| /* |
| * 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 mongo |
| |
| import ( |
| "context" |
| "errors" |
| "fmt" |
| "runtime" |
| "time" |
| |
| "github.com/apache/servicecomb-service-center/pkg/goutil" |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| "github.com/apache/servicecomb-service-center/pkg/util" |
| "github.com/go-chassis/foundation/gopool" |
| ) |
| |
| const ( |
| loopTime = 100 * time.Millisecond |
| batchLen = 10000 |
| fuseMinCount = 3 |
| fuseTime = 5 * time.Second |
| maxRegisterFailedTime = 500 |
| ctxCancelTimeOut = 60 * time.Second |
| ) |
| |
| var fastRegisterTimeTask *FastRegisterTimeTask |
| |
| type FastRegisterTimeTask struct { |
| goroutine *gopool.Pool |
| } |
| |
| func NewRegisterTimeTask() *FastRegisterTimeTask { |
| return &FastRegisterTimeTask{ |
| goroutine: goutil.New(), |
| } |
| } |
| |
| func (rt *FastRegisterTimeTask) Start() { |
| gopool.Go(fastRegisterTimeTask.loopRegister) |
| } |
| |
| func (rt *FastRegisterTimeTask) Stop() { |
| rt.goroutine.Close(true) |
| } |
| |
| func (rt *FastRegisterTimeTask) loopRegister(ctx context.Context) { |
| blockCh := make(chan struct{}, runtime.NumCPU()-1) |
| failedCount := make(chan int, 1) |
| failedCount <- 0 |
| ticker := time.NewTicker(loopTime) |
| |
| for { |
| select { |
| case <-ctx.Done(): |
| // server shutdown |
| return |
| case <-ticker.C: |
| length := len(GetFastRegisterInstanceService().InstEventCh) |
| if length == 0 { |
| continue |
| } |
| |
| // fuse is triggered if failed registry counts more than fuseMinCount |
| count := <-failedCount |
| if count > fuseMinCount { |
| time.Sleep(fuseTime) |
| } |
| failedCount <- count |
| |
| events := rt.generateEvents(length) |
| blockCh <- struct{}{} |
| go rt.RegisterInstancesAsync(events, blockCh, failedCount) |
| |
| case event, ok := <-GetFastRegisterInstanceService().FailedInstCh: |
| // if instance batch register failed, register it single |
| if !ok { |
| log.Error("failed instance channel is error", errors.New("channel closed")) |
| continue |
| } |
| |
| if event.failedTime > maxRegisterFailedTime { |
| log.Error(fmt.Sprintf("instance register retry time is more than max register time:%d, "+ |
| "the instance params maybe wrong, drop it", maxRegisterFailedTime), |
| errors.New("retry register instance failed")) |
| continue |
| } |
| |
| blockCh <- struct{}{} |
| |
| go rt.RegisterInstance(event, blockCh) |
| } |
| } |
| } |
| |
| func (rt *FastRegisterTimeTask) generateEvents(length int) []*InstanceRegisterEvent { |
| // if channel len >= batch len, use batch len, otherwise use channel len |
| if length >= batchLen { |
| length = batchLen |
| } |
| |
| events := make([]*InstanceRegisterEvent, 0) |
| |
| for i := 0; i < length; i++ { |
| event, ok := <-GetFastRegisterInstanceService().InstEventCh |
| |
| refreshCanceledCtx(event) |
| |
| if !ok { |
| log.Error("instance event channel is error", errors.New("channel closed")) |
| continue |
| } |
| events = append(events, event) |
| } |
| return events |
| } |
| |
| func (rt *FastRegisterTimeTask) RegisterInstancesAsync(events []*InstanceRegisterEvent, blockCh chan struct{}, failedCount chan int) { |
| defer endBlock(blockCh) |
| |
| ctx, cancel := context.WithTimeout(context.Background(), ctxCancelTimeOut) |
| defer cancel() |
| |
| err := RegisterInstanceBatch(ctx, events) |
| |
| count := <-failedCount |
| |
| if err != nil { |
| //failed count |
| count = count + 1 |
| failedCount <- count |
| |
| //add to failed instance channel, will retry register |
| log.Error("register instances err, retry it", err) |
| GetFastRegisterInstanceService().AddFailedEvents(events) |
| return |
| } |
| |
| failedCount <- 0 |
| } |
| |
| func (rt *FastRegisterTimeTask) RegisterInstance(event *InstanceRegisterEvent, blockCh chan struct{}) { |
| defer endBlock(blockCh) |
| |
| cancel := refreshCanceledCtx(event) |
| defer cancel() |
| |
| _, err := RegisterInstanceSingle(event.Ctx, event.Request, event.isCustomID) |
| if err != nil { |
| log.Error(fmt.Sprintf("register instance:%s failed again, failed times:%d", |
| event.Request.Instance.InstanceId, event.failedTime), err) |
| event.failedTime = event.failedTime + 1 |
| GetFastRegisterInstanceService().AddFailedEvent(event) |
| } |
| } |
| |
| func endBlock(blockCh chan struct{}) { |
| <-blockCh |
| } |
| |
| func refreshCanceledCtx(event *InstanceRegisterEvent) context.CancelFunc { |
| oldCtx := event.Ctx |
| newCtx, cancel := context.WithTimeout(context.Background(), ctxCancelTimeOut) |
| newCtx = util.SetDomain(newCtx, util.ParseDomain(oldCtx)) |
| newCtx = util.SetProject(newCtx, util.ParseProject(oldCtx)) |
| newCtx = util.SetContext(newCtx, util.CtxRemoteIP, util.ParseProject(oldCtx)) |
| event.Ctx = newCtx |
| return cancel |
| } |