Merge pull request #2880 from rocky-nupt/feat-auto-dep-up

feat(helm): Automatically execute helm dep up when charts are in requirements.yaml but not in charts

cmd/helm/install.go

@@ -119,6 +119,7 @@ type installCmd struct {
 	wait         bool
 	repoURL      string
 	devel        bool
+	depUp        bool
 
 	certFile string
 	keyFile  string
@@ -194,6 +195,7 @@ func newInstallCmd(c helm.Interface, out io.Writer) *cobra.Command {
 	f.StringVar(&inst.keyFile, "key-file", "", "identify HTTPS client using this SSL key file")
 	f.StringVar(&inst.caFile, "ca-file", "", "verify certificates of HTTPS-enabled servers using this CA bundle")
 	f.BoolVar(&inst.devel, "devel", false, "use development versions, too. Equivalent to version '>0.0.0-0'. If --version is set, this is ignored.")
+	f.BoolVar(&inst.depUp, "dep-up", false, "run helm dependency update before installing the chart")
 
 	return cmd
 }
@@ -231,8 +233,23 @@ func (i *installCmd) run() error {
 		// As of Helm 2.4.0, this is treated as a stopping condition:
 		// https://github.com/kubernetes/helm/issues/2209
 		if err := checkDependencies(chartRequested, req); err != nil {
+			if i.depUp {
+				man := &downloader.Manager{
+					Out:        i.out,
+					ChartPath:  i.chartPath,
+					HelmHome:   settings.Home,
+					Keyring:    defaultKeyring(),
+					SkipUpdate: false,
+					Getters:    getter.All(settings),
+				}
+				if err := man.Update(); err != nil {
+					return prettyError(err)
+				}
+			} else {
 				return prettyError(err)
 			}
+
+		}
 	} else if err != chartutil.ErrRequirementsNotFound {
 		return fmt.Errorf("cannot load requirements: %v", err)
 	}

docs/helm/helm_install.md

@@ -70,6 +70,7 @@ helm install [CHART]
 ```
       --ca-file string         verify certificates of HTTPS-enabled servers using this CA bundle
       --cert-file string       identify HTTPS client using this SSL certificate file
+      --dep-up                 run helm dependency update before installing the chart
       --devel                  use development versions, too. Equivalent to version '>0.0.0-0'. If --version is set, this is ignored.
       --dry-run                simulate an install
       --key-file string        identify HTTPS client using this SSL key file

docs/man/man1/helm_install.1

@@ -122,6 +122,10 @@ charts in a repository, use 'helm search'.
 \fB\-\-cert\-file\fP=""
     identify HTTPS client using this SSL certificate file
 
+.PP
+\fB\-\-dep\-up\fP[=false]
+    run helm dependency update before installing the chart.
+
 .PP
 \fB\-\-devel\fP[=false]
     use development versions, too. Equivalent to version '>0.0.0\-a'. If \-\-version is set, this is ignored.
@@ -236,4 +240,4 @@ charts in a repository, use 'helm search'.
 
 .SH HISTORY
 .PP
-19\-May\-2017 Auto generated by spf13/cobra
+31\-Oct\-2017 Auto generated by spf13/cobra