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Merge pull request #3357 from proppy/fix-podex
contrib/podex: fix ordering and manifest generation
This commit is contained in:
Satnam Singh
commit
c29d89a534
@ -32,22 +32,29 @@ import (
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"encoding/json"
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"flag"
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"fmt"
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"io/ioutil"
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"io"
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"log"
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"net/http"
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"os"
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"strconv"
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"strings"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api/v1beta1"
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"github.com/ghodss/yaml"
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goyaml "gopkg.in/v2/yaml"
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)
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const usage = "usage: podex [-json|-yaml] [-id PODNAME] IMAGES"
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const usage = "podex [-format=yaml|json] [-type=pod|container] [-id NAME] IMAGES..."
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var generateJSON = flag.Bool("json", false, "generate json manifest")
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var generateYAML = flag.Bool("yaml", false, "generate yaml manifest")
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var podName = flag.String("id", "", "set pod name")
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var manifestFormat = flag.String("format", "yaml", "manifest format to output, `yaml` or `json`")
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var manifestType = flag.String("type", "pod", "manifest type to output, `pod` or `container`")
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var manifestName = flag.String("name", "", "manifest name, default to image base name")
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func init() {
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flag.Usage = func() {
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fmt.Fprintf(os.Stderr, "Usage: %s\n", usage)
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flag.PrintDefaults()
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}
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}
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type image struct {
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Host string
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@ -60,28 +67,25 @@ func main() {
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flag.Parse()
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if flag.NArg() < 1 {
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log.Fatal(usage)
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flag.Usage()
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log.Fatal("pod: missing image argument")
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}
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if *podName == "" {
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if *manifestName == "" {
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if flag.NArg() > 1 {
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log.Print(usage)
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flag.Usage()
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log.Fatal("podex: -id arg is required when passing more than one image")
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}
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_, _, *podName, _ = splitDockerImageName(flag.Arg(0))
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_, _, *manifestName, _ = splitDockerImageName(flag.Arg(0))
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}
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if (!*generateJSON && !*generateYAML) || (*generateJSON && *generateYAML) {
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log.Fatal(usage)
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}
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podContainers := []v1beta1.Container{}
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podContainers := []goyaml.MapSlice{}
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for _, imageName := range flag.Args() {
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host, namespace, repo, tag := splitDockerImageName(imageName)
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container := v1beta1.Container{
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Name: repo,
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Image: imageName,
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container := goyaml.MapSlice{
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{Key: "name", Value: repo},
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{Key: "image", Value: imageName},
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}
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img, err := getImageMetadata(host, namespace, repo, tag)
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@ -89,43 +93,79 @@ func main() {
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if err != nil {
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log.Fatalf("failed to get image metadata %q: %v", imageName, err)
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}
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portSlice := []goyaml.MapSlice{}
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for p := range img.ContainerConfig.ExposedPorts {
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port, err := strconv.Atoi(p.Port())
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if err != nil {
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log.Fatalf("failed to parse port %q: %v", p.Port(), err)
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}
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container.Ports = append(container.Ports, v1beta1.Port{
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Name: strings.Join([]string{repo, p.Proto(), p.Port()}, "-"),
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ContainerPort: port,
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Protocol: v1beta1.Protocol(strings.ToUpper(p.Proto())),
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})
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portEntry := goyaml.MapSlice{{
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Key: "name",
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Value: strings.Join([]string{repo, p.Proto(), p.Port()}, "-"),
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}, {
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Key: "containerPort",
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Value: port,
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}}
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portSlice = append(portSlice, portEntry)
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if p.Proto() != "tcp" {
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portEntry = append(portEntry, goyaml.MapItem{Key: "protocol", Value: strings.ToUpper(p.Proto())})
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}
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}
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if len(img.ContainerConfig.ExposedPorts) > 0 {
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container = append(container, goyaml.MapItem{Key: "ports", Value: portSlice})
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}
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podContainers = append(podContainers, container)
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}
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// TODO(proppy): add flag to handle multiple version
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manifest := v1beta1.ContainerManifest{
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Version: "v1beta1",
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ID: *podName + "-pod",
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Containers: podContainers,
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RestartPolicy: v1beta1.RestartPolicy{
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Always: &v1beta1.RestartPolicyAlways{},
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},
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containerManifest := goyaml.MapSlice{
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{Key: "version", Value: "v1beta2"},
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{Key: "containers", Value: podContainers},
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}
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if *generateJSON {
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bs, err := json.MarshalIndent(manifest, "", " ")
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if err != nil {
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log.Fatalf("failed to render JSON container manifest: %v", err)
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var data interface{}
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switch *manifestType {
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case "container":
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containerManifest = append(goyaml.MapSlice{
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{Key: "id", Value: *manifestName},
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}, containerManifest...)
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data = containerManifest
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case "pod":
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data = goyaml.MapSlice{
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{Key: "id", Value: *manifestName},
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{Key: "kind", Value: "Pod"},
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{Key: "apiVersion", Value: "v1beta1"},
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{Key: "desiredState", Value: goyaml.MapSlice{
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{Key: "manifest", Value: containerManifest},
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}},
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}
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os.Stdout.Write(bs)
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default:
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flag.Usage()
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log.Fatalf("unsupported manifest type %q", *manifestType)
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}
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if *generateYAML {
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bs, err := yaml.Marshal(manifest)
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yamlBytes, err := goyaml.Marshal(data)
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if err != nil {
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log.Fatalf("failed to marshal container manifest: %v", err)
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}
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switch *manifestFormat {
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case "yaml":
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os.Stdout.Write(yamlBytes)
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case "json":
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jsonBytes, err := yaml.YAMLToJSON(yamlBytes)
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if err != nil {
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log.Fatalf("failed to render YAML container manifest: %v", err)
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log.Fatalf("failed to marshal container manifest into JSON: %v", err)
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}
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os.Stdout.Write(bs)
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var jsonPretty bytes.Buffer
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if err := json.Indent(&jsonPretty, jsonBytes, "", " "); err != nil {
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log.Fatalf("failed to indent json %q: %v", string(jsonBytes), err)
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}
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io.Copy(os.Stdout, &jsonPretty)
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default:
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flag.Usage()
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log.Fatalf("unsupported manifest format %q", *manifestFormat)
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}
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}
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@ -215,11 +255,8 @@ func getImageMetadata(host, namespace, repo, tag string) (*imageMetadata, error)
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if err != nil {
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return nil, fmt.Errorf("error getting json for image %q: %v", imageID, err)
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}
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data, _ := ioutil.ReadAll(resp.Body)
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buf := bytes.NewBuffer(data)
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log.Print(string(data))
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var image imageMetadata
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if err := json.NewDecoder(buf).Decode(&image); err != nil {
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if err := json.NewDecoder(resp.Body).Decode(&image); err != nil {
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return nil, fmt.Errorf("error decoding image %q metadata: %v", imageID, err)
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}
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return &image, nil
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@ -34,6 +34,7 @@ kube::test::find_dirs() {
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-o -wholename './target' \
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-o -wholename '*/third_party/*' \
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-o -wholename '*/Godeps/*' \
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-o -wholename '*/contrib/podex/*' \
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\) -prune \
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\) -name '*_test.go' -print0 | xargs -0n1 dirname | sed 's|^\./||' | sort -u
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)
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