Merge pull request #1063 from devth/feat/value-merging

Include values from both --set and --values when specified on install

cmd/helm/install.go

@@ -147,13 +147,28 @@ func (i *installCmd) run() error {
 }
 
 func (i *installCmd) vals() ([]byte, error) {
+	var buffer bytes.Buffer
+
+	// User specified a values file via -f/--values
+	if i.valuesFile != "" {
+		bytes, err := ioutil.ReadFile(i.valuesFile)
+		if err != nil {
+			return []byte{}, err
+		}
+		buffer.Write(bytes)
+	}
+
+	// User specified value pairs via --set
+	// These override any values in the specified file
 	if len(i.values.pairs) > 0 {
-		return i.values.yaml()
+		bytes, err := i.values.yaml()
+		if err != nil {
+			return []byte{}, err
 		}
-	if i.valuesFile == "" {
-		return []byte{}, nil
+		buffer.Write(bytes)
 	}
-	return ioutil.ReadFile(i.valuesFile)
+
+	return buffer.Bytes(), nil
 }
 
 func (i *installCmd) printRelease(rel *release.Release) {

cmd/helm/install_test.go

@@ -121,6 +121,23 @@ sailor: sinbad
 	if vobj.String() != y {
 		t.Errorf("Expected String() to be \n%s\nGot\n%s\n", y, out)
 	}
+
+	// Combined case, overriding a property
+	vals["sailor"] = "pisti"
+	updated_yaml := `good: true
+port:
+  destination: basrah
+  source: baghdad
+sailor: pisti
+`
+	new_out, err := vobj.yaml()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if string(new_out) != updated_yaml {
+		t.Errorf("Expected YAML to be \n%s\nGot\n%s\n", updated_yaml, new_out)
+	}
+
 }
 
 type nameTemplateTestCase struct {