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65 lines
1.5 KiB
65 lines
1.5 KiB
/*
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* Copyright 2020-2021 the original author(https://github.com/wj596)
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*
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* <p>
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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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* </p>
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*/
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package service
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import (
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"log"
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"go-mysql-transfer/global"
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"go-mysql-transfer/metrics"
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)
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type ClusterService struct {
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electionSignal chan bool //选举信号
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}
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func (s *ClusterService) boot() error {
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log.Println("start master election")
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err := _electionService.Elect()
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if err != nil {
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return err
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}
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s.startElectListener()
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return nil
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}
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func (s *ClusterService) startElectListener() {
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go func() {
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for {
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select {
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case selected := <-s.electionSignal:
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global.SetLeaderNode(_electionService.Leader())
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global.SetLeaderFlag(selected)
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if selected {
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metrics.SetLeaderState(metrics.LeaderState)
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_transferService.StartUp()
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} else {
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metrics.SetLeaderState(metrics.FollowerState)
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_transferService.stopDump()
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}
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}
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}
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}()
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}
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func (s *ClusterService) Nodes() []string {
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return _electionService.Nodes()
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}
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