352 lines
8.1 KiB
Go
352 lines
8.1 KiB
Go
package main
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import (
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"fmt"
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"io"
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"log"
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"os"
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"os/signal"
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"strings"
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"syscall"
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"github.com/roboll/helmfile/helmexec"
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"github.com/roboll/helmfile/state"
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"github.com/urfave/cli"
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)
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const (
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DefaultHelmfile = "helmfile.yaml"
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DeprecatedHelmfile = "charts.yaml"
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)
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var Version string
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func main() {
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app := cli.NewApp()
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app.Name = "helmfile"
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app.Usage = ""
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app.Version = Version
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app.Flags = []cli.Flag{
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cli.StringFlag{
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Name: "file, f",
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Value: DefaultHelmfile,
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Usage: "load config from `FILE`",
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},
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cli.BoolFlag{
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Name: "quiet, q",
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Usage: "silence output",
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},
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cli.StringFlag{
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Name: "kube-context",
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Usage: "Set kubectl context. Uses current context by default",
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},
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cli.StringFlag{
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Name: "namespace, n",
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Usage: "Set namespace. Uses the namespace set in the context by default",
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},
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cli.StringSliceFlag{
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Name: "selector, l",
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Usage: `Only run using the releases that match labels. Labels can take the form of foo=bar or foo!=bar.
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A release must match all labels in a group in order to be used. Multiple groups can be specified at once.
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--selector tier=frontend,tier!=proxy --selector tier=backend. Will match all frontend, non-proxy releases AND all backend releases.
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The name of a release can be used as a label. --selector name=myrelease`,
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},
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}
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app.Commands = []cli.Command{
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{
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Name: "repos",
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Usage: "sync repositories from state file (helm repo add && helm repo update)",
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "args",
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Value: "",
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Usage: "pass args to helm exec",
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},
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},
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Action: func(c *cli.Context) error {
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state, helm, err := before(c)
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if err != nil {
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return err
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}
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args := c.String("args")
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if len(args) > 0 {
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helm.SetExtraArgs(strings.Split(args, " ")...)
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}
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errs := state.SyncRepos(helm)
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return clean(state, errs)
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},
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},
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{
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Name: "charts",
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Usage: "sync charts from state file (helm upgrade --install)",
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "args",
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Value: "",
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Usage: "pass args to helm exec",
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},
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cli.StringSliceFlag{
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Name: "values",
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Usage: "additional value files to be merged into the command",
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},
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cli.IntFlag{
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Name: "concurrency",
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Value: 0,
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Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
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},
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},
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Action: func(c *cli.Context) error {
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state, helm, err := before(c)
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if err != nil {
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return err
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}
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args := c.String("args")
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if len(args) > 0 {
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helm.SetExtraArgs(strings.Split(args, " ")...)
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}
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values := c.StringSlice("values")
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workers := c.Int("concurrency")
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errs := state.SyncReleases(helm, values, workers)
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return clean(state, errs)
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},
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},
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{
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Name: "diff",
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Usage: "diff charts from state file against env (helm diff)",
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Flags: []cli.Flag{
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cli.StringFlag{
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Name: "args",
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Value: "",
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Usage: "pass args to helm exec",
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},
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cli.StringSliceFlag{
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Name: "values",
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Usage: "additional value files to be merged into the command",
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},
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cli.BoolFlag{
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Name: "sync-repos",
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Usage: "enable a repo sync prior to diffing",
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},
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cli.IntFlag{
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Name: "concurrency",
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Value: 0,
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Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
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},
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},
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Action: func(c *cli.Context) error {
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state, helm, err := before(c)
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if err != nil {
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return err
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}
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args := c.String("args")
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if len(args) > 0 {
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helm.SetExtraArgs(strings.Split(args, " ")...)
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}
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if c.Bool("sync-repos") {
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if errs := state.SyncRepos(helm); errs != nil && len(errs) > 0 {
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for _, err := range errs {
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fmt.Printf("err: %s\n", err.Error())
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}
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os.Exit(1)
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}
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}
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values := c.StringSlice("values")
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workers := c.Int("concurrency")
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errs := state.DiffReleases(helm, values, workers)
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return clean(state, errs)
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},
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},
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{
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Name: "sync",
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Usage: "sync all resources from state file (repos, charts and local chart deps)",
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Flags: []cli.Flag{
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cli.StringSliceFlag{
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Name: "values",
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Usage: "additional value files to be merged into the command",
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},
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cli.IntFlag{
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Name: "concurrency",
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Value: 0,
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Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
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},
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cli.StringFlag{
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Name: "args",
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Value: "",
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Usage: "pass args to helm exec",
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},
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},
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Action: func(c *cli.Context) error {
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state, helm, err := before(c)
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if err != nil {
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return err
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}
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if errs := state.SyncRepos(helm); errs != nil && len(errs) > 0 {
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for _, err := range errs {
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fmt.Printf("err: %s\n", err.Error())
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}
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os.Exit(1)
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}
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if errs := state.UpdateDeps(helm); errs != nil && len(errs) > 0 {
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for _, err := range errs {
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fmt.Printf("err: %s\n", err.Error())
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}
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os.Exit(1)
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}
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args := c.String("args")
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if len(args) > 0 {
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helm.SetExtraArgs(strings.Split(args, " ")...)
