add --set-file support

Author: ctiml

cmd/helm.go

@@ -170,6 +170,18 @@ func (d *diffCmd) vals() ([]byte, error) {
 		}
 	}
 
+	// User specified a value via --set-file
+	for _, value := range d.fileValues {
+		reader := func(rs []rune) (interface{}, error) {
+			bytes, err := ioutil.ReadFile(string(rs))
+			return string(bytes), err
+		}
+
+		if err := strvals.ParseIntoFile(value, base, reader); err != nil {
+			return []byte{}, fmt.Errorf("failed parsing --set-file data: %s", err)
+		}
+	}
+
 	return yaml.Marshal(base)
 }
 

cmd/upgrade.go

@@ -24,6 +24,7 @@ type diffCmd struct {
 	valueFiles       valueFiles
 	values           []string
 	stringValues     []string
+	fileValues       []string
 	reuseValues      bool
 	resetValues      bool
 	allowUnreleased  bool
@@ -77,6 +78,7 @@ func newChartCommand() *cobra.Command {
 	f.VarP(&diff.valueFiles, "values", "f", "specify values in a YAML file (can specify multiple)")
 	f.StringArrayVar(&diff.values, "set", []string{}, "set values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)")
 	f.StringArrayVar(&diff.stringValues, "set-string", []string{}, "set STRING values on the command line (can specify multiple or separate values with commas: key1=val1,key2=val2)")
+	f.StringArrayVar(&diff.fileValues, "set-file", []string{}, "set values from respective files specified via the command line (can specify multiple or separate values with commas: key1=path1,key2=path2)")
 	f.BoolVar(&diff.reuseValues, "reuse-values", false, "reuse the last release's values and merge in any new values")
 	f.BoolVar(&diff.resetValues, "reset-values", false, "reset the values to the ones built into the chart and merge in any new values")
 	f.BoolVar(&diff.allowUnreleased, "allow-unreleased", false, "enables diffing of releases that are not yet deployed via Helm")