// loadPlugins loads plugins into the command list.
//
// This follows a different pattern than the other commands because it has
// to inspect its environment and then add commands to the base command
// as it finds them.
func loadPlugins(baseCmd *cobra.Command, home helmpath.Home, out io.Writer) {
plugdirs := os.Getenv(pluginEnvVar)
if plugdirs == "" {
plugdirs = home.Plugins()
}
found, err := findPlugins(plugdirs)
if err != nil {
fmt.Fprintf(os.Stderr, "failed to load plugins: %s", err)
return
}
// Now we create commands for all of these.
for _, plug := range found {
plug := plug
md := plug.Metadata
if md.Usage == "" {
md.Usage = fmt.Sprintf("the %q plugin", md.Name)
}
c := &cobra.Command{
Use: md.Name,
Short: md.Usage,
Long: md.Description,
RunE: func(cmd *cobra.Command, args []string) error {
k, u := manuallyProcessArgs(args)
if err := cmd.Parent().ParseFlags(k); err != nil {
return err
}
// Call setupEnv before PrepareCommand because
// PrepareCommand uses os.ExpandEnv and expects the
// setupEnv vars.
setupEnv(md.Name, plug.Dir, plugdirs, home)
main, argv := plug.PrepareCommand(u)
prog := exec.Command(main, argv...)
prog.Env = os.Environ()
prog.Stdout = out
prog.Stderr = os.Stderr
if err := prog.Run(); err != nil {
if eerr, ok := err.(*exec.ExitError); ok {
os.Stderr.Write(eerr.Stderr)
return fmt.Errorf("plugin %q exited with error", md.Name)
}
return err
}
return nil
},
// This passes all the flags to the subcommand.
DisableFlagParsing: true,
}
if md.UseTunnel {
c.PersistentPreRunE = func(cmd *cobra.Command, args []string) error {
// Parse the parent flag, but not the local flags.
k, _ := manuallyProcessArgs(args)
if err := c.Parent().ParseFlags(k); err != nil {
return err
}
return setupConnection(cmd, args)
}
}
// TODO: Make sure a command with this name does not already exist.
baseCmd.AddCommand(c)
}
}
// ensureHome checks to see if $HELM_HOME exists
//
// If $HELM_HOME does not exist, this function will create it.
func ensureHome(home helmpath.Home, out io.Writer) error {
configDirectories := []string{home.String(), home.Repository(), home.Cache(), home.LocalRepository(), home.Plugins(), home.Starters()}
for _, p := range configDirectories {
if fi, err := os.Stat(p); err != nil {
fmt.Fprintf(out, "Creating %s \n", p)
if err := os.MkdirAll(p, 0755); err != nil {
return fmt.Errorf("Could not create %s: %s", p, err)
}
} else if !fi.IsDir() {
return fmt.Errorf("%s must be a directory", p)
}
}
repoFile := home.RepositoryFile()
if fi, err := os.Stat(repoFile); err != nil {
fmt.Fprintf(out, "Creating %s \n", repoFile)
r := repo.NewRepoFile()
r.Add(&repo.Entry{
Name: stableRepository,
URL: stableRepositoryURL,
Cache: "stable-index.yaml",
}, &repo.Entry{
Name: localRepository,
URL: localRepositoryURL,
Cache: "local-index.yaml",
})
if err := r.WriteFile(repoFile, 0644); err != nil {
return err
}
cif := home.CacheIndex(stableRepository)
if err := repo.DownloadIndexFile(stableRepository, stableRepositoryURL, cif); err != nil {
fmt.Fprintf(out, "WARNING: Failed to download %s: %s (run 'helm repo update')\n", stableRepository, err)
}
} else if fi.IsDir() {
return fmt.Errorf("%s must be a file, not a directory", repoFile)
}
if r, err := repo.LoadRepositoriesFile(repoFile); err == repo.ErrRepoOutOfDate {
fmt.Fprintln(out, "Updating repository file format...")
if err := r.WriteFile(repoFile, 0644); err != nil {
return err
}
}
localRepoIndexFile := home.LocalRepository(localRepoIndexFilePath)
if fi, err := os.Stat(localRepoIndexFile); err != nil {
fmt.Fprintf(out, "Creating %s \n", localRepoIndexFile)
i := repo.NewIndexFile()
if err := i.WriteFile(localRepoIndexFile, 0644); err != nil {
return err
}
//TODO: take this out and replace with helm update functionality
os.Symlink(localRepoIndexFile, home.CacheIndex("local"))
} else if fi.IsDir() {
return fmt.Errorf("%s must be a file, not a directory", localRepoIndexFile)
}
fmt.Fprintf(out, "$HELM_HOME has been configured at %s.\n", helmHome)
return nil
}
// ensureTestHome creates a home directory like ensureHome, but without remote references.
//
// t is used only for logging.
func ensureTestHome(home helmpath.Home, t *testing.T) error {
configDirectories := []string{home.String(), home.Repository(), home.Cache(), home.LocalRepository(), home.Plugins(), home.Starters()}
for _, p := range configDirectories {
if fi, err := os.Stat(p); err != nil {
if err := os.MkdirAll(p, 0755); err != nil {
return fmt.Errorf("Could not create %s: %s", p, err)
}
} else if !fi.IsDir() {
return fmt.Errorf("%s must be a directory", p)
}
}
repoFile := home.RepositoryFile()
if fi, err := os.Stat(repoFile); err != nil {
rf := repo.NewRepoFile()
rf.Add(&repo.Entry{
Name: "charts",
URL: "http://example.com/foo",
Cache: "charts-index.yaml",
}, &repo.Entry{
Name: "local",
URL: "http://localhost.com:7743/foo",
Cache: "local-index.yaml",
})
if err := rf.WriteFile(repoFile, 0644); err != nil {
return err
}
} else if fi.IsDir() {
return fmt.Errorf("%s must be a file, not a directory", repoFile)
}
if r, err := repo.LoadRepositoriesFile(repoFile); err == repo.ErrRepoOutOfDate {
t.Log("Updating repository file format...")
if err := r.WriteFile(repoFile, 0644); err != nil {
return err
}
}
localRepoIndexFile := home.LocalRepository(localRepoIndexFilePath)
if fi, err := os.Stat(localRepoIndexFile); err != nil {
i := repo.NewIndexFile()
if err := i.WriteFile(localRepoIndexFile, 0644); err != nil {
return err
}
//TODO: take this out and replace with helm update functionality
os.Symlink(localRepoIndexFile, home.CacheIndex("local"))
} else if fi.IsDir() {
return fmt.Errorf("%s must be a file, not a directory", localRepoIndexFile)
}
t.Logf("$HELM_HOME has been configured at %s.\n", helmHome)
return nil
}
