secrets dec %s/secretName --kube-context dev: 
+`, cwd, cwd, cwd)
 	if buffer.String() != expected {
 		t.Errorf("helmexec.DecryptSecret()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
@@ -199,18 +232,34 @@ func Test_DiffRelease(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.DiffRelease("release", "chart", "--timeout 10", "--wait")
+	helm.DiffRelease(HelmContext{}, "release", "chart", "--timeout 10", "--wait")
 	expected := `Comparing release chart
-exec: helm diff upgrade --allow-unreleased release chart --timeout 10 --wait --kube-context dev
+exec: helm diff upgrade --reset-values --allow-unreleased release chart --timeout 10 --wait --kube-context dev
+exec: helm diff upgrade --reset-values --allow-unreleased release chart --timeout 10 --wait --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.DiffRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
 
 	buffer.Reset()
-	helm.DiffRelease("release", "chart")
+	helm.DiffRelease(HelmContext{}, "release", "chart")
 	expected = `Comparing release chart
-exec: helm diff upgrade --allow-unreleased release chart --kube-context dev
+exec: helm diff upgrade --reset-values --allow-unreleased release chart --kube-context dev
+exec: helm diff upgrade --reset-values --allow-unreleased release chart --kube-context dev: 
+`
+	if buffer.String() != expected {
+		t.Errorf("helmexec.DiffRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
+	}
+}
+
+func Test_DiffReleaseTillerless(t *testing.T) {
+	var buffer bytes.Buffer
+	logger := NewLogger(&buffer, "debug")
+	helm := MockExecer(logger, "dev")
+	helm.DiffRelease(HelmContext{Tillerless: true}, "release", "chart", "--timeout 10", "--wait")
+	expected := `Comparing release chart
+exec: helm tiller run -- helm diff upgrade --reset-values --allow-unreleased release chart --timeout 10 --wait --kube-context dev
+exec: helm tiller run -- helm diff upgrade --reset-values --allow-unreleased release chart --timeout 10 --wait --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.DiffRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -221,9 +270,10 @@ func Test_DeleteRelease(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.DeleteRelease("release")
+	helm.DeleteRelease(HelmContext{}, "release")
 	expected := `Deleting release
 exec: helm delete release --kube-context dev
+exec: helm delete release --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.DeleteRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -233,9 +283,10 @@ func Test_DeleteRelease_Flags(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.DeleteRelease("release", "--purge")
+	helm.DeleteRelease(HelmContext{}, "release", "--purge")
 	expected := `Deleting release
 exec: helm delete release --purge --kube-context dev
+exec: helm delete release --purge --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.DeleteRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -246,9 +297,10 @@ func Test_TestRelease(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.TestRelease("release")
+	helm.TestRelease(HelmContext{}, "release")
 	expected := `Testing release
 exec: helm test release --kube-context dev
+exec: helm test release --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.TestRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -258,9 +310,10 @@ func Test_TestRelease_Flags(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.TestRelease("release", "--cleanup", "--timeout", "60")
+	helm.TestRelease(HelmContext{}, "release", "--cleanup", "--timeout", "60")
 	expected := `Testing release
 exec: helm test release --cleanup --timeout 60 --kube-context dev
+exec: helm test release --cleanup --timeout 60 --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.TestRelease()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -271,9 +324,10 @@ func Test_ReleaseStatus(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "dev")
-	helm.ReleaseStatus("myRelease")
+	helm.ReleaseStatus(HelmContext{}, "myRelease")
 	expected := `Getting status myRelease
 exec: helm status myRelease --kube-context dev
+exec: helm status myRelease --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.ReleaseStatus()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -284,37 +338,46 @@ func Test_exec(t *testing.T) {
 	var buffer bytes.Buffer
 	logger := NewLogger(&buffer, "debug")
 	helm := MockExecer(logger, "")
-	helm.exec("version")
-	expected := "exec: helm version\n"
+	env := map[string]string{}
+	helm.exec([]string{"version"}, env)
+	expected := `exec: helm version
+exec: helm version: 
+`
 	if buffer.String() != expected {
 		t.Errorf("helmexec.exec()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
 
 	helm = MockExecer(logger, "dev")
-	ret, _ := helm.exec("diff")
+	ret, _ := helm.exec([]string{"diff"}, env)
 	if len(ret) != 0 {
 		t.Error("helmexec.exec() - expected empty return value")
 	}
 
 	buffer.Reset()
 	helm = MockExecer(logger, "dev")
-	helm.exec("diff", "release", "chart", "--timeout 10", "--wait")
-	expected = "exec: helm diff release chart --timeout 10 --wait --kube-context dev\n"
+	helm.exec([]string{"diff", "release", "chart", "--timeout 10", "--wait"}, env)
+	expected = `exec: helm diff release chart --timeout 10 --wait --kube-context dev
+exec: helm diff release chart --timeout 10 --wait --kube-context dev: 
+`
 	if buffer.String() != expected {
 		t.Errorf("helmexec.exec()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
 
 	buffer.Reset()
-	helm.exec("version")
-	expected = "exec: helm version --kube-context dev\n"
+	helm.exec([]string{"version"}, env)
+	expected = `exec: helm version --kube-context dev
+exec: helm version --kube-context dev: 
+`
 	if buffer.String() != expected {
 		t.Errorf("helmexec.exec()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
 
 	buffer.Reset()
 	helm.SetExtraArgs("foo")
-	helm.exec("version")
-	expected = "exec: helm version foo --kube-context dev\n"
+	helm.exec([]string{"version"}, env)
+	expected = `exec: helm version foo --kube-context dev
+exec: helm version foo --kube-context dev: 
+`
 	if buffer.String() != expected {
 		t.Errorf("helmexec.exec()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
@@ -322,8 +385,10 @@ func Test_exec(t *testing.T) {
 	buffer.Reset()
 	helm = MockExecer(logger, "")
 	helm.SetHelmBinary("overwritten")
-	helm.exec("version")
-	expected = "exec: overwritten version\n"
+	helm.exec([]string{"version"}, env)
+	expected = `exec: overwritten version
+exec: overwritten version: 
+`
 	if buffer.String() != expected {
 		t.Errorf("helmexec.exec()\nactual = %v\nexpect = %v", buffer.String(), expected)
 	}
@@ -336,6 +401,7 @@ func Test_Lint(t *testing.T) {
 	helm.Lint("path/to/chart", "--values", "file.yml")
 	expected := `Linting path/to/chart
 exec: helm lint path/to/chart --values file.yml --kube-context dev
+exec: helm lint path/to/chart --values file.yml --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.Lint()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -349,6 +415,7 @@ func Test_Fetch(t *testing.T) {
 	helm.Fetch("chart", "--version", "1.2.3", "--untar", "--untardir", "/tmp/dir")
 	expected := `Fetching chart
 exec: helm fetch chart --version 1.2.3 --untar --untardir /tmp/dir --kube-context dev
+exec: helm fetch chart --version 1.2.3 --untar --untardir /tmp/dir --kube-context dev: 
 `
 	if buffer.String() != expected {
 		t.Errorf("helmexec.Lint()\nactual = %v\nexpect = %v", buffer.String(), expected)
@@ -358,6 +425,7 @@ exec: helm fetch chart --version 1.2.3 --untar --untardir /tmp/dir --kube-contex
 var logLevelTests = map[string]string{
 	"debug": `Adding repo myRepo https://repo.example.com/
 exec: helm repo add myRepo https://repo.example.com/ --username example_user --password example_password
+exec: helm repo add myRepo https://repo.example.com/ --username example_user --password example_password: 
 `,
 	"info": `Adding repo myRepo https://repo.example.com/
 `,
@@ -376,3 +444,37 @@ func Test_LogLevels(t *testing.T) {
 		}
 	}
 }
+
+func Test_getTillerlessEnv(t *testing.T) {
+	context := HelmContext{Tillerless: true, TillerNamespace: "foo", WorkerIndex: 1}
+
+	os.Unsetenv("KUBECONFIG")
+	actual := context.getTillerlessEnv()
+	if val, found := actual["HELM_TILLER_SILENT"]; !found || val != "true" {
+		t.Errorf("getTillerlessEnv() HELM_TILLER_SILENT\nactual = %s\nexpect = true", val)
+	}
+	// This feature is disabled until it is fixed in helm
+	/*if val, found := actual["HELM_TILLER_PORT"]; !found || val != "44135" {
+		t.Errorf("getTillerlessEnv() HELM_TILLER_PORT\nactual = %s\nexpect = 44135", val)
+	}*/
+	if val, found := actual["KUBECONFIG"]; found {
+		t.Errorf("getTillerlessEnv() KUBECONFIG\nactual = %s\nexpect = nil", val)
+	}
+
+	os.Setenv("KUBECONFIG", "toto")
+	actual = context.getTillerlessEnv()
+	cwd, _ := os.Getwd()
+	expected := path.Join(cwd, "toto")
+	if val, found := actual["KUBECONFIG"]; !found || val != expected {
+		t.Errorf("getTillerlessEnv() KUBECONFIG\nactual = %s\nexpect = %s", val, expected)
+	}
+	os.Unsetenv("KUBECONFIG")
+}
+
+func Test_mergeEnv(t *testing.T) {
+	actual := env2map(mergeEnv([]string{"A=1", "B=c=d", "E=2"}, map[string]string{"B": "3", "F": "4"}))
+	expected := map[string]string{"A": "1", "B": "3", "E": "2", "F": "4"}
+	if !reflect.DeepEqual(actual, expected) {
+		t.Errorf("mergeEnv()\nactual = %v\nexpect = %v", actual, expected)
+	}
+}

pkg/helmexec/exit_error.go

@@ -0,0 +1,36 @@
+package helmexec
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+)
+
+func newExitError(helmCmdPath string, exitStatus int, errorMessage string) ExitError {
+	return ExitError{
+		msg:        fmt.Sprintf("%s exited with status %d:\n%s", filepath.Base(helmCmdPath), exitStatus, indent(strings.TrimSpace(errorMessage))),
+		exitStatus: exitStatus,
+	}
+}
+
+func indent(text string) string {
+	lines := strings.Split(text, "\n")
+	for i := range lines {
+		lines[i] = "  " + lines[i]
+	}
+	return strings.Join(lines, "\n")
+}
+
+// ExitError is created whenever your shell command exits with a non-zero exit status
+type ExitError struct {
+	msg        string
+	exitStatus int
+}
+
+func (e ExitError) Error() string {
+	return e.msg
+}
+
+func (e ExitError) ExitStatus() int {
+	return e.exitStatus
+}

pkg/helmexec/helmexec.go

@@ -0,0 +1,26 @@
+package helmexec
+
+// Interface for executing helm commands
+type Interface interface {
+	SetExtraArgs(args ...string)
+	SetHelmBinary(bin string)
+
+	AddRepo(name, repository, certfile, keyfile, username, password string) error
+	UpdateRepo() error
+	BuildDeps(chart string) error
+	UpdateDeps(chart string) error
+	SyncRelease(context HelmContext, name, chart string, flags ...string) error
+	DiffRelease(context HelmContext, name, chart string, flags ...string) error
+	TemplateRelease(chart string, flags ...string) error
+	Fetch(chart string, flags ...string) error
+	Lint(chart string, flags ...string) error
+	ReleaseStatus(context HelmContext, name string, flags ...string) error
+	DeleteRelease(context HelmContext, name string, flags ...string) error
+	TestRelease(context HelmContext, name string, flags ...string) error
+	List(context HelmContext, filter string, flags ...string) (string, error)
+	DecryptSecret(context HelmContext, name string, flags ...string) (string, error)
+}
+
+type DependencyUpdater interface {
+	UpdateDeps(chart string) error
+}

pkg/helmexec/runner.go

@@ -0,0 +1,99 @@
+package helmexec
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"go.uber.org/zap"
+	"os"
+	"os/exec"
+	"strings"
+	"syscall"
+)
+
+const (
+	tmpPrefix = "helmfile-"
+	tmpSuffix = "-exec"
+)
+
+// Runner interface for shell commands
+type Runner interface {
+	Execute(cmd string, args []string, env map[string]string) ([]byte, error)
+}
+
+// ShellRunner implemention for shell commands
+type ShellRunner struct {
+	Dir string
+
+	logger *zap.SugaredLogger
+}
+
+// Execute a shell command
+func (shell ShellRunner) Execute(cmd string, args []string, env map[string]string) ([]byte, error) {
+	preparedCmd := exec.Command(cmd, args...)
+	preparedCmd.Dir = shell.Dir
+	preparedCmd.Env = mergeEnv(os.Environ(), env)
+	return combinedOutput(preparedCmd, shell.logger)
+}
+
+func combinedOutput(c *exec.Cmd, logger *zap.SugaredLogger) ([]byte, error) {
+	if c.Stdout != nil {
+		return nil, errors.New("exec: Stdout already set")
+	}
+	if c.Stderr != nil {
+		return nil, errors.New("exec: Stderr already set")
+	}
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+	c.Stdout = &stdout
+	c.Stderr = &stderr
+	err := c.Run()
+
+	o := stdout.Bytes()
+	e := stderr.Bytes()
+
+	if err != nil {
+		// TrimSpace is necessary, because otherwise helmfile prints the redundant new-lines after each error like:
+		//
+		//   err: release "envoy2" in "helmfile.yaml" failed: exit status 1: Error: could not find a ready tiller pod
+		//   <redundant new line!>
+		//   err: release "envoy" in "helmfile.yaml" failed: exit status 1: Error: could not find a ready tiller pod
+		switch ee := err.(type) {
+		case *exec.ExitError:
+			// Propagate any non-zero exit status from the external command, rather than throwing it away,
+			// so that helmfile could return its own exit code accordingly
+			waitStatus := ee.Sys().(syscall.WaitStatus)
+			exitStatus := waitStatus.ExitStatus()
+			err = newExitError(c.Path, exitStatus, string(e))
+		default:
+			panic(fmt.Sprintf("unexpected error: %v", err))
+		}
+	}
+
+	return o, err
+}
+
+func mergeEnv(orig []string, new map[string]string) []string {
+	wanted := env2map(orig)
+	for k, v := range new {
+		wanted[k] = v
+	}
+	return map2env(wanted)
+}
+
+func map2env(wanted map[string]string) []string {
+	result := []string{}
+	for k, v := range wanted {
+		result = append(result, k+"="+v)
+	}
+	return result
+}
+
+func env2map(env []string) map[string]string {
+	wanted := map[string]string{}
+	for _, cur := range env {
+		pair := strings.SplitN(cur, "=", 2)
+		wanted[pair[0]] = pair[1]
+	}
+	return wanted
+}

pkg/maputil/maputil.go

@@ -0,0 +1,86 @@
+package maputil
+
+import "fmt"
+
+func CastKeysToStrings(s interface{}) (map[string]interface{}, error) {
+	new := map[string]interface{}{}
+	switch src := s.(type) {
+	case map[interface{}]interface{}:
+		for k, v := range src {
+			var str_k string
+			switch typed_k := k.(type) {
+			case string:
+				str_k = typed_k
+			default:
+				return nil, fmt.Errorf("unexpected type of key in map: expected string, got %T: value=%v, map=%v", typed_k, typed_k, src)
+			}
+
+			casted_v, err := recursivelyStringifyMapKey(v)
+			if err != nil {
+				return nil, err
+			}
+
+			new[str_k] = casted_v
+		}
+	case map[string]interface{}:
+		for k, v := range src {
+			casted_v, err := recursivelyStringifyMapKey(v)
+			if err != nil {
+				return nil, err
+			}
+
+			new[k] = casted_v
+		}
+	}
+	return new, nil
+}
+
+func recursivelyStringifyMapKey(v interface{}) (interface{}, error) {
+	var casted_v interface{}
+	switch typed_v := v.(type) {
+	case map[interface{}]interface{}, map[string]interface{}:
+		tmp, err := CastKeysToStrings(typed_v)
+		if err != nil {
+			return nil, err
+		}
+		casted_v = tmp
+	case []interface{}:
+		a := []interface{}{}
+		for i := range typed_v {
+			res, err := recursivelyStringifyMapKey(typed_v[i])
+			if err != nil {
+				return nil, err
+			}
+			a = append(a, res)
+		}
+		casted_v = a
+	default:
+		casted_v = typed_v
+	}
+	return casted_v, nil
+}
+
+func Set(m map[string]interface{}, key []string, value string) map[string]interface{} {
+	if len(key) == 0 {
+		panic(fmt.Errorf("bug: unexpected length of key: %d", len(key)))
+	}
+
+	k := key[0]
+
+	if len(key) == 1 {
+		m[k] = value
+		return m
+	}
+
+	remain := key[1:]
+
+	nested, ok := m[k]
+	if !ok {
+		new_m := map[string]interface{}{}
+		nested = Set(new_m, remain, value)
+	}
+
+	m[k] = nested
+
+	return m
+}

pkg/maputil/maputil_test.go

@@ -0,0 +1,61 @@
+package maputil
+
+import "testing"
+
+func TestMapUtil_StrKeys(t *testing.T) {
+	m := map[string]interface{}{
+		"a": []interface{}{
+			map[string]interface{}{
+				"b": []interface{}{
+					map[string]interface{}{
+						"c": "C",
+					},
+				},
+			},
+		},
+	}
+
+	r, err := CastKeysToStrings(m)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	a := r["a"].([]interface{})
+	a0 := a[0].(map[string]interface{})
+	b := a0["b"].([]interface{})
+	b0 := b[0].(map[string]interface{})
+	c := b0["c"]
+
+	if c != "C" {
+		t.Errorf("unexpected c: expected=C, got=%s", c)
+	}
+}
+
+func TestMapUtil_IFKeys(t *testing.T) {
+	m := map[interface{}]interface{}{
+		"a": []interface{}{
+			map[interface{}]interface{}{
+				"b": []interface{}{
+					map[interface{}]interface{}{
+						"c": "C",
+					},
+				},
+			},
+		},
+	}
+
+	r, err := CastKeysToStrings(m)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	a := r["a"].([]interface{})
+	a0 := a[0].(map[string]interface{})
+	b := a0["b"].([]interface{})
+	b0 := b[0].(map[string]interface{})
+	c := b0["c"]
+
+	if c != "C" {
+		t.Errorf("unexpected c: expected=C, got=%s", c)
+	}
+}

pkg/remote/remote.go

@@ -0,0 +1,254 @@
+package remote
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/hashicorp/go-getter"
+	"github.com/hashicorp/go-getter/helper/url"
+	"go.uber.org/zap"
+	"gopkg.in/yaml.v2"
+	"path/filepath"
+	"strings"
+)
+
+const DefaultCacheDir = ".helmfile/cache"
+
+type Remote struct {
+	Logger *zap.SugaredLogger
+
+	// Home is the home directory for helmfile. Usually this points to $HOME of the user running helmfile.
+	// Helmfile saves fetched remote files into .helmfile/cache under home
+	Home string
+
+	// Getter is the underlying implementation of getter used for fetching remote files
+	Getter Getter
+
+	// ReadFile is the implementation of the file reader that reads a local file from the specified path.
+	// Inject any implementation of your choice, like an im-memory impl for testing, ioutil.ReadFile for the real-world use.
+	ReadFile   func(string) ([]byte, error)
+	DirExists  func(string) bool
+	FileExists func(string) bool
+}
+
+func (r *Remote) Unmarshal(src string, dst interface{}) error {
+	bytes, err := r.GetBytes(src)
+	if err != nil {
+		return err
+	}
+
+	strs := strings.Split(src, "/")
+	file := strs[len(strs)-1]
+	ext := filepath.Ext(file)
+
+	{
+		r.Logger.Debugf("unmarshalling %s", string(bytes))
+
+		var err error
+		switch ext {
+		case "json":
+			err = json.Unmarshal(bytes, dst)
+		default:
+			err = yaml.Unmarshal(bytes, dst)
+		}
+
+		r.Logger.Debugf("unmarshalled to %v", dst)
+
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (r *Remote) GetBytes(goGetterSrc string) ([]byte, error) {
+	f, err := r.Fetch(goGetterSrc)
+	if err != nil {
+		return nil, err
+	}
+
+	bytes, err := r.ReadFile(f)
+	if err != nil {
+		return nil, fmt.Errorf("read file: %v", err)
+	}
+
+	return bytes, nil
+}
+
+// Locate takes an URL to a remote file or a path to a local file.
+// If the argument was an URL, it fetches the remote directory contained within the URL,
+// and returns the path to the file in the fetched directory
+func (r *Remote) Locate(urlOrPath string) (string, error) {
+	if r.FileExists(urlOrPath) || r.DirExists(urlOrPath) {
+		return urlOrPath, nil
+	}
+	fetched, err := r.Fetch(urlOrPath)
+	if err != nil {
+		switch err.(type) {
+		case InvalidURLError:
+			return urlOrPath, nil
+		}
+		return "", err
+	}
+	return fetched, nil
+}
+
+type InvalidURLError struct {
+	err string
+}
+
+func (e InvalidURLError) Error() string {
+	return e.err
+}
+
+type Source struct {
+	Getter, Scheme, User, Host, Dir, File, RawQuery string
+}
+
+func IsRemote(goGetterSrc string) bool {
+	if _, err := Parse(goGetterSrc); err != nil {
+		return false
+	}
+	return true
+}
+
+func Parse(goGetterSrc string) (*Source, error) {
+	items := strings.Split(goGetterSrc, "::")
+	var getter string
+	switch len(items) {
+	case 2:
+		getter = items[0]
+		goGetterSrc = items[1]
+	}
+
+	u, err := url.Parse(goGetterSrc)
+	if err != nil {
+		return nil, InvalidURLError{err: fmt.Sprintf("parse url: %v", err)}
+	}
+
+	if u.Scheme == "" {
+		return nil, InvalidURLError{err: fmt.Sprintf("parse url: missing scheme - probably this is a local file path? %s", goGetterSrc)}
+	}
+
+	pathComponents := strings.Split(u.Path, "@")
+	if len(pathComponents) != 2 {
+		return nil, fmt.Errorf("invalid src format: it must be `[<getter>::]<scheme>://<host>/<path/to/dir>@<path/to/file>?key1=val1&key2=val2: got %s", goGetterSrc)
+	}
+
+	return &Source{
+		Getter:   getter,
+		User:     u.User.String(),
+		Scheme:   u.Scheme,
+		Host:     u.Host,
+		Dir:      pathComponents[0],
+		File:     pathComponents[1],
+		RawQuery: u.RawQuery,
+	}, nil
+}
+
+func (r *Remote) Fetch(goGetterSrc string) (string, error) {
+	u, err := Parse(goGetterSrc)
+	if err != nil {
+		return "", err
+	}
+
+	srcDir := fmt.Sprintf("%s://%s%s", u.Scheme, u.Host, u.Dir)
+	file := u.File
+
+	r.Logger.Debugf("getter: %s", u.Getter)
+	r.Logger.Debugf("scheme: %s", u.Scheme)
+	r.Logger.Debugf("user: %s", u.User)
+	r.Logger.Debugf("host: %s", u.Host)
+	r.Logger.Debugf("dir: %s", u.Dir)
+	r.Logger.Debugf("file: %s", u.File)
+
+	// This should be shared across variant commands, so that they can share cache for the shared imports
+	cacheBaseDir := DefaultCacheDir
+
+	query := u.RawQuery
+
+	var cacheKey string
+	replacer := strings.NewReplacer(":", "", "//", "_", "/", "_", ".", "_")
+	dirKey := replacer.Replace(srcDir)
+	if len(query) > 0 {
+		paramsKey := strings.Replace(query, "&", "_", -1)
+		cacheKey = fmt.Sprintf("%s.%s", dirKey, paramsKey)
+	} else {
+		cacheKey = dirKey
+	}
+
+	cached := false
+
+	getterDst := filepath.Join(cacheBaseDir, cacheKey)
+
+	cacheDirPath := filepath.Join(r.Home, getterDst)
+
+	r.Logger.Debugf("home: %s", r.Home)
+	r.Logger.Debugf("getter dest: %s", getterDst)
+	r.Logger.Debugf("cached dir: %s", cacheDirPath)
+
+	{
+		if r.FileExists(cacheDirPath) {
+			return "", fmt.Errorf("%s is not directory. please remove it so that variant could use it for dependency caching", getterDst)
+		}
+
+		if r.DirExists(cacheDirPath) {
+			cached = true
+		}
+	}
+
+	if !cached {
+		var getterSrc string
+		if u.User != "" {
+			getterSrc = fmt.Sprintf("%s://%s@%s%s", u.Scheme, u.User, u.Host, u.Dir)
+		} else {
+			getterSrc = fmt.Sprintf("%s://%s%s", u.Scheme, u.Host, u.Dir)
+		}
+
+		if len(query) > 0 {
+			getterSrc = strings.Join([]string{getterSrc, query}, "?")
+		}
+
+		if u.Getter != "" {
+			getterSrc = u.Getter + "::" + getterSrc
+		}
+
+		r.Logger.Debugf("downloading %s to %s", getterSrc, getterDst)
+
+		if err := r.Getter.Get(r.Home, getterSrc, getterDst); err != nil {
+			return "", err
+		}
+	}
+
+	return filepath.Join(cacheDirPath, file), nil
+}
+
+type Getter interface {
+	Get(wd, src, dst string) error
+}
+
+type GoGetter struct {
+	Logger *zap.SugaredLogger
+}
+
+func (g *GoGetter) Get(wd, src, dst string) error {
+	ctx := context.Background()
+
+	get := &getter.Client{
+		Ctx:     ctx,
+		Src:     src,
+		Dst:     dst,
+		Pwd:     wd,
+		Mode:    getter.ClientModeDir,
+		Options: []getter.ClientOption{},
+	}
+
+	g.Logger.Debugf("client: %+v", *get)
+
+	if err := get.Get(); err != nil {
+		return fmt.Errorf("get: %v", err)
+	}
+
+	return nil
+}

