| /* |
| * 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 ( |
| "fmt" |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| "github.com/apache/servicecomb-service-center/pkg/task" |
| "github.com/apache/servicecomb-service-center/server/core" |
| "github.com/apache/servicecomb-service-center/server/core/backend" |
| pb "github.com/apache/servicecomb-service-center/server/core/proto" |
| "github.com/apache/servicecomb-service-center/server/plugin/pkg/discovery" |
| nf "github.com/apache/servicecomb-service-center/server/service/notification" |
| serviceUtil "github.com/apache/servicecomb-service-center/server/service/util" |
| "golang.org/x/net/context" |
| ) |
| |
| type RulesChangedTask struct { |
| key string |
| err error |
| |
| DomainProject string |
| ProviderId string |
| Rev int64 |
| } |
| |
| func (apt *RulesChangedTask) Key() string { |
| return apt.key |
| } |
| |
| func (apt *RulesChangedTask) Do(ctx context.Context) error { |
| apt.err = apt.publish(ctx, apt.DomainProject, apt.ProviderId, apt.Rev) |
| return apt.err |
| } |
| |
| func (apt *RulesChangedTask) Err() error { |
| return apt.err |
| } |
| |
| func (apt *RulesChangedTask) publish(ctx context.Context, domainProject, providerId string, rev int64) error { |
| ctx = context.WithValue(context.WithValue(ctx, |
| serviceUtil.CTX_CACHEONLY, "1"), |
| serviceUtil.CTX_GLOBAL, "1") |
| |
| provider, err := serviceUtil.GetService(ctx, domainProject, providerId) |
| if err != nil { |
| log.Errorf(err, "get provider[%s] service file failed", providerId) |
| return err |
| } |
| if provider == nil { |
| log.Errorf(nil, "provider[%s] does not exist", providerId) |
| return fmt.Errorf("provider %s does not exist", providerId) |
| } |
| |
| consumerIds, err := serviceUtil.GetConsumerIds(ctx, domainProject, provider) |
| if err != nil { |
| log.Errorf(err, "get service[%s][%s/%s/%s/%s]'s consumerIds failed", |
| providerId, provider.Environment, provider.AppId, provider.ServiceName, provider.Version) |
| return err |
| } |
| providerKey := pb.MicroServiceToKey(domainProject, provider) |
| |
| PublishInstanceEvent(domainProject, pb.EVT_EXPIRE, providerKey, nil, rev, consumerIds) |
| return nil |
| } |
| |
| type RuleEventHandler struct { |
| } |
| |
| func (h *RuleEventHandler) Type() discovery.Type { |
| return backend.RULE |
| } |
| |
| func (h *RuleEventHandler) OnEvent(evt discovery.KvEvent) { |
| action := evt.Type |
| if action == pb.EVT_INIT { |
| return |
| } |
| |
| providerId, ruleId, domainProject := core.GetInfoFromRuleKV(evt.KV.Key) |
| if nf.GetNotifyService().Closed() { |
| log.Warnf("caught [%s] service rule[%s/%s] event, but notify service is closed", |
| action, providerId, ruleId) |
| return |
| } |
| log.Infof("caught [%s] service rule[%s/%s] event", action, providerId, ruleId) |
| |
| task.Service().Add(context.Background(), |
| NewRulesChangedAsyncTask(domainProject, providerId, evt.Revision)) |
| } |
| |
| func NewRuleEventHandler() *RuleEventHandler { |
| return &RuleEventHandler{} |
| } |
| |
| func NewRulesChangedAsyncTask(domainProject, providerId string, rev int64) *RulesChangedTask { |
| return &RulesChangedTask{ |
| key: "RulesChangedAsyncTask_" + providerId, |
| DomainProject: domainProject, |
| ProviderId: providerId, |
| Rev: rev, |
| } |
| } |