| // Copyright Istio 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 mesh |
| |
| import ( |
| "errors" |
| "time" |
| ) |
| |
| import ( |
| meshconfig "istio.io/api/mesh/v1alpha1" |
| ) |
| |
| // only used for testing, exposes a blocking Update method that allows test environments to trigger meshConfig updates |
| type TestWatcher struct { |
| internalWatcher |
| doneCh chan struct{} // used to implement a blocking Update method |
| } |
| |
| func NewTestWatcher(meshConfig *meshconfig.MeshConfig) *TestWatcher { |
| w := &TestWatcher{ |
| internalWatcher: internalWatcher{MeshConfig: meshConfig}, |
| } |
| w.doneCh = make(chan struct{}, 1) |
| w.AddMeshHandler(func() { |
| w.doneCh <- struct{}{} |
| }) |
| return w |
| } |
| |
| // blocks until watcher handlers trigger |
| func (t *TestWatcher) Update(meshConfig *meshconfig.MeshConfig, timeout time.Duration) error { |
| t.HandleMeshConfig(meshConfig) |
| select { |
| case <-t.doneCh: |
| return nil |
| case <-time.After(time.Second * timeout): |
| return errors.New("timed out waiting for mesh.Watcher handler to trigger") |
| } |
| } |