pkg/remote/remote_test.go

@@ -0,0 +1,165 @@
+package remote
+
+import (
+	"fmt"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"github.com/roboll/helmfile/pkg/testhelper"
+	"os"
+	"testing"
+)
+
+func TestRemote_HttpsGitHub(t *testing.T) {
+	cleanfs := map[string]string{
+		"path/to/home": "",
+	}
+	cachefs := map[string]string{
+		"path/to/home/.helmfile/cache/https_github_com_cloudposse_helmfiles_git.ref=0.40.0/releases/kiam.yaml": "foo: bar",
+	}
+
+	type testcase struct {
+		files          map[string]string
+		expectCacheHit bool
+	}
+
+	testcases := []testcase{
+		{files: cleanfs, expectCacheHit: false},
+		{files: cachefs, expectCacheHit: true},
+	}
+
+	for i := range testcases {
+		testcase := testcases[i]
+
+		t.Run(fmt.Sprintf("case %d", i), func(t *testing.T) {
+			testfs := testhelper.NewTestFs(testcase.files)
+
+			hit := true
+
+			get := func(wd, src, dst string) error {
+				if wd != "path/to/home" {
+					return fmt.Errorf("unexpected wd: %s", wd)
+				}
+				if src != "git::https://github.com/cloudposse/helmfiles.git?ref=0.40.0" {
+					return fmt.Errorf("unexpected src: %s", src)
+				}
+
+				hit = false
+
+				return nil
+			}
+
+			getter := &testGetter{
+				get: get,
+			}
+			remote := &Remote{
+				Logger:     helmexec.NewLogger(os.Stderr, "debug"),
+				Home:       "path/to/home",
+				Getter:     getter,
+				ReadFile:   testfs.ReadFile,
+				FileExists: testfs.FileExistsAt,
+				DirExists:  testfs.DirectoryExistsAt,
+			}
+
+			// FYI, go-getter in the `dir` mode accepts URL like the below. So helmfile expects URLs similar to it:
+			//   go-getter -mode dir git::https://github.com/cloudposse/helmfiles.git?ref=0.40.0 gettertest1/b
+
+			// We use `@` to separate dir and the file path. This is a good idea borrowed from helm-git:
+			//   https://github.com/aslafy-z/helm-git
+
+			url := "git::https://github.com/cloudposse/helmfiles.git@releases/kiam.yaml?ref=0.40.0"
+			file, err := remote.Locate(url)
+			if err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+
+			if file != "path/to/home/.helmfile/cache/https_github_com_cloudposse_helmfiles_git.ref=0.40.0/releases/kiam.yaml" {
+				t.Errorf("unexpected file located: %s", file)
+			}
+
+			if testcase.expectCacheHit && !hit {
+				t.Errorf("unexpected result: unexpected cache miss")
+			}
+			if !testcase.expectCacheHit && hit {
+				t.Errorf("unexpected result: unexpected cache hit")
+			}
+		})
+	}
+}
+
+func TestRemote_SShGitHub(t *testing.T) {
+	cleanfs := map[string]string{
+		"path/to/home": "",
+	}
+	cachefs := map[string]string{
+		"path/to/home/.helmfile/cache/ssh_github_com_cloudposse_helmfiles_git.ref=0.40.0/releases/kiam.yaml": "foo: bar",
+	}
+
+	type testcase struct {
+		files          map[string]string
+		expectCacheHit bool
+	}
+
+	testcases := []testcase{
+		{files: cleanfs, expectCacheHit: false},
+		{files: cachefs, expectCacheHit: true},
+	}
+
+	for i := range testcases {
+		testcase := testcases[i]
+
+		t.Run(fmt.Sprintf("case %d", i), func(t *testing.T) {
+			testfs := testhelper.NewTestFs(testcase.files)
+
+			hit := true
+
+			get := func(wd, src, dst string) error {
+				if wd != "path/to/home" {
+					return fmt.Errorf("unexpected wd: %s", wd)
+				}
+				if src != "git::ssh://git@github.com/cloudposse/helmfiles.git?ref=0.40.0" {
+					return fmt.Errorf("unexpected src: %s", src)
+				}
+
+				hit = false
+
+				return nil
+			}
+
+			getter := &testGetter{
+				get: get,
+			}
+			remote := &Remote{
+				Logger:     helmexec.NewLogger(os.Stderr, "debug"),
+				Home:       "path/to/home",
+				Getter:     getter,
+				ReadFile:   testfs.ReadFile,
+				FileExists: testfs.FileExistsAt,
+				DirExists:  testfs.DirectoryExistsAt,
+			}
+
+			url := "git::ssh://git@github.com/cloudposse/helmfiles.git@releases/kiam.yaml?ref=0.40.0"
+			file, err := remote.Locate(url)
+			if err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+
+			if file != "path/to/home/.helmfile/cache/ssh_github_com_cloudposse_helmfiles_git.ref=0.40.0/releases/kiam.yaml" {
+				t.Errorf("unexpected file located: %s", file)
+			}
+
+			if testcase.expectCacheHit && !hit {
+				t.Errorf("unexpected result: unexpected cache miss")
+			}
+			if !testcase.expectCacheHit && hit {
+				t.Errorf("unexpected result: unexpected cache hit")
+			}
+		})
+	}
+}
+
+type testGetter struct {
+	get func(wd, src, dst string) error
+}
+
+func (t *testGetter) Get(wd, src, dst string) error {
+	return t.get(wd, src, dst)
+}

pkg/state/chart_dependency.go

@@ -0,0 +1,385 @@
+package state
+
+import (
+	"fmt"
+	"github.com/Masterminds/semver"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"go.uber.org/zap"
+	"gopkg.in/yaml.v2"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+)
+
+type ChartMeta struct {
+	Name string `yaml:"name"`
+}
+
+type unresolvedChartDependency struct {
+	// ChartName identifies the dependant chart. In Helmfile, ChartName for `chart: stable/envoy` would be just `envoy`.
+	// It can't be collided with other charts referenced in the same helmfile spec.
+	// That is, collocating `chart: incubator/foo` and `chart: stable/foo` isn't allowed. Name them differently for a work-around.
+	ChartName string `yaml:"name"`
+	// Repository contains the URL for the helm chart repository that hosts the chart identified by ChartName
+	Repository string `yaml:"repository"`
+	// VersionConstraint is the version constraint of the dependent chart. "*" means the latest version.
+	VersionConstraint string `yaml:"version"`
+}
+
+type ResolvedChartDependency struct {
+	// ChartName identifies the dependant chart. In Helmfile, ChartName for `chart: stable/envoy` would be just `envoy`.
+	// It can't be collided with other charts referenced in the same helmfile spec.
+	// That is, collocating `chart: incubator/foo` and `chart: stable/foo` isn't allowed. Name them differently for a work-around.
+	ChartName string `yaml:"name"`
+	// Repository contains the URL for the helm chart repository that hosts the chart identified by ChartName
+	Repository string `yaml:"repository"`
+	// Version is the version number of the dependent chart.
+	// In the context of helmfile this can be omitted. When omitted, it is considered `*` which results helm/helmfile fetching the latest version.
+	Version string `yaml:"version"`
+}
+
+type UnresolvedDependencies struct {
+	deps map[string][]unresolvedChartDependency
+}
+
+type ChartRequirements struct {
+	UnresolvedDependencies []unresolvedChartDependency `yaml:"dependencies"`
+}
+
+type ChartLockedRequirements struct {
+	ResolvedDependencies []ResolvedChartDependency `yaml:"dependencies"`
+	Digest               string                    `yaml:"digest"`
+	Generated            string                    `yaml:"generated"`
+}
+
+func (d *UnresolvedDependencies) Add(chart, url, versionConstraint string) error {
+	dep := unresolvedChartDependency{
+		ChartName:         chart,
+		Repository:        url,
+		VersionConstraint: versionConstraint,
+	}
+	return d.add(dep)
+}
+
+func (d *UnresolvedDependencies) add(dep unresolvedChartDependency) error {
+	deps := d.deps[dep.ChartName]
+	if deps == nil {
+		deps = []unresolvedChartDependency{dep}
+	} else {
+		deps = append(deps, dep)
+	}
+	d.deps[dep.ChartName] = deps
+	return nil
+}
+
+func (d *UnresolvedDependencies) ToChartRequirements() *ChartRequirements {
+	deps := []unresolvedChartDependency{}
+
+	for _, ds := range d.deps {
+		for _, d := range ds {
+			if d.VersionConstraint == "" {
+				d.VersionConstraint = "*"
+			}
+			deps = append(deps, d)
+		}
+	}
+
+	return &ChartRequirements{UnresolvedDependencies: deps}
+}
+
+type ResolvedDependencies struct {
+	deps map[string][]ResolvedChartDependency
+}
+
+func (d *ResolvedDependencies) add(dep ResolvedChartDependency) error {
+	deps := d.deps[dep.ChartName]
+	if deps == nil {
+		deps = []ResolvedChartDependency{dep}
+	} else {
+		deps = append(deps, dep)
+	}
+	d.deps[dep.ChartName] = deps
+	return nil
+}
+
+func (d *ResolvedDependencies) Get(chart, versionConstraint string) (string, error) {
+	if versionConstraint == "" {
+		versionConstraint = "*"
+	}
+
+	deps, exists := d.deps[chart]
+	if exists {
+		for _, dep := range deps {
+			constraint, err := semver.NewConstraint(versionConstraint)
+			if err != nil {
+				return "", err
+			}
+			version, err := semver.NewVersion(dep.Version)
+			if err != nil {
+				return "", err
+			}
+			if constraint.Check(version) {
+				return dep.Version, nil
+			}
+		}
+	}
+	return "", fmt.Errorf("no resolved dependency found for \"%s\"", chart)
+}
+
+func (st *HelmState) mergeLockedDependencies() (*HelmState, error) {
+	filename, unresolved, err := getUnresolvedDependenciess(st)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(unresolved.deps) == 0 {
+		return st, nil
+	}
+
+	depMan := NewChartDependencyManager(filename, st.logger)
+
+	if st.readFile != nil {
+		depMan.readFile = st.readFile
+	}
+
+	return resolveDependencies(st, depMan, unresolved)
+}
+
+func resolveDependencies(st *HelmState, depMan *chartDependencyManager, unresolved *UnresolvedDependencies) (*HelmState, error) {
+	resolved, lockfileExists, err := depMan.Resolve(unresolved)
+	if err != nil {
+		return nil, fmt.Errorf("unable to resolve %d deps: %v", len(unresolved.deps), err)
+	}
+	if !lockfileExists {
+		return st, nil
+	}
+
+	repoToURL := map[string]string{}
+
+	for _, r := range st.Repositories {
+		repoToURL[r.Name] = r.URL
+	}
+
+	updated := *st
+	for i, r := range updated.Releases {
+		repo, chart, ok := resolveRemoteChart(r.Chart)
+		if !ok {
+			continue
+		}
+
+		_, ok = repoToURL[repo]
+		// Skip this chart from dependency management, as there's no matching `repository` in the helmfile state,
+		// which may imply that this is a local chart within a directory, like `charts/myapp`
+		if !ok {
+			continue
+		}
+
+		ver, err := resolved.Get(chart, r.Version)
+		if err != nil {
+			return nil, err
+		}
+
+		updated.Releases[i].Version = ver
+	}
+
+	return &updated, nil
+}
+
+func (st *HelmState) updateDependenciesInTempDir(shell helmexec.DependencyUpdater, tempDir func(string, string) (string, error)) (*HelmState, error) {
+	filename, unresolved, err := getUnresolvedDependenciess(st)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(unresolved.deps) == 0 {
+		return st, nil
+	}
+
+	d, err := tempDir("", "")
+	if err != nil {
+		return nil, fmt.Errorf("unable to create dir: %v", err)
+	}
+	defer os.RemoveAll(d)
+
+	return updateDependencies(st, shell, unresolved, filename, d)
+}
+
+func getUnresolvedDependenciess(st *HelmState) (string, *UnresolvedDependencies, error) {
+	repoToURL := map[string]string{}
+
+	for _, r := range st.Repositories {
+		repoToURL[r.Name] = r.URL
+	}
+
+	unresolved := &UnresolvedDependencies{deps: map[string][]unresolvedChartDependency{}}
+	//if err := unresolved.Add("stable/envoy", "https://kubernetes-charts.storage.googleapis.com", ""); err != nil {
+	//	panic(err)
+	//}
+
+	for _, r := range st.Releases {
+		repo, chart, ok := resolveRemoteChart(r.Chart)
+		if !ok {
+			continue
+		}
+
+		url, ok := repoToURL[repo]
+		// Skip this chart from dependency management, as there's no matching `repository` in the helmfile state,
+		// which may imply that this is a local chart within a directory, like `charts/myapp`
+		if !ok {
+			continue
+		}
+
+		if err := unresolved.Add(chart, url, r.Version); err != nil {
+			return "", nil, err
+		}
+	}
+
+	filename := filepath.Base(st.FilePath)
+	filename = strings.TrimSuffix(filename, ".gotmpl")
+	filename = strings.TrimSuffix(filename, ".yaml")
+	filename = strings.TrimSuffix(filename, ".yml")
+
+	return filename, unresolved, nil
+}
+
+func updateDependencies(st *HelmState, shell helmexec.DependencyUpdater, unresolved *UnresolvedDependencies, filename, wd string) (*HelmState, error) {
+	depMan := NewChartDependencyManager(filename, st.logger)
+
+	_, err := depMan.Update(shell, wd, unresolved)
+	if err != nil {
+		return nil, fmt.Errorf("unable to resolve %d deps: %v", len(unresolved.deps), err)
+	}
+
+	return resolveDependencies(st, depMan, unresolved)
+}
+
+type chartDependencyManager struct {
+	Name string
+
+	logger *zap.SugaredLogger
+
+	readFile  func(string) ([]byte, error)
+	writeFile func(string, []byte, os.FileMode) error
+}
+
+func NewChartDependencyManager(name string, logger *zap.SugaredLogger) *chartDependencyManager {
+	return &chartDependencyManager{
+		Name:      name,
+		readFile:  ioutil.ReadFile,
+		writeFile: ioutil.WriteFile,
+		logger:    logger,
+	}
+}
+
+func (m *chartDependencyManager) lockFileName() string {
+	return fmt.Sprintf("%s.lock", m.Name)
+}
+
+func (m *chartDependencyManager) Update(shell helmexec.DependencyUpdater, wd string, unresolved *UnresolvedDependencies) (*ResolvedDependencies, error) {
+	// Generate `Chart.yaml` of the temporary local chart
+	if err := m.writeBytes(filepath.Join(wd, "Chart.yaml"), []byte(fmt.Sprintf("name: %s\n", m.Name))); err != nil {
+		return nil, err
+	}
+
+	// Generate `requirements.yaml` of the temporary local chart from the helmfile state
+	reqsContent, err := yaml.Marshal(unresolved.ToChartRequirements())
+	if err != nil {
+		return nil, err
+	}
+	if err := m.writeBytes(filepath.Join(wd, "requirements.yaml"), reqsContent); err != nil {
+		return nil, err
+	}
+
+	// Generate `requirements.lock` of the temporary local chart by coping `<basename>.lock`
+	lockFile := m.lockFileName()
+
+	lockFileContent, err := m.readBytes(lockFile)
+	if err != nil && !os.IsNotExist(err) {
+		return nil, err
+	}
+
+	if lockFileContent != nil {
+		if err := m.writeBytes(filepath.Join(wd, "requirements.lock"), lockFileContent); err != nil {
+			return nil, err
+		}
+	}
+
+	// Update the lock file by running `helm dependency update`
+	if err := shell.UpdateDeps(wd); err != nil {
+		return nil, err
+	}
+
+	updatedLockFileContent, err := m.readBytes(filepath.Join(wd, "requirements.lock"))
+	if err != nil {
+		return nil, err
+	}
+
+	// Sort requirements alphabetically by name.
+	lockedReqs := &ChartLockedRequirements{}
+	if err := yaml.Unmarshal(updatedLockFileContent, lockedReqs); err != nil {
+		return nil, err
+	}
+
+	sort.Slice(lockedReqs.ResolvedDependencies, func(i, j int) bool {
+		return lockedReqs.ResolvedDependencies[i].ChartName < lockedReqs.ResolvedDependencies[j].ChartName
+	})
+
+	updatedLockFileContent, err = yaml.Marshal(lockedReqs)
+
+	if err != nil {
+		return nil, err
+	}
+
+	// Commit the lock file if and only if everything looks ok
+	if err := m.writeBytes(lockFile, updatedLockFileContent); err != nil {
+		return nil, err
+	}
+
+	resolved, _, err := m.Resolve(unresolved)
+	return resolved, err
+}
+
+func (m *chartDependencyManager) Resolve(unresolved *UnresolvedDependencies) (*ResolvedDependencies, bool, error) {
+	updatedLockFileContent, err := m.readBytes(m.lockFileName())
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil, false, nil
+		}
+		return nil, false, err
+	}
+
+	// Load resolved dependencies into memory
+	lockedReqs := &ChartLockedRequirements{}
+	if err := yaml.Unmarshal(updatedLockFileContent, lockedReqs); err != nil {
+		return nil, false, err
+	}
+
+	resolved := &ResolvedDependencies{deps: map[string][]ResolvedChartDependency{}}
+	for _, d := range lockedReqs.ResolvedDependencies {
+		if err := resolved.add(d); err != nil {
+			return nil, false, err
+		}
+	}
+
+	return resolved, true, nil
+}
+
+func (m *chartDependencyManager) readBytes(filename string) ([]byte, error) {
+	bytes, err := m.readFile(filename)
+	if err != nil {
+		return nil, err
+	}
+	m.logger.Debugf("readBytes: read from %s:\n%s", filename, bytes)
+	return bytes, nil
+}
+
+func (m *chartDependencyManager) writeBytes(filename string, data []byte) error {
+	err := m.writeFile(filename, data, 0644)
+	if err != nil {
+		return err
+	}
+	m.logger.Debugf("writeBytes: wrote to %s:\n%s", filename, data)
+	return nil
+}

pkg/state/create.go

@@ -0,0 +1,269 @@
+package state
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"github.com/imdario/mergo"
+	"github.com/roboll/helmfile/pkg/environment"
+	"github.com/roboll/helmfile/pkg/helmexec"
+	"github.com/roboll/helmfile/pkg/maputil"
+	"go.uber.org/zap"
+	"gopkg.in/yaml.v2"
+	"io"
+	"os"
+)
+
+type StateLoadError struct {
+	msg   string
+	Cause error
+}
+
+func (e *StateLoadError) Error() string {
+	return fmt.Sprintf("%s: %v", e.msg, e.Cause)
+}
+
+type UndefinedEnvError struct {
+	msg string
+}
+
+func (e *UndefinedEnvError) Error() string {
+	return e.msg
+}
+
+type StateCreator struct {
+	logger     *zap.SugaredLogger
+	readFile   func(string) ([]byte, error)
+	fileExists func(string) (bool, error)
+	abs        func(string) (string, error)
+	glob       func(string) ([]string, error)
+
+	Strict bool
+
+	LoadFile func(inheritedEnv *environment.Environment, baseDir, file string, evaluateBases bool) (*HelmState, error)
+}
+
+func NewCreator(logger *zap.SugaredLogger, readFile func(string) ([]byte, error), fileExists func(string) (bool, error), abs func(string) (string, error), glob func(string) ([]string, error)) *StateCreator {
+	return &StateCreator{
+		logger:     logger,
+		readFile:   readFile,
+		fileExists: fileExists,
+		abs:        abs,
+		glob:       glob,
+		Strict:     true,
+	}
+}
+
+// Parse parses YAML into HelmState
+func (c *StateCreator) Parse(content []byte, baseDir, file string) (*HelmState, error) {
+	var state HelmState
+
+	state.FilePath = file
+	state.basePath = baseDir
+
+	decoder := yaml.NewDecoder(bytes.NewReader(content))
+	if !c.Strict {
+		decoder.SetStrict(false)
+	} else {
+		decoder.SetStrict(true)
+	}
+	i := 0
+	for {
+		i++
+
+		var intermediate HelmState
+
+		err := decoder.Decode(&intermediate)
+		if err == io.EOF {
+			break
+		} else if err != nil {
+			return nil, &StateLoadError{fmt.Sprintf("failed to read %s: reading document at index %d", file, i), err}
+		}
+
+		if err := mergo.Merge(&state, &intermediate, mergo.WithAppendSlice); err != nil {
+			return nil, &StateLoadError{fmt.Sprintf("failed to read %s: merging document at index %d", file, i), err}
+		}
+	}
+
+	if len(state.DeprecatedReleases) > 0 {
+		if len(state.Releases) > 0 {
+			return nil, fmt.Errorf("failed to parse %s: you can't specify both `charts` and `releases` sections", file)
+		}
+		state.Releases = state.DeprecatedReleases
+		state.DeprecatedReleases = []ReleaseSpec{}
+	}
+
+	if state.DeprecatedContext != "" && state.HelmDefaults.KubeContext == "" {
+		state.HelmDefaults.KubeContext = state.DeprecatedContext
+	}
+
+	state.logger = c.logger
+
+	state.readFile = c.readFile
+	state.removeFile = os.Remove
+	state.fileExists = c.fileExists
+	state.glob = c.glob
+
+	return &state, nil
+}
+
+// LoadEnvValues loads environment values files relative to the `baseDir`
+func (c *StateCreator) LoadEnvValues(target *HelmState, env string, ctxEnv *environment.Environment) (*HelmState, error) {
+	state := *target
+
+	e, err := state.loadEnvValues(env, ctxEnv, c.readFile, c.glob)
+	if err != nil {
+		return nil, &StateLoadError{fmt.Sprintf("failed to read %s", state.FilePath), err}
+	}
+
+	e.Defaults, err = state.loadValuesEntries(nil, state.DefaultValues)
+	if err != nil {
+		return nil, err
+	}
+
+	state.Env = *e
+
+	return &state, nil
+}
+
+// Parses YAML into HelmState, while loading environment values files relative to the `baseDir`
+func (c *StateCreator) ParseAndLoad(content []byte, baseDir, file string, envName string, evaluateBases bool, envValues *environment.Environment) (*HelmState, error) {
+	state, err := c.Parse(content, baseDir, file)
+	if err != nil {
+		return nil, err
+	}
+
+	if !evaluateBases {
+		if len(state.Bases) > 0 {
+			return nil, errors.New("nested `base` helmfile is unsupported. please submit a feature request if you need this!")
+		}
+	}
+
+	state, err = c.loadBases(envValues, state, baseDir)
+	if err != nil {
+		return nil, err
+	}
+
+	state, err = c.LoadEnvValues(state, envName, envValues)
+	if err != nil {
+		return nil, err
+	}
+
+	state.FilePath = file
+
+	return state, nil
+}
+
+func (c *StateCreator) loadBases(envValues *environment.Environment, st *HelmState, baseDir string) (*HelmState, error) {
+	layers := []*HelmState{}
+	for _, b := range st.Bases {
+		base, err := c.LoadFile(envValues, baseDir, b, false)
+		if err != nil {
+			return nil, err
+		}
+		layers = append(layers, base)
+	}
+	layers = append(layers, st)
+
+	for i := 1; i < len(layers); i++ {
+		if err := mergo.Merge(layers[0], layers[i], mergo.WithAppendSlice); err != nil {
+			return nil, err
+		}
+	}
+
+	return layers[0], nil
+}
+
+func (st *HelmState) loadEnvValues(name string, ctxEnv *environment.Environment, readFile func(string) ([]byte, error), glob func(string) ([]string, error)) (*environment.Environment, error) {
+	envVals := map[string]interface{}{}
+	envSpec, ok := st.Environments[name]
+	if ok {
+		var err error
+		envVals, err = st.loadValuesEntries(envSpec.MissingFileHandler, envSpec.Values)
+		if err != nil {
+			return nil, err
+		}
+
+		if len(envSpec.Secrets) > 0 {
+			helm := helmexec.New(st.logger, "")
+
+			var envSecretFiles []string
+			for _, urlOrPath := range envSpec.Secrets {
+				resolved, skipped, err := st.storage().resolveFile(envSpec.MissingFileHandler, "environment values", urlOrPath)
+				if err != nil {
+					return nil, err
+				}
+				if skipped {
+					continue
+				}
+
+				envSecretFiles = append(envSecretFiles, resolved...)
+			}
+
+			for _, path := range envSecretFiles {
+				// Work-around to allow decrypting environment secrets
+				//
+				// We don't have releases loaded yet and therefore unable to decide whether
+				// helmfile should use helm-tiller to call helm-secrets or not.
+				//
+				// This means that, when you use environment secrets + tillerless setup, you still need a tiller
+				// installed on the cluster, just for decrypting secrets!
+				// Related: https://github.com/futuresimple/helm-secrets/issues/83
+				release := &ReleaseSpec{}
+				flags := st.appendConnectionFlags([]string{}, release)
+				decFile, err := helm.DecryptSecret(st.createHelmContext(release, 0), path, flags...)
+				if err != nil {
+					return nil, err
+				}
+				bytes, err := readFile(decFile)
+				if err != nil {
+					return nil, fmt.Errorf("failed to load environment secrets file \"%s\": %v", path, err)
+				}
+				m := map[string]interface{}{}
+				if err := yaml.Unmarshal(bytes, &m); err != nil {
+					return nil, fmt.Errorf("failed to load environment secrets file \"%s\": %v", path, err)
+				}
+				// All the nested map key should be string. Otherwise we get strange errors due to that
+				// mergo or reflect is unable to merge map[interface{}]interface{} with map[string]interface{} or vice versa.
+				// See https://github.com/roboll/helmfile/issues/677
+				vals, err := maputil.CastKeysToStrings(m)
+				if err != nil {
+					return nil, err
+				}
+				if err := mergo.Merge(&envVals, &vals, mergo.WithOverride); err != nil {
+					return nil, fmt.Errorf("failed to load \"%s\": %v", path, err)
+				}
+			}
+		}
+	} else if ctxEnv == nil && name != DefaultEnv {
+		return nil, &UndefinedEnvError{msg: fmt.Sprintf("environment \"%s\" is not defined", name)}
+	}
+
+	newEnv := &environment.Environment{Name: name, Values: envVals}
+
+	if ctxEnv != nil {
+		intEnv := *ctxEnv
+
+		if err := mergo.Merge(&intEnv, newEnv, mergo.WithOverride); err != nil {
+			return nil, fmt.Errorf("error while merging environment values for \"%s\": %v", name, err)
+		}
+
+		newEnv = &intEnv
+	}
+
+	return newEnv, nil
+}
+
+func (st *HelmState) loadValuesEntries(missingFileHandler *string, entries []interface{}) (map[string]interface{}, error) {
+	envVals := map[string]interface{}{}
+
+	valuesEntries := append([]interface{}{}, entries...)
+	ld := NewEnvironmentValuesLoader(st.storage(), st.readFile, st.logger)
+	var err error
+	envVals, err = ld.LoadEnvironmentValues(missingFileHandler, valuesEntries)
+	if err != nil {
+		return nil, err
+	}
+
+	return envVals, nil
+}

