func (e *engine) Schedule(c context.Context, req *Task) {
node := <-e.pool.reserve()
// since we are probably running in a go-routine
// make sure we recover from any panics so that
// a bug doesn't crash the whole system.
defer func() {
if err := recover(); err != nil {
const size = 64 << 10
buf := make([]byte, size)
buf = buf[:runtime.Stack(buf, false)]
log.Errorf("panic running build: %v\n%s", err, string(buf))
}
e.pool.release(node)
}()
// update the node that was allocated to each job
func(id int64) {
for _, job := range req.Jobs {
job.NodeID = id
store.UpdateJob(c, job)
}
}(node.ID)
// run the full build!
client, err := newDockerClient(node.Addr, node.Cert, node.Key, node.CA)
if err != nil {
log.Errorln("error creating docker client", err)
}
// update the build state if any of the sub-tasks
// had a non-success status
req.Build.Started = time.Now().UTC().Unix()
req.Build.Status = model.StatusRunning
e.updater.SetBuild(c, req)
// run all bulid jobs
for _, job := range req.Jobs {
req.Job = job
e.runJob(c, req, e.updater, client)
}
// update overall status based on each job
req.Build.Status = model.StatusSuccess
for _, job := range req.Jobs {
if job.Status != model.StatusSuccess {
req.Build.Status = job.Status
break
}
}
req.Build.Finished = time.Now().UTC().Unix()
err = e.updater.SetBuild(c, req)
if err != nil {
log.Errorf("error updating build completion status. %s", err)
}
// run notifications
err = e.runJobNotify(req, client)
if err != nil {
log.Errorf("error executing notification step. %s", err)
}
}
func PostBuild(c *gin.Context) {
remote_ := remote.FromContext(c)
repo := session.Repo(c)
fork := c.DefaultQuery("fork", "false")
num, err := strconv.Atoi(c.Param("number"))
if err != nil {
c.AbortWithError(http.StatusBadRequest, err)
return
}
user, err := store.GetUser(c, repo.UserID)
if err != nil {
log.Errorf("failure to find repo owner %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
build, err := store.GetBuildNumber(c, repo, num)
if err != nil {
log.Errorf("failure to get build %d. %s", num, err)
c.AbortWithError(404, err)
return
}
// if the remote has a refresh token, the current access token
// may be stale. Therefore, we should refresh prior to dispatching
// the job.
if refresher, ok := remote_.(remote.Refresher); ok {
ok, _ := refresher.Refresh(user)
if ok {
store.UpdateUser(c, user)
}
}
// fetch the .drone.yml file from the database
raw, sec, err := remote_.Script(user, repo, build)
if err != nil {
log.Errorf("failure to get .drone.yml for %s. %s", repo.FullName, err)
c.AbortWithError(404, err)
return
}
key, _ := store.GetKey(c, repo)
netrc, err := remote_.Netrc(user, repo)
if err != nil {
log.Errorf("failure to generate netrc for %s. %s", repo.FullName, err)
c.AbortWithError(500, err)
return
}
jobs, err := store.GetJobList(c, build)
if err != nil {
log.Errorf("failure to get build %d jobs. %s", build.Number, err)
c.AbortWithError(404, err)
return
}
// must not restart a running build
if build.Status == model.StatusPending || build.Status == model.StatusRunning {
c.String(409, "Cannot re-start a started build")
return
}
// forking the build creates a duplicate of the build
// and then executes. This retains prior build history.
if forkit, _ := strconv.ParseBool(fork); forkit {
build.ID = 0
build.Number = 0
for _, job := range jobs {
job.ID = 0
job.NodeID = 0
}
err := store.CreateBuild(c, build, jobs...)
if err != nil {
c.String(500, err.Error())
return
}
}
// todo move this to database tier
// and wrap inside a transaction
build.Status = model.StatusPending
build.Started = 0
build.Finished = 0
build.Enqueued = time.Now().UTC().Unix()
for _, job := range jobs {
job.Status = model.StatusPending
job.Started = 0
job.Finished = 0
job.ExitCode = 0
job.NodeID = 0
job.Enqueued = build.Enqueued
store.UpdateJob(c, job)
}
err = store.UpdateBuild(c, build)
if err != nil {
c.AbortWithStatus(500)
return
}
c.JSON(202, build)
// get the previous build so taht we can send
// on status change notifications
last, _ := store.GetBuildLastBefore(c, repo, build.Branch, build.ID)
engine_ := context.Engine(c)
go engine_.Schedule(c.Copy(), &engine.Task{
User: user,
Repo: repo,
Build: build,
BuildPrev: last,
Jobs: jobs,
Keys: key,
Netrc: netrc,
Config: string(raw),
Secret: string(sec),
System: &model.System{
Link: httputil.GetURL(c.Request),
Plugins: strings.Split(os.Getenv("PLUGIN_FILTER"), " "),
Globals: strings.Split(os.Getenv("PLUGIN_PARAMS"), " "),
},
})
}