| /* |
| * 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 event |
| |
| import ( |
| pb "github.com/go-chassis/cari/discovery" |
| |
| "github.com/apache/servicecomb-service-center/datasource/etcd/cache" |
| "github.com/apache/servicecomb-service-center/datasource/etcd/kv" |
| "github.com/apache/servicecomb-service-center/datasource/etcd/path" |
| "github.com/apache/servicecomb-service-center/datasource/etcd/sd" |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| ) |
| |
| // DependencyRuleEventHandler reset the find instances cache |
| // when provider dependency rule is changed |
| type DependencyRuleEventHandler struct { |
| } |
| |
| func (h *DependencyRuleEventHandler) Type() sd.Type { |
| return kv.DependencyRule |
| } |
| |
| func (h *DependencyRuleEventHandler) OnEvent(evt sd.KvEvent) { |
| action := evt.Type |
| if action != pb.EVT_UPDATE && action != pb.EVT_DELETE { |
| return |
| } |
| t, providerKey := path.GetInfoFromDependencyRuleKV(evt.KV.Key) |
| if t != path.DepsProvider { |
| return |
| } |
| log.Debugf("caught [%s] provider rule[%s/%s/%s/%s] event", |
| action, providerKey.Environment, providerKey.AppId, providerKey.ServiceName, providerKey.Version) |
| cache.DependencyRule.Remove(providerKey) |
| } |
| |
| func NewDependencyRuleEventHandler() *DependencyRuleEventHandler { |
| return &DependencyRuleEventHandler{} |
| } |