Merge pull request #463 from michelleN/helm-describe

feat(deployment): add describe command to helm cli

cmd/helm/deployment.go

@@ -26,7 +26,10 @@ import (
 	"github.com/kubernetes/helm/pkg/format"
 )
 
-var errMissingDeploymentArg = errors.New("First argument, deployment name, is required. Try 'helm get --help'")
+var (
+	errMissingDeploymentArg = errors.New("First argument, deployment name, is required. Try 'helm get --help'")
+	errTooManyArgs          = errors.New("Too many arguments provided. Try 'helm dep describe [DEPLOYMENT]'")
+)
 
 const deploymentDesc = `A deployment is an instance of a Chart running in the cluster.
 
@@ -69,6 +72,12 @@ func deploymentCommands() cli.Command {
 				ArgsUsage: "DEPLOYMENT [DEPLOYMENT [...]]",
 				Action:    func(c *cli.Context) { run(c, deleteDeployment) },
 			},
+			{
+				Name:      "describe",
+				Usage:     "Describes the kubernetes resources for the named deployment(s).",
+				ArgsUsage: "DEPLOYMENT",
+				Action:    func(c *cli.Context) { run(c, describeDeployment) },
+			},
 			{
 				Name:      "manifest",
 				Usage:     "Dump the Kubernetes manifest file for this deployment.",
@@ -137,6 +146,25 @@ func deleteDeployment(c *cli.Context) error {
 	return nil
 }
 
+func describeDeployment(c *cli.Context) error {
+	args := c.Args()
+	if len(args) < 1 {
+		return errMissingDeploymentArg
+	}
+	if len(args) > 1 {
+		return errTooManyArgs
+	}
+	name := args[0]
+	_, err := NewClient(c).DescribeDeployment(name)
+	if err != nil {
+		return err
+	}
+
+	format.Info("TO BE IMPLEMENTED")
+
+	return nil
+}
+
 func showDeployment(c *cli.Context) error {
 	args := c.Args()
 	if len(args) < 1 {

pkg/client/deployments.go

@@ -100,6 +100,13 @@ func (c *Client) DeleteDeployment(name string) (*common.Deployment, error) {
 	return deployment, err
 }
 
+// DescribDeployment describes the kubernetes resources of the supplied deployment
+func (c *Client) DescribeDeployment(name string) (*common.Deployment, error) {
+	var deployment *common.Deployment
+	//TODO: implement
+	return deployment, nil
+}
+
 // PostDeployment posts a deployment object to the manager service.
 func (c *Client) PostDeployment(res *common.Resource) error {
 	// This is a stop-gap until we get this API cleaned up.