pkg/state/create_test.go

@@ -1,12 +1,27 @@
 package state
 
 import (
-	"fmt"
+	"github.com/roboll/helmfile/pkg/testhelper"
+	"go.uber.org/zap"
+	"io/ioutil"
 	"path/filepath"
 	"reflect"
 	"testing"
+
+	. "gotest.tools/assert"
+	"gotest.tools/assert/cmp"
 )
 
+func createFromYaml(content []byte, file string, env string, logger *zap.SugaredLogger) (*HelmState, error) {
+	c := &StateCreator{
+		logger:   logger,
+		readFile: ioutil.ReadFile,
+		abs:      filepath.Abs,
+		Strict:   true,
+	}
+	return c.ParseAndLoad(content, filepath.Dir(file), file, env, false, nil)
+}
+
 func TestReadFromYaml(t *testing.T) {
 	yamlFile := "example/path/to/yaml/file"
 	yamlContent := []byte(`releases:
@@ -84,23 +99,17 @@ bar: {{ readFile "bar.txt" }}
 
 	expectedValues := `env: production`
 
-	readFile := func(filename string) ([]byte, error) {
-		switch filename {
-		case fooYamlFile:
-			return fooYamlContent, nil
-		case barYamlFile:
-			return barYamlContent, nil
-		case barTextFile:
-			return barTextContent, nil
-		case valuesFile:
-			return valuesContent, nil
-		}
-		return nil, fmt.Errorf("unexpected filename: %s", filename)
-	}
+	testFs := testhelper.NewTestFs(map[string]string{
+		fooYamlFile: string(fooYamlContent),
+		barYamlFile: string(barYamlContent),
+		barTextFile: string(barTextContent),
+		valuesFile:  string(valuesContent),
+	})
+	testFs.Cwd = "/example/path/to"
 
-	state, err := NewCreator(logger, readFile, filepath.Abs).CreateFromYaml(yamlContent, yamlFile, "production")
+	state, err := NewCreator(logger, testFs.ReadFile, testFs.FileExists, testFs.Abs, testFs.Glob).ParseAndLoad(yamlContent, filepath.Dir(yamlFile), yamlFile, "production", false, nil)
 	if err != nil {
-		t.Errorf("unexpected error: %v", err)
+		t.Fatalf("unexpected error: %v", err)
 	}
 
 	actual := state.Env.Values
@@ -247,3 +256,95 @@ func TestReadFromYaml_FilterNegatives(t *testing.T) {
 		}
 	}
 }
+
+func TestReadFromYaml_Helmfiles_Selectors(t *testing.T) {
+	tests := []struct {
+		path      string
+		content   []byte
+		wantErr   bool
+		helmfiles []SubHelmfileSpec
+	}{
+		{
+			path: "working/selector",
+			content: []byte(`helmfiles:
+- simple/helmfile.yaml
+- path: path/prefix/selector.yaml
+  selectors:
+    - name=zorba
+    - foo=bar
+- path: path/prefix/empty/selector.yaml
+  selectors: []
+- path: path/prefix/inherits/selector.yaml
+  selectorsInherited: true
+`),
+			wantErr: false,
+			helmfiles: []SubHelmfileSpec{{Path: "simple/helmfile.yaml", Selectors: nil, SelectorsInherited: false},
+				{Path: "path/prefix/selector.yaml", Selectors: []string{"name=zorba", "foo=bar"}, SelectorsInherited: false},
+				{Path: "path/prefix/empty/selector.yaml", Selectors: []string{}, SelectorsInherited: false},
+				{Path: "path/prefix/inherits/selector.yaml", Selectors: nil, SelectorsInherited: true},
+			},
+		},
+		{
+			path: "failing2/selector",
+			content: []byte(`helmfiles:
+- path: failing2/helmfile.yaml
+    wrongkey:
+`),
+			wantErr: true,
+		},
+		{
+			path: "failing3/selector",
+			content: []byte(`helmfiles:
+- path: failing3/helmfile.yaml
+    selectors: foo
+`),
+			wantErr: true,
+		},
+		{
+			path: "failing4/selector",
+			content: []byte(`helmfiles:
+- path: failing4/helmfile.yaml
+    selectors:
+`),
+			wantErr: true,
+		},
+		{
+			path: "failing4/selector",
+			content: []byte(`helmfiles:
+- path: failing4/helmfile.yaml
+    selectors:
+      - colon: not-authorized
+`),
+			wantErr: true,
+		},
+		{
+			path: "failing6/selector",
+			content: []byte(`helmfiles:
+- selectors:
+    - whatever
+`),
+			wantErr: true,
+		},
+		{
+			path: "failing7/selector",
+			content: []byte(`helmfiles:
+- path: foo/bar
+  selectors:
+  - foo=bar
+  selectorsInherited: true
+`),
+			wantErr: true,
+		},
+	}
+	for _, test := range tests {
+		st, err := createFromYaml(test.content, test.path, DefaultEnv, logger)
+		if err != nil {
+			if test.wantErr {
+				continue
+			} else {
+				t.Error("unexpected error:", err)
+			}
+		}
+		Assert(t, cmp.DeepEqual(st.Helmfiles, test.helmfiles), "for path %v", test.path)
+	}
+}

pkg/state/environment.go

@@ -0,0 +1,15 @@
+package state
+
+type EnvironmentSpec struct {
+	Values  []interface{} `yaml:"values"`
+	Secrets []string      `yaml:"secrets"`
+
+	// MissingFileHandler instructs helmfile to fail when unable to find a environment values file listed
+	// under `environments.NAME.values`.
+	//
+	// Possible values are  "Error", "Warn", "Info", "Debug". The default is "Error".
+	//
+	// Use "Warn", "Info", or "Debug" if you want helmfile to not fail when a values file is missing, while just leaving
+	// a message about the missing file at the log-level.
+	MissingFileHandler *string `yaml:"missingFileHandler"`
+}

pkg/state/envvals_loader.go

@@ -0,0 +1,83 @@
+package state
+
+import (
+	"fmt"
+	"github.com/imdario/mergo"
+	"github.com/roboll/helmfile/pkg/environment"
+	"github.com/roboll/helmfile/pkg/maputil"
+	"github.com/roboll/helmfile/pkg/tmpl"
+	"go.uber.org/zap"
+	"gopkg.in/yaml.v2"
+	"path/filepath"
+)
+
+type EnvironmentValuesLoader struct {
+	storage *Storage
+
+	readFile func(string) ([]byte, error)
+
+	logger *zap.SugaredLogger
+}
+
+func NewEnvironmentValuesLoader(storage *Storage, readFile func(string) ([]byte, error), logger *zap.SugaredLogger) *EnvironmentValuesLoader {
+	return &EnvironmentValuesLoader{
+		storage:  storage,
+		readFile: readFile,
+		logger:   logger,
+	}
+}
+
+func (ld *EnvironmentValuesLoader) LoadEnvironmentValues(missingFileHandler *string, valuesEntries []interface{}) (map[string]interface{}, error) {
+	result := map[string]interface{}{}
+
+	for _, entry := range valuesEntries {
+		maps := []interface{}{}
+
+		switch strOrMap := entry.(type) {
+		case string:
+			urlOrPath := strOrMap
+			files, skipped, err := ld.storage.resolveFile(missingFileHandler, "environment values", urlOrPath)
+			if err != nil {
+				return nil, err
+			}
+			if skipped {
+				continue
+			}
+
+			for _, f := range files {
+				tmplData := EnvironmentTemplateData{environment.EmptyEnvironment, "", map[string]interface{}{}}
+				r := tmpl.NewFileRenderer(ld.readFile, filepath.Dir(f), tmplData)
+				bytes, err := r.RenderToBytes(f)
+				if err != nil {
+					return nil, fmt.Errorf("failed to load environment values file \"%s\": %v", f, err)
+				}
+				m := map[string]interface{}{}
+				if err := yaml.Unmarshal(bytes, &m); err != nil {
+					return nil, fmt.Errorf("failed to load environment values file \"%s\": %v\n\nOffending YAML:\n%s", f, err, bytes)
+				}
+				maps = append(maps, m)
+				if ld.logger != nil {
+					ld.logger.Debugf("envvals_loader: loaded %s:%v", strOrMap, m)
+				}
+			}
+		case map[interface{}]interface{}:
+			maps = append(maps, strOrMap)
+		default:
+			return nil, fmt.Errorf("unexpected type of value: value=%v, type=%T", strOrMap, strOrMap)
+		}
+		for _, m := range maps {
+			// All the nested map key should be string. Otherwise we get strange errors due to that
+			// mergo or reflect is unable to merge map[interface{}]interface{} with map[string]interface{} or vice versa.
+			// See https://github.com/roboll/helmfile/issues/677
+			vals, err := maputil.CastKeysToStrings(m)
+			if err != nil {
+				return nil, err
+			}
+			if err := mergo.Merge(&result, &vals, mergo.WithOverride); err != nil {
+				return nil, fmt.Errorf("failed to merge %v: %v", m, err)
+			}
+		}
+	}
+
+	return result, nil
+}

pkg/state/helmx.go

@@ -0,0 +1,51 @@
+package state
+
+type Dependency struct {
+	Chart   string `yaml:"chart"`
+	Version string `yaml:"version"`
+	Alias   string `yaml:"alias"`
+}
+
+func (st *HelmState) appendHelmXFlags(flags []string, release *ReleaseSpec) ([]string, error) {
+	for _, d := range release.Dependencies {
+		var dep string
+		if d.Alias != "" {
+			dep += d.Alias + "="
+		}
+		dep += d.Chart
+		if d.Version != "" {
+			dep += ":" + d.Version
+		}
+		flags = append(flags, "--dependency", dep)
+	}
+
+	jsonPatches := release.JSONPatches
+	if len(jsonPatches) > 0 {
+		generatedFiles, err := st.generateTemporaryValuesFiles(jsonPatches, release.MissingFileHandler)
+		if err != nil {
+			return nil, err
+		}
+
+		for _, f := range generatedFiles {
+			flags = append(flags, "--json-patch", f)
+		}
+
+		release.generatedValues = append(release.generatedValues, generatedFiles...)
+	}
+
+	strategicMergePatches := release.StrategicMergePatches
+	if len(strategicMergePatches) > 0 {
+		generatedFiles, err := st.generateTemporaryValuesFiles(strategicMergePatches, release.MissingFileHandler)
+		if err != nil {
+			return nil, err
+		}
+
+		for _, f := range generatedFiles {
+			flags = append(flags, "--strategic-merge-patch", f)
+		}
+
+		release.generatedValues = append(release.generatedValues, generatedFiles...)
+	}
+
+	return flags, nil
+}

pkg/state/release.go

@@ -2,7 +2,8 @@ package state
 
 import (
 	"fmt"
-	"github.com/roboll/helmfile/tmpl"
+
+	"github.com/roboll/helmfile/pkg/tmpl"
 	"gopkg.in/yaml.v2"
 )
 
@@ -15,6 +16,14 @@ func (r ReleaseSpec) ExecuteTemplateExpressions(renderer *tmpl.FileRenderer) (*R
 		return nil, fmt.Errorf("failed executing template expressions in release \"%s\": %v", r.Name, err)
 	}
 
+	{
+		ts := result.Name
+		result.Name, err = renderer.RenderTemplateContentToString([]byte(ts))
+		if err != nil {
+			return nil, fmt.Errorf("failed executing template expressions in release \"%s\".name = \"%s\": %v", r.Name, ts, err)
+		}
+	}
+
 	{
 		ts := result.Chart
 		result.Chart, err = renderer.RenderTemplateContentToString([]byte(ts))
@@ -31,6 +40,14 @@ func (r ReleaseSpec) ExecuteTemplateExpressions(renderer *tmpl.FileRenderer) (*R
 		}
 	}
 
+	{
+		ts := result.Version
+		result.Version, err = renderer.RenderTemplateContentToString([]byte(ts))
+		if err != nil {
+			return nil, fmt.Errorf("failed executing template expressions in release \"%s\".version = \"%s\": %v", r.Name, ts, err)
+		}
+	}
+
 	for i, t := range result.Values {
 		switch ts := t.(type) {
 		case string:
@@ -67,3 +84,7 @@ func (r ReleaseSpec) Clone() (*ReleaseSpec, error) {
 
 	return &deserialized, nil
 }
+
+func (r ReleaseSpec) Desired() bool {
+	return r.Installed == nil || *r.Installed
+}

pkg/state/release_error.go

@@ -0,0 +1,21 @@
+package state
+
+import (
+	"fmt"
+)
+
+const ReleaseErrorCodeFailure = 1
+
+type ReleaseError struct {
+	*ReleaseSpec
+	err  error
+	Code int
+}
+
+func (e *ReleaseError) Error() string {
+	return fmt.Sprintf("failed processing release %s: %v", e.Name, e.err.Error())
+}
+
+func newReleaseError(release *ReleaseSpec, err error) *ReleaseError {
+	return &ReleaseError{release, err, ReleaseErrorCodeFailure}
+}

pkg/state/state_exec_tmpl.go

@@ -0,0 +1,67 @@
+package state
+
+import (
+	"fmt"
+	"github.com/imdario/mergo"
+	"github.com/roboll/helmfile/pkg/maputil"
+	"github.com/roboll/helmfile/pkg/tmpl"
+)
+
+func (st *HelmState) Values() (map[string]interface{}, error) {
+	vals := map[string]interface{}{}
+
+	if err := mergo.Merge(&vals, st.Env.Defaults, mergo.WithOverride); err != nil {
+		return nil, err
+	}
+	if err := mergo.Merge(&vals, st.Env.Values, mergo.WithOverride); err != nil {
+		return nil, err
+	}
+
+	vals, err := maputil.CastKeysToStrings(vals)
+	if err != nil {
+		return nil, err
+	}
+
+	return vals, nil
+}
+
+func (st *HelmState) mustLoadVals() map[string]interface{} {
+	vals, err := st.Values()
+	if err != nil {
+		panic(err)
+	}
+	return vals
+}
+
+func (st *HelmState) valuesFileTemplateData() EnvironmentTemplateData {
+	return EnvironmentTemplateData{
+		Environment: st.Env,
+		Namespace:   st.Namespace,
+		Values:      st.mustLoadVals(),
+	}
+}
+
+func (st *HelmState) ExecuteTemplates() (*HelmState, error) {
+	r := *st
+
+	vals, err := st.Values()
+	if err != nil {
+		return nil, err
+	}
+
+	for i, rt := range st.Releases {
+		tmplData := releaseTemplateData{
+			Environment: st.Env,
+			Release:     rt,
+			Values:      vals,
+		}
+		renderer := tmpl.NewFileRenderer(st.readFile, st.basePath, tmplData)
+		r, err := rt.ExecuteTemplateExpressions(renderer)
+		if err != nil {
+			return nil, fmt.Errorf("failed executing templates in release \"%s\".\"%s\": %v", st.FilePath, rt.Name, err)
+		}
+		st.Releases[i] = *r
+	}
+
+	return &r, nil
+}

pkg/state/state_exec_tmpl_test.go

@@ -1,10 +1,9 @@
 package state
 
 import (
+	"github.com/roboll/helmfile/pkg/environment"
 	"reflect"
 	"testing"
-
-	"github.com/roboll/helmfile/environment"
 )
 
 func TestHelmState_executeTemplates(t *testing.T) {
@@ -17,7 +16,7 @@ func TestHelmState_executeTemplates(t *testing.T) {
 			name: "Has template expressions in chart, values, and secrets",
 			input: ReleaseSpec{
 				Chart:     "test-charts/{{ .Release.Name }}",
-				Version:   "0.1",
+				Version:   "{{ .Release.Name }}-0.1",
 				Verify:    nil,
 				Name:      "test-app",
 				Namespace: "test-namespace-{{ .Release.Name }}",
@@ -26,7 +25,7 @@ func TestHelmState_executeTemplates(t *testing.T) {
 			},
 			want: ReleaseSpec{
 				Chart:     "test-charts/test-app",
-				Version:   "0.1",
+				Version:   "test-app-0.1",
 				Verify:    nil,
 				Name:      "test-app",
 				Namespace: "test-namespace-test-app",
@@ -36,7 +35,8 @@ func TestHelmState_executeTemplates(t *testing.T) {
 		},
 	}
 
-	for _, tt := range tests {
+	for i := range tests {
+		tt := tests[i]
 		t.Run(tt.name, func(t *testing.T) {
 			state := &HelmState{
 				basePath: ".",
@@ -71,6 +71,9 @@ func TestHelmState_executeTemplates(t *testing.T) {
 			if !reflect.DeepEqual(actual.Secrets, tt.want.Secrets) {
 				t.Errorf("expected %+v, got %+v", tt.want.Secrets, actual.Secrets)
 			}
+			if !reflect.DeepEqual(actual.Version, tt.want.Version) {
+				t.Errorf("expected %+v, got %+v", tt.want.Version, actual.Version)
+			}
 		})
 	}
 }

pkg/state/state_run.go

@@ -2,7 +2,7 @@ package state
 
 import (
 	"fmt"
-	"github.com/roboll/helmfile/helmexec"
+	"github.com/roboll/helmfile/pkg/helmexec"
 	"sync"
 )
 
@@ -19,6 +19,16 @@ func (st *HelmState) scatterGather(concurrency int, items int, produceInputs fun
 		concurrency = numReleases
 	}
 
+	for _, r := range st.Releases {
+		if r.Tillerless != nil {
+			if *r.Tillerless {
+				concurrency = 1
+			}
+		} else if st.HelmDefaults.Tillerless {
+			concurrency = 1
+		}
+	}
+
 	// WaitGroup is required to wait until goroutine per job in job queue cleanly stops.
 	var waitGroup sync.WaitGroup
 	waitGroup.Add(concurrency)
@@ -40,7 +50,8 @@ func (st *HelmState) scatterGather(concurrency int, items int, produceInputs fun
 	waitGroup.Wait()
 }
 
