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package main
import (
"os"
"os/exec"
"os/signal"
"strings"
"sync"
"syscall"
"time"
log "github.com/Sirupsen/logrus"
"github.com/kr/beanstalk"
)
// beanstalkd, the message queue
type Queue struct {
Conn *beanstalk.Conn
Tube *beanstalk.Tube
}
func (app *Queue) newBeanstalkd() error {
conn, err := beanstalk.Dial("tcp", "192.168.122.1:11300")
//conn, err := beanstalk.Dial("tcp", "127.0.0.1:11300")
if err != nil {
return err
}
app.Conn = conn
app.Tube = &beanstalk.Tube{conn, "gospelchor"}
return nil
}
func main() {
app := Queue{}
err := app.newBeanstalkd()
if err != nil {
log.WithFields(
log.Fields{
"error": err,
},
).Fatal("cannot connect to beanstalkd")
}
// closes the connection to the beanstalkd server on exit
defer func() {
app.Conn.Close()
}()
cntGoRoutine := 0
// we will ensure that we wait for the same number
// of routines to complete by using a waitGroup
waitGroup := &sync.WaitGroup{}
waitGroup.Add(cntGoRoutine + 1)
shutdownChan := make(chan bool)
log.Println("app started. beginning consuming jobs...")
app.consumeJob(shutdownChan, waitGroup, 1)
// waits for shutting down
term := make(chan os.Signal, 1)
signal.Notify(term, os.Interrupt)
signal.Notify(term, syscall.SIGTERM)
<-term
// sends the signal to close to the workers
// +1 because we have a separate goroutine
// to check for buried jobs
for i := 0; i < cntGoRoutine+1; i++ {
go func() {
shutdownChan <- true
}()
}
// we wait, until they complete
log.Info("waiting for goroutine to finish")
waitGroup.Wait()
}
func (app *Queue) consumeJob(shutdownChannel chan bool, waitGroup *sync.WaitGroup, number int) {
tubeset := beanstalk.NewTubeSet(app.Conn, "gospelchor")
// we tell when we return
defer waitGroup.Done()
// Looping to consume all Jobs
for {
select {
case _ = <-shutdownChannel:
log.WithFields(
log.Fields{
"goroutine_id": number + 1,
},
).Info("getting message to return: ")
return
default:
id, body, err := tubeset.Reserve(60 * time.Second)
if err != nil {
//log.Println(err)
continue
}
log.WithFields(
log.Fields{
"job_id": id,
},
).Info("recieving job")
/*
err = json.Unmarshal(body)
if err != nil {
app.Conn.Bury(id, 1)
log.WithFields(
log.Fields{
"job_id": id,
"error": err,
},
).Warn("decoding json failed")
continue
}
*/
if !strings.EqualFold(string(body), "true") {
app.Conn.Bury(id, 1)
continue
}
// rsync den ordner rüber
cmdArgs := []string{"--delete", "-avz", "-e ssh", "applications:/var/www/gospeladlershof.de/gospeladlershof.de/", "/var/www/gospeladlershof.de/gospeladlershof.de/"}
if _, err = exec.Command("rsync", cmdArgs...).Output(); err != nil {
log.WithFields(
log.Fields{
"error": err,
},
).Warn("fatal error using rsync")
app.Conn.Bury(id, 1)
} else {
log.Println("seite synchronisiert")
// Deleting the job from beanstalkd
app.Conn.Delete(id)
}
}
}
}
|
