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Merge pull request #400 from sxllwx/k8s_merge
Add: kubernetes registry and remote package unit test
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| /* | ||
| * 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 ( | ||
| "strings" | ||
| ) | ||
|
|
||
| import ( | ||
| perrors "github.com/pkg/errors" | ||
| ) | ||
|
|
||
| import ( | ||
| "github.com/apache/dubbo-go/common" | ||
| "github.com/apache/dubbo-go/common/logger" | ||
| "github.com/apache/dubbo-go/config_center" | ||
| "github.com/apache/dubbo-go/registry" | ||
| "github.com/apache/dubbo-go/remoting" | ||
| ) | ||
|
|
||
| type dataListener struct { | ||
| interestedURL []*common.URL | ||
| listener config_center.ConfigurationListener | ||
| } | ||
|
|
||
| // NewRegistryDataListener | ||
| func NewRegistryDataListener(listener config_center.ConfigurationListener) *dataListener { | ||
| return &dataListener{listener: listener} | ||
| } | ||
|
|
||
| // AddInterestedURL | ||
| func (l *dataListener) AddInterestedURL(url *common.URL) { | ||
| l.interestedURL = append(l.interestedURL, url) | ||
| } | ||
|
|
||
| // DataChange | ||
| // notify listen, when interest event | ||
| func (l *dataListener) DataChange(eventType remoting.Event) bool { | ||
|
|
||
| index := strings.Index(eventType.Path, "/providers/") | ||
| if index == -1 { | ||
| logger.Warnf("Listen with no url, event.path={%v}", eventType.Path) | ||
| return false | ||
| } | ||
| url := eventType.Path[index+len("/providers/"):] | ||
| serviceURL, err := common.NewURL(url) | ||
| if err != nil { | ||
| logger.Warnf("Listen NewURL(r{%s}) = error{%v}", eventType.Path, err) | ||
| return false | ||
| } | ||
|
|
||
| for _, v := range l.interestedURL { | ||
| if serviceURL.URLEqual(*v) { | ||
| l.listener.Process( | ||
| &config_center.ConfigChangeEvent{ | ||
| Key: eventType.Path, | ||
| Value: serviceURL, | ||
| ConfigType: eventType.Action, | ||
| }, | ||
| ) | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| type configurationListener struct { | ||
| registry *kubernetesRegistry | ||
| events chan *config_center.ConfigChangeEvent | ||
| } | ||
|
|
||
| // NewConfigurationListener for listening the event of kubernetes. | ||
| func NewConfigurationListener(reg *kubernetesRegistry) *configurationListener { | ||
| // add a new waiter | ||
| reg.WaitGroup().Add(1) | ||
| return &configurationListener{registry: reg, events: make(chan *config_center.ConfigChangeEvent, 32)} | ||
| } | ||
|
|
||
| func (l *configurationListener) Process(configType *config_center.ConfigChangeEvent) { | ||
| l.events <- configType | ||
| } | ||
|
|
||
| func (l *configurationListener) Next() (*registry.ServiceEvent, error) { | ||
| for { | ||
| select { | ||
| case <-l.registry.Done(): | ||
| logger.Warnf("listener's kubernetes client connection is broken, so kubernetes event listener exits now.") | ||
| return nil, perrors.New("listener stopped") | ||
|
|
||
| case e := <-l.events: | ||
| logger.Infof("got kubernetes event %#v", e) | ||
| if e.ConfigType == remoting.EventTypeDel && !l.registry.client.Valid() { | ||
| select { | ||
| case <-l.registry.Done(): | ||
| logger.Warnf("update @result{%s}. But its connection to registry is invalid", e.Value) | ||
| default: | ||
| } | ||
| continue | ||
| } | ||
| return ®istry.ServiceEvent{Action: e.ConfigType, Service: e.Value.(common.URL)}, nil | ||
| } | ||
| } | ||
| } | ||
| func (l *configurationListener) Close() { | ||
| l.registry.WaitGroup().Done() | ||
| } |
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