/
worker.go
141 lines (122 loc) · 3.25 KB
/
worker.go
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package worker
import (
"errors"
"fmt"
"os"
"os/signal"
"sync"
"time"
"github.com/astaxie/beego"
"github.com/spf13/cobra"
"github.com/streadway/amqp"
"github.com/Qihoo360/wayne/src/backend/bus"
"github.com/Qihoo360/wayne/src/backend/initial"
"github.com/Qihoo360/wayne/src/backend/util/logs"
"github.com/Qihoo360/wayne/src/backend/workers"
"github.com/Qihoo360/wayne/src/backend/workers/audit"
"github.com/Qihoo360/wayne/src/backend/workers/webhook"
)
var (
WorkerCmd = &cobra.Command{
Use: "worker",
PreRunE: preRunE,
Run: run,
}
workerType string
concurrency int
lock sync.Mutex
availableRecovery = 3
)
func init() {
flags := WorkerCmd.Flags()
flags.SortFlags = false
flags.StringVarP(&workerType, "type", "t", "", "AuditWorker|WebhookWorker")
flags.IntVarP(&concurrency, "concurrency", "c", 1, "")
}
func preRunE(cmd *cobra.Command, args []string) error {
if workerType == "" {
return errors.New("missing worker type")
}
switch workerType {
case "AuditWorker", "WebhookWorker":
break
default:
return errors.New(fmt.Sprintf("unknown worker type: %s", workerType))
}
return nil
}
func run(cmd *cobra.Command, args []string) {
busEnable := beego.AppConfig.DefaultBool("BusEnable", false)
if !busEnable {
panic("Running workers requires BUS FEATURE enabled.")
}
initial.InitDb()
initial.InitBus()
workerSet := make(map[*workers.Worker]workers.Worker)
signalChan := make(chan os.Signal)
signal.Notify(signalChan, os.Interrupt)
signal.Notify(signalChan, os.Kill)
go func(ch chan os.Signal, workerSet map[*workers.Worker]workers.Worker) {
select {
case <-ch:
lock.Lock()
for _, w := range workerSet {
w.Stop()
}
}
}(signalChan, workerSet)
for {
logs.Info("Start worker.......")
var err error
bus.DefaultBus, err = bus.NewBus(beego.AppConfig.String("BusRabbitMQURL"))
if err != nil {
logs.Critical("Connection bus error. Will retry connection after 5 second.", err)
time.Sleep(5 * time.Second)
continue
}
workerSet = make(map[*workers.Worker]workers.Worker)
wg := &sync.WaitGroup{}
for i := 0; i < concurrency; i++ {
wg.Add(1)
recoverableWorker(workerSet, workerType, wg)
wg.Done()
}
wg.Wait()
// Waits here for the channel to be closed,Let Handle know it's not time to reconnect
logs.Warning("Receive closing error, will stop all working worker: ",
<-bus.DefaultBus.Conn.NotifyClose(make(chan *amqp.Error)))
for _, w := range workerSet {
err := w.Stop()
if err != nil {
logs.Error("Stop worker (%v) error. %v", w, err)
}
}
}
}
func recoverableWorker(workerSet map[*workers.Worker]workers.Worker, workerType string, wg *sync.WaitGroup) {
lock.Lock()
defer lock.Unlock()
var worker workers.Worker
var err error
switch workerType {
case "AuditWorker":
worker, err = audit.NewAuditWorker(bus.DefaultBus)
case "WebhookWorker":
worker, err = webhook.NewWebhookWorker(bus.DefaultBus)
default:
err = fmt.Errorf("unknown worker type: %s", workerType)
}
if err != nil {
logs.Critical(err)
return
}
go func() {
// TODO run retry specified numbers, then exit
err := worker.Run()
if err != nil {
logs.Critical("Run worker error.Will try rerun after 5 second.", err)
wg.Add(1)
}
}()
workerSet[&worker] = worker
}