-func (st *HelmState) scatterGatherReleases(helm helmexec.Interface, concurrency int, do func(ReleaseSpec) error) []error {
+func (st *HelmState) scatterGatherReleases(helm helmexec.Interface, concurrency int,
+	do func(ReleaseSpec, int) error) []error {
 	var errs []error
 
 	inputs := st.Releases
@@ -60,7 +71,7 @@ func (st *HelmState) scatterGatherReleases(helm helmexec.Interface, concurrency
 		},
 		func(id int) {
 			for release := range releases {
-				err := do(release)
+				err := do(release, id)
 				st.logger.Debugf("sending result for release: %s\n", release.Name)
 				results <- result{release: release, err: err}
 				st.logger.Debugf("sent result for release: %s\n", release.Name)

pkg/state/storage.go

@@ -0,0 +1,99 @@
+package state
+
+import (
+	"fmt"
+	"go.uber.org/zap"
+	"net/url"
+	"path/filepath"
+	"sort"
+)
+
+type Storage struct {
+	logger *zap.SugaredLogger
+
+	FilePath string
+
+	basePath string
+	glob     func(string) ([]string, error)
+}
+
+func NewStorage(forFile string, logger *zap.SugaredLogger, glob func(string) ([]string, error)) *Storage {
+	return &Storage{
+		FilePath: forFile,
+		basePath: filepath.Dir(forFile),
+		logger:   logger,
+		glob:     glob,
+	}
+}
+
+func (st *Storage) resolveFile(missingFileHandler *string, tpe, path string) ([]string, bool, error) {
+	title := fmt.Sprintf("%s file", tpe)
+
+	files, err := st.ExpandPaths(path)
+	if err != nil {
+		return nil, false, err
+	}
+
+	var handlerId string
+
+	if missingFileHandler != nil {
+		handlerId = *missingFileHandler
+	} else {
+		handlerId = MissingFileHandlerError
+	}
+
+	if len(files) == 0 {
+		switch handlerId {
+		case MissingFileHandlerError:
+			return nil, false, fmt.Errorf("%s matching \"%s\" does not exist in \"%s\"", title, path, st.basePath)
+		case MissingFileHandlerWarn:
+			st.logger.Warnf("skipping missing %s matching \"%s\"", title, path)
+			return nil, true, nil
+		case MissingFileHandlerInfo:
+			st.logger.Infof("skipping missing %s matching \"%s\"", title, path)
+			return nil, true, nil
+		case MissingFileHandlerDebug:
+			st.logger.Debugf("skipping missing %s matching \"%s\"", title, path)
+			return nil, true, nil
+		default:
+			available := []string{
+				MissingFileHandlerError,
+				MissingFileHandlerWarn,
+				MissingFileHandlerInfo,
+				MissingFileHandlerDebug,
+			}
+			return nil, false, fmt.Errorf("invalid missing file handler \"%s\" while processing \"%s\" in \"%s\": it must be one of %s", handlerId, path, st.FilePath, available)
+		}
+	}
+
+	return files, false, nil
+}
+
+func (st *Storage) ExpandPaths(globPattern string) ([]string, error) {
+	result := []string{}
+	absPathPattern := st.normalizePath(globPattern)
+	matches, err := st.glob(absPathPattern)
+	if err != nil {
+		return nil, fmt.Errorf("failed processing %s: %v", globPattern, err)
+	}
+
+	sort.Strings(matches)
+
+	result = append(result, matches...)
+	return result, nil
+}
+
+// normalizes relative path to absolute one
+func (st *Storage) normalizePath(path string) string {
+	u, _ := url.Parse(path)
+	if u.Scheme != "" || filepath.IsAbs(path) {
+		return path
+	} else {
+		return st.JoinBase(path)
+	}
+}
+
+// JoinBase returns an absolute path in the form basePath/relative
+func (st *Storage) JoinBase(relPath string) string {
+	return filepath.Join(st.basePath, relPath)
+}

pkg/state/types.go

@@ -1,6 +1,8 @@
 package state
 
-import "github.com/roboll/helmfile/environment"
+import (
+	"github.com/roboll/helmfile/pkg/environment"
+)
 
 // TemplateSpec defines the structure of a reusable and composable template for helm releases.
 type TemplateSpec struct {
@@ -13,12 +15,16 @@ type EnvironmentTemplateData struct {
 	Environment environment.Environment
 	// Namespace is accessible as `.Namespace` from any non-values template executed by the renderer
 	Namespace string
+	// Values is accessible as `.Values` and it contains default state values overrode by environment values and override values.
+	Values map[string]interface{}
 }
 
-// ReleaseTemplateData provides variables accessible while executing golang text/template expressions in releases of a helmfile YAML file
-type ReleaseTemplateData struct {
+// releaseTemplateData provides variables accessible while executing golang text/template expressions in releases of a helmfile YAML file
+type releaseTemplateData struct {
 	// Environment is accessible as `.Environment` from any template expression executed by the renderer
 	Environment environment.Environment
 	// Release is accessible as `.Release` from any template expression executed by the renderer
 	Release ReleaseSpec
+	// Values is accessible as `.Values` and it contains default state values overrode by environment values and override values.
+	Values map[string]interface{}
 }

pkg/state/util.go

@@ -0,0 +1,40 @@
+package state
+
+import (
+	"regexp"
+	"strings"
+)
+
+func isLocalChart(chart string) bool {
+	regex, _ := regexp.Compile("^[.]?./")
+	matched := regex.MatchString(chart)
+	if matched {
+		return true
+	}
+
+	uriLike := strings.Index(chart, "://") > -1
+	if uriLike {
+		return false
+	}
+
+	return chart == "" ||
+		chart[0] == '/' ||
+		strings.Index(chart, "/") == -1 ||
+		len(strings.Split(chart, "/")) != 2
+}
+
+func resolveRemoteChart(repoAndChart string) (string, string, bool) {
+	if isLocalChart(repoAndChart) {
+		return "", "", false
+	}
+
+	parts := strings.Split(repoAndChart, "/")
+	if len(parts) != 2 {
+		return "", "", false
+	}
+
+	repo := parts[0]
+	chart := parts[1]
+
+	return repo, chart, true
+}

pkg/state/util_test.go

@@ -0,0 +1,113 @@
+package state
+
+import "testing"
+
+func TestIsLocalChart(t *testing.T) {
+	testcases := []struct {
+		input    string
+		expected bool
+	}{
+		{
+			input:    "mychart",
+			expected: true,
+		},
+		{
+			input:    "stable/mysql",
+			expected: false,
+		},
+		{
+			input:    "./charts/myapp",
+			expected: true,
+		},
+		{
+			input:    "charts/mysubsystem/myapp",
+			expected: true,
+		},
+		{
+			input:    "./charts/mysubsystem/myapp",
+			expected: true,
+		},
+		{
+			// Regression test case for:
+			// * https://github.com/roboll/helmfile/issues/675
+			// * https://github.com/roboll/helmfile/issues/687
+			input:    "https://github.com/arangodb/kube-arangodb/releases/download/0.3.11/kube-arangodb-crd.tgz",
+			expected: false,
+		},
+		{
+			input:    "https://example.com/bar.tgz",
+			expected: false,
+		},
+	}
+
+	for i := range testcases {
+		testcase := testcases[i]
+
+		actual := isLocalChart(testcase.input)
+
+		if testcase.expected != actual {
+			t.Errorf("unexpected result: isLocalChart(\"%s\"): expected=%v, got=%v", testcase.input, testcase.expected, actual)
+		}
+	}
+}
+
+func TestResolveRemortChart(t *testing.T) {
+	testcases := []struct {
+		input  string
+		repo   string
+		chart  string
+		remote bool
+	}{
+		{
+			input:  "mychart",
+			remote: false,
+		},
+		{
+			input:  "stable/mysql",
+			repo:   "stable",
+			chart:  "mysql",
+			remote: true,
+		},
+		{
+			input:  "./charts/myapp",
+			remote: false,
+		},
+		{
+			input:  "charts/mysubsystem/myapp",
+			remote: false,
+		},
+		{
+			input:  "./charts/mysubsystem/myapp",
+			remote: false,
+		},
+		{
+			// Regression test case for:
+			// * https://github.com/roboll/helmfile/issues/675
+			// * https://github.com/roboll/helmfile/issues/687
+			input:  "https://github.com/arangodb/kube-arangodb/releases/download/0.3.11/kube-arangodb-crd.tgz",
+			remote: false,
+		},
+		{
+			input:  "https://example.com/bar.tgz",
+			remote: false,
+		},
+	}
+
+	for i := range testcases {
+		testcase := testcases[i]
+
+		repo, chart, actual := resolveRemoteChart(testcase.input)
+
+		if testcase.remote != actual {
+			t.Fatalf("unexpected result: reolveRemoteChart(\"%s\"): expected=%v, got=%v", testcase.input, testcase.remote, actual)
+		}
+
+		if testcase.repo != repo {
+			t.Errorf("unexpected repo: %s: expected=%v, got=%v", testcase.input, testcase.repo, repo)
+		}
+
+		if testcase.chart != chart {
+			t.Errorf("unexpected chart: %s: expected=%v, got=%v", testcase.input, testcase.chart, chart)
+		}
+	}
+}

pkg/testhelper/testfs.go

@@ -0,0 +1,137 @@
+package testhelper
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+type TestFs struct {
+	Cwd   string
+	dirs  map[string]bool
+	files map[string]string
+
+	GlobFixtures map[string][]string
+
+	fileReaderCalls int
+	successfulReads []string
+}
+
+func NewTestFs(files map[string]string) *TestFs {
+	dirs := map[string]bool{}
+	for abs, _ := range files {
+		for d := filepath.Dir(abs); !dirs[d]; d = filepath.Dir(d) {
+			dirs[d] = true
+			fmt.Fprintf(os.Stderr, "testfs: recognized dir: %s\n", d)
+		}
+	}
+	return &TestFs{
+		Cwd:   "/path/to",
+		dirs:  dirs,
+		files: files,
+
+		successfulReads: []string{},
+
+		GlobFixtures: map[string][]string{},
+	}
+}
+
+func (f *TestFs) FileExistsAt(path string) bool {
+	var ok bool
+	if strings.Contains(path, "/") {
+		_, ok = f.files[path]
+	} else {
+		_, ok = f.files[filepath.Join(f.Cwd, path)]
+	}
+	return ok
+}
+
+func (f *TestFs) FileExists(path string) (bool, error) {
+	return f.FileExistsAt(path), nil
+}
+
+func (f *TestFs) DirectoryExistsAt(path string) bool {
+	var ok bool
+	if strings.Contains(path, "/") {
+		_, ok = f.dirs[path]
+	} else {
+		_, ok = f.dirs[filepath.Join(f.Cwd, path)]
+	}
+	return ok
+}
+
+func (f *TestFs) ReadFile(filename string) ([]byte, error) {
+	var str string
+	var ok bool
+	if filename[0] == '/' {
+		str, ok = f.files[filename]
+	} else {
+		str, ok = f.files[filepath.Join(f.Cwd, filename)]
+	}
+	if !ok {
+		return []byte(nil), fmt.Errorf("no registered file found: %s", filename)
+	}
+
+	f.fileReaderCalls += 1
+
+	f.successfulReads = append(f.successfulReads, filename)
+
+	return []byte(str), nil
+}
+
+func (f *TestFs) SuccessfulReads() []string {
+	return f.successfulReads
+}
+
+func (f *TestFs) FileReaderCalls() int {
+	return f.fileReaderCalls
+}
+
+func (f *TestFs) Glob(relPattern string) ([]string, error) {
+	var pattern string
+	if relPattern[0] == '/' {
+		pattern = relPattern
+	} else {
+		pattern = filepath.Join(f.Cwd, relPattern)
+	}
+
+	fixtures, ok := f.GlobFixtures[pattern]
+	if ok {
+		return fixtures, nil
+	}
+
+	matches := []string{}
+	for name, _ := range f.files {
+		matched, err := filepath.Match(pattern, name)
+		if err != nil {
+			return nil, err
+		}
+		if matched {
+			matches = append(matches, name)
+		}
+	}
+	return matches, nil
+}
+
+func (f *TestFs) Abs(path string) (string, error) {
+	var p string
+	if path[0] == '/' {
+		p = path
+	} else {
+		p = filepath.Join(f.Cwd, path)
+	}
+	return filepath.Clean(p), nil
+}
+
+func (f *TestFs) Getwd() (string, error) {
+	return f.Cwd, nil
+}
+
+func (f *TestFs) Chdir(dir string) error {
+	if _, ok := f.dirs[dir]; ok {
+		f.Cwd = dir
+		return nil
+	}
+	return fmt.Errorf("unexpected chdir \"%s\"", dir)
+}

pkg/tmpl/context_funcs.go

@@ -24,6 +24,7 @@ func (c *Context) createFuncMap() template.FuncMap {
 		"requiredEnv":    RequiredEnv,
 		"get":            get,
 		"getOrNil":       getOrNil,
+		"tpl":            c.Tpl,
 	}
 	if c.preRender {
 		// disable potential side-effect template calls
@@ -128,6 +129,14 @@ func (c *Context) ReadFile(filename string) (string, error) {
 	return string(bytes), nil
 }
 
+func (c *Context) Tpl(text string, data interface{}) (string, error) {
+	buf, err := c.RenderTemplateToBuffer(text, data)
+	if err != nil {
+		return "", err
+	}
+	return buf.String(), nil
+}
+
 func ToYaml(v interface{}) (string, error) {
 	data, err := yaml.Marshal(v)
 	if err != nil {

pkg/tmpl/context_funcs_test.go

@@ -118,3 +118,18 @@ func TestSetValueAtPath_TwoComponents(t *testing.T) {
 		t.Errorf("unexpected result: expected=%v, actual=%v", expected, actual)
 	}
 }
+
+func TestTpl(t *testing.T) {
+	text := `foo: {{ .foo }}
+`
+	expected := `foo: FOO
+`
+	ctx := &Context{basePath: "."}
+	actual, err := ctx.Tpl(text, map[string]interface{}{"foo": "FOO"})
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if !reflect.DeepEqual(actual, expected) {
+		t.Errorf("unexpected result: expected=%v, actual=%v", expected, actual)
+	}
+}

pkg/tmpl/context_tmpl.go

@@ -13,9 +13,9 @@ func (c *Context) stringTemplate() *template.Template {
 	}
 	tmpl := template.New("stringTemplate").Funcs(funcMap)
 	if c.preRender {
-		tmpl.Option("missingkey=zero")
+		tmpl = tmpl.Option("missingkey=zero")
 	} else {
-		tmpl.Option("missingkey=error")
+		tmpl = tmpl.Option("missingkey=error")
 	}
 	return tmpl
 }

pkg/tmpl/context_tmpl_test.go

@@ -110,11 +110,11 @@ func TestRenderTemplate_Defaulting(t *testing.T) {
 	}
 }
 
-func renderTemplateToString(s string) (string, error) {
+func renderTemplateToString(s string, data ...interface{}) (string, error) {
 	ctx := &Context{readFile: func(filename string) ([]byte, error) {
 		return nil, fmt.Errorf("unexpected call to readFile: filename=%s", filename)
 	}}
-	tplString, err := ctx.RenderTemplateToBuffer(s)
+	tplString, err := ctx.RenderTemplateToBuffer(s, data...)
 	if err != nil {
 		return "", err
 	}
@@ -125,6 +125,7 @@ func Test_renderTemplateToString(t *testing.T) {
 	type args struct {
 		s    string
 		envs map[string]string
+		data interface{}
 	}
 	tests := []struct {
 		name    string
@@ -177,6 +178,18 @@ func Test_renderTemplateToString(t *testing.T) {
 			want:    "7",
 			wantErr: false,
 		},
+		{
+			name: "get",
+			args: args{
+				s:    `{{ . | get "Foo" }}, {{ . | get "Bar" "2" }}`,
+				envs: map[string]string{},
+				data: map[string]interface{}{
+					"Foo": "1",
+				},
+			},
+			want:    "1, 2",
+			wantErr: false,
+		},
 		{
 			name: "env var not set",
 			args: args{
@@ -217,7 +230,8 @@ func Test_renderTemplateToString(t *testing.T) {
 			wantErr: true,
 		},
 	}
-	for _, tt := range tests {
+	for i := range tests {
+		tt := tests[i]
 		t.Run(tt.name, func(t *testing.T) {
 			for k, v := range tt.args.envs {
 				err := os.Setenv(k, v)
@@ -225,7 +239,7 @@ func Test_renderTemplateToString(t *testing.T) {
 					t.Error("renderTemplateToString() could not set env var for testing")
 				}
 			}
-			got, err := renderTemplateToString(tt.args.s)
+			got, err := renderTemplateToString(tt.args.s, tt.args.data)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("renderTemplateToString() for %s error = %v, wantErr %v", tt.name, err, tt.wantErr)
 				return

pkg/tmpl/file_renderer.go

@@ -46,6 +46,8 @@ func (r *FileRenderer) RenderTemplateFileToBuffer(file string) (*bytes.Buffer, e
 	return r.RenderTemplateContentToBuffer(content)
 }
 
+// RenderToBytes loads the content of the file.
+// If its extension is `gotmpl` it treats the content as a go template and renders it.
 func (r *FileRenderer) RenderToBytes(path string) ([]byte, error) {
 	var yamlBytes []byte
 	splits := strings.Split(path, ".")

pkg/tmpl/file_renderer_test.go

@@ -2,7 +2,7 @@ package tmpl
 
 import (
 	"fmt"
-	"github.com/roboll/helmfile/environment"
+	"github.com/roboll/helmfile/pkg/environment"
 	"reflect"
 	"testing"
 )

pkg/tmpl/get_or_nil.go

@@ -14,36 +14,67 @@ func (e *noValueError) Error() string {
 	return e.msg
 }
 
-func get(path string, obj interface{}) (interface{}, error) {
+func get(path string, varArgs ...interface{}) (interface{}, error) {
+	var defSet bool
+	var def interface{}
+	var obj interface{}
+	switch len(varArgs) {
+	case 1:
+		defSet = false
+		def = nil
+		obj = varArgs[0]
+	case 2:
+		defSet = true
+		def = varArgs[0]
+		obj = varArgs[1]
+	default:
+		return nil, fmt.Errorf("unexpected number of args pased to the template function get(path, [def, ]obj): expected 1 or 2, got %d, args was %v", len(varArgs), varArgs)
+	}
+
 	if path == "" {
 		return obj, nil
 	}
 	keys := strings.Split(path, ".")
+	var v interface{}
+	var ok bool
 	switch typedObj := obj.(type) {
 	case map[string]interface{}:
-		v, ok := typedObj[keys[0]]
+		v, ok = typedObj[keys[0]]
 		if !ok {
+			if defSet {
+				return def, nil
+			}
 			return nil, &noValueError{fmt.Sprintf("no value exist for key \"%s\" in %v", keys[0], typedObj)}
 		}
-		return get(strings.Join(keys[1:], "."), v)
 	case map[interface{}]interface{}:
-		v, ok := typedObj[keys[0]]
+		v, ok = typedObj[keys[0]]
 		if !ok {
+			if defSet {
+				return def, nil
+			}
 			return nil, &noValueError{fmt.Sprintf("no value exist for key \"%s\" in %v", keys[0], typedObj)}
 		}
-		return get(strings.Join(keys[1:], "."), v)
 	default:
 		maybeStruct := reflect.ValueOf(typedObj)
-		if maybeStruct.NumField() < 1 {
+		if maybeStruct.Kind() != reflect.Struct {
 			return nil, &noValueError{fmt.Sprintf("unexpected type(%v) of value for key \"%s\": it must be either map[string]interface{} or any struct", reflect.TypeOf(obj), keys[0])}
+		} else if maybeStruct.NumField() < 1 {
+			return nil, &noValueError{fmt.Sprintf("no accessible struct fields for key \"%s\"", keys[0])}
 		}
 		f := maybeStruct.FieldByName(keys[0])
 		if !f.IsValid() {
+			if defSet {
+				return def, nil
+			}
 			return nil, &noValueError{fmt.Sprintf("no field named \"%s\" exist in %v", keys[0], typedObj)}
 		}
-		v := f.Interface()
-		return get(strings.Join(keys[1:], "."), v)
+		v = f.Interface()
 	}
+
+	if defSet {
+		return get(strings.Join(keys[1:], "."), def, v)
+	}
+	return get(strings.Join(keys[1:], "."), v)
 }
 
 func getOrNil(path string, o interface{}) (interface{}, error) {

pkg/tmpl/get_or_nil_test.go

@@ -4,6 +4,9 @@ import (
 	"testing"
 )
 
+type EmptyStruct struct {
+}
+
 func TestGetStruct(t *testing.T) {
 	type Foo struct{ Bar string }
 
@@ -23,6 +26,12 @@ func TestGetStruct(t *testing.T) {
 	if err == nil {
 		t.Errorf("expected error but was not occurred")
 	}
+
+	_, err = get("foo", EmptyStruct{})
+
+	if err == nil {
+		t.Errorf("expected error but was not occurred")
+	}
 }
 
 func TestGetMap(t *testing.T) {
@@ -44,6 +53,34 @@ func TestGetMap(t *testing.T) {
 	}
 }
 
+func TestGet_Default(t *testing.T) {
+	obj := map[string]interface{}{"Foo": map[string]interface{}{}, "foo": 1}
+
+	v1, err := get("Foo.Bar", "Bar", obj)
+
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if v1 != "Bar" {
+		t.Errorf("unexpected value for path Foo.Bar in %v: expected=Bar, actual=%v", obj, v1)
+	}
+
+	v2, err := get("Baz", "Baz", obj)
+
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+	if v2 != "Baz" {
+		t.Errorf("unexpected value for path Baz in %v: expected=Baz, actual=%v", obj, v2)
+	}
+
+	_, err = get("foo.Bar", "fooBar", obj)
+
+	if err == nil {
+		t.Errorf("expected error but was not occurred")
+	}
+}
+
 func TestGetOrNilStruct(t *testing.T) {
 	type Foo struct{ Bar string }
 

state/create.go

@@ -1,172 +0,0 @@
-package state
-
-import (
-	"bytes"
-	"fmt"
-	"github.com/imdario/mergo"
-	"github.com/roboll/helmfile/environment"
-	"github.com/roboll/helmfile/helmexec"
-	"github.com/roboll/helmfile/tmpl"
-	"go.uber.org/zap"
-	"gopkg.in/yaml.v2"
-	"io"
-	"io/ioutil"
-	"os"
-	"path/filepath"
-)
-
-type StateLoadError struct {
-	msg   string
-	Cause error
-}
-
-func (e *StateLoadError) Error() string {
-	return fmt.Sprintf("%s: %v", e.msg, e.Cause)
-}
-
-type UndefinedEnvError struct {
-	msg string
-}
-
-func (e *UndefinedEnvError) Error() string {
-	return e.msg
-}
-
-func createFromYaml(content []byte, file string, env string, logger *zap.SugaredLogger) (*HelmState, error) {
-	c := &creator{
-		logger,
-		ioutil.ReadFile,
-		filepath.Abs,
-		true,
-	}
-	return c.CreateFromYaml(content, file, env)
-}
-
-type creator struct {
-	logger   *zap.SugaredLogger
-	readFile func(string) ([]byte, error)
-	abs      func(string) (string, error)
-
-	Strict bool
-}
-
-func NewCreator(logger *zap.SugaredLogger, readFile func(string) ([]byte, error), abs func(string) (string, error)) *creator {
-	return &creator{
-		logger:   logger,
-		readFile: readFile,
-		abs:      abs,
-		Strict:   true,
-	}
-}
-
-func (c *creator) CreateFromYaml(content []byte, file string, env string) (*HelmState, error) {
-	var state HelmState
-
-	basePath, err := c.abs(filepath.Dir(file))
-	if err != nil {
-		return nil, &StateLoadError{fmt.Sprintf("failed to read %s", file), err}
-	}
-	state.FilePath = file
-	state.basePath = basePath
-
-	decoder := yaml.NewDecoder(bytes.NewReader(content))
-	if !c.Strict {
-		decoder.SetStrict(false)
-	} else {
-		decoder.SetStrict(true)
-	}
-	i := 0
-	for {
-		i++
-
-		var intermediate HelmState
-
-		err := decoder.Decode(&intermediate)
-		if err == io.EOF {
-			break
-		} else if err != nil {
-			return nil, &StateLoadError{fmt.Sprintf("failed to read %s: reading document at index %d", file, i), err}
-		}
-
-		if err := mergo.Merge(&state, &intermediate, mergo.WithAppendSlice); err != nil {
-			return nil, &StateLoadError{fmt.Sprintf("failed to read %s: merging document at index %d", file, i), err}
-		}
-	}
-
-	if len(state.DeprecatedReleases) > 0 {
-		if len(state.Releases) > 0 {
-			return nil, fmt.Errorf("failed to parse %s: you can't specify both `charts` and `releases` sections", file)
-		}
-		state.Releases = state.DeprecatedReleases
-		state.DeprecatedReleases = []ReleaseSpec{}
-	}
-
-	if state.DeprecatedContext != "" && state.HelmDefaults.KubeContext == "" {
-		state.HelmDefaults.KubeContext = state.DeprecatedContext
-	}
-
-	state.logger = c.logger
-
-	e, err := state.loadEnv(env, c.readFile)
-	if err != nil {
-		return nil, &StateLoadError{fmt.Sprintf("failed to read %s", file), err}
-	}
-	state.Env = *e
-
-	state.readFile = c.readFile
-
-	return &state, nil
-}
-
-func (st *HelmState) loadEnv(name string, readFile func(string) ([]byte, error)) (*environment.Environment, error) {
-	envVals := map[string]interface{}{}
-	envSpec, ok := st.Environments[name]
-	if ok {
-		for _, envvalFile := range envSpec.Values {
-			envvalFullPath := filepath.Join(st.basePath, envvalFile)
-			tmplData := EnvironmentTemplateData{Environment: environment.EmptyEnvironment, Namespace: ""}
-			r := tmpl.NewFileRenderer(readFile, filepath.Dir(envvalFullPath), tmplData)
-			bytes, err := r.RenderToBytes(envvalFullPath)
-			if err != nil {
-				return nil, fmt.Errorf("failed to load environment values file \"%s\": %v", envvalFile, err)
-			}
-			m := map[string]interface{}{}
-			if err := yaml.Unmarshal(bytes, &m); err != nil {
-				return nil, fmt.Errorf("failed to load environment values file \"%s\": %v", envvalFile, err)
-			}
-			if err := mergo.Merge(&envVals, &m, mergo.WithOverride); err != nil {
-				return nil, fmt.Errorf("failed to load \"%s\": %v", envvalFile, err)
-			}
-		}
-
-		if len(envSpec.Secrets) > 0 {
-			helm := helmexec.New(st.logger, "")
-			for _, secFile := range envSpec.Secrets {
-				path := filepath.Join(st.basePath, secFile)
-				if _, err := os.Stat(path); os.IsNotExist(err) {
-					return nil, err
-				}
-
-				decFile, err := helm.DecryptSecret(path)
-				if err != nil {
-					return nil, err
-				}
-				bytes, err := readFile(decFile)
-				if err != nil {
-					return nil, fmt.Errorf("failed to load environment secrets file \"%s\": %v", secFile, err)
-				}
-				m := map[string]interface{}{}
-				if err := yaml.Unmarshal(bytes, &m); err != nil {
-					return nil, fmt.Errorf("failed to load environment secrets file \"%s\": %v", secFile, err)
-				}
-				if err := mergo.Merge(&envVals, &m, mergo.WithOverride); err != nil {
-					return nil, fmt.Errorf("failed to load \"%s\": %v", secFile, err)
-				}
-			}
-		}
-	} else if name != DefaultEnv {
-		return nil, &UndefinedEnvError{msg: fmt.Sprintf("environment \"%s\" is not defined", name)}
-	}
-
-	return &environment.Environment{Name: name, Values: envVals}, nil
-}

