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main.go
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main.go
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/*
* Tencent is pleased to support the open source community by making 蓝鲸 available.
* Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
* Licensed under the MIT License (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
* http://opensource.org/licenses/MIT
* 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 main
import (
"configcenter/src/common"
"configcenter/src/common/util"
"configcenter/src/framework/api"
"configcenter/src/framework/core/config"
"configcenter/src/framework/core/discovery"
"configcenter/src/framework/core/httpserver"
"configcenter/src/framework/core/log"
"configcenter/src/framework/core/monitor/metric"
"configcenter/src/framework/core/option"
"configcenter/src/framework/core/output/module/client"
"time"
"configcenter/src/common/blog"
"fmt"
"github.com/spf13/pflag"
"os"
"os/signal"
"runtime"
"syscall"
_ "configcenter/src/framework/plugins" // load all plugins
)
// APPNAME the name of this application, will be use as identification mark for monitoring
const APPNAME = "DemoApp"
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
opt := &option.Options{AppName: APPNAME}
opt.AddFlags(pflag.CommandLine)
util.InitFlags()
blog.InitLogs()
log.SetLoger(&log.Logger{
Info: func(args ...interface{}) {
blog.Info("%v", args)
},
Infof: blog.Infof,
Fatal: blog.Fatal,
Fatalf: blog.Fatalf,
Error: func(args ...interface{}) {
blog.Error("%v", args)
},
Errorf: blog.Errorf,
})
if err := config.Init(opt); err != nil {
log.Errorf("init config error: %v", err)
return
}
server, err := httpserver.NewServer(opt)
if err != nil {
log.Errorf("NewServer error: %v", err)
return
}
if "" != opt.Regdiscv {
rd := discovery.NewRegDiscover(APPNAME, opt.Regdiscv, server.GetAddr(), server.GetPort(), false)
go func() {
rd.Start()
}()
for {
_, err := rd.GetApiServ()
if err == nil {
break
}
log.Errorf("there is no api server, will reget it after 2s")
time.Sleep(time.Second * 2)
}
client.NewForConfig(config.Get(), rd)
} else {
client.NewForConfig(config.Get(), nil)
}
api.Init()
defer func() {
blog.CloseLogs()
api.UnInit()
}()
// init the framework
if err := common.SavePid(); nil != err {
fmt.Printf("\n can not save the pidfile, error info is %s\n", err.Error())
return
}
metricManager := metric.NewManager(opt)
server.RegisterActions(api.Actions()...)
server.RegisterActions(metricManager.Actions()...)
httpChan := make(chan error)
go func() { httpChan <- server.ListenAndServe() }()
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM, syscall.SIGUSR1)
select {
case err := <-httpChan:
log.Errorf("http exit, error: %v", err)
return
case s := <-sigs:
switch s {
case syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT:
fmt.Println("the signal:", s.String())
case syscall.SIGURG:
// the reserved
case syscall.SIGUSR1:
// the reserved
case syscall.SIGUSR2:
default:
fmt.Printf("\nunknown the signal (%s) \n", s.String())
}
}
}