Add glide.yaml and vendor deps

vendor/k8s.io/kubernetes/pkg/util/pod/pod.go

@@ -0,0 +1,108 @@
+/*
+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 pod
+
+import (
+	"fmt"
+	"hash/adler32"
+	"time"
+
+	"github.com/golang/glog"
+
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/api/errors"
+	"k8s.io/kubernetes/pkg/api/v1"
+	v1core "k8s.io/kubernetes/pkg/client/clientset_generated/release_1_5/typed/core/v1"
+	errorsutil "k8s.io/kubernetes/pkg/util/errors"
+	hashutil "k8s.io/kubernetes/pkg/util/hash"
+	"k8s.io/kubernetes/pkg/util/wait"
+)
+
+func GetPodTemplateSpecHash(template v1.PodTemplateSpec) uint32 {
+	podTemplateSpecHasher := adler32.New()
+	hashutil.DeepHashObject(podTemplateSpecHasher, template)
+	return podTemplateSpecHasher.Sum32()
+}
+
+// TODO: remove the duplicate
+func GetInternalPodTemplateSpecHash(template api.PodTemplateSpec) uint32 {
+	podTemplateSpecHasher := adler32.New()
+	hashutil.DeepHashObject(podTemplateSpecHasher, template)
+	return podTemplateSpecHasher.Sum32()
+}
+
+// TODO: use client library instead when it starts to support update retries
+//       see https://github.com/kubernetes/kubernetes/issues/21479
+type updatePodFunc func(pod *v1.Pod) error
+
+// UpdatePodWithRetries updates a pod with given applyUpdate function. Note that pod not found error is ignored.
+// The returned bool value can be used to tell if the pod is actually updated.
+func UpdatePodWithRetries(podClient v1core.PodInterface, pod *v1.Pod, applyUpdate updatePodFunc) (*v1.Pod, bool, error) {
+	var err error
+	var podUpdated bool
+	oldPod := pod
+	if err = wait.Poll(10*time.Millisecond, 1*time.Minute, func() (bool, error) {
+		pod, err = podClient.Get(oldPod.Name)
+		if err != nil {
+			return false, err
+		}
+		// Apply the update, then attempt to push it to the apiserver.
+		if err = applyUpdate(pod); err != nil {
+			return false, err
+		}
+		if pod, err = podClient.Update(pod); err == nil {
+			// Update successful.
+			return true, nil
+		}
+		// TODO: don't retry on perm-failed errors and handle them gracefully
+		// Update could have failed due to conflict error. Try again.
+		return false, nil
+	}); err == nil {
+		// When there's no error, we've updated this pod.
+		podUpdated = true
+	}
+
+	// Handle returned error from wait poll
+	if err == wait.ErrWaitTimeout {
+		err = fmt.Errorf("timed out trying to update pod: %#v", oldPod)
+	}
+	// Ignore the pod not found error, but the pod isn't updated.
+	if errors.IsNotFound(err) {
+		glog.V(4).Infof("%s %s/%s is not found, skip updating it.", oldPod.Kind, oldPod.Namespace, oldPod.Name)
+		err = nil
+	}
+	// Ignore the precondition violated error, but the pod isn't updated.
+	if err == errorsutil.ErrPreconditionViolated {
+		glog.V(4).Infof("%s %s/%s precondition doesn't hold, skip updating it.", oldPod.Kind, oldPod.Namespace, oldPod.Name)
+		err = nil
+	}
+
+	// If the error is non-nil the returned pod cannot be trusted; if podUpdated is false, the pod isn't updated;
+	// if the error is nil and podUpdated is true, the returned pod contains the applied update.
+	return pod, podUpdated, err
+}
+
+// Filter uses the input function f to filter the given pod list, and return the filtered pods
+func Filter(podList *v1.PodList, f func(v1.Pod) bool) []v1.Pod {
+	pods := make([]v1.Pod, 0)
+	for _, p := range podList.Items {
+		if f(p) {
+			pods = append(pods, p)
+		}
+	}
+	return pods
+}