state/environment.go

@@ -1,6 +0,0 @@
-package state
-
-type EnvironmentSpec struct {
-	Values  []string `yaml:"values"`
-	Secrets []string `yaml:"secrets"`
-}

state/state_exec_tmpl.go

@@ -1,32 +0,0 @@
-package state
-
-import (
-	"fmt"
-	"github.com/roboll/helmfile/tmpl"
-)
-
-func (st *HelmState) envTemplateData() EnvironmentTemplateData {
-	return EnvironmentTemplateData{
-		st.Env,
-		st.Namespace,
-	}
-}
-
-func (st *HelmState) ExecuteTemplates() (*HelmState, error) {
-	r := *st
-
-	for i, rt := range st.Releases {
-		tmplData := ReleaseTemplateData{
-			Environment: st.Env,
-			Release:     rt,
-		}
-		renderer := tmpl.NewFileRenderer(st.readFile, st.basePath, tmplData)
-		r, err := rt.ExecuteTemplateExpressions(renderer)
-		if err != nil {
-			return nil, fmt.Errorf("failed executing templates in release \"%s\".\"%s\": %v", st.FilePath, rt.Name, err)
-		}
-		st.Releases[i] = *r
-	}
-
-	return &r, nil
-}

state/state_test.go

@@ -1,995 +0,0 @@
-package state
-
-import (
-	"os"
-	"reflect"
-	"testing"
-
-	"errors"
-	"strings"
-
-	"github.com/roboll/helmfile/helmexec"
-)
-
-var logger = helmexec.NewLogger(os.Stdout, "warn")
-
-func TestLabelParsing(t *testing.T) {
-	cases := []struct {
-		labelString    string
-		expectedFilter LabelFilter
-		errorExected   bool
-	}{
-		{"foo=bar", LabelFilter{positiveLabels: [][]string{[]string{"foo", "bar"}}, negativeLabels: [][]string{}}, false},
-		{"foo!=bar", LabelFilter{positiveLabels: [][]string{}, negativeLabels: [][]string{[]string{"foo", "bar"}}}, false},
-		{"foo!=bar,baz=bat", LabelFilter{positiveLabels: [][]string{[]string{"baz", "bat"}}, negativeLabels: [][]string{[]string{"foo", "bar"}}}, false},
-		{"foo", LabelFilter{positiveLabels: [][]string{}, negativeLabels: [][]string{}}, true},
-		{"foo!=bar=baz", LabelFilter{positiveLabels: [][]string{}, negativeLabels: [][]string{}}, true},
-		{"=bar", LabelFilter{positiveLabels: [][]string{}, negativeLabels: [][]string{}}, true},
-	}
-	for idx, c := range cases {
-		filter, err := ParseLabels(c.labelString)
-		if err != nil && !c.errorExected {
-			t.Errorf("[%d] Didn't expect an error parsing labels: %s", idx, err)
-		} else if err == nil && c.errorExected {
-			t.Errorf("[%d] Expected %s to result in an error but got none", idx, c.labelString)
-		} else if !reflect.DeepEqual(filter, c.expectedFilter) {
-			t.Errorf("[%d] parsed label did not result in expected filter: %v, expected: %v", idx, filter, c.expectedFilter)
-		}
-	}
-}
-
-func TestHelmState_applyDefaultsTo(t *testing.T) {
-	type fields struct {
-		BaseChartPath      string
-		Context            string
-		DeprecatedReleases []ReleaseSpec
-		Namespace          string
-		Repositories       []RepositorySpec
-		Releases           []ReleaseSpec
-	}
-	type args struct {
-		spec ReleaseSpec
-	}
-	verify := false
-	specWithNamespace := ReleaseSpec{
-		Chart:     "test/chart",
-		Version:   "0.1",
-		Verify:    &verify,
-		Name:      "test-charts",
-		Namespace: "test-namespace",
-		Values:    nil,
-		SetValues: nil,
-		EnvValues: nil,
-	}
-
-	specWithoutNamespace := specWithNamespace
-	specWithoutNamespace.Namespace = ""
-	specWithNamespaceFromFields := specWithNamespace
-	specWithNamespaceFromFields.Namespace = "test-namespace-field"
-
-	fieldsWithNamespace := fields{
-		BaseChartPath:      ".",
-		Context:            "test_context",
-		DeprecatedReleases: nil,
-		Namespace:          specWithNamespaceFromFields.Namespace,
-		Repositories:       nil,
-		Releases: []ReleaseSpec{
-			specWithNamespace,
-		},
-	}
-
-	fieldsWithoutNamespace := fieldsWithNamespace
-	fieldsWithoutNamespace.Namespace = ""
-
-	tests := []struct {
-		name   string
-		fields fields
-		args   args
-		want   ReleaseSpec
-	}{
-		{
-			name:   "Has a namespace from spec",
-			fields: fieldsWithoutNamespace,
-			args: args{
-				spec: specWithNamespace,
-			},
-			want: specWithNamespace,
-		},
-		{
-			name:   "Has a namespace from flags",
-			fields: fieldsWithoutNamespace,
-			args: args{
-				spec: specWithNamespace,
-			},
-			want: specWithNamespace,
-		},
-		{
-			name:   "Has a namespace from flags and from spec",
-			fields: fieldsWithNamespace,
-			args: args{
-				spec: specWithNamespace,
-			},
-			want: specWithNamespaceFromFields,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			state := &HelmState{
-				basePath:           tt.fields.BaseChartPath,
-				DeprecatedContext:  tt.fields.Context,
-				DeprecatedReleases: tt.fields.DeprecatedReleases,
-				Namespace:          tt.fields.Namespace,
-				Repositories:       tt.fields.Repositories,
-				Releases:           tt.fields.Releases,
-			}
-			if state.applyDefaultsTo(&tt.args.spec); !reflect.DeepEqual(tt.args.spec, tt.want) {
-				t.Errorf("HelmState.applyDefaultsTo() = %v, want %v", tt.args.spec, tt.want)
-			}
-		})
-	}
-}
-
-func TestHelmState_flagsForUpgrade(t *testing.T) {
-	enable := true
-	disable := false
-
-	some := func(v int) *int {
-		return &v
-	}
-
-	tests := []struct {
-		name     string
-		defaults HelmSpec
-		release  *ReleaseSpec
-		want     []string
-	}{
-		{
-			name: "no-options",
-			defaults: HelmSpec{
-				Verify: false,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Verify:    &disable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "verify",
-			defaults: HelmSpec{
-				Verify: false,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Verify:    &enable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--verify",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "verify-from-default",
-			defaults: HelmSpec{
-				Verify: true,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Verify:    &disable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "force",
-			defaults: HelmSpec{
-				Force: false,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Force:     &enable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--force",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "force-from-default",
-			defaults: HelmSpec{
-				Force: true,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Force:     &disable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "recreate-pods",
-			defaults: HelmSpec{
-				RecreatePods: false,
-			},
-			release: &ReleaseSpec{
-				Chart:        "test/chart",
-				Version:      "0.1",
-				RecreatePods: &enable,
-				Name:         "test-charts",
-				Namespace:    "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--recreate-pods",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "recreate-pods-from-default",
-			defaults: HelmSpec{
-				RecreatePods: true,
-			},
-			release: &ReleaseSpec{
-				Chart:        "test/chart",
-				Version:      "0.1",
-				RecreatePods: &disable,
-				Name:         "test-charts",
-				Namespace:    "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "wait",
-			defaults: HelmSpec{
-				Wait: false,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Wait:      &enable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--wait",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "devel",
-			defaults: HelmSpec{
-				Devel: true,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Wait:      &enable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--devel",
-				"--wait",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "devel-release",
-			defaults: HelmSpec{
-				Devel: true,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Devel:     &disable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "wait-from-default",
-			defaults: HelmSpec{
-				Wait: true,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Wait:      &disable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "timeout",
-			defaults: HelmSpec{
-				Timeout: 0,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Timeout:   some(123),
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--timeout", "123",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "timeout-from-default",
-			defaults: HelmSpec{
-				Timeout: 123,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Timeout:   nil,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--timeout", "123",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "atomic",
-			defaults: HelmSpec{
-				Atomic: false,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Atomic:    &enable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--atomic",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "atomic-override-default",
-			defaults: HelmSpec{
-				Atomic: true,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Atomic:    &disable,
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--namespace", "test-namespace",
-			},
-		},
-		{
-			name: "atomic-from-default",
-			defaults: HelmSpec{
-				Atomic: true,
-			},
-			release: &ReleaseSpec{
-				Chart:     "test/chart",
-				Version:   "0.1",
-				Name:      "test-charts",
-				Namespace: "test-namespace",
-			},
-			want: []string{
-				"--version", "0.1",
-				"--atomic",
-				"--namespace", "test-namespace",
-			},
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			state := &HelmState{
-				basePath:          "./",
-				DeprecatedContext: "default",
-				Releases:          []ReleaseSpec{*tt.release},
-				HelmDefaults:      tt.defaults,
-			}
-			helm := helmexec.New(logger, "default")
-			args, err := state.flagsForUpgrade(helm, tt.release)
-			if err != nil {
-				t.Errorf("unexpected error flagsForUpgade: %v", err)
-			}
-			if !reflect.DeepEqual(args, tt.want) {
-				t.Errorf("flagsForUpgrade returned = %v, want %v", args, tt.want)
-			}
-		})
-	}
-}
-
-func Test_isLocalChart(t *testing.T) {
-	type args struct {
-		chart string
-	}
-	tests := []struct {
-		name string
-		args args
-		want bool
-	}{
-		{
-			name: "local chart",
-			args: args{
-				chart: "./",
-			},
-			want: true,
-		},
-		{
-			name: "repo chart",
-			args: args{
-				chart: "stable/genius",
-			},
-			want: false,
-		},
-		{
-			name: "empty",
-			args: args{
-				chart: "",
-			},
-			want: false,
-		},
-		{
-			name: "parent local path",
-			args: args{
-				chart: "../examples",
-			},
-			want: true,
-		},
-		{
-			name: "parent-parent local path",
-			args: args{
-				chart: "../../",
-			},
-			want: true,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := isLocalChart(tt.args.chart); got != tt.want {
-				t.Errorf("pathExists() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}
-
-func Test_normalizeChart(t *testing.T) {
-	type args struct {
-		basePath string
-		chart    string
-	}
-	tests := []struct {
-		name string
-		args args
-		want string
-	}{
-		{
-			name: "construct local chart path",
-			args: args{
-				basePath: "/Users/jane/code/deploy/charts",
-				chart:    "./app",
-			},
-			want: "/Users/jane/code/deploy/charts/app",
-		},
-		{
-			name: "repo path",
-			args: args{
-				basePath: "/Users/jane/code/deploy/charts",
-				chart:    "remote/app",
-			},
-			want: "remote/app",
-		},
-		{
-			name: "construct local chart path, parent dir",
-			args: args{
-				basePath: "/Users/jane/code/deploy/charts",
-				chart:    "../app",
-			},
-			want: "/Users/jane/code/deploy/app",
-		},
-		{
-			name: "too much parent levels",
-			args: args{
-				basePath: "/src",
-				chart:    "../../app",
-			},
-			want: "/app",
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := normalizeChart(tt.args.basePath, tt.args.chart); got != tt.want {
-				t.Errorf("normalizeChart() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}
-
-// mocking helmexec.Interface
-
-type mockHelmExec struct {
-	charts   []string
-	repo     []string
-	releases []mockRelease
-}
-
-type mockRelease struct {
-	name  string
-	flags []string
-}
-
-func (helm *mockHelmExec) UpdateDeps(chart string) error {
-	if strings.Contains(chart, "error") {
-		return errors.New("error")
-	}
-	helm.charts = append(helm.charts, chart)
-	return nil
-}
-
-func (helm *mockHelmExec) BuildDeps(chart string) error {
-	if strings.Contains(chart, "error") {
-		return errors.New("error")
-	}
-	helm.charts = append(helm.charts, chart)
-	return nil
-}
-
-func (helm *mockHelmExec) SetExtraArgs(args ...string) {
-	return
-}
-func (helm *mockHelmExec) SetHelmBinary(bin string) {
-	return
-}
-func (helm *mockHelmExec) AddRepo(name, repository, certfile, keyfile, username, password string) error {
-	helm.repo = []string{name, repository, certfile, keyfile, username, password}
-	return nil
-}
-func (helm *mockHelmExec) UpdateRepo() error {
-	return nil
-}
-func (helm *mockHelmExec) SyncRelease(name, chart string, flags ...string) error {
-	if strings.Contains(name, "error") {
-		return errors.New("error")
-	}
-	helm.releases = append(helm.releases, mockRelease{name: name, flags: flags})
-	helm.charts = append(helm.charts, chart)
-	return nil
-}
-func (helm *mockHelmExec) DiffRelease(name, chart string, flags ...string) error {
-	return nil
-}
-func (helm *mockHelmExec) ReleaseStatus(release string) error {
-	if strings.Contains(release, "error") {
-		return errors.New("error")
-	}
-	helm.releases = append(helm.releases, mockRelease{name: release, flags: []string{}})
-	return nil
-}
-func (helm *mockHelmExec) DeleteRelease(name string, flags ...string) error {
-	return nil
-}
-func (helm *mockHelmExec) DecryptSecret(name string) (string, error) {
-	return "", nil
-}
-func (helm *mockHelmExec) TestRelease(name string, flags ...string) error {
-	if strings.Contains(name, "error") {
-		return errors.New("error")
-	}
-	helm.releases = append(helm.releases, mockRelease{name: name, flags: flags})
-	return nil
-}
-func (helm *mockHelmExec) Fetch(chart string, flags ...string) error {
-	return nil
-}
-func (helm *mockHelmExec) Lint(chart string, flags ...string) error {
-	return nil
-}
-func (helm *mockHelmExec) TemplateRelease(chart string, flags ...string) error {
-	return nil
-}
-func TestHelmState_SyncRepos(t *testing.T) {
-	tests := []struct {
-		name  string
-		repos []RepositorySpec
-		helm  *mockHelmExec
-		envs  map[string]string
-		want  []string
-	}{
-		{
-			name: "normal repository",
-			repos: []RepositorySpec{
-				{
-					Name:     "name",
-					URL:      "http://example.com/",
-					CertFile: "",
-					KeyFile:  "",
-					Username: "",
-					Password: "",
-				},
-			},
-			helm: &mockHelmExec{},
-			want: []string{"name", "http://example.com/", "", "", "", ""},
-		},
-		{
-			name: "repository with cert and key",
-			repos: []RepositorySpec{
-				{
-					Name:     "name",
-					URL:      "http://example.com/",
-					CertFile: "certfile",
-					KeyFile:  "keyfile",
-					Username: "",
-					Password: "",
-				},
-			},
-			helm: &mockHelmExec{},
-			want: []string{"name", "http://example.com/", "certfile", "keyfile", "", ""},
-		},
-		{
-			name: "repository with username and password",
-			repos: []RepositorySpec{
-				{
-					Name:     "name",
-					URL:      "http://example.com/",
-					CertFile: "",
-					KeyFile:  "",
-					Username: "example_user",
-					Password: "example_password",
-				},
-			},
-			helm: &mockHelmExec{},
-			want: []string{"name", "http://example.com/", "", "", "example_user", "example_password"},
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			for k, v := range tt.envs {
-				err := os.Setenv(k, v)
-				if err != nil {
-					t.Error("HelmState.SyncRepos() could not set env var for testing")
-				}
-			}
-			state := &HelmState{
-				Repositories: tt.repos,
-			}
-			if _ = state.SyncRepos(tt.helm); !reflect.DeepEqual(tt.helm.repo, tt.want) {
-				t.Errorf("HelmState.SyncRepos() for [%s] = %v, want %v", tt.name, tt.helm.repo, tt.want)
-			}
-		})
-	}
-}
-
-func TestHelmState_SyncReleases(t *testing.T) {
-	tests := []struct {
-		name         string
-		releases     []ReleaseSpec
-		helm         *mockHelmExec
-		wantReleases []mockRelease
-	}{
-		{
-			name: "normal release",
-			releases: []ReleaseSpec{
-				{
-					Name:  "releaseName",
-					Chart: "foo",
-				},
-			},
-			helm:         &mockHelmExec{},
-			wantReleases: []mockRelease{{"releaseName", []string{}}},
-		},
-		{
-			name: "escaped values",
-			releases: []ReleaseSpec{
-				{
-					Name:  "releaseName",
-					Chart: "foo",
-					SetValues: []SetValue{
-						{
-							Name:  "someList",
-							Value: "a,b,c",
-						},
-						{
-							Name:  "json",
-							Value: "{\"name\": \"john\"}",
-						},
-					},
-				},
-			},
-			helm:         &mockHelmExec{},
-			wantReleases: []mockRelease{{"releaseName", []string{"--set", "someList=a\\,b\\,c", "--set", "json=\\{\"name\": \"john\"\\}"}}},
-		},
-		{
-			name: "set single value from file",
-			releases: []ReleaseSpec{
-				{
-					Name:  "releaseName",
-					Chart: "foo",
-					SetValues: []SetValue{
-						{
-							Name:  "foo",
-							Value: "FOO",
-						},
-						{
-							Name: "bar",
-							File: "path/to/bar",
-						},
-						{
-							Name:  "baz",
-							Value: "BAZ",
-						},
-					},
-				},
-			},
-			helm:         &mockHelmExec{},
-			wantReleases: []mockRelease{{"releaseName", []string{"--set", "foo=FOO", "--set-file", "bar=path/to/bar", "--set", "baz=BAZ"}}},
-		},
-		{
-			name: "set single array value in an array",
-			releases: []ReleaseSpec{
-				{
-					Name:  "releaseName",
-					Chart: "foo",
-					SetValues: []SetValue{
-						{
-							Name: "foo.bar[0]",
-							Values: []string{
-								"A",
-								"B",
-							},
-						},
-					},
-				},
-			},
-			helm:         &mockHelmExec{},
-			wantReleases: []mockRelease{{"releaseName", []string{"--set", "foo.bar[0]={A,B}"}}},
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			state := &HelmState{
-				Releases: tt.releases,
-				logger:   logger,
-			}
-			if _ = state.SyncReleases(tt.helm, []string{}, 1); !reflect.DeepEqual(tt.helm.releases, tt.wantReleases) {
-				t.Errorf("HelmState.SyncReleases() for [%s] = %v, want %v", tt.name, tt.helm.releases, tt.wantReleases)
-			}
-		})
-	}
-}
-
-func TestHelmState_UpdateDeps(t *testing.T) {
-	state := &HelmState{
-		basePath: "/src",
-		Releases: []ReleaseSpec{
-			{
-				Chart: "./..",
-			},
-			{
-				Chart: "../examples",
-			},
-			{
-				Chart: "../../helmfile",
-			},
-			{
-				Chart: "published",
-			},
-			{
-				Chart: "published/deeper",
-			},
-			{
-				Chart: ".error",
-			},
-		},
-	}
-
-	want := []string{"/", "/examples", "/helmfile"}
-	helm := &mockHelmExec{}
-	errs := state.UpdateDeps(helm)
-	if !reflect.DeepEqual(helm.charts, want) {
-		t.Errorf("HelmState.UpdateDeps() = %v, want %v", helm.charts, want)
-	}
-	if len(errs) != 0 {
-		t.Errorf("HelmState.UpdateDeps() - no errors, but got: %v", len(errs))
-	}
-}
-
-func TestHelmState_ReleaseStatuses(t *testing.T) {
-	tests := []struct {
-		name     string
-		releases []ReleaseSpec
-		helm     *mockHelmExec
-		want     []mockRelease
-		wantErr  bool
-	}{
-		{
-			name: "happy path",
-			releases: []ReleaseSpec{
-				{
-					Name: "releaseA",
-				},
-			},
-			helm: &mockHelmExec{},
-			want: []mockRelease{{"releaseA", []string{}}},
-		},
-		{
-			name: "happy path",
-			releases: []ReleaseSpec{
-				{
-					Name: "error",
-				},
-			},
-			helm:    &mockHelmExec{},
-			wantErr: true,
-		},
-	}
-	for _, tt := range tests {
-		i := func(t *testing.T) {
-			state := &HelmState{
-				Releases: tt.releases,
-				logger:   logger,
-			}
-			errs := state.ReleaseStatuses(tt.helm, 1)
-			if (errs != nil) != tt.wantErr {
-				t.Errorf("ReleaseStatuses() for %s error = %v, wantErr %v", tt.name, errs, tt.wantErr)
-				return
-			}
-			if !reflect.DeepEqual(tt.helm.releases, tt.want) {
-				t.Errorf("HelmState.ReleaseStatuses() for [%s] = %v, want %v", tt.name, tt.helm.releases, tt.want)
-			}
-		}
-		t.Run(tt.name, i)
-	}
-}
-
-func TestHelmState_TestReleasesNoCleanUp(t *testing.T) {
-	tests := []struct {
-		name     string
-		cleanup  bool
-		releases []ReleaseSpec
-		helm     *mockHelmExec
-		want     []mockRelease
-		wantErr  bool
-	}{
-		{
-			name: "happy path",
-			releases: []ReleaseSpec{
-				{
-					Name: "releaseA",
-				},
-			},
-			helm: &mockHelmExec{},
-			want: []mockRelease{{"releaseA", []string{"--timeout", "1"}}},
-		},
-		{
-			name:    "do cleanup",
-			cleanup: true,
-			releases: []ReleaseSpec{
-				{
-					Name: "releaseB",
-				},
-			},
-			helm: &mockHelmExec{},
-			want: []mockRelease{{"releaseB", []string{"--cleanup", "--timeout", "1"}}},
-		},
-		{
-			name: "happy path",
-			releases: []ReleaseSpec{
-				{
-					Name: "error",
-				},
-			},
-			helm:    &mockHelmExec{},
-			wantErr: true,
-		},
-	}
-	for _, tt := range tests {
-		i := func(t *testing.T) {
-			state := &HelmState{
-				Releases: tt.releases,
-				logger:   logger,
-			}
-			errs := state.TestReleases(tt.helm, tt.cleanup, 1, 1)
-			if (errs != nil) != tt.wantErr {
-				t.Errorf("TestReleases() for %s error = %v, wantErr %v", tt.name, errs, tt.wantErr)
-				return
-			}
-			if !reflect.DeepEqual(tt.helm.releases, tt.want) {
-				t.Errorf("HelmState.TestReleases() for [%s] = %v, want %v", tt.name, tt.helm.releases, tt.want)
-			}
-		}
-		t.Run(tt.name, i)
-	}
-}
-
-func TestHelmState_NoReleaseMatched(t *testing.T) {
-	releases := []ReleaseSpec{
-		{
-			Name: "releaseA",
-			Labels: map[string]string{
-				"foo": "bar",
-			},
-		},
-	}
-	tests := []struct {
-		name    string
-		labels  string
-		wantErr bool
-	}{
-		{
-			name: "happy path",
-
-			labels:  "foo=bar",
-			wantErr: false,
-		},
-		{
-			name:    "name does not exist",
-			labels:  "name=releaseB",
-			wantErr: false,
-		},
-		{
-			name:    "label does not match anything",
-			labels:  "foo=notbar",
-			wantErr: false,
-		},
-	}
-	for _, tt := range tests {
-		i := func(t *testing.T) {
-			state := &HelmState{
-				Releases: releases,
-				logger:   logger,
-			}
-			errs := state.FilterReleases([]string{tt.labels})
-			if (errs != nil) != tt.wantErr {
-				t.Errorf("ReleaseStatuses() for %s error = %v, wantErr %v", tt.name, errs, tt.wantErr)
-				return
-			}
-		}
-		t.Run(tt.name, i)
-	}
-}

test/integration/environment.values.yaml

@@ -0,0 +1 @@
+mysecret: MYSECRET

test/integration/happypath.yaml

@@ -1,6 +1,13 @@
+environments:
+  default:
+    values:
+      - environment.values.yaml
+---
 repositories:
   - name: stable
     url: https://kubernetes-charts.storage.googleapis.com/
+  - name: incubator
+    url: https://kubernetes-charts-incubator.storage.googleapis.com
 
 helmDefaults:
   kubeContext: minikube
@@ -12,3 +19,9 @@ releases:
     set:
       - name: ingress.enabled
         value: false
+
+  - name: raw
+    chart: incubator/raw
+    values:
+      - mysecret: {{ .Environment.Values.mysecret }}
+      - values.yaml

test/integration/run.sh

@@ -76,10 +76,26 @@ ${helmfile} -f ${dir}/happypath.yaml apply
 code=$?
 [ ${code} -eq 0 ] || fail "unexpected exit code returned by helmfile apply: ${code}"
 
