| /* |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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 kubernetes |
| |
| import ( |
| "context" |
| "time" |
| |
| "github.com/apache/camel-k/pkg/client" |
| "github.com/pkg/errors" |
| "k8s.io/apimachinery/pkg/runtime" |
| |
| k8serrors "k8s.io/apimachinery/pkg/api/errors" |
| k8sclient "sigs.k8s.io/controller-runtime/pkg/client" |
| ) |
| |
| // ResourceRetrieveFunction -- |
| type ResourceRetrieveFunction func() (interface{}, error) |
| |
| // ResourceCheckFunction -- |
| type ResourceCheckFunction func(interface{}) (bool, error) |
| |
| const ( |
| sleepTime = 400 * time.Millisecond |
| ) |
| |
| // WaitCondition -- |
| func WaitCondition(ctx context.Context, c client.Client, obj runtime.Object, condition ResourceCheckFunction, maxDuration time.Duration) error { |
| start := time.Now() |
| key, err := k8sclient.ObjectKeyFromObject(obj) |
| if err != nil { |
| return err |
| } |
| for start.Add(maxDuration).After(time.Now()) { |
| err := c.Get(ctx, key, obj) |
| if err != nil { |
| if k8serrors.IsNotFound(err) { |
| time.Sleep(sleepTime) |
| continue |
| } |
| |
| return err |
| } |
| |
| satisfied, err := condition(obj) |
| if err != nil { |
| return errors.Wrap(err, "error while evaluating condition") |
| } |
| if !satisfied { |
| time.Sleep(sleepTime) |
| continue |
| } |
| |
| return nil |
| } |
| return errors.New("timeout while waiting condition") |
| } |