fix(tiller): return status for deleted release

This modifies `helm status` to return info about deleted and failed
releases. We do our best to retrieve info for releases that were
partially deployed.

cmd/helm/status.go

@@ -83,7 +83,9 @@ func PrintStatus(out io.Writer, res *services.GetReleaseStatusResponse) {
 		fmt.Fprintf(out, "Details: %s\n", res.Info.Status.Details)
 	}
 	fmt.Fprintf(out, "\n")
+	if len(res.Info.Status.Resources) > 0 {
 		fmt.Fprintf(out, "Resources:\n%s\n", res.Info.Status.Resources)
+	}
 	if len(res.Info.Status.Notes) > 0 {
 		fmt.Fprintf(out, "Notes:\n%s\n", res.Info.Status.Notes)
 	}

cmd/tiller/release_server.go

@@ -190,17 +190,22 @@ func (s *releaseServer) GetReleaseStatus(c ctx.Context, req *services.GetRelease
 		return nil, errors.New("release chart is missing")
 	}
 
+	sc := rel.Info.Status.Code
+	statusResp := &services.GetReleaseStatusResponse{Info: rel.Info, Namespace: rel.Namespace}
+
 	// Ok, we got the status of the release as we had jotted down, now we need to match the
 	// manifest we stashed away with reality from the cluster.
 	kubeCli := s.env.KubeClient
 	resp, err := kubeCli.Get(rel.Namespace, bytes.NewBufferString(rel.Manifest))
-	if err != nil {
+	if sc == release.Status_DELETED || sc == release.Status_FAILED {
+		// Skip errors if this is already deleted or failed.
+		return statusResp, nil
+	} else if err != nil {
 		log.Printf("warning: Get for %s failed: %v", rel.Name, err)
 		return nil, err
 	}
 	rel.Info.Status.Resources = resp
-
-	return &services.GetReleaseStatusResponse{Info: rel.Info, Namespace: rel.Namespace}, nil
+	return statusResp, nil
 }
 
 func (s *releaseServer) GetReleaseContent(c ctx.Context, req *services.GetReleaseContentRequest) (*services.GetReleaseContentResponse, error) {

cmd/tiller/release_server_test.go

@@ -711,6 +711,25 @@ func TestGetReleaseStatus(t *testing.T) {
 	}
 }
 
+func TestGetReleaseStatusDeleted(t *testing.T) {
+	c := context.Background()
+	rs := rsFixture()
+	rel := releaseStub()
+	rel.Info.Status.Code = release.Status_DELETED
+	if err := rs.env.Releases.Create(rel); err != nil {
+		t.Fatalf("Could not store mock release: %s", err)
+	}
+
+	res, err := rs.GetReleaseStatus(c, &services.GetReleaseStatusRequest{Name: rel.Name})
+	if err != nil {
+		t.Errorf("Error getting release content: %s", err)
+	}
+
+	if res.Info.Status.Code != release.Status_DELETED {
+		t.Errorf("Expected %d, got %d", release.Status_DELETED, res.Info.Status.Code)
+	}
+}
+
 func TestListReleases(t *testing.T) {
 	rs := rsFixture()
 	num := 7