package poller import ( "context" "errors" "time" "gitea.com/gitea/act_runner/client" runnerv1 "gitea.com/gitea/proto-go/runner/v1" "github.com/bufbuild/connect-go" log "github.com/sirupsen/logrus" ) const ( errorRetryCounterLimit = 3 errorRetryTimeSleepSecs = 30 ) var ( ErrDataLock = errors.New("Data Lock Error") defaultLabels = []string{"self-hosted"} ) func New(cli client.Client, dispatch func(context.Context, *runnerv1.Task) error) *Poller { return &Poller{ Client: cli, Dispatch: dispatch, routineGroup: newRoutineGroup(), } } type Poller struct { Client client.Client Filter *client.Filter Dispatch func(context.Context, *runnerv1.Task) error routineGroup *routineGroup errorRetryCounter int } func (p *Poller) Poll(ctx context.Context, n int) error { for i := 0; i < n; i++ { func(i int) { p.routineGroup.Run(func() { for { select { case <-ctx.Done(): log.Infof("stopped the runner: %d", i+1) return default: if ctx.Err() != nil { log.Infof("stopping the runner: %d", i+1) return } if err := p.poll(ctx, i+1); err != nil { log.WithField("thread", i+1). WithError(err).Error("poll error") if p.errorRetryCounter > errorRetryCounterLimit { log.WithField("thread", i+1).Error("poller: too many errors, sleeping for 30 seconds") // FIXME: it makes ctrl+c hang up time.Sleep(time.Second * errorRetryTimeSleepSecs) } } } } }) }(i) } p.routineGroup.Wait() return nil } func (p *Poller) poll(ctx context.Context, thread int) error { l := log.WithField("thread", thread) l.Info("poller: request stage from remote server") reqCtx, cancel := context.WithTimeout(ctx, 5*time.Second) defer cancel() // request a new build stage for execution from the central // build server. resp, err := p.Client.FetchTask(reqCtx, connect.NewRequest(&runnerv1.FetchTaskRequest{})) if err == context.Canceled || err == context.DeadlineExceeded { l.WithError(err).Trace("poller: no stage returned") p.errorRetryCounter++ return nil } if err != nil && err == ErrDataLock { l.WithError(err).Info("task accepted by another runner") p.errorRetryCounter++ return nil } if err != nil { l.WithError(err).Error("cannot accept task") p.errorRetryCounter++ return err } // exit if a nil or empty stage is returned from the system // and allow the runner to retry. if resp.Msg.Task == nil || resp.Msg.Task.Id == 0 { return nil } p.errorRetryCounter = 0 runCtx, cancel := context.WithTimeout(ctx, time.Hour) defer cancel() return p.Dispatch(runCtx, resp.Msg.Task) }