110 lines
2.1 KiB
Go
110 lines
2.1 KiB
Go
/*
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* Copyright 2020 The Dragonfly Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package core
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import (
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"hash/crc32"
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logger "d7y.io/dragonfly/v2/internal/dflog"
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)
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type worker interface {
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start(*state)
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stop()
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send(event) bool
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}
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type workerGroup struct {
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workerNum int
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workerList []*baseWorker
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stopCh chan struct{}
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s *state
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}
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var _ worker = (*workerGroup)(nil)
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func newEventLoopGroup(workerNum int) worker {
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return &workerGroup{
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workerNum: workerNum,
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workerList: make([]*baseWorker, 0, workerNum),
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stopCh: make(chan struct{}),
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}
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}
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func (wg *workerGroup) start(s *state) {
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wg.s = s
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go s.start()
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for i := 0; i < wg.workerNum; i++ {
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w := newWorker()
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go w.start(s)
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wg.workerList = append(wg.workerList, w)
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}
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logger.Infof("start scheduler worker number:%d", wg.workerNum)
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}
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func (wg *workerGroup) send(e event) bool {
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choiceWorkerID := crc32.ChecksumIEEE([]byte(e.hashKey())) % uint32(wg.workerNum)
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return wg.workerList[choiceWorkerID].send(e)
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}
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func (wg *workerGroup) stop() {
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close(wg.stopCh)
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wg.s.stop()
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for _, worker := range wg.workerList {
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worker.stop()
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}
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}
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type baseWorker struct {
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events chan event
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done chan struct{}
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}
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var _ worker = (*baseWorker)(nil)
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func newWorker() *baseWorker {
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return &baseWorker{
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events: make(chan event),
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done: make(chan struct{}),
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}
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}
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func (w *baseWorker) start(s *state) {
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for {
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select {
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case e := <-w.events:
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e.apply(s)
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case <-w.done:
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return
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}
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}
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}
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func (w *baseWorker) stop() {
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close(w.done)
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}
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func (w *baseWorker) send(e event) bool {
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select {
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case w.events <- e:
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return true
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case <-w.done:
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return false
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}
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}
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