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schedule_job.go
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schedule_job.go
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// Copyright 2019 The Vearch Authors.
//
// Licensed 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 router
import (
"time"
"github.com/vearch/vearch/config"
"github.com/vearch/vearch/proto/entity"
"github.com/vearch/vearch/util/log"
)
const KeepAliveTime = 10
// this job for heartbeat master 1m once
func (s *Server) StartHeartbeatJob(addr string) {
go func() {
var key string = config.Conf().Global.Name
log.Debugf("register key: [%s], routerIP: [%s]", key, addr)
keepaliveC, err := s.cli.Master().Store.KeepAlive(s.ctx, entity.RouterKey(key, addr), []byte(addr), time.Second*KeepAliveTime)
if err != nil {
log.Error("KeepAlive err: %s", err.Error())
return
}
for {
select {
case <-s.ctx.Done():
log.Error("keep alive ctx done!")
return
case ka, ok := <-keepaliveC:
if !ok {
log.Error("keep alive channel closed!")
time.Sleep(2 * time.Second)
keepaliveC, err = s.cli.Master().Store.KeepAlive(s.ctx, entity.RouterKey(key, addr), []byte(addr), time.Second*KeepAliveTime)
if err != nil {
log.Errorf("KeepAlive err: %s", err.Error())
}
continue
}
log.Debugf("Receive keepalive, leaseId: %d, ttl:%d", ka.ID, ka.TTL)
}
}
}()
}