Adds the `--detailed-exitcode` to the `helmfile diff` command to return `1` on failure, and `2` when no error but diff is seen.
This feature requires the latest `helm-diff` containing https://github.com/databus23/helm-diff/pull/78, and `helm` containing https://github.com/helm/helm/pull/4367.
This is verified to work by manually running commands like the followings:
```bash
./helmfile --helm-binary helm211dev -f ./examples/helmfile.d diff --detailed-exitcode; echo $?
./helmfile --helm-binary helm211dev -f ./examples/helmfile.d diff; echo $?
```
Note that, in above example commands, `helm211dev` is a custom `helm` binary that is built from helm's master branch containing [the necessary enhancement to allow propagate non-zero plugin exit code](https://github.com/helm/helm/pull/4367).
Fixes#187
Changelog:
* fix: `helmfile -f dir/ -l k=v sync` fails on first helmfile w/ no match
* fix(ux): present the filename if the selector did not match any releases
```console
$ helmfile -f helmfile.d/ -l foo=bar sync
2018/07/12 23:37:29 specified selector did not match any releases in helmfile.d/00-backend.yaml
2018/07/12 23:37:29 specified selector did not match any releases in helmfile.d/01-frontend.yaml
2018/07/12 23:37:29 err: specified selector did not match any releases in any helmfile
```
Add tillerNamespace and kubeContext to helmDefaults. Also add merging of args capability.
People can start adding additional fields under helmDefaults on top of this. The additional fields are merged to args as long as they are implemented using the framework introduced by this commit.
Changelog:
* adding merging for helm defaults args and --args, adding tillernamspace, kubecontext to helmdefaults, adding getargs to lint command
* adding docs for helmdefaults
* checking if empty default values
Closes#93
Summary of changes:
- Adds the [uber-go-/zap](https://github.com/uber-go/zap) library for leveled logging (69040996e0bcbd2f211d0d8d576147027e928e3b)
- A new CLI arg `--log-level` which can take the values `debug` `info` `warn` `error` `fatal` `panic`. The default is `info`, and the existing `--quiet` flag is treated as `--log-level warn`
- All `helm.exec` calls are preceded by a one-line summary. The current information on the full helm command line arguments `exec: helm exec ... ` is only output at `debug` level. This means sensitive command line arguments which may include passwords and `--set` arguments should be hidden by default.
`helm` may not be version compatible. Add an option to specify an alternative `helm` command on runtime, possibly according to the version of tiller running on your cluster.
The use case is to have a list of helmfile releases version controlled together with all settings and have a CI pipeline that will lint all releases with settings before running sync. The new functionality was mostly copy pasted from the Diff implementation with some extra handling for fetching remote charts.
Notes:
* Added release name to chart path to avoid potential race condition when fetching the chart
Yusuke KUOKA
Chad Horohoe
Erik Osterman
Dan O'Brien
Maciej Bryński
rmartinez3
Simon Li
hori-ryota
Scukerman
amnk
Johan Lyheden
Cedric Meury
Dan Wendorf