+info "Locking dependencies"
+${helmfile} -f ${dir}/happypath.yaml deps
+code=$?
+[ ${code} -eq 0 ] || fail "unexpected exit code returned by helmfile deps: ${code}"
+
+info "Applying ${dir}/happypath.yaml with locked dependencies"
+${helmfile} -f ${dir}/happypath.yaml apply
+code=$?
+[ ${code} -eq 0 ] || fail "unexpected exit code returned by helmfile apply: ${code}"
+
 info "Deleting release"
 ${helmfile} -f ${dir}/happypath.yaml delete
 ${helm} status --namespace=${test_ns} httpbin &> /dev/null && fail "release should not exist anymore after a delete"
 
+info "Ensuring \"helmfile delete\" doesn't fail when no releases installed"
+${helmfile} -f ${dir}/happypath.yaml delete || fail "\"helmfile delete\" shouldn't fail when there are no installed releases"
+
+info "Ensuring \"helmfile template\" output does contain only YAML docs"
+(${helmfile} -f ${dir}/happypath.yaml template | kubectl apply -f -) || fail "\"helmfile template | kubectl apply -f -\" shouldn't fail"
+
 test_pass "happypath"
 
 

test/integration/values.yaml

@@ -0,0 +1,9 @@
+resources: []
+templates:
+  - |
+    apiVersion: v1
+    kind: Secret
+    metadata:
+      name: common-secret
+    stringData:
+      mykey: {{ .Values.mysecret }}

vendor/github.com/Masterminds/semver/.travis.yml

@@ -1,27 +0,0 @@
-language: go
-
-go:
-  - 1.6.x
-  - 1.7.x
-  - 1.8.x
-  - 1.9.x
-  - 1.10.x
-  - tip
-
-# Setting sudo access to false will let Travis CI use containers rather than
-# VMs to run the tests. For more details see:
-# - http://docs.travis-ci.com/user/workers/container-based-infrastructure/
-# - http://docs.travis-ci.com/user/workers/standard-infrastructure/
-sudo: false
-
-script:
-  - make setup
-  - make test
-
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/06e3328629952dabe3e0
-    on_success: change  # options: [always|never|change] default: always
-    on_failure: always  # options: [always|never|change] default: always
-    on_start: never     # options: [always|never|change] default: always

vendor/github.com/Masterminds/semver/CHANGELOG.md

@@ -1,77 +0,0 @@
-# 1.4.1 (2018-04-02)
-
-## Fixed
-- Fixed #64: Fix pre-release precedence issue (thanks @uudashr)
-
-# 1.4.0 (2017-10-04)
-
-## Changed
-- #61: Update NewVersion to parse ints with a 64bit int size (thanks @zknill)
-
-# 1.3.1 (2017-07-10)
-
-## Fixed
-- Fixed #57: number comparisons in prerelease sometimes inaccurate
-
-# 1.3.0 (2017-05-02)
-
-## Added
-- #45: Added json (un)marshaling support (thanks @mh-cbon)
-- Stability marker. See https://masterminds.github.io/stability/
-
-## Fixed
-- #51: Fix handling of single digit tilde constraint (thanks @dgodd)
-
-## Changed
-- #55: The godoc icon moved from png to svg
-
-# 1.2.3 (2017-04-03)
-
-## Fixed
-- #46: Fixed 0.x.x and 0.0.x in constraints being treated as *
-
-# Release 1.2.2 (2016-12-13)
-
-## Fixed
-- #34: Fixed issue where hyphen range was not working with pre-release parsing.
-
-# Release 1.2.1 (2016-11-28)
-
-## Fixed
-- #24: Fixed edge case issue where constraint "> 0" does not handle "0.0.1-alpha"
-  properly.
-
-# Release 1.2.0 (2016-11-04)
-
-## Added
-- #20: Added MustParse function for versions (thanks @adamreese)
-- #15: Added increment methods on versions (thanks @mh-cbon)
-
-## Fixed
-- Issue #21: Per the SemVer spec (section 9) a pre-release is unstable and
-  might not satisfy the intended compatibility. The change here ignores pre-releases
-  on constraint checks (e.g., ~ or ^) when a pre-release is not part of the
-  constraint. For example, `^1.2.3` will ignore pre-releases while
-  `^1.2.3-alpha` will include them.
-
-# Release 1.1.1 (2016-06-30)
-
-## Changed
-- Issue #9: Speed up version comparison performance (thanks @sdboyer)
-- Issue #8: Added benchmarks (thanks @sdboyer)
-- Updated Go Report Card URL to new location
-- Updated Readme to add code snippet formatting (thanks @mh-cbon)
-- Updating tagging to v[SemVer] structure for compatibility with other tools.
-
-# Release 1.1.0 (2016-03-11)
-
-- Issue #2: Implemented validation to provide reasons a versions failed a
-  constraint.
-
-# Release 1.0.1 (2015-12-31)
-
-- Fixed #1: * constraint failing on valid versions.
-
-# Release 1.0.0 (2015-10-20)
-
-- Initial release

vendor/github.com/Masterminds/semver/LICENSE.txt

@@ -1,20 +0,0 @@
-The Masterminds
-Copyright (C) 2014-2015, Matt Butcher and Matt Farina
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.

vendor/github.com/Masterminds/semver/Makefile

@@ -1,36 +0,0 @@
-.PHONY: setup
-setup:
-	go get -u gopkg.in/alecthomas/gometalinter.v1
-	gometalinter.v1 --install
-
-.PHONY: test
-test: validate lint
-	@echo "==> Running tests"
-	go test -v
-
-.PHONY: validate
-validate:
-	@echo "==> Running static validations"
-	@gometalinter.v1 \
-	  --disable-all \
-	  --enable deadcode \
-	  --severity deadcode:error \
-	  --enable gofmt \
-	  --enable gosimple \
-	  --enable ineffassign \
-	  --enable misspell \
-	  --enable vet \
-	  --tests \
-	  --vendor \
-	  --deadline 60s \
-	  ./... || exit_code=1
-
-.PHONY: lint
-lint:
-	@echo "==> Running linters"
-	@gometalinter.v1 \
-	  --disable-all \
-	  --enable golint \
-	  --vendor \
-	  --deadline 60s \
-	  ./... || :

vendor/github.com/Masterminds/semver/README.md

@@ -1,165 +0,0 @@
-# SemVer
-
-The `semver` package provides the ability to work with [Semantic Versions](http://semver.org) in Go. Specifically it provides the ability to:
-
-* Parse semantic versions
-* Sort semantic versions
-* Check if a semantic version fits within a set of constraints
-* Optionally work with a `v` prefix
-
-[![Stability:
-Active](https://masterminds.github.io/stability/active.svg)](https://masterminds.github.io/stability/active.html)
-[![Build Status](https://travis-ci.org/Masterminds/semver.svg)](https://travis-ci.org/Masterminds/semver) [![Build status](https://ci.appveyor.com/api/projects/status/jfk66lib7hb985k8/branch/master?svg=true&passingText=windows%20build%20passing&failingText=windows%20build%20failing)](https://ci.appveyor.com/project/mattfarina/semver/branch/master) [![GoDoc](https://godoc.org/github.com/Masterminds/semver?status.svg)](https://godoc.org/github.com/Masterminds/semver) [![Go Report Card](https://goreportcard.com/badge/github.com/Masterminds/semver)](https://goreportcard.com/report/github.com/Masterminds/semver)
-
-## Parsing Semantic Versions
-
-To parse a semantic version use the `NewVersion` function. For example,
-
-```go
-    v, err := semver.NewVersion("1.2.3-beta.1+build345")
-```
-
-If there is an error the version wasn't parseable. The version object has methods
-to get the parts of the version, compare it to other versions, convert the
-version back into a string, and get the original string. For more details
-please see the [documentation](https://godoc.org/github.com/Masterminds/semver).
-
-## Sorting Semantic Versions
-
-A set of versions can be sorted using the [`sort`](https://golang.org/pkg/sort/)
-package from the standard library. For example,
-
-```go
-    raw := []string{"1.2.3", "1.0", "1.3", "2", "0.4.2",}
-    vs := make([]*semver.Version, len(raw))
-	for i, r := range raw {
-		v, err := semver.NewVersion(r)
-		if err != nil {
-			t.Errorf("Error parsing version: %s", err)
-		}
-
-		vs[i] = v
-	}
-
-	sort.Sort(semver.Collection(vs))
-```
-
-## Checking Version Constraints
-
-Checking a version against version constraints is one of the most featureful
-parts of the package.
-
-```go
-    c, err := semver.NewConstraint(">= 1.2.3")
-    if err != nil {
-        // Handle constraint not being parseable.
-    }
-
-    v, _ := semver.NewVersion("1.3")
-    if err != nil {
-        // Handle version not being parseable.
-    }
-    // Check if the version meets the constraints. The a variable will be true.
-    a := c.Check(v)
-```
-
-## Basic Comparisons
-
-There are two elements to the comparisons. First, a comparison string is a list
-of comma separated and comparisons. These are then separated by || separated or
-comparisons. For example, `">= 1.2, < 3.0.0 || >= 4.2.3"` is looking for a
-comparison that's greater than or equal to 1.2 and less than 3.0.0 or is
-greater than or equal to 4.2.3.
-
-The basic comparisons are:
-
-* `=`: equal (aliased to no operator)
-* `!=`: not equal
-* `>`: greater than
-* `<`: less than
-* `>=`: greater than or equal to
-* `<=`: less than or equal to
-
-_Note, according to the Semantic Version specification pre-releases may not be
-API compliant with their release counterpart. It says,_
-
-> _A pre-release version indicates that the version is unstable and might not satisfy the intended compatibility requirements as denoted by its associated normal version._
-
-_SemVer comparisons without a pre-release value will skip pre-release versions.
-For example, `>1.2.3` will skip pre-releases when looking at a list of values
-while `>1.2.3-alpha.1` will evaluate pre-releases._
-
-## Hyphen Range Comparisons
-
-There are multiple methods to handle ranges and the first is hyphens ranges.
-These look like:
-
-* `1.2 - 1.4.5` which is equivalent to `>= 1.2, <= 1.4.5`
-* `2.3.4 - 4.5` which is equivalent to `>= 2.3.4, <= 4.5`
-
-## Wildcards In Comparisons
-
-The `x`, `X`, and `*` characters can be used as a wildcard character. This works
-for all comparison operators. When used on the `=` operator it falls
-back to the pack level comparison (see tilde below). For example,
-
-* `1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
-* `>= 1.2.x` is equivalent to `>= 1.2.0`
-* `<= 2.x` is equivalent to `<= 3`
-* `*` is equivalent to `>= 0.0.0`
-
-## Tilde Range Comparisons (Patch)
-
-The tilde (`~`) comparison operator is for patch level ranges when a minor
-version is specified and major level changes when the minor number is missing.
-For example,
-
-* `~1.2.3` is equivalent to `>= 1.2.3, < 1.3.0`
-* `~1` is equivalent to `>= 1, < 2`
-* `~2.3` is equivalent to `>= 2.3, < 2.4`
-* `~1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
-* `~1.x` is equivalent to `>= 1, < 2`
-
-## Caret Range Comparisons (Major)
-
-The caret (`^`) comparison operator is for major level changes. This is useful
-when comparisons of API versions as a major change is API breaking. For example,
-
-* `^1.2.3` is equivalent to `>= 1.2.3, < 2.0.0`
-* `^1.2.x` is equivalent to `>= 1.2.0, < 2.0.0`
-* `^2.3` is equivalent to `>= 2.3, < 3`
-* `^2.x` is equivalent to `>= 2.0.0, < 3`
-
-# Validation
-
-In addition to testing a version against a constraint, a version can be validated
-against a constraint. When validation fails a slice of errors containing why a
-version didn't meet the constraint is returned. For example,
-
-```go
-    c, err := semver.NewConstraint("<= 1.2.3, >= 1.4")
-    if err != nil {
-        // Handle constraint not being parseable.
-    }
-
-    v, _ := semver.NewVersion("1.3")
-    if err != nil {
-        // Handle version not being parseable.
-    }
-
-    // Validate a version against a constraint.
-    a, msgs := c.Validate(v)
-    // a is false
-    for _, m := range msgs {
-        fmt.Println(m)
-
-        // Loops over the errors which would read
-        // "1.3 is greater than 1.2.3"
-        // "1.3 is less than 1.4"
-    }
-```
-
-# Contribute
-
-If you find an issue or want to contribute please file an [issue](https://github.com/Masterminds/semver/issues)
-or [create a pull request](https://github.com/Masterminds/semver/pulls).

vendor/github.com/Masterminds/semver/appveyor.yml

@@ -1,44 +0,0 @@
-version: build-{build}.{branch}
-
-clone_folder: C:\gopath\src\github.com\Masterminds\semver
-shallow_clone: true
-
-environment:
-  GOPATH: C:\gopath
-
-platform:
-  - x64
-
-install:
-  - go version
-  - go env
-  - go get -u gopkg.in/alecthomas/gometalinter.v1
-  - set PATH=%PATH%;%GOPATH%\bin
-  - gometalinter.v1.exe --install
-
-build_script:
-  - go install -v ./...
-
-test_script:
-  - "gometalinter.v1 \
-    --disable-all \
-    --enable deadcode \
-    --severity deadcode:error \
-    --enable gofmt \
-    --enable gosimple \
-    --enable ineffassign \
-    --enable misspell \
-    --enable vet \
-    --tests \
-    --vendor \
-    --deadline 60s \
-    ./... || exit_code=1"
-  - "gometalinter.v1 \
-    --disable-all \
-    --enable golint \
-    --vendor \
-    --deadline 60s \
-    ./... || :"
-  - go test -v
-
-deploy: off

vendor/github.com/Masterminds/semver/collection.go

@@ -1,24 +0,0 @@
-package semver
-
-// Collection is a collection of Version instances and implements the sort
-// interface. See the sort package for more details.
-// https://golang.org/pkg/sort/
-type Collection []*Version
-
-// Len returns the length of a collection. The number of Version instances
-// on the slice.
-func (c Collection) Len() int {
-	return len(c)
-}
-
-// Less is needed for the sort interface to compare two Version objects on the
-// slice. If checks if one is less than the other.
-func (c Collection) Less(i, j int) bool {
-	return c[i].LessThan(c[j])
-}
-
-// Swap is needed for the sort interface to replace the Version objects
-// at two different positions in the slice.
-func (c Collection) Swap(i, j int) {
-	c[i], c[j] = c[j], c[i]
-}

vendor/github.com/Masterminds/semver/constraints.go

@@ -1,426 +0,0 @@
-package semver
-
-import (
-	"errors"
-	"fmt"
-	"regexp"
-	"strings"
-)
-
-// Constraints is one or more constraint that a semantic version can be
-// checked against.
-type Constraints struct {
-	constraints [][]*constraint
-}
-
-// NewConstraint returns a Constraints instance that a Version instance can
-// be checked against. If there is a parse error it will be returned.
-func NewConstraint(c string) (*Constraints, error) {
-
-	// Rewrite - ranges into a comparison operation.
-	c = rewriteRange(c)
-
-	ors := strings.Split(c, "||")
-	or := make([][]*constraint, len(ors))
-	for k, v := range ors {
-		cs := strings.Split(v, ",")
-		result := make([]*constraint, len(cs))
-		for i, s := range cs {
-			pc, err := parseConstraint(s)
-			if err != nil {
-				return nil, err
-			}
-
-			result[i] = pc
-		}
-		or[k] = result
-	}
-
-	o := &Constraints{constraints: or}
-	return o, nil
-}
-
-// Check tests if a version satisfies the constraints.
-func (cs Constraints) Check(v *Version) bool {
-	// loop over the ORs and check the inner ANDs
-	for _, o := range cs.constraints {
-		joy := true
-		for _, c := range o {
-			if !c.check(v) {
-				joy = false
-				break
-			}
-		}
-
-		if joy {
-			return true
-		}
-	}
-
-	return false
-}
-
-// Validate checks if a version satisfies a constraint. If not a slice of
-// reasons for the failure are returned in addition to a bool.
-func (cs Constraints) Validate(v *Version) (bool, []error) {
-	// loop over the ORs and check the inner ANDs
-	var e []error
-	for _, o := range cs.constraints {
-		joy := true
-		for _, c := range o {
-			if !c.check(v) {
-				em := fmt.Errorf(c.msg, v, c.orig)
-				e = append(e, em)
-				joy = false
-			}
-		}
-
-		if joy {
-			return true, []error{}
-		}
-	}
-
-	return false, e
-}
-
-var constraintOps map[string]cfunc
-var constraintMsg map[string]string
-var constraintRegex *regexp.Regexp
-
-func init() {
-	constraintOps = map[string]cfunc{
-		"":   constraintTildeOrEqual,
-		"=":  constraintTildeOrEqual,
-		"!=": constraintNotEqual,
-		">":  constraintGreaterThan,
-		"<":  constraintLessThan,
-		">=": constraintGreaterThanEqual,
-		"=>": constraintGreaterThanEqual,
-		"<=": constraintLessThanEqual,
-		"=<": constraintLessThanEqual,
-		"~":  constraintTilde,
-		"~>": constraintTilde,
-		"^":  constraintCaret,
-	}
-
-	constraintMsg = map[string]string{
-		"":   "%s is not equal to %s",
-		"=":  "%s is not equal to %s",
-		"!=": "%s is equal to %s",
-		">":  "%s is less than or equal to %s",
-		"<":  "%s is greater than or equal to %s",
-		">=": "%s is less than %s",
-		"=>": "%s is less than %s",
-		"<=": "%s is greater than %s",
-		"=<": "%s is greater than %s",
-		"~":  "%s does not have same major and minor version as %s",
-		"~>": "%s does not have same major and minor version as %s",
-		"^":  "%s does not have same major version as %s",
-	}
-
-	ops := make([]string, 0, len(constraintOps))
-	for k := range constraintOps {
-		ops = append(ops, regexp.QuoteMeta(k))
-	}
-
-	constraintRegex = regexp.MustCompile(fmt.Sprintf(
-		`^\s*(%s)\s*(%s)\s*$`,
-		strings.Join(ops, "|"),
-		cvRegex))
-
-	constraintRangeRegex = regexp.MustCompile(fmt.Sprintf(
-		`\s*(%s)\s+-\s+(%s)\s*`,
-		cvRegex, cvRegex))
-}
-
-// An individual constraint
-type constraint struct {
-	// The callback function for the restraint. It performs the logic for
-	// the constraint.
-	function cfunc
-
-	msg string
-
-	// The version used in the constraint check. For example, if a constraint
-	// is '<= 2.0.0' the con a version instance representing 2.0.0.
-	con *Version
-
-	// The original parsed version (e.g., 4.x from != 4.x)
-	orig string
-
-	// When an x is used as part of the version (e.g., 1.x)
-	minorDirty bool
-	dirty      bool
-	patchDirty bool
-}
-
-// Check if a version meets the constraint
-func (c *constraint) check(v *Version) bool {
-	return c.function(v, c)
-}
-
-type cfunc func(v *Version, c *constraint) bool
-
-func parseConstraint(c string) (*constraint, error) {
-	m := constraintRegex.FindStringSubmatch(c)
-	if m == nil {
-		return nil, fmt.Errorf("improper constraint: %s", c)
-	}
-
-	ver := m[2]
-	orig := ver
-	minorDirty := false
-	patchDirty := false
-	dirty := false
-	if isX(m[3]) {
-		ver = "0.0.0"
-		dirty = true
-	} else if isX(strings.TrimPrefix(m[4], ".")) || m[4] == "" {
-		minorDirty = true
-		dirty = true
-		ver = fmt.Sprintf("%s.0.0%s", m[3], m[6])
-	} else if isX(strings.TrimPrefix(m[5], ".")) {
-		dirty = true
-		patchDirty = true
-		ver = fmt.Sprintf("%s%s.0%s", m[3], m[4], m[6])
-	}
-
-	con, err := NewVersion(ver)
-	if err != nil {
-
-		// The constraintRegex should catch any regex parsing errors. So,
-		// we should never get here.
-		return nil, errors.New("constraint Parser Error")
-	}
-
-	cs := &constraint{
-		function:   constraintOps[m[1]],
-		msg:        constraintMsg[m[1]],
-		con:        con,
-		orig:       orig,
-		minorDirty: minorDirty,
-		patchDirty: patchDirty,
-		dirty:      dirty,
-	}
-	return cs, nil
-}
-
-// Constraint functions
-func constraintNotEqual(v *Version, c *constraint) bool {
-	if c.dirty {
-
-		// If there is a pre-release on the version but the constraint isn't looking
-		// for them assume that pre-releases are not compatible. See issue 21 for
-		// more details.
-		if v.Prerelease() != "" && c.con.Prerelease() == "" {
-			return false
-		}
-
-		if c.con.Major() != v.Major() {
-			return true
-		}
-		if c.con.Minor() != v.Minor() && !c.minorDirty {
-			return true
-		} else if c.minorDirty {
-			return false
-		}
-
-		return false
-	}
-
-	return !v.Equal(c.con)
-}
-
-func constraintGreaterThan(v *Version, c *constraint) bool {
-
-	// An edge case the constraint is 0.0.0 and the version is 0.0.0-someprerelease
-	// exists. This that case.
-	if !isNonZero(c.con) && isNonZero(v) {
-		return true
-	}
-
-	// If there is a pre-release on the version but the constraint isn't looking
-	// for them assume that pre-releases are not compatible. See issue 21 for
-	// more details.
-	if v.Prerelease() != "" && c.con.Prerelease() == "" {
-		return false
-	}
-
-	return v.Compare(c.con) == 1
-}
-
-func constraintLessThan(v *Version, c *constraint) bool {
-	// If there is a pre-release on the version but the constraint isn't looking
-	// for them assume that pre-releases are not compatible. See issue 21 for
-	// more details.
-	if v.Prerelease() != "" && c.con.Prerelease() == "" {
-		return false
-	}
-
-	if !c.dirty {
-		return v.Compare(c.con) < 0
-	}
-
-	if v.Major() > c.con.Major() {
-		return false
-	} else if v.Minor() > c.con.Minor() && !c.minorDirty {
-		return false
-	}
-
-	return true
-}
-
-func constraintGreaterThanEqual(v *Version, c *constraint) bool {
-	// An edge case the constraint is 0.0.0 and the version is 0.0.0-someprerelease
-	// exists. This that case.
-	if !isNonZero(c.con) && isNonZero(v) {
-		return true
-	}
-
-	// If there is a pre-release on the version but the constraint isn't looking
-	// for them assume that pre-releases are not compatible. See issue 21 for
-	// more details.
-	if v.Prerelease() != "" && c.con.Prerelease() == "" {
-		return false
-	}
-
-	return v.Compare(c.con) >= 0
-}
-
-func constraintLessThanEqual(v *Version, c *constraint) bool {
-	// If there is a pre-release on the version but the constraint isn't looking
-	// for them assume that pre-releases are not compatible. See issue 21 for
-	// more details.
-	if v.Prerelease() != "" && c.con.Prerelease() == "" {
-		return false
-	}
-
-	if !c.dirty {
-		return v.Compare(c.con) <= 0
-	}
-
-	if v.Major() > c.con.Major() {
-		return false
-	} else if v.Minor() > c.con.Minor() && !c.minorDirty {
-		return false
-	}
-
-	return true
-}
-
-// ~*, ~>* --> >= 0.0.0 (any)
-// ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0, <3.0.0
-// ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0, <2.1.0
-// ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0, <1.3.0
-// ~1.2.3, ~>1.2.3 --> >=1.2.3, <1.3.0
-// ~1.2.0, ~>1.2.0 --> >=1.2.0, <1.3.0
-func constraintTilde(v *Version, c *constraint) bool {
-	// If there is a pre-release on the version but the constraint isn't looking
-	// for them assume that pre-releases are not compatible. See issue 21 for
-	// more details.
-	if v.Prerelease() != "" && c.con.Prerelease() == "" {
-		return false
-	}
-
-	if v.LessThan(c.con) {
-		return false
-	}
-
-	// ~0.0.0 is a special case where all constraints are accepted. It's
-	// equivalent to >= 0.0.0.
-	if c.con.Major() == 0 && c.con.Minor() == 0 && c.con.Patch() == 0 &&
-		!c.minorDirty && !c.patchDirty {
-		return true
-	}
-
-	if v.Major() != c.con.Major() {
-		return false
-	}
-
-	if v.Minor() != c.con.Minor() && !c.minorDirty {
-		return false
-	}
-
-	return true
-}
-
-// When there is a .x (dirty) status it automatically opts in to ~. Otherwise
-// it's a straight =
-func constraintTildeOrEqual(v *Version, c *constraint) bool {
-	// If there is a pre-release on the version but the constraint isn't looking
-	// for them assume that pre-releases are not compatible. See issue 21 for
-	// more details.
-	if v.Prerelease() != "" && c.con.Prerelease() == "" {
-		return false
-	}
-
-	if c.dirty {
-		c.msg = constraintMsg["~"]
-		return constraintTilde(v, c)
-	}
-
-	return v.Equal(c.con)
-}
-
-// ^* --> (any)
-// ^2, ^2.x, ^2.x.x --> >=2.0.0, <3.0.0
-// ^2.0, ^2.0.x --> >=2.0.0, <3.0.0
-// ^1.2, ^1.2.x --> >=1.2.0, <2.0.0
-// ^1.2.3 --> >=1.2.3, <2.0.0
-// ^1.2.0 --> >=1.2.0, <2.0.0
-func constraintCaret(v *Version, c *constraint) bool {
-	// If there is a pre-release on the version but the constraint isn't looking
-	// for them assume that pre-releases are not compatible. See issue 21 for
-	// more details.
-	if v.Prerelease() != "" && c.con.Prerelease() == "" {
-		return false
-	}
-
-	if v.LessThan(c.con) {
-		return false
-	}
-
-	if v.Major() != c.con.Major() {
-		return false
-	}
-
-	return true
-}
-
-var constraintRangeRegex *regexp.Regexp
-
-const cvRegex string = `v?([0-9|x|X|\*]+)(\.[0-9|x|X|\*]+)?(\.[0-9|x|X|\*]+)?` +
-	`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
-	`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?`
-
-func isX(x string) bool {
-	switch x {
-	case "x", "*", "X":
-		return true
-	default:
-		return false
-	}
-}
-
-func rewriteRange(i string) string {
-	m := constraintRangeRegex.FindAllStringSubmatch(i, -1)
-	if m == nil {
-		return i
-	}
-	o := i
-	for _, v := range m {
-		t := fmt.Sprintf(">= %s, <= %s", v[1], v[11])
-		o = strings.Replace(o, v[0], t, 1)
-	}
-
-	return o
-}
-
-// Detect if a version is not zero (0.0.0)
-func isNonZero(v *Version) bool {
-	if v.Major() != 0 || v.Minor() != 0 || v.Patch() != 0 || v.Prerelease() != "" {
-		return true
-	}
-
-	return false
-}

