/* Copyright The Helm 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 kube // import "helm.sh/helm/v3/pkg/kube" import ( "context" "fmt" "time" "github.com/pkg/errors" appsv1 "k8s.io/api/apps/v1" appsv1beta1 "k8s.io/api/apps/v1beta1" appsv1beta2 "k8s.io/api/apps/v1beta2" batchv1 "k8s.io/api/batch/v1" corev1 "k8s.io/api/core/v1" extensionsv1beta1 "k8s.io/api/extensions/v1beta1" apierrors "k8s.io/apimachinery/pkg/api/errors" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" "k8s.io/apimachinery/pkg/labels" "k8s.io/apimachinery/pkg/runtime" "k8s.io/apimachinery/pkg/util/wait" ) type waiter struct { c ReadyChecker timeout time.Duration log func(string, ...interface{}) } // waitForResources polls to get the current status of all pods, PVCs, Services and // Jobs(optional) until all are ready or a timeout is reached func (w *waiter) waitForResources(created ResourceList) error { w.log("beginning wait for %d resources with timeout of %v", len(created), w.timeout) ctx, cancel := context.WithTimeout(context.Background(), w.timeout) defer cancel() return wait.PollUntilContextCancel(ctx, 2*time.Second, true, func(ctx context.Context) (bool, error) { for _, v := range created { ready, err := w.c.IsReady(ctx, v) if !ready || err != nil { return false, err } } return true, nil }) } // waitForDeletedResources polls to check if all the resources are deleted or a timeout is reached func (w *waiter) waitForDeletedResources(deleted ResourceList) error { w.log("beginning wait for %d resources to be deleted with timeout of %v", len(deleted), w.timeout) ctx, cancel := context.WithTimeout(context.Background(), w.timeout) defer cancel() return wait.PollUntilContextCancel(ctx, 2*time.Second, true, func(_ context.Context) (bool, error) { for _, v := range deleted { err := v.Get() if err == nil || !apierrors.IsNotFound(err) { return false, err } } return true, nil }) } // SelectorsForObject returns the pod label selector for a given object // // Modified version of https://github.com/kubernetes/kubernetes/blob/v1.14.1/pkg/kubectl/polymorphichelpers/helpers.go#L84 func SelectorsForObject(object runtime.Object) (selector labels.Selector, err error) { switch t := object.(type) { case *extensionsv1beta1.ReplicaSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1.ReplicaSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1beta2.ReplicaSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *corev1.ReplicationController: selector = labels.SelectorFromSet(t.Spec.Selector) case *appsv1.StatefulSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1beta1.StatefulSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1beta2.StatefulSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *extensionsv1beta1.DaemonSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1.DaemonSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1beta2.DaemonSet: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *extensionsv1beta1.Deployment: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1.Deployment: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1beta1.Deployment: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *appsv1beta2.Deployment: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *batchv1.Job: selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) case *corev1.Service: if t.Spec.Selector == nil || len(t.Spec.Selector) == 0 { return nil, fmt.Errorf("invalid service '%s': Service is defined without a selector", t.Name) } selector = labels.SelectorFromSet(t.Spec.Selector) default: return nil, fmt.Errorf("selector for %T not implemented", object) } return selector, errors.Wrap(err, "invalid label selector") }