tianxiaoliang commented on a change in pull request #844: URL: https://github.com/apache/servicecomb-service-center/pull/844#discussion_r570817718
########## File path: datasource/mongo/heartbeat/cache/heartbeat.go ########## @@ -0,0 +1,207 @@ +/* + * 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 request 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 request 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 heartbeatcache + +import ( + "context" + "fmt" + "runtime" + "time" + + "github.com/patrickmn/go-cache" + "go.mongodb.org/mongo-driver/bson" + + "github.com/apache/servicecomb-service-center/datasource/mongo" + "github.com/apache/servicecomb-service-center/datasource/mongo/client" + "github.com/apache/servicecomb-service-center/pkg/gopool" + "github.com/apache/servicecomb-service-center/pkg/log" + "github.com/apache/servicecomb-service-center/server/config" +) + +const ( + defaultTTL = 30 + defaultCacheCapacity = 10000 + defaultWorkNum = 10 + instanceCheckerInternal = 1 * time.Second + ctxTimeout = 5 * time.Second +) + +// Store cache structure +type instanceHeartbeatInfo struct { + serviceID string + instanceID string + ttl int32 + lastRefresh time.Time +} + +var ( + cacheChan chan *instanceHeartbeatInfo + instanceHeartbeatStore = cache.New(0, instanceCheckerInternal) + workerNum = runtime.NumCPU() +) + +func init() { + capacity := config.GetInt("registry.mongo.heartbeat.cacheCapacity", defaultCacheCapacity) + cacheChan = make(chan *instanceHeartbeatInfo, capacity) + num := config.GetInt("registry.mongo.heartbeat.workerNum", defaultWorkNum) + if num != 0 { + workerNum = num + } + instanceHeartbeatStore.OnEvicted(func(k string, v interface{}) { + instanceInfo, ok := v.(*instanceHeartbeatInfo) + if ok && instanceInfo != nil { + ctx, cancel := context.WithTimeout(context.Background(), ctxTimeout) + defer cancel() + err := cleanInstance(ctx, instanceInfo.serviceID, instanceInfo.instanceID) + if err != nil { + log.Error("failed to cleanInstance in mongodb.", err) + } + } + }) + + for i := 1; i <= workerNum; i++ { + gopool.Go(func(ctx context.Context) { + for { + select { + case <-ctx.Done(): + return Review comment: 这里worker会退出，这是个严重的问题，要打warn日志跟踪 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
