| /* |
| * 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 registry |
| |
| import ( |
| "dubbo.apache.org/dubbo-go/v3/common/observer" |
| gxset "github.com/dubbogo/gost/container/set" |
| "reflect" |
| ) |
| |
| // ServiceInstancesChangedListener The Service Discovery Changed Event Listener |
| type ServiceInstancesChangedListener interface { |
| // OnEvent on ServiceInstancesChangedEvent the service instances change event |
| OnEvent(e observer.Event) error |
| // AddListenerAndNotify add notify listener and notify to listen service event |
| AddListenerAndNotify(serviceKey string, notify NotifyListener) |
| // RemoveListener remove notify listener |
| RemoveListener(serviceKey string) |
| // GetServiceNames return all listener service names |
| GetServiceNames() *gxset.HashSet |
| // Accept return true if the name is the same |
| Accept(e observer.Event) bool |
| // GetEventType returns ServiceInstancesChangedEvent |
| GetEventType() reflect.Type |
| // GetPriority returns -1, it will be the first invoked listener |
| GetPriority() int |
| } |