fix(chart): Chart.yaml now has an apiVersion field.

This is to future-proof charts, and also be consistent with repo and
index YAML files.

Closes #1264

_proto/hapi/chart/metadata.proto

@@ -61,4 +61,7 @@ message Metadata {
 
 	// The URL to an icon file.
 	string icon = 9;
+
+	// The API Version of this chart.
+	string apiVersion = 10;
 }

cmd/helm/create.go

@@ -85,6 +85,7 @@ func (c *createCmd) run() error {
 		Name:        chartname,
 		Description: "A Helm chart for Kubernetes",
 		Version:     "0.1.0",
+		ApiVersion:  chartutil.ApiVersionV1,
 	}
 
 	_, err := chartutil.Create(cfile, filepath.Dir(c.name))

cmd/helm/create_test.go

@@ -0,0 +1,71 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package main
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"k8s.io/helm/pkg/chartutil"
+)
+
+func TestCreateCmd(t *testing.T) {
+	cname := "testchart"
+	// Make a temp dir
+	tdir, err := ioutil.TempDir("", "helm-create-")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer os.Remove(tdir)
+
+	// CD into it
+	pwd, err := os.Getwd()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if err := os.Chdir(tdir); err != nil {
+		t.Fatal(err)
+	}
+	defer os.Chdir(pwd)
+
+	// Run a create
+	cmd := newCreateCmd(os.Stdout)
+	if err := cmd.RunE(cmd, []string{cname}); err != nil {
+		t.Errorf("Failed to run create: %s", err)
+		return
+	}
+
+	// Test that the chart is there
+	if fi, err := os.Stat(cname); err != nil {
+		t.Fatalf("no chart directory: %s", err)
+	} else if !fi.IsDir() {
+		t.Fatalf("chart is not directory")
+	}
+
+	c, err := chartutil.LoadDir(cname)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if c.Metadata.Name != cname {
+		t.Errorf("Expected %q name, got %q", cname, c.Metadata.Name)
+	}
+	if c.Metadata.ApiVersion != chartutil.ApiVersionV1 {
+		t.Errorf("Wrong API version: %q", c.Metadata.ApiVersion)
+	}
+}

pkg/chartutil/chartfile.go

@@ -24,6 +24,9 @@ import (
 	"k8s.io/helm/pkg/proto/hapi/chart"
 )
 
+// APIVersionV1 is the API version number for version 1.
+const ApiVersionV1 = "v1"
+
 // UnmarshalChartfile takes raw Chart.yaml data and unmarshals it.
 func UnmarshalChartfile(data []byte) (*chart.Metadata, error) {
 	y := &chart.Metadata{}

pkg/chartutil/chartfile_test.go

@@ -39,6 +39,11 @@ func verifyChartfile(t *testing.T, f *chart.Metadata) {
 		t.Fatal("Failed verifyChartfile because f is nil")
 	}
 
+	// Api instead of API because it was generated via protobuf.
+	if f.ApiVersion != ApiVersionV1 {
+		t.Errorf("Expected API Version %q, got %q", ApiVersionV1, f.ApiVersion)
+	}
+
 	if f.Name != "frobnitz" {
 		t.Errorf("Expected frobnitz, got %s", f.Name)
 	}

pkg/chartutil/testdata/chartfiletest.yaml

@@ -1,3 +1,4 @@
+apiVersion: v1
 name: frobnitz
 description: This is a frobnitz.
 version: "1.2.3"

pkg/chartutil/testdata/frobnitz/Chart.yaml

@@ -1,3 +1,4 @@
+apiVersion: v1
 name: frobnitz
 description: This is a frobnitz.
 version: "1.2.3"

pkg/proto/hapi/chart/metadata.pb.go

@@ -69,6 +69,8 @@ type Metadata struct {
 	Engine string `protobuf:"bytes,8,opt,name=engine" json:"engine,omitempty"`
 	// The URL to an icon file.
 	Icon string `protobuf:"bytes,9,opt,name=icon" json:"icon,omitempty"`
+	// The API Version of this chart.
+	ApiVersion string `protobuf:"bytes,10,opt,name=apiVersion" json:"apiVersion,omitempty"`
 }
 
 func (m *Metadata) Reset()                    { *m = Metadata{} }
@@ -92,23 +94,23 @@ func init() {
 func init() { proto.RegisterFile("hapi/chart/metadata.proto", fileDescriptor2) }
 
 var fileDescriptor2 = []byte{
-	// 275 bytes of a gzipped FileDescriptorProto
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-	0x01, 0x00, 0x00,
+	// 287 bytes of a gzipped FileDescriptorProto
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 }