github.com/stefanmcshane/helm@v0.0.0-20221213002717-88a4a2c6e77d/pkg/kube/wait.go (about) 1 /* 2 Copyright The Helm Authors. 3 4 Licensed under the Apache License, Version 2.0 (the "License"); 5 you may not use this file except in compliance with the License. 6 You may obtain a copy of the License at 7 8 http://www.apache.org/licenses/LICENSE-2.0 9 10 Unless required by applicable law or agreed to in writing, software 11 distributed under the License is distributed on an "AS IS" BASIS, 12 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 See the License for the specific language governing permissions and 14 limitations under the License. 15 */ 16 17 package kube // import "github.com/stefanmcshane/helm/pkg/kube" 18 19 import ( 20 "context" 21 "fmt" 22 "time" 23 24 "github.com/pkg/errors" 25 appsv1 "k8s.io/api/apps/v1" 26 appsv1beta1 "k8s.io/api/apps/v1beta1" 27 appsv1beta2 "k8s.io/api/apps/v1beta2" 28 batchv1 "k8s.io/api/batch/v1" 29 corev1 "k8s.io/api/core/v1" 30 extensionsv1beta1 "k8s.io/api/extensions/v1beta1" 31 apierrors "k8s.io/apimachinery/pkg/api/errors" 32 metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" 33 "k8s.io/apimachinery/pkg/labels" 34 "k8s.io/apimachinery/pkg/runtime" 35 36 "k8s.io/apimachinery/pkg/util/wait" 37 ) 38 39 type waiter struct { 40 c ReadyChecker 41 timeout time.Duration 42 log func(string, ...interface{}) 43 } 44 45 // waitForResources polls to get the current status of all pods, PVCs, Services and 46 // Jobs(optional) until all are ready or a timeout is reached 47 func (w *waiter) waitForResources(created ResourceList) error { 48 w.log("beginning wait for %d resources with timeout of %v", len(created), w.timeout) 49 50 ctx, cancel := context.WithTimeout(context.Background(), w.timeout) 51 defer cancel() 52 53 return wait.PollImmediateUntil(2*time.Second, func() (bool, error) { 54 for _, v := range created { 55 ready, err := w.c.IsReady(ctx, v) 56 if !ready || err != nil { 57 return false, err 58 } 59 } 60 return true, nil 61 }, ctx.Done()) 62 } 63 64 // waitForDeletedResources polls to check if all the resources are deleted or a timeout is reached 65 func (w *waiter) waitForDeletedResources(deleted ResourceList) error { 66 w.log("beginning wait for %d resources to be deleted with timeout of %v", len(deleted), w.timeout) 67 68 ctx, cancel := context.WithTimeout(context.Background(), w.timeout) 69 defer cancel() 70 71 return wait.PollImmediateUntil(2*time.Second, func() (bool, error) { 72 for _, v := range deleted { 73 err := v.Get() 74 if err == nil || !apierrors.IsNotFound(err) { 75 return false, err 76 } 77 } 78 return true, nil 79 }, ctx.Done()) 80 } 81 82 // SelectorsForObject returns the pod label selector for a given object 83 // 84 // Modified version of https://github.com/kubernetes/kubernetes/blob/v1.14.1/pkg/kubectl/polymorphichelpers/helpers.go#L84 85 func SelectorsForObject(object runtime.Object) (selector labels.Selector, err error) { 86 switch t := object.(type) { 87 case *extensionsv1beta1.ReplicaSet: 88 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 89 case *appsv1.ReplicaSet: 90 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 91 case *appsv1beta2.ReplicaSet: 92 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 93 case *corev1.ReplicationController: 94 selector = labels.SelectorFromSet(t.Spec.Selector) 95 case *appsv1.StatefulSet: 96 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 97 case *appsv1beta1.StatefulSet: 98 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 99 case *appsv1beta2.StatefulSet: 100 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 101 case *extensionsv1beta1.DaemonSet: 102 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 103 case *appsv1.DaemonSet: 104 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 105 case *appsv1beta2.DaemonSet: 106 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 107 case *extensionsv1beta1.Deployment: 108 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 109 case *appsv1.Deployment: 110 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 111 case *appsv1beta1.Deployment: 112 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 113 case *appsv1beta2.Deployment: 114 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 115 case *batchv1.Job: 116 selector, err = metav1.LabelSelectorAsSelector(t.Spec.Selector) 117 case *corev1.Service: 118 if t.Spec.Selector == nil || len(t.Spec.Selector) == 0 { 119 return nil, fmt.Errorf("invalid service '%s': Service is defined without a selector", t.Name) 120 } 121 selector = labels.SelectorFromSet(t.Spec.Selector) 122 123 default: 124 return nil, fmt.Errorf("selector for %T not implemented", object) 125 } 126 127 return selector, errors.Wrap(err, "invalid label selector") 128 }