vendor/github.com/Masterminds/semver/doc.go

@@ -1,115 +0,0 @@
-/*
-Package semver provides the ability to work with Semantic Versions (http://semver.org) in Go.
-
-Specifically it provides the ability to:
-
-    * Parse semantic versions
-    * Sort semantic versions
-    * Check if a semantic version fits within a set of constraints
-    * Optionally work with a `v` prefix
-
-Parsing Semantic Versions
-
-To parse a semantic version use the `NewVersion` function. For example,
-
-    v, err := semver.NewVersion("1.2.3-beta.1+build345")
-
-If there is an error the version wasn't parseable. The version object has methods
-to get the parts of the version, compare it to other versions, convert the
-version back into a string, and get the original string. For more details
-please see the documentation at https://godoc.org/github.com/Masterminds/semver.
-
-Sorting Semantic Versions
-
-A set of versions can be sorted using the `sort` package from the standard library.
-For example,
-
-    raw := []string{"1.2.3", "1.0", "1.3", "2", "0.4.2",}
-    vs := make([]*semver.Version, len(raw))
-	for i, r := range raw {
-		v, err := semver.NewVersion(r)
-		if err != nil {
-			t.Errorf("Error parsing version: %s", err)
-		}
-
-		vs[i] = v
-	}
-
-	sort.Sort(semver.Collection(vs))
-
-Checking Version Constraints
-
-Checking a version against version constraints is one of the most featureful
-parts of the package.
-
-    c, err := semver.NewConstraint(">= 1.2.3")
-    if err != nil {
-        // Handle constraint not being parseable.
-    }
-
-    v, _ := semver.NewVersion("1.3")
-    if err != nil {
-        // Handle version not being parseable.
-    }
-    // Check if the version meets the constraints. The a variable will be true.
-    a := c.Check(v)
-
-Basic Comparisons
-
-There are two elements to the comparisons. First, a comparison string is a list
-of comma separated and comparisons. These are then separated by || separated or
-comparisons. For example, `">= 1.2, < 3.0.0 || >= 4.2.3"` is looking for a
-comparison that's greater than or equal to 1.2 and less than 3.0.0 or is
-greater than or equal to 4.2.3.
-
-The basic comparisons are:
-
-    * `=`: equal (aliased to no operator)
-    * `!=`: not equal
-    * `>`: greater than
-    * `<`: less than
-    * `>=`: greater than or equal to
-    * `<=`: less than or equal to
-
-Hyphen Range Comparisons
-
-There are multiple methods to handle ranges and the first is hyphens ranges.
-These look like:
-
-    * `1.2 - 1.4.5` which is equivalent to `>= 1.2, <= 1.4.5`
-    * `2.3.4 - 4.5` which is equivalent to `>= 2.3.4, <= 4.5`
-
-Wildcards In Comparisons
-
-The `x`, `X`, and `*` characters can be used as a wildcard character. This works
-for all comparison operators. When used on the `=` operator it falls
-back to the pack level comparison (see tilde below). For example,
-
-    * `1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
-    * `>= 1.2.x` is equivalent to `>= 1.2.0`
-    * `<= 2.x` is equivalent to `<= 3`
-    * `*` is equivalent to `>= 0.0.0`
-
-Tilde Range Comparisons (Patch)
-
-The tilde (`~`) comparison operator is for patch level ranges when a minor
-version is specified and major level changes when the minor number is missing.
-For example,
-
-    * `~1.2.3` is equivalent to `>= 1.2.3, < 1.3.0`
-    * `~1` is equivalent to `>= 1, < 2`
-    * `~2.3` is equivalent to `>= 2.3, < 2.4`
-    * `~1.2.x` is equivalent to `>= 1.2.0, < 1.3.0`
-    * `~1.x` is equivalent to `>= 1, < 2`
-
-Caret Range Comparisons (Major)
-
-The caret (`^`) comparison operator is for major level changes. This is useful
-when comparisons of API versions as a major change is API breaking. For example,
-
-    * `^1.2.3` is equivalent to `>= 1.2.3, < 2.0.0`
-    * `^1.2.x` is equivalent to `>= 1.2.0, < 2.0.0`
-    * `^2.3` is equivalent to `>= 2.3, < 3`
-    * `^2.x` is equivalent to `>= 2.0.0, < 3`
-*/
-package semver

vendor/github.com/Masterminds/semver/version.go

@@ -1,421 +0,0 @@
-package semver
-
-import (
-	"bytes"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-// The compiled version of the regex created at init() is cached here so it
-// only needs to be created once.
-var versionRegex *regexp.Regexp
-var validPrereleaseRegex *regexp.Regexp
-
-var (
-	// ErrInvalidSemVer is returned a version is found to be invalid when
-	// being parsed.
-	ErrInvalidSemVer = errors.New("Invalid Semantic Version")
-
-	// ErrInvalidMetadata is returned when the metadata is an invalid format
-	ErrInvalidMetadata = errors.New("Invalid Metadata string")
-
-	// ErrInvalidPrerelease is returned when the pre-release is an invalid format
-	ErrInvalidPrerelease = errors.New("Invalid Prerelease string")
-)
-
-// SemVerRegex is the regular expression used to parse a semantic version.
-const SemVerRegex string = `v?([0-9]+)(\.[0-9]+)?(\.[0-9]+)?` +
-	`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
-	`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?`
-
-// ValidPrerelease is the regular expression which validates
-// both prerelease and metadata values.
-const ValidPrerelease string = `^([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*)`
-
-// Version represents a single semantic version.
-type Version struct {
-	major, minor, patch int64
-	pre                 string
-	metadata            string
-	original            string
-}
-
-func init() {
-	versionRegex = regexp.MustCompile("^" + SemVerRegex + "$")
-	validPrereleaseRegex = regexp.MustCompile(ValidPrerelease)
-}
-
-// NewVersion parses a given version and returns an instance of Version or
-// an error if unable to parse the version.
-func NewVersion(v string) (*Version, error) {
-	m := versionRegex.FindStringSubmatch(v)
-	if m == nil {
-		return nil, ErrInvalidSemVer
-	}
-
-	sv := &Version{
-		metadata: m[8],
-		pre:      m[5],
-		original: v,
-	}
-
-	var temp int64
-	temp, err := strconv.ParseInt(m[1], 10, 64)
-	if err != nil {
-		return nil, fmt.Errorf("Error parsing version segment: %s", err)
-	}
-	sv.major = temp
-
-	if m[2] != "" {
-		temp, err = strconv.ParseInt(strings.TrimPrefix(m[2], "."), 10, 64)
-		if err != nil {
-			return nil, fmt.Errorf("Error parsing version segment: %s", err)
-		}
-		sv.minor = temp
-	} else {
-		sv.minor = 0
-	}
-
-	if m[3] != "" {
-		temp, err = strconv.ParseInt(strings.TrimPrefix(m[3], "."), 10, 64)
-		if err != nil {
-			return nil, fmt.Errorf("Error parsing version segment: %s", err)
-		}
-		sv.patch = temp
-	} else {
-		sv.patch = 0
-	}
-
-	return sv, nil
-}
-
-// MustParse parses a given version and panics on error.
-func MustParse(v string) *Version {
-	sv, err := NewVersion(v)
-	if err != nil {
-		panic(err)
-	}
-	return sv
-}
-
-// String converts a Version object to a string.
-// Note, if the original version contained a leading v this version will not.
-// See the Original() method to retrieve the original value. Semantic Versions
-// don't contain a leading v per the spec. Instead it's optional on
-// impelementation.
-func (v *Version) String() string {
-	var buf bytes.Buffer
-
-	fmt.Fprintf(&buf, "%d.%d.%d", v.major, v.minor, v.patch)
-	if v.pre != "" {
-		fmt.Fprintf(&buf, "-%s", v.pre)
-	}
-	if v.metadata != "" {
-		fmt.Fprintf(&buf, "+%s", v.metadata)
-	}
-
-	return buf.String()
-}
-
-// Original returns the original value passed in to be parsed.
-func (v *Version) Original() string {
-	return v.original
-}
-
-// Major returns the major version.
-func (v *Version) Major() int64 {
-	return v.major
-}
-
-// Minor returns the minor version.
-func (v *Version) Minor() int64 {
-	return v.minor
-}
-
-// Patch returns the patch version.
-func (v *Version) Patch() int64 {
-	return v.patch
-}
-
-// Prerelease returns the pre-release version.
-func (v *Version) Prerelease() string {
-	return v.pre
-}
-
-// Metadata returns the metadata on the version.
-func (v *Version) Metadata() string {
-	return v.metadata
-}
-
-// originalVPrefix returns the original 'v' prefix if any.
-func (v *Version) originalVPrefix() string {
-
-	// Note, only lowercase v is supported as a prefix by the parser.
-	if v.original != "" && v.original[:1] == "v" {
-		return v.original[:1]
-	}
-	return ""
-}
-
-// IncPatch produces the next patch version.
-// If the current version does not have prerelease/metadata information,
-// it unsets metadata and prerelease values, increments patch number.
-// If the current version has any of prerelease or metadata information,
-// it unsets both values and keeps curent patch value
-func (v Version) IncPatch() Version {
-	vNext := v
-	// according to http://semver.org/#spec-item-9
-	// Pre-release versions have a lower precedence than the associated normal version.
-	// according to http://semver.org/#spec-item-10
-	// Build metadata SHOULD be ignored when determining version precedence.
-	if v.pre != "" {
-		vNext.metadata = ""
-		vNext.pre = ""
-	} else {
-		vNext.metadata = ""
-		vNext.pre = ""
-		vNext.patch = v.patch + 1
-	}
-	vNext.original = v.originalVPrefix() + "" + vNext.String()
-	return vNext
-}
-
-// IncMinor produces the next minor version.
-// Sets patch to 0.
-// Increments minor number.
-// Unsets metadata.
-// Unsets prerelease status.
-func (v Version) IncMinor() Version {
-	vNext := v
-	vNext.metadata = ""
-	vNext.pre = ""
-	vNext.patch = 0
-	vNext.minor = v.minor + 1
-	vNext.original = v.originalVPrefix() + "" + vNext.String()
-	return vNext
-}
-
-// IncMajor produces the next major version.
-// Sets patch to 0.
-// Sets minor to 0.
-// Increments major number.
-// Unsets metadata.
-// Unsets prerelease status.
-func (v Version) IncMajor() Version {
-	vNext := v
-	vNext.metadata = ""
-	vNext.pre = ""
-	vNext.patch = 0
-	vNext.minor = 0
-	vNext.major = v.major + 1
-	vNext.original = v.originalVPrefix() + "" + vNext.String()
-	return vNext
-}
-
-// SetPrerelease defines the prerelease value.
-// Value must not include the required 'hypen' prefix.
-func (v Version) SetPrerelease(prerelease string) (Version, error) {
-	vNext := v
-	if len(prerelease) > 0 && !validPrereleaseRegex.MatchString(prerelease) {
-		return vNext, ErrInvalidPrerelease
-	}
-	vNext.pre = prerelease
-	vNext.original = v.originalVPrefix() + "" + vNext.String()
-	return vNext, nil
-}
-
-// SetMetadata defines metadata value.
-// Value must not include the required 'plus' prefix.
-func (v Version) SetMetadata(metadata string) (Version, error) {
-	vNext := v
-	if len(metadata) > 0 && !validPrereleaseRegex.MatchString(metadata) {
-		return vNext, ErrInvalidMetadata
-	}
-	vNext.metadata = metadata
-	vNext.original = v.originalVPrefix() + "" + vNext.String()
-	return vNext, nil
-}
-
-// LessThan tests if one version is less than another one.
-func (v *Version) LessThan(o *Version) bool {
-	return v.Compare(o) < 0
-}
-
-// GreaterThan tests if one version is greater than another one.
-func (v *Version) GreaterThan(o *Version) bool {
-	return v.Compare(o) > 0
-}
-
-// Equal tests if two versions are equal to each other.
-// Note, versions can be equal with different metadata since metadata
-// is not considered part of the comparable version.
-func (v *Version) Equal(o *Version) bool {
-	return v.Compare(o) == 0
-}
-
-// Compare compares this version to another one. It returns -1, 0, or 1 if
-// the version smaller, equal, or larger than the other version.
-//
-// Versions are compared by X.Y.Z. Build metadata is ignored. Prerelease is
-// lower than the version without a prerelease.
-func (v *Version) Compare(o *Version) int {
-	// Compare the major, minor, and patch version for differences. If a
-	// difference is found return the comparison.
-	if d := compareSegment(v.Major(), o.Major()); d != 0 {
-		return d
-	}
-	if d := compareSegment(v.Minor(), o.Minor()); d != 0 {
-		return d
-	}
-	if d := compareSegment(v.Patch(), o.Patch()); d != 0 {
-		return d
-	}
-
-	// At this point the major, minor, and patch versions are the same.
-	ps := v.pre
-	po := o.Prerelease()
-
-	if ps == "" && po == "" {
-		return 0
-	}
-	if ps == "" {
-		return 1
-	}
-	if po == "" {
-		return -1
-	}
-
-	return comparePrerelease(ps, po)
-}
-
-// UnmarshalJSON implements JSON.Unmarshaler interface.
-func (v *Version) UnmarshalJSON(b []byte) error {
-	var s string
-	if err := json.Unmarshal(b, &s); err != nil {
-		return err
-	}
-	temp, err := NewVersion(s)
-	if err != nil {
-		return err
-	}
-	v.major = temp.major
-	v.minor = temp.minor
-	v.patch = temp.patch
-	v.pre = temp.pre
-	v.metadata = temp.metadata
-	v.original = temp.original
-	temp = nil
-	return nil
-}
-
-// MarshalJSON implements JSON.Marshaler interface.
-func (v *Version) MarshalJSON() ([]byte, error) {
-	return json.Marshal(v.String())
-}
-
-func compareSegment(v, o int64) int {
-	if v < o {
-		return -1
-	}
-	if v > o {
-		return 1
-	}
-
-	return 0
-}
-
-func comparePrerelease(v, o string) int {
-
-	// split the prelease versions by their part. The separator, per the spec,
-	// is a .
-	sparts := strings.Split(v, ".")
-	oparts := strings.Split(o, ".")
-
-	// Find the longer length of the parts to know how many loop iterations to
-	// go through.
-	slen := len(sparts)
-	olen := len(oparts)
-
-	l := slen
-	if olen > slen {
-		l = olen
-	}
-
-	// Iterate over each part of the prereleases to compare the differences.
-	for i := 0; i < l; i++ {
-		// Since the lentgh of the parts can be different we need to create
-		// a placeholder. This is to avoid out of bounds issues.
-		stemp := ""
-		if i < slen {
-			stemp = sparts[i]
-		}
-
-		otemp := ""
-		if i < olen {
-			otemp = oparts[i]
-		}
-
-		d := comparePrePart(stemp, otemp)
-		if d != 0 {
-			return d
-		}
-	}
-
-	// Reaching here means two versions are of equal value but have different
-	// metadata (the part following a +). They are not identical in string form
-	// but the version comparison finds them to be equal.
-	return 0
-}
-
-func comparePrePart(s, o string) int {
-	// Fastpath if they are equal
-	if s == o {
-		return 0
-	}
-
-	// When s or o are empty we can use the other in an attempt to determine
-	// the response.
-	if s == "" {
-		if o != "" {
-			return -1
-		}
-		return 1
-	}
-
-	if o == "" {
-		if s != "" {
-			return 1
-		}
-		return -1
-	}
-
-	// When comparing strings "99" is greater than "103". To handle
-	// cases like this we need to detect numbers and compare them.
-
-	oi, n1 := strconv.ParseInt(o, 10, 64)
-	si, n2 := strconv.ParseInt(s, 10, 64)
-
-	// The case where both are strings compare the strings
-	if n1 != nil && n2 != nil {
-		if s > o {
-			return 1
-		}
-		return -1
-	} else if n1 != nil {
-		// o is a string and s is a number
-		return -1
-	} else if n2 != nil {
-		// s is a string and o is a number
-		return 1
-	}
-	// Both are numbers
-	if si > oi {
-		return 1
-	}
-	return -1
-
-}

vendor/github.com/Masterminds/sprig/.gitignore

@@ -1,2 +0,0 @@
-vendor/
-/.glide

vendor/github.com/Masterminds/sprig/.travis.yml

@@ -1,23 +0,0 @@
-language: go
-
-go:
-  - 1.9.x
-  - 1.10.x
-  - tip
-
-# Setting sudo access to false will let Travis CI use containers rather than
-# VMs to run the tests. For more details see:
-# - http://docs.travis-ci.com/user/workers/container-based-infrastructure/
-# - http://docs.travis-ci.com/user/workers/standard-infrastructure/
-sudo: false
-
-script:
-  - make setup test
-
-notifications:
-  webhooks:
-    urls:
-      - https://webhooks.gitter.im/e/06e3328629952dabe3e0
-    on_success: change  # options: [always|never|change] default: always
-    on_failure: always  # options: [always|never|change] default: always
-    on_start: never     # options: [always|never|change] default: always