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}
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values := c.StringSlice("values")
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workers := c.Int("concurrency")
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errs := state.SyncReleases(helm, values, workers)
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return clean(state, errs)
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},
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},
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{
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Name: "status",
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Usage: "retrieve status of releases in state file",
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Flags: []cli.Flag{
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cli.IntFlag{
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Name: "concurrency",
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Value: 0,
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Usage: "maximum number of concurrent helm processes to run, 0 is unlimited",
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},
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cli.StringFlag{
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Name: "args",
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Value: "",
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Usage: "pass args to helm exec",
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},
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},
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Action: func(c *cli.Context) error {
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state, helm, err := before(c)
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if err != nil {
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return err
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}
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workers := c.Int("concurrency")
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args := c.String("args")
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if len(args) > 0 {
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helm.SetExtraArgs(strings.Split(args, " ")...)
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}
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errs := state.ReleaseStatuses(helm, workers)
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return clean(state, errs)
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},
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},
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{
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Name: "delete",
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Usage: "delete charts from state file (helm delete)",
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Action: func(c *cli.Context) error {
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state, helm, err := before(c)
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if err != nil {
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return err
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}
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errs := state.DeleteReleases(helm)
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return clean(state, errs)
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},
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},
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}
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err := app.Run(os.Args)
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if err != nil {
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log.Printf("err: %s", err.Error())
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os.Exit(1)
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}
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}
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func before(c *cli.Context) (*state.HelmState, helmexec.Interface, error) {
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file := c.GlobalString("file")
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quiet := c.GlobalBool("quiet")
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kubeContext := c.GlobalString("kube-context")
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namespace := c.GlobalString("namespace")
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labels := c.GlobalStringSlice("selector")
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st, err := state.ReadFromFile(file)
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if err != nil {
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if strings.Contains(err.Error(), fmt.Sprintf("open %s:", DefaultHelmfile)) {
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var fallbackErr error
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st, fallbackErr = state.ReadFromFile(DeprecatedHelmfile)
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if fallbackErr != nil {
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return nil, nil, fmt.Errorf("failed to read %s and %s: %v", file, DeprecatedHelmfile, err)
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}
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log.Printf("warn: charts.yaml is loaded: charts.yaml is deprecated in favor of helmfile.yaml. See https://github.com/roboll/helmfile/issues/25 for more information")
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} else {
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return nil, nil, fmt.Errorf("failed to read %s: %v", file, err)
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}
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}
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if st.Context != "" {
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if kubeContext != "" {
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log.Printf("err: Cannot use option --kube-context and set attribute context.")
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os.Exit(1)
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}
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kubeContext = st.Context
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}
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if namespace != "" {
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if st.Namespace != "" {
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log.Printf("err: Cannot use option --namespace and set attribute namespace.")
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os.Exit(1)
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}
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st.Namespace = namespace
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}
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if len(labels) > 0 {
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err = st.FilterReleases(labels)
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if err != nil {
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log.Print(err)
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os.Exit(1)
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}
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}
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var writer io.Writer
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if !quiet {
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writer = os.Stdout
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}
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sigs := make(chan os.Signal, 1)
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signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
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go func() {
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sig := <-sigs
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errs := []error{fmt.Errorf("Received [%s] to shutdown ", sig)}
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clean(st, errs)
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}()
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return st, helmexec.New(writer, kubeContext), nil
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}
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func clean(state *state.HelmState, errs []error) error {
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if errs == nil {
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errs = []error{}
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}
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cleanErrs := state.Clean()
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if cleanErrs != nil {
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errs = append(errs, cleanErrs...)
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}
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if errs != nil && len(errs) > 0 {
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for _, err := range errs {
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fmt.Printf("err: %s\n", err.Error())
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}
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os.Exit(1)
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}
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return nil
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}
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