79 lines
3.4 KiB
Go
79 lines
3.4 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kubectl
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import (
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"fmt"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/kubernetes/pkg/apis/extensions"
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"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
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extensionsclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/extensions/internalversion"
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"k8s.io/kubernetes/pkg/controller/deployment/util"
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)
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// StatusViewer provides an interface for resources that have rollout status.
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type StatusViewer interface {
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Status(namespace, name string, revision int64) (string, bool, error)
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}
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func StatusViewerFor(kind schema.GroupKind, c internalclientset.Interface) (StatusViewer, error) {
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switch kind {
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case extensions.Kind("Deployment"):
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return &DeploymentStatusViewer{c.Extensions()}, nil
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}
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return nil, fmt.Errorf("no status viewer has been implemented for %v", kind)
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}
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type DeploymentStatusViewer struct {
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c extensionsclient.DeploymentsGetter
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}
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// Status returns a message describing deployment status, and a bool value indicating if the status is considered done
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func (s *DeploymentStatusViewer) Status(namespace, name string, revision int64) (string, bool, error) {
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deployment, err := s.c.Deployments(namespace).Get(name, metav1.GetOptions{})
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if err != nil {
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return "", false, err
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}
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if revision > 0 {
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deploymentRev, err := util.Revision(deployment)
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if err != nil {
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return "", false, fmt.Errorf("cannot get the revision of deployment %q: %v", deployment.Name, err)
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}
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if revision != deploymentRev {
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return "", false, fmt.Errorf("desired revision (%d) is different from the running revision (%d)", revision, deploymentRev)
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}
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}
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if deployment.Generation <= deployment.Status.ObservedGeneration {
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cond := util.GetDeploymentConditionInternal(deployment.Status, extensions.DeploymentProgressing)
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if cond != nil && cond.Reason == util.TimedOutReason {
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return "", false, fmt.Errorf("deployment %q exceeded its progress deadline", name)
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}
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if deployment.Status.UpdatedReplicas < deployment.Spec.Replicas {
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return fmt.Sprintf("Waiting for rollout to finish: %d out of %d new replicas have been updated...\n", deployment.Status.UpdatedReplicas, deployment.Spec.Replicas), false, nil
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}
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if deployment.Status.Replicas > deployment.Status.UpdatedReplicas {
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return fmt.Sprintf("Waiting for rollout to finish: %d old replicas are pending termination...\n", deployment.Status.Replicas-deployment.Status.UpdatedReplicas), false, nil
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}
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if deployment.Status.AvailableReplicas < deployment.Status.UpdatedReplicas {
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return fmt.Sprintf("Waiting for rollout to finish: %d of %d updated replicas are available...\n", deployment.Status.AvailableReplicas, deployment.Status.UpdatedReplicas), false, nil
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}
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return fmt.Sprintf("deployment %q successfully rolled out\n", name), true, nil
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}
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return fmt.Sprintf("Waiting for deployment spec update to be observed...\n"), false, nil
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}
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