vendor/github.com/Masterminds/sprig/CHANGELOG.md

@@ -1,153 +0,0 @@
-# Changelog
-
-## Release 2.15.0 (2018-04-02)
-
-### Added
-
-- #68 and #69: Add json helpers to docs (thanks @arunvelsriram)
-- #66: Add ternary function (thanks @binoculars)
-- #67: Allow keys function to take multiple dicts (thanks @binoculars)
-- #89: Added sha1sum to crypto function (thanks @benkeil)
-- #81: Allow customizing Root CA that used by genSignedCert (thanks @chenzhiwei)
-- #92: Add travis testing for go 1.10
-- #93: Adding appveyor config for windows testing
-
-### Changed
-
-- #90: Updating to more recent dependencies
-- #73: replace satori/go.uuid with google/uuid (thanks @petterw)
-
-### Fixed
-
-- #76: Fixed documentation typos (thanks @Thiht)
-- Fixed rounding issue on the `ago` function. Note, the removes support for Go 1.8 and older
-
-## Release 2.14.1 (2017-12-01)
-
-### Fixed
-
-- #60: Fix typo in function name documentation (thanks @neil-ca-moore)
-- #61: Removing line with {{ due to blocking github pages genertion
-- #64: Update the list functions to handle int, string, and other slices for compatibility
-
-## Release 2.14.0 (2017-10-06)
-
-This new version of Sprig adds a set of functions for generating and working with SSL certificates.
-
-- `genCA` generates an SSL Certificate Authority
-- `genSelfSignedCert` generates an SSL self-signed certificate
-- `genSignedCert` generates an SSL certificate and key based on a given CA
-
-## Release 2.13.0 (2017-09-18)
-
-This release adds new functions, including:
-
-- `regexMatch`, `regexFindAll`, `regexFind`, `regexReplaceAll`, `regexReplaceAllLiteral`, and `regexSplit` to work with regular expressions
-- `floor`, `ceil`, and `round` math functions
-- `toDate` converts a string to a date
-- `nindent` is just like `indent` but also prepends a new line
-- `ago` returns the time from `time.Now`
-
-### Added
-
-- #40: Added basic regex functionality (thanks @alanquillin)
-- #41: Added ceil floor and round functions (thanks @alanquillin)
-- #48: Added toDate function (thanks @andreynering)
-- #50: Added nindent function (thanks @binoculars)
-- #46: Added ago function (thanks @slayer)
-
-### Changed
-
-- #51: Updated godocs to include new string functions (thanks @curtisallen)
-- #49: Added ability to merge multiple dicts (thanks @binoculars)
-
-## Release 2.12.0 (2017-05-17)
-
-- `snakecase`, `camelcase`, and `shuffle` are three new string functions
-- `fail` allows you to bail out of a template render when conditions are not met
-
-## Release 2.11.0 (2017-05-02)
-
-- Added `toJson` and `toPrettyJson`
-- Added `merge`
-- Refactored documentation
-
-## Release 2.10.0 (2017-03-15)
-
-- Added `semver` and `semverCompare` for Semantic Versions
-- `list` replaces `tuple`
-- Fixed issue with `join`
-- Added `first`, `last`, `intial`, `rest`, `prepend`, `append`, `toString`, `toStrings`, `sortAlpha`, `reverse`, `coalesce`, `pluck`, `pick`, `compact`, `keys`, `omit`, `uniq`, `has`, `without`
-
-## Release 2.9.0 (2017-02-23)
-
-- Added `splitList` to split a list
-- Added crypto functions of `genPrivateKey` and `derivePassword`
-
-## Release 2.8.0 (2016-12-21)
-
-- Added access to several path functions (`base`, `dir`, `clean`, `ext`, and `abs`)
-- Added functions for _mutating_ dictionaries (`set`, `unset`, `hasKey`)
-
-## Release 2.7.0 (2016-12-01)
-
-- Added `sha256sum` to generate a hash of an input
-- Added functions to convert a numeric or string to `int`, `int64`, `float64`
-
-## Release 2.6.0 (2016-10-03)
-
-- Added a `uuidv4` template function for generating UUIDs inside of a template.
-
-## Release 2.5.0 (2016-08-19)
-
-- New `trimSuffix`, `trimPrefix`, `hasSuffix`, and `hasPrefix` functions
-- New aliases have been added for a few functions that didn't follow the naming conventions (`trimAll` and `abbrevBoth`)
-- `trimall` and `abbrevboth` (notice the case) are deprecated and will be removed in 3.0.0
-
-## Release 2.4.0 (2016-08-16)
-
-- Adds two functions: `until` and `untilStep`
-
-## Release 2.3.0 (2016-06-21)
-
-- cat: Concatenate strings with whitespace separators.
-- replace: Replace parts of a string: `replace " " "-" "Me First"` renders "Me-First"
-- plural: Format plurals: `len "foo" | plural "one foo" "many foos"` renders "many foos"
-- indent: Indent blocks of text in a way that is sensitive to "\n" characters.
-
-## Release 2.2.0 (2016-04-21)
-
-- Added a `genPrivateKey` function (Thanks @bacongobbler)
-
-## Release 2.1.0 (2016-03-30)
-
-- `default` now prints the default value when it does not receive a value down the pipeline. It is much safer now to do `{{.Foo | default "bar"}}`.
-- Added accessors for "hermetic" functions. These return only functions that, when given the same input, produce the same output.
-
-## Release 2.0.0 (2016-03-29)
-
-Because we switched from `int` to `int64` as the return value for all integer math functions, the library's major version number has been incremented.
-
-- `min` complements `max` (formerly `biggest`)
-- `empty` indicates that a value is the empty value for its type
-- `tuple` creates a tuple inside of a template: `{{$t := tuple "a", "b" "c"}}`
-- `dict` creates a dictionary inside of a template `{{$d := dict "key1" "val1" "key2" "val2"}}` 
-- Date formatters have been added for HTML dates (as used in `date` input fields)
-- Integer math functions can convert from a number of types, including `string` (via `strconv.ParseInt`).
-
-## Release 1.2.0 (2016-02-01)
-
-- Added quote and squote
-- Added b32enc and b32dec
-- add now takes varargs
-- biggest now takes varargs
-
-## Release 1.1.0 (2015-12-29)
-
-- Added #4: Added contains function. strings.Contains, but with the arguments
-  switched to simplify common pipelines. (thanks krancour)
-- Added Travis-CI testing support
-
-## Release 1.0.0 (2015-12-23)
-
-- Initial release

vendor/github.com/Masterminds/sprig/LICENSE.txt

@@ -1,20 +0,0 @@
-Sprig
-Copyright (C) 2013 Masterminds
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.

vendor/github.com/Masterminds/sprig/Makefile

@@ -1,13 +0,0 @@
-
-HAS_GLIDE := $(shell command -v glide;)
-
-.PHONY: test
-test:
-	go test -v .
-
-.PHONY: setup
-setup:
-ifndef HAS_GLIDE
-	go get -u github.com/Masterminds/glide
-endif
-	glide install

vendor/github.com/Masterminds/sprig/README.md

@@ -1,81 +0,0 @@
-# Sprig: Template functions for Go templates
-[![Stability: Sustained](https://masterminds.github.io/stability/sustained.svg)](https://masterminds.github.io/stability/sustained.html)
-[![Build Status](https://travis-ci.org/Masterminds/sprig.svg?branch=master)](https://travis-ci.org/Masterminds/sprig)
-
-The Go language comes with a [built-in template
-language](http://golang.org/pkg/text/template/), but not
-very many template functions. This library provides a group of commonly
-used template functions.
-
-It is inspired by the template functions found in
-[Twig](http://twig.sensiolabs.org/documentation) and also in various
-JavaScript libraries, such as [underscore.js](http://underscorejs.org/).
-
-## Usage
-
-Template developers can read the [Sprig function documentation](http://masterminds.github.io/sprig/) to
-learn about the >100 template functions available.
-
-For Go developers wishing to include Sprig as a library in their programs,
-API documentation is available [at GoDoc.org](http://godoc.org/github.com/Masterminds/sprig), but
-read on for standard usage.
-
-### Load the Sprig library
-
-To load the Sprig `FuncMap`:
-
-```go
-
-import (
-  "github.com/Masterminds/sprig"
-  "html/template"
-)
-
-// This example illustrates that the FuncMap *must* be set before the
-// templates themselves are loaded.
-tpl := template.Must(
-  template.New("base").Funcs(sprig.FuncMap()).ParseGlob("*.html")
-)
-
-
-```
-
-### Call the functions inside of templates
-
-By convention, all functions are lowercase. This seems to follow the Go
-idiom for template functions (as opposed to template methods, which are
-TitleCase).
-
-
-Example:
-
-```
-{{ "hello!" | upper | repeat 5 }}
-```
-
-Produces:
-
-```
-HELLO!HELLO!HELLO!HELLO!HELLO!
-```
-
-## Principles:
-
-The following principles were used in deciding on which functions to add, and
-determining how to implement them.
-
-- Template functions should be used to build layout. Therefore, the following
-  types of operations are within the domain of template functions:
-  - Formatting
-  - Layout
-  - Simple type conversions
-  - Utilities that assist in handling common formatting and layout needs (e.g. arithmetic)
-- Template functions should not return errors unless there is no way to print
-  a sensible value. For example, converting a string to an integer should not
-  produce an error if conversion fails. Instead, it should display a default
-  value that can be displayed.
-- Simple math is necessary for grid layouts, pagers, and so on. Complex math
-  (anything other than arithmetic) should be done outside of templates.
-- Template functions only deal with the data passed into them. They never retrieve
-  data from a source.
-- Finally, do not override core Go template functions.

vendor/github.com/Masterminds/sprig/appveyor.yml

@@ -1,26 +0,0 @@
-
-version: build-{build}.{branch}
-
-clone_folder: C:\gopath\src\github.com\Masterminds\sprig
-shallow_clone: true
-
-environment:
-  GOPATH: C:\gopath
-
-platform:
-  - x64
-
-install:
-  - go get -u github.com/Masterminds/glide
-  - set PATH=%GOPATH%\bin;%PATH%
-  - go version
-  - go env
-
-build_script:
-  - glide install
-  - go install ./...
-
-test_script:
-  - go test -v
-
-deploy: off

vendor/github.com/Masterminds/sprig/crypto.go

@@ -1,430 +0,0 @@
-package sprig
-
-import (
-	"bytes"
-	"crypto/dsa"
-	"crypto/ecdsa"
-	"crypto/elliptic"
-	"crypto/hmac"
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/sha1"
-	"crypto/sha256"
-	"crypto/x509"
-	"crypto/x509/pkix"
-	"encoding/asn1"
-	"encoding/base64"
-	"encoding/binary"
-	"encoding/hex"
-	"encoding/pem"
-	"errors"
-	"fmt"
-	"math/big"
-	"net"
-	"time"
-
-	"github.com/google/uuid"
-	"golang.org/x/crypto/scrypt"
-)
-
-func sha256sum(input string) string {
-	hash := sha256.Sum256([]byte(input))
-	return hex.EncodeToString(hash[:])
-}
-
-func sha1sum(input string) string {
-	hash := sha1.Sum([]byte(input))
-	return hex.EncodeToString(hash[:])
-}
-
-// uuidv4 provides a safe and secure UUID v4 implementation
-func uuidv4() string {
-	return fmt.Sprintf("%s", uuid.New())
-}
-
-var master_password_seed = "com.lyndir.masterpassword"
-
-var password_type_templates = map[string][][]byte{
-	"maximum": {[]byte("anoxxxxxxxxxxxxxxxxx"), []byte("axxxxxxxxxxxxxxxxxno")},
-	"long": {[]byte("CvcvnoCvcvCvcv"), []byte("CvcvCvcvnoCvcv"), []byte("CvcvCvcvCvcvno"), []byte("CvccnoCvcvCvcv"), []byte("CvccCvcvnoCvcv"),
-		[]byte("CvccCvcvCvcvno"), []byte("CvcvnoCvccCvcv"), []byte("CvcvCvccnoCvcv"), []byte("CvcvCvccCvcvno"), []byte("CvcvnoCvcvCvcc"),
-		[]byte("CvcvCvcvnoCvcc"), []byte("CvcvCvcvCvccno"), []byte("CvccnoCvccCvcv"), []byte("CvccCvccnoCvcv"), []byte("CvccCvccCvcvno"),
-		[]byte("CvcvnoCvccCvcc"), []byte("CvcvCvccnoCvcc"), []byte("CvcvCvccCvccno"), []byte("CvccnoCvcvCvcc"), []byte("CvccCvcvnoCvcc"),
-		[]byte("CvccCvcvCvccno")},
-	"medium": {[]byte("CvcnoCvc"), []byte("CvcCvcno")},
-	"short":  {[]byte("Cvcn")},
-	"basic":  {[]byte("aaanaaan"), []byte("aannaaan"), []byte("aaannaaa")},
-	"pin":    {[]byte("nnnn")},
-}
-
-var template_characters = map[byte]string{
-	'V': "AEIOU",
-	'C': "BCDFGHJKLMNPQRSTVWXYZ",
-	'v': "aeiou",
-	'c': "bcdfghjklmnpqrstvwxyz",
-	'A': "AEIOUBCDFGHJKLMNPQRSTVWXYZ",
-	'a': "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz",
-	'n': "0123456789",
-	'o': "@&%?,=[]_:-+*$#!'^~;()/.",
-	'x': "AEIOUaeiouBCDFGHJKLMNPQRSTVWXYZbcdfghjklmnpqrstvwxyz0123456789!@#$%^&*()",
-}
-
-func derivePassword(counter uint32, password_type, password, user, site string) string {
-	var templates = password_type_templates[password_type]
-	if templates == nil {
-		return fmt.Sprintf("cannot find password template %s", password_type)
-	}
-
-	var buffer bytes.Buffer
-	buffer.WriteString(master_password_seed)
-	binary.Write(&buffer, binary.BigEndian, uint32(len(user)))
-	buffer.WriteString(user)
-
-	salt := buffer.Bytes()
-	key, err := scrypt.Key([]byte(password), salt, 32768, 8, 2, 64)
-	if err != nil {
-		return fmt.Sprintf("failed to derive password: %s", err)
-	}
-
-	buffer.Truncate(len(master_password_seed))
-	binary.Write(&buffer, binary.BigEndian, uint32(len(site)))
-	buffer.WriteString(site)
-	binary.Write(&buffer, binary.BigEndian, counter)
-
-	var hmacv = hmac.New(sha256.New, key)
-	hmacv.Write(buffer.Bytes())
-	var seed = hmacv.Sum(nil)
-	var temp = templates[int(seed[0])%len(templates)]
-
-	buffer.Truncate(0)
-	for i, element := range temp {
-		pass_chars := template_characters[element]
-		pass_char := pass_chars[int(seed[i+1])%len(pass_chars)]
-		buffer.WriteByte(pass_char)
-	}
-
-	return buffer.String()
-}
-
-func generatePrivateKey(typ string) string {
-	var priv interface{}
-	var err error
-	switch typ {
-	case "", "rsa":
-		// good enough for government work
-		priv, err = rsa.GenerateKey(rand.Reader, 4096)
-	case "dsa":
-		key := new(dsa.PrivateKey)
-		// again, good enough for government work
-		if err = dsa.GenerateParameters(&key.Parameters, rand.Reader, dsa.L2048N256); err != nil {
-			return fmt.Sprintf("failed to generate dsa params: %s", err)
-		}
-		err = dsa.GenerateKey(key, rand.Reader)
-		priv = key
-	case "ecdsa":
-		// again, good enough for government work
-		priv, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	default:
-		return "Unknown type " + typ
-	}
-	if err != nil {
-		return fmt.Sprintf("failed to generate private key: %s", err)
-	}
-
-	return string(pem.EncodeToMemory(pemBlockForKey(priv)))
-}
-
-type DSAKeyFormat struct {
-	Version       int
-	P, Q, G, Y, X *big.Int
-}
-
-func pemBlockForKey(priv interface{}) *pem.Block {
-	switch k := priv.(type) {
-	case *rsa.PrivateKey:
-		return &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(k)}
-	case *dsa.PrivateKey:
-		val := DSAKeyFormat{
-			P: k.P, Q: k.Q, G: k.G,
-			Y: k.Y, X: k.X,
-		}
-		bytes, _ := asn1.Marshal(val)
-		return &pem.Block{Type: "DSA PRIVATE KEY", Bytes: bytes}
-	case *ecdsa.PrivateKey:
-		b, _ := x509.MarshalECPrivateKey(k)
-		return &pem.Block{Type: "EC PRIVATE KEY", Bytes: b}
-	default:
-		return nil
-	}
-}
-
-type certificate struct {
-	Cert string
-	Key  string
-}
-
-func buildCustomCertificate(b64cert string, b64key string) (certificate, error) {
-	crt := certificate{}
-
-	cert, err := base64.StdEncoding.DecodeString(b64cert)
-	if err != nil {
-		return crt, errors.New("unable to decode base64 certificate")
-	}
-
-	key, err := base64.StdEncoding.DecodeString(b64key)
-	if err != nil {
-		return crt, errors.New("unable to decode base64 private key")
-	}
-
-	decodedCert, _ := pem.Decode(cert)
-	if decodedCert == nil {
-		return crt, errors.New("unable to decode certificate")
-	}
-	_, err = x509.ParseCertificate(decodedCert.Bytes)
-	if err != nil {
-		return crt, fmt.Errorf(
-			"error parsing certificate: decodedCert.Bytes: %s",
-			err,
-		)
-	}
-
-	decodedKey, _ := pem.Decode(key)
-	if decodedKey == nil {
-		return crt, errors.New("unable to decode key")
-	}
-	_, err = x509.ParsePKCS1PrivateKey(decodedKey.Bytes)
-	if err != nil {
-		return crt, fmt.Errorf(
-			"error parsing prive key: decodedKey.Bytes: %s",
-			err,
-		)
-	}
-
-	crt.Cert = string(cert)
-	crt.Key = string(key)
-
-	return crt, nil
-}
-
-func generateCertificateAuthority(
-	cn string,
-	daysValid int,
-) (certificate, error) {
-	ca := certificate{}
-
-	template, err := getBaseCertTemplate(cn, nil, nil, daysValid)
-	if err != nil {
-		return ca, err
-	}
-	// Override KeyUsage and IsCA
-	template.KeyUsage = x509.KeyUsageKeyEncipherment |
-		x509.KeyUsageDigitalSignature |
-		x509.KeyUsageCertSign
-	template.IsCA = true
-
-	priv, err := rsa.GenerateKey(rand.Reader, 2048)
-	if err != nil {
-		return ca, fmt.Errorf("error generating rsa key: %s", err)
-	}
-
-	ca.Cert, ca.Key, err = getCertAndKey(template, priv, template, priv)
-	if err != nil {
-		return ca, err
-	}
-
-	return ca, nil
-}
-
-func generateSelfSignedCertificate(
-	cn string,
-	ips []interface{},
-	alternateDNS []interface{},
-	daysValid int,
-) (certificate, error) {
-	cert := certificate{}
-
-	template, err := getBaseCertTemplate(cn, ips, alternateDNS, daysValid)
-	if err != nil {
-		return cert, err
-	}
-
-	priv, err := rsa.GenerateKey(rand.Reader, 2048)
-	if err != nil {
-		return cert, fmt.Errorf("error generating rsa key: %s", err)
-	}
-
-	cert.Cert, cert.Key, err = getCertAndKey(template, priv, template, priv)
-	if err != nil {
-		return cert, err
-	}
-
-	return cert, nil
-}
-
-func generateSignedCertificate(
-	cn string,
-	ips []interface{},
-	alternateDNS []interface{},
-	daysValid int,
-	ca certificate,
-) (certificate, error) {
-	cert := certificate{}
-
-	decodedSignerCert, _ := pem.Decode([]byte(ca.Cert))
-	if decodedSignerCert == nil {
-		return cert, errors.New("unable to decode certificate")
-	}
-	signerCert, err := x509.ParseCertificate(decodedSignerCert.Bytes)
-	if err != nil {
-		return cert, fmt.Errorf(
-			"error parsing certificate: decodedSignerCert.Bytes: %s",
-			err,
-		)
-	}
-	decodedSignerKey, _ := pem.Decode([]byte(ca.Key))
-	if decodedSignerKey == nil {
-		return cert, errors.New("unable to decode key")
-	}
-	signerKey, err := x509.ParsePKCS1PrivateKey(decodedSignerKey.Bytes)
-	if err != nil {
-		return cert, fmt.Errorf(
-			"error parsing prive key: decodedSignerKey.Bytes: %s",
-			err,
-		)
-	}
-
-	template, err := getBaseCertTemplate(cn, ips, alternateDNS, daysValid)
-	if err != nil {
-		return cert, err
-	}
-
-	priv, err := rsa.GenerateKey(rand.Reader, 2048)
-	if err != nil {
-		return cert, fmt.Errorf("error generating rsa key: %s", err)
-	}
-
-	cert.Cert, cert.Key, err = getCertAndKey(
-		template,
-		priv,
-		signerCert,
-		signerKey,
-	)
-	if err != nil {
-		return cert, err
-	}
-
-	return cert, nil
-}
-
-func getCertAndKey(
-	template *x509.Certificate,
-	signeeKey *rsa.PrivateKey,
-	parent *x509.Certificate,
-	signingKey *rsa.PrivateKey,
-) (string, string, error) {
-	derBytes, err := x509.CreateCertificate(
-		rand.Reader,
-		template,
-		parent,
-		&signeeKey.PublicKey,
-		signingKey,
-	)
-	if err != nil {
-		return "", "", fmt.Errorf("error creating certificate: %s", err)
-	}
-
-	certBuffer := bytes.Buffer{}
-	if err := pem.Encode(
-		&certBuffer,
-		&pem.Block{Type: "CERTIFICATE", Bytes: derBytes},
-	); err != nil {
-		return "", "", fmt.Errorf("error pem-encoding certificate: %s", err)
-	}
-
-	keyBuffer := bytes.Buffer{}
-	if err := pem.Encode(
-		&keyBuffer,
-		&pem.Block{
-			Type:  "RSA PRIVATE KEY",
-			Bytes: x509.MarshalPKCS1PrivateKey(signeeKey),
-		},
-	); err != nil {
-		return "", "", fmt.Errorf("error pem-encoding key: %s", err)
-	}
-
-	return string(certBuffer.Bytes()), string(keyBuffer.Bytes()), nil
-}
-
-func getBaseCertTemplate(
-	cn string,
-	ips []interface{},
-	alternateDNS []interface{},
-	daysValid int,
-) (*x509.Certificate, error) {
-	ipAddresses, err := getNetIPs(ips)
-	if err != nil {
-		return nil, err
-	}
-	dnsNames, err := getAlternateDNSStrs(alternateDNS)
-	if err != nil {
-		return nil, err
-	}
-	return &x509.Certificate{
-		SerialNumber: big.NewInt(1),
-		Subject: pkix.Name{
-			CommonName: cn,
-		},
-		IPAddresses: ipAddresses,
-		DNSNames:    dnsNames,
-		NotBefore:   time.Now(),
-		NotAfter:    time.Now().Add(time.Hour * 24 * time.Duration(daysValid)),
-		KeyUsage:    x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
-		ExtKeyUsage: []x509.ExtKeyUsage{
-			x509.ExtKeyUsageServerAuth,
-			x509.ExtKeyUsageClientAuth,
-		},
-		BasicConstraintsValid: true,
-	}, nil
-}
-
-func getNetIPs(ips []interface{}) ([]net.IP, error) {
-	if ips == nil {
-		return []net.IP{}, nil
-	}
-	var ipStr string
-	var ok bool
-	var netIP net.IP
-	netIPs := make([]net.IP, len(ips))
-	for i, ip := range ips {
-		ipStr, ok = ip.(string)
-		if !ok {
-			return nil, fmt.Errorf("error parsing ip: %v is not a string", ip)
-		}
-		netIP = net.ParseIP(ipStr)
-		if netIP == nil {
-			return nil, fmt.Errorf("error parsing ip: %s", ipStr)
-		}
-		netIPs[i] = netIP
-	}
-	return netIPs, nil
-}
-
-func getAlternateDNSStrs(alternateDNS []interface{}) ([]string, error) {
-	if alternateDNS == nil {
-		return []string{}, nil
-	}
-	var dnsStr string
-	var ok bool
-	alternateDNSStrs := make([]string, len(alternateDNS))
-	for i, dns := range alternateDNS {
-		dnsStr, ok = dns.(string)
-		if !ok {
-			return nil, fmt.Errorf(
-				"error processing alternate dns name: %v is not a string",
-				dns,
-			)
-		}
-		alternateDNSStrs[i] = dnsStr
-	}
-	return alternateDNSStrs, nil
-}

vendor/github.com/Masterminds/sprig/date.go

@@ -1,76 +0,0 @@
-package sprig
-
-import (
-	"time"
-)
-
-// Given a format and a date, format the date string.
-//
-// Date can be a `time.Time` or an `int, int32, int64`.
-// In the later case, it is treated as seconds since UNIX
-// epoch.
-func date(fmt string, date interface{}) string {
-	return dateInZone(fmt, date, "Local")
-}
-
-func htmlDate(date interface{}) string {
-	return dateInZone("2006-01-02", date, "Local")
-}
-
-func htmlDateInZone(date interface{}, zone string) string {
-	return dateInZone("2006-01-02", date, zone)
-}
-
-func dateInZone(fmt string, date interface{}, zone string) string {
-	var t time.Time
-	switch date := date.(type) {
-	default:
-		t = time.Now()
-	case time.Time:
-		t = date
-	case int64:
-		t = time.Unix(date, 0)
-	case int:
-		t = time.Unix(int64(date), 0)
-	case int32:
-		t = time.Unix(int64(date), 0)
-	}
-
-	loc, err := time.LoadLocation(zone)
-	if err != nil {
-		loc, _ = time.LoadLocation("UTC")
-	}
-
-	return t.In(loc).Format(fmt)
-}
-
-func dateModify(fmt string, date time.Time) time.Time {
-	d, err := time.ParseDuration(fmt)
-	if err != nil {
-		return date
-	}
-	return date.Add(d)
-}
-
-func dateAgo(date interface{}) string {
-	var t time.Time
-
-	switch date := date.(type) {
-	default:
-		t = time.Now()
-	case time.Time:
-		t = date
-	case int64:
-		t = time.Unix(date, 0)
-	case int:
-		t = time.Unix(int64(date), 0)
-	}
-	// Drop resolution to seconds
-	duration := time.Since(t).Round(time.Second)
-	return duration.String()
-}
-
-func toDate(fmt, str string) time.Time {
-	t, _ := time.ParseInLocation(fmt, str, time.Local)
-	return t
-}