// WriteLogs handles an http request from the agent to stream build logs from
// the agent to the server to enable real time streamings to the client.
func WriteLogs(c *gin.Context) {
id, err := strconv.ParseInt(c.Param("id"), 10, 64)
if err != nil {
c.String(500, "Invalid input. %s", err)
return
}
conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
if err != nil {
c.String(500, "Cannot upgrade to websocket. %s", err)
return
}
defer conn.Close()
wc, err := stream.Writer(c, stream.ToKey(id))
if err != nil {
c.String(500, "Cannot create stream writer. %s", err)
return
}
defer func() {
wc.Close()
stream.Delete(c, stream.ToKey(id))
}()
var msg []byte
for {
_, msg, err = conn.ReadMessage()
if err != nil {
break
}
wc.Write(msg)
wc.Write(newline)
}
if err != nil && err != io.EOF {
c.String(500, "Error reading logs. %s", err)
return
}
//
// rc, err := stream.Reader(c, stream.ToKey(id))
// if err != nil {
// c.String(500, "Failed to create stream reader. %s", err)
// return
// }
//
// wg := sync.WaitGroup{}
// wg.Add(1)
//
// go func() {
// defer recover()
// store.WriteLog(c, &model.Job{ID: id}, rc)
// wg.Done()
// }()
//
// wc.Close()
// wg.Wait()
}
func GetStream(c *gin.Context) {
repo := session.Repo(c)
buildn, _ := strconv.Atoi(c.Param("build"))
jobn, _ := strconv.Atoi(c.Param("number"))
c.Writer.Header().Set("Content-Type", "text/event-stream")
build, err := store.GetBuildNumber(c, repo, buildn)
if err != nil {
log.Debugln("stream cannot get build number.", err)
c.AbortWithError(404, err)
return
}
job, err := store.GetJobNumber(c, build, jobn)
if err != nil {
log.Debugln("stream cannot get job number.", err)
c.AbortWithError(404, err)
return
}
rc, err := stream.Reader(c, stream.ToKey(job.ID))
if err != nil {
c.AbortWithError(404, err)
return
}
go func() {
<-c.Writer.CloseNotify()
rc.Close()
}()
var line int
var scanner = bufio.NewScanner(rc)
for scanner.Scan() {
line++
var err = sse.Encode(c.Writer, sse.Event{
Id: strconv.Itoa(line),
Event: "message",
Data: scanner.Text(),
})
if err != nil {
break
}
c.Writer.Flush()
}
log.Debugf("Closed stream %s#%d", repo.FullName, build.Number)
}
// Pull is a long request that polls and attemts to pull work off the queue stack.
func Pull(c *gin.Context) {
logrus.Debugf("Agent %s connected.", c.ClientIP())
w := queue.PullClose(c, c.Writer)
if w == nil {
logrus.Debugf("Agent %s could not pull work.", c.ClientIP())
} else {
// setup the channel to stream logs
if err := stream.Create(c, stream.ToKey(w.Job.ID)); err != nil {
logrus.Errorf("Unable to create stream. %s", err)
}
c.JSON(202, w)
logrus.Debugf("Agent %s assigned work. %s/%s#%d.%d",
c.ClientIP(),
w.Repo.Owner,
w.Repo.Name,
w.Build.Number,
w.Job.Number,
)
}
}
// Update handles build updates from the agent and persists to the database.
func Update(c *gin.Context) {
work := &queue.Work{}
if err := c.BindJSON(work); err != nil {
logrus.Errorf("Invalid input. %s", err)
return
}
// TODO(bradrydzewski) it is really annoying that we have to do this lookup
// and I'd prefer not to. The reason we do this is because the Build and Job
// have fields that aren't serialized to json and would be reset to their
// empty values if we just saved what was coming in the http.Request body.
build, err := store.GetBuild(c, work.Build.ID)
if err != nil {
c.String(404, "Unable to find build. %s", err)
return
}
job, err := store.GetJob(c, work.Job.ID)
if err != nil {
c.String(404, "Unable to find job. %s", err)
return
}
build.Started = work.Build.Started
build.Finished = work.Build.Finished
build.Status = work.Build.Status
job.Started = work.Job.Started
job.Finished = work.Job.Finished
job.Status = work.Job.Status
job.ExitCode = work.Job.ExitCode
if build.Status == model.StatusPending {
build.Status = model.StatusRunning
store.UpdateBuild(c, build)
}
if job.Status == model.StatusRunning {
err := stream.Create(c, stream.ToKey(job.ID))
if err != nil {
logrus.Errorf("Unable to create stream. %s", err)
}
}
ok, err := store.UpdateBuildJob(c, build, job)
if err != nil {
c.String(500, "Unable to update job. %s", err)
return
}
if ok && build.Status != model.StatusRunning {
// get the user because we transfer the user form the server to agent
// and back we lose the token which does not get serialized to json.
user, err := store.GetUser(c, work.User.ID)
if err != nil {
c.String(500, "Unable to find user. %s", err)
return
}
remote.Status(c, user, work.Repo, build,
fmt.Sprintf("%s/%s/%d", work.System.Link, work.Repo.FullName, work.Build.Number))
}
if build.Status == model.StatusRunning {
bus.Publish(c, bus.NewEvent(bus.Started, work.Repo, build, job))
} else {
bus.Publish(c, bus.NewEvent(bus.Finished, work.Repo, build, job))
}
c.JSON(200, work)
}