Add glide.yaml and vendor deps

vendor/k8s.io/kubernetes/pkg/kubectl/history.go

@@ -0,0 +1,135 @@
+/*
+Copyright 2016 The Kubernetes Authors.
+
+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 kubectl
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/api/meta"
+	"k8s.io/kubernetes/pkg/api/v1"
+	"k8s.io/kubernetes/pkg/apis/extensions"
+	clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
+	deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/runtime/schema"
+	sliceutil "k8s.io/kubernetes/pkg/util/slice"
+)
+
+const (
+	ChangeCauseAnnotation = "kubernetes.io/change-cause"
+)
+
+// HistoryViewer provides an interface for resources have historical information.
+type HistoryViewer interface {
+	ViewHistory(namespace, name string, revision int64) (string, error)
+}
+
+func HistoryViewerFor(kind schema.GroupKind, c clientset.Interface) (HistoryViewer, error) {
+	switch kind {
+	case extensions.Kind("Deployment"):
+		return &DeploymentHistoryViewer{c}, nil
+	}
+	return nil, fmt.Errorf("no history viewer has been implemented for %q", kind)
+}
+
+type DeploymentHistoryViewer struct {
+	c clientset.Interface
+}
+
+// ViewHistory returns a revision-to-replicaset map as the revision history of a deployment
+func (h *DeploymentHistoryViewer) ViewHistory(namespace, name string, revision int64) (string, error) {
+	versionedClient := versionedClientsetForDeployment(h.c)
+	deployment, err := versionedClient.Extensions().Deployments(namespace).Get(name)
+	if err != nil {
+		return "", fmt.Errorf("failed to retrieve deployment %s: %v", name, err)
+	}
+	_, allOldRSs, newRS, err := deploymentutil.GetAllReplicaSets(deployment, versionedClient)
+	if err != nil {
+		return "", fmt.Errorf("failed to retrieve replica sets from deployment %s: %v", name, err)
+	}
+	allRSs := allOldRSs
+	if newRS != nil {
+		allRSs = append(allRSs, newRS)
+	}
+
+	historyInfo := make(map[int64]*v1.PodTemplateSpec)
+	for _, rs := range allRSs {
+		v, err := deploymentutil.Revision(rs)
+		if err != nil {
+			continue
+		}
+		historyInfo[v] = &rs.Spec.Template
+		changeCause := getChangeCause(rs)
+		if historyInfo[v].Annotations == nil {
+			historyInfo[v].Annotations = make(map[string]string)
+		}
+		if len(changeCause) > 0 {
+			historyInfo[v].Annotations[ChangeCauseAnnotation] = changeCause
+		}
+	}
+
+	if len(historyInfo) == 0 {
+		return "No rollout history found.", nil
+	}
+
+	if revision > 0 {
+		// Print details of a specific revision
+		template, ok := historyInfo[revision]
+		if !ok {
+			return "", fmt.Errorf("unable to find the specified revision")
+		}
+		buf := bytes.NewBuffer([]byte{})
+		internalTemplate := &api.PodTemplateSpec{}
+		if err := v1.Convert_v1_PodTemplateSpec_To_api_PodTemplateSpec(template, internalTemplate, nil); err != nil {
+			return "", fmt.Errorf("failed to convert podtemplate, %v", err)
+		}
+		DescribePodTemplate(internalTemplate, buf)
+		return buf.String(), nil
+	}
+
+	// Sort the revisionToChangeCause map by revision
+	revisions := make([]int64, 0, len(historyInfo))
+	for r := range historyInfo {
+		revisions = append(revisions, r)
+	}
+	sliceutil.SortInts64(revisions)
+
+	return tabbedString(func(out io.Writer) error {
+		fmt.Fprintf(out, "REVISION\tCHANGE-CAUSE\n")
+		for _, r := range revisions {
+			// Find the change-cause of revision r
+			changeCause := historyInfo[r].Annotations[ChangeCauseAnnotation]
+			if len(changeCause) == 0 {
+				changeCause = "<none>"
+			}
+			fmt.Fprintf(out, "%d\t%s\n", r, changeCause)
+		}
+		return nil
+	})
+}
+
+// getChangeCause returns the change-cause annotation of the input object
+func getChangeCause(obj runtime.Object) string {
+	accessor, err := meta.Accessor(obj)
+	if err != nil {
+		return ""
+	}
+	return accessor.GetAnnotations()[ChangeCauseAnnotation]
+}