tianxiaoliang commented on a change in pull request #844: URL: https://github.com/apache/servicecomb-service-center/pull/844#discussion_r570664808
########## File path: datasource/mongo/heartbeat/heartbeatcache/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 + 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("heartbeat.cache.capacity", 10000, config.WithStandby("heartbeat_cache_capacity")) + cacheChan = make(chan *instanceHeartbeatInfo, capacity) + num := config.GetInt("heartbeat.worker.num", 10, config.WithStandby("heartbeat_worker_num")) + 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 + case heartbeatInfo, ok := <-cacheChan: + if ok { + instanceHeartbeatStore.Set(heartbeatInfo.instanceID, heartbeatInfo, time.Duration(heartbeatInfo.ttl)*time.Second) + } else { Review comment: 没必要用else，再想想写法，消除掉 ########## File path: datasource/mongo/heartbeat/heartbeatcache/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 + 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("heartbeat.cache.capacity", 10000, config.WithStandby("heartbeat_cache_capacity")) + cacheChan = make(chan *instanceHeartbeatInfo, capacity) + num := config.GetInt("heartbeat.worker.num", 10, config.WithStandby("heartbeat_worker_num")) + 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 + case heartbeatInfo, ok := <-cacheChan: + if ok { + instanceHeartbeatStore.Set(heartbeatInfo.instanceID, heartbeatInfo, time.Duration(heartbeatInfo.ttl)*time.Second) + } else { + return + } + } + } + }) + } +} + +func addCacheInstance(serviceID string, instanceID string, ttl int32) { + // Unassigned setting default value is 30s + if ttl <= 0 { + ttl = defaultTTL + } + newInstance := &instanceHeartbeatInfo{ + serviceID: serviceID, + instanceID: instanceID, + ttl: ttl, + lastRefresh: time.Now(), + } + cacheChan <- newInstance +} + +func removeCacheInstance(instanceID string) { + instanceHeartbeatStore.Delete(instanceID) +} + +func cleanInstance(ctx context.Context, serviceID string, instanceID string) error { + session, err := client.GetMongoClient().StartSession(ctx) + if err != nil { + return err + } + if err = session.StartTransaction(); err != nil { + return err + } + defer session.EndSession(ctx) + + filter := bson.M{ + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnServiceID}): serviceID, + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnInstanceID}): instanceID, + } + + result, err := client.GetMongoClient().FindOne(ctx, mongo.CollectionInstance, filter) + if err != nil { + log.Error("failed to query instance: %v", err) + return err + } + var ins mongo.Instance + err = result.Decode(&ins) + if err != nil { + log.Error("decode instance failed: %v", err) + return err + } + ttl := ins.InstanceInfo.HealthCheck.Interval * (ins.InstanceInfo.HealthCheck.Times + 1) + if ttl <= 0 { + ttl = defaultTTL + } + if judgeRefreshTimeTimeout(ins.RefreshTime, ttl) { + return nil + } + err = removeDBInstance(ctx, ins.InstanceInfo.ServiceId, ins.InstanceInfo.InstanceId) + if err != nil { + log.Error("fail to remote instance in db: %v", err) + errAbort := session.AbortTransaction(ctx) + if errAbort != nil { + return errAbort + } + return err + } + err = session.CommitTransaction(ctx) + return err +} + +func removeDBInstance(ctx context.Context, serviceID string, instanceID string) error { + filter := bson.M{ + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnServiceID}): serviceID, + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnInstanceID}): instanceID, + } + res, err := client.GetMongoClient().DeleteOne(ctx, mongo.CollectionInstance, filter) + if err != nil { + log.Error("failed to clean instance", err) + return err + } + log.Info(fmt.Sprintf("delete from mongodb:%+v", res)) + return nil +} + +func findInstance(ctx context.Context, serviceID string, instanceID string) (int32, int32, error) { Review comment: 函数名不直观，意义和返回值不相符 ########## File path: datasource/mongo/heartbeat/heartbeatcache/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 + 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("heartbeat.cache.capacity", 10000, config.WithStandby("heartbeat_cache_capacity")) + cacheChan = make(chan *instanceHeartbeatInfo, capacity) + num := config.GetInt("heartbeat.worker.num", 10, config.WithStandby("heartbeat_worker_num")) Review comment: 没必要传withstandby，因为都是新设计的配置项，不再需要支持ini格式，只需要支持yaml ########## File path: datasource/mongo/heartbeat/heartbeatcache/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 + 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("heartbeat.cache.capacity", 10000, config.WithStandby("heartbeat_cache_capacity")) + cacheChan = make(chan *instanceHeartbeatInfo, capacity) + num := config.GetInt("heartbeat.worker.num", 10, config.WithStandby("heartbeat_worker_num")) + 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 + case heartbeatInfo, ok := <-cacheChan: + if ok { + instanceHeartbeatStore.Set(heartbeatInfo.instanceID, heartbeatInfo, time.Duration(heartbeatInfo.ttl)*time.Second) + } else { + return + } + } + } + }) + } +} + +func addCacheInstance(serviceID string, instanceID string, ttl int32) { + // Unassigned setting default value is 30s + if ttl <= 0 { + ttl = defaultTTL + } + newInstance := &instanceHeartbeatInfo{ + serviceID: serviceID, + instanceID: instanceID, + ttl: ttl, + lastRefresh: time.Now(), + } + cacheChan <- newInstance +} + +func removeCacheInstance(instanceID string) { + instanceHeartbeatStore.Delete(instanceID) +} + +func cleanInstance(ctx context.Context, serviceID string, instanceID string) error { + session, err := client.GetMongoClient().StartSession(ctx) + if err != nil { + return err + } + if err = session.StartTransaction(); err != nil { + return err + } + defer session.EndSession(ctx) + + filter := bson.M{ + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnServiceID}): serviceID, + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnInstanceID}): instanceID, Review comment: 常量极其内容我希望简写，从xxxinfo写为xxx，大数据量中，这样是一定可以节约内存和计算的 ########## File path: datasource/mongo/heartbeat/heartbeatcache/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 + 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("heartbeat.cache.capacity", 10000, config.WithStandby("heartbeat_cache_capacity")) Review comment: 魔鬼数字 ########## File path: datasource/mongo/heartbeat/heartbeatcache/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 + 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("heartbeat.cache.capacity", 10000, config.WithStandby("heartbeat_cache_capacity")) + cacheChan = make(chan *instanceHeartbeatInfo, capacity) + num := config.GetInt("heartbeat.worker.num", 10, config.WithStandby("heartbeat_worker_num")) + 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 + case heartbeatInfo, ok := <-cacheChan: + if ok { + instanceHeartbeatStore.Set(heartbeatInfo.instanceID, heartbeatInfo, time.Duration(heartbeatInfo.ttl)*time.Second) + } else { + return + } + } + } + }) + } +} + +func addCacheInstance(serviceID string, instanceID string, ttl int32) { + // Unassigned setting default value is 30s + if ttl <= 0 { + ttl = defaultTTL + } + newInstance := &instanceHeartbeatInfo{ + serviceID: serviceID, + instanceID: instanceID, + ttl: ttl, + lastRefresh: time.Now(), + } + cacheChan <- newInstance +} + +func removeCacheInstance(instanceID string) { + instanceHeartbeatStore.Delete(instanceID) +} + +func cleanInstance(ctx context.Context, serviceID string, instanceID string) error { + session, err := client.GetMongoClient().StartSession(ctx) + if err != nil { + return err + } + if err = session.StartTransaction(); err != nil { + return err + } + defer session.EndSession(ctx) + + filter := bson.M{ + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnServiceID}): serviceID, + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnInstanceID}): instanceID, + } + + result, err := client.GetMongoClient().FindOne(ctx, mongo.CollectionInstance, filter) + if err != nil { + log.Error("failed to query instance: %v", err) + return err + } + var ins mongo.Instance + err = result.Decode(&ins) + if err != nil { + log.Error("decode instance failed: %v", err) + return err + } + ttl := ins.InstanceInfo.HealthCheck.Interval * (ins.InstanceInfo.HealthCheck.Times + 1) + if ttl <= 0 { + ttl = defaultTTL + } + if judgeRefreshTimeTimeout(ins.RefreshTime, ttl) { + return nil + } + err = removeDBInstance(ctx, ins.InstanceInfo.ServiceId, ins.InstanceInfo.InstanceId) + if err != nil { + log.Error("fail to remote instance in db: %v", err) + errAbort := session.AbortTransaction(ctx) + if errAbort != nil { + return errAbort + } + return err + } + err = session.CommitTransaction(ctx) + return err +} + +func removeDBInstance(ctx context.Context, serviceID string, instanceID string) error { + filter := bson.M{ + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnServiceID}): serviceID, + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnInstanceID}): instanceID, + } + res, err := client.GetMongoClient().DeleteOne(ctx, mongo.CollectionInstance, filter) + if err != nil { + log.Error("failed to clean instance", err) + return err + } + log.Info(fmt.Sprintf("delete from mongodb:%+v", res)) + return nil +} + +func findInstance(ctx context.Context, serviceID string, instanceID string) (int32, int32, error) { + filter := bson.M{ + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnServiceID}): serviceID, + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnInstanceID}): instanceID, + } + result, err := client.GetMongoClient().FindOne(ctx, mongo.CollectionInstance, filter) + if err != nil { + return 0, 0, err + } + var ins mongo.Instance + err = result.Decode(&ins) + if err != nil { + log.Error("decode instance failed: ", err) + return 0, 0, err + } + return ins.InstanceInfo.HealthCheck.Interval, ins.InstanceInfo.HealthCheck.Times, nil +} + +func updateInstance(ctx context.Context, serviceID string, instanceID string) error { + filter := bson.M{ + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnServiceID}): serviceID, + mongo.StringBuilder([]string{mongo.ColumnInstanceInfo, mongo.ColumnInstanceID}): instanceID, + } + update := bson.M{ + "$set": bson.M{mongo.ColumnRefreshTime: time.Now()}, + } + result, err := client.GetMongoClient().FindOneAndUpdate(ctx, mongo.CollectionInstance, filter, update) + if err != nil { + log.Error("failed to update refresh time of instance: ", err) + return err + } + return result.Err() +} + +func judgeRefreshTimeTimeout(refreshTime time.Time, ttl int32) bool { Review comment: 方法名不直观 ########## File path: datasource/mongo/heartbeat/heartbeatcache/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 + 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("heartbeat.cache.capacity", 10000, config.WithStandby("heartbeat_cache_capacity")) + cacheChan = make(chan *instanceHeartbeatInfo, capacity) + num := config.GetInt("heartbeat.worker.num", 10, config.WithStandby("heartbeat_worker_num")) + 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 + case heartbeatInfo, ok := <-cacheChan: + if ok { + instanceHeartbeatStore.Set(heartbeatInfo.instanceID, heartbeatInfo, time.Duration(heartbeatInfo.ttl)*time.Second) Review comment: time.Duration(heartbeatInfo.ttl)*time.Second) 我无法一眼看出这是多少秒，代码不够直观 ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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