feat(poller): support scheduler to fetch task and dispatch to worker
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parent
5fc35faf17
commit
a13ed0c52e
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@ -59,6 +59,7 @@ func runDaemon(ctx context.Context, envFile string) func(cmd *cobra.Command, arg
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poller := poller.New(
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cli,
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runner.Run,
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cfg.Runner.Capacity,
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)
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g.Go(func() error {
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@ -81,7 +82,7 @@ func runDaemon(ctx context.Context, envFile string) func(cmd *cobra.Command, arg
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Errorln("failed to update runner")
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}
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return poller.Poll(ctx, cfg.Runner.Capacity)
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return poller.Poll(ctx)
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})
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g.Go(func() error {
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166
poller/poller.go
166
poller/poller.go
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@ -3,6 +3,7 @@ package poller
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import (
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"context"
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"errors"
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"sync"
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"time"
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"gitea.com/gitea/act_runner/client"
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@ -14,12 +15,13 @@ import (
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var ErrDataLock = errors.New("Data Lock Error")
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func New(cli client.Client, dispatch func(context.Context, *runnerv1.Task) error) *Poller {
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func New(cli client.Client, dispatch func(context.Context, *runnerv1.Task) error, workerNum int) *Poller {
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return &Poller{
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Client: cli,
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Dispatch: dispatch,
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routineGroup: newRoutineGroup(),
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metric: &metric{},
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workerNum: workerNum,
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}
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}
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@ -28,83 +30,60 @@ type Poller struct {
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Filter *client.Filter
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Dispatch func(context.Context, *runnerv1.Task) error
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sync.Mutex
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routineGroup *routineGroup
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metric *metric
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ready chan struct{}
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workerNum int
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}
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func (p *Poller) Wait() {
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p.routineGroup.Wait()
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}
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func (p *Poller) Poll(ctx context.Context, n int) error {
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for i := 0; i < n; i++ {
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func(i int) {
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p.routineGroup.Run(func() {
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func (p *Poller) schedule() {
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p.Lock()
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defer p.Unlock()
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if int(p.metric.BusyWorkers()) >= p.workerNum {
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return
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}
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select {
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case p.ready <- struct{}{}:
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default:
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}
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}
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func (p *Poller) Poll(ctx context.Context) error {
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l := log.WithField("func", "Poll")
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for {
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// check worker number
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p.schedule()
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select {
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// wait worker ready
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case <-p.ready:
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case <-ctx.Done():
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return nil
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}
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LOOP:
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for {
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select {
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case <-ctx.Done():
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log.Infof("stopped the runner: %d", i+1)
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return
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break LOOP
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default:
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if ctx.Err() != nil {
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log.Infof("stopping the runner: %d", i+1)
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return
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}
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if err := p.poll(ctx, i+1); err != nil {
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log.WithField("thread", i+1).
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WithError(err).Error("poll error")
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select {
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case <-ctx.Done():
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return
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case <-time.After(5 * time.Second):
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}
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}
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}
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}
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})
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}(i)
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}
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p.routineGroup.Wait()
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return nil
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}
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func (p *Poller) poll(ctx context.Context, thread int) error {
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l := log.WithField("thread", thread)
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l.Info("poller: request stage from remote server")
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reqCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
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defer cancel()
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// request a new build stage for execution from the central
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// build server.
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resp, err := p.Client.FetchTask(reqCtx, connect.NewRequest(&runnerv1.FetchTaskRequest{}))
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if err == context.Canceled || err == context.DeadlineExceeded {
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l.WithError(err).Trace("poller: no stage returned")
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return nil
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}
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if err != nil && err == ErrDataLock {
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l.WithError(err).Info("task accepted by another runner")
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return nil
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}
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task, err := p.pollTask(ctx)
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if task == nil || err != nil {
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if err != nil {
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l.WithError(err).Error("cannot accept task")
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return err
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l.Errorf("can't find the task: %v", err.Error())
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}
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// exit if a nil or empty stage is returned from the system
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// and allow the runner to retry.
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if resp.Msg.Task == nil || resp.Msg.Task.Id == 0 {
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return nil
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time.Sleep(5 * time.Second)
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break
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}
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runCtx, cancel := context.WithTimeout(ctx, time.Hour)
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defer cancel()
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// update runner status
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// running: idle -> active
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// stopped: active -> idle
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if val := p.metric.IncBusyWorker(); val == 1 {
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if _, err := p.Client.UpdateRunner(
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ctx,
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@ -116,24 +95,77 @@ func (p *Poller) poll(ctx context.Context, thread int) error {
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}
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l.Info("update runner status to active")
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}
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defer func() {
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if val := p.metric.DecBusyWorker(); val != 0 {
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return
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p.routineGroup.Run(func() {
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if err := p.dispatchTask(ctx, task); err != nil {
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l.Errorf("execute task: %v", err.Error())
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}
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})
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break LOOP
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}
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}
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}
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}
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func (p *Poller) pollTask(ctx context.Context) (*runnerv1.Task, error) {
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l := log.WithField("func", "pollTask")
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l.Info("poller: request stage from remote server")
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reqCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
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defer cancel()
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// request a new build stage for execution from the central
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// build server.
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resp, err := p.Client.FetchTask(reqCtx, connect.NewRequest(&runnerv1.FetchTaskRequest{}))
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if err == context.Canceled || err == context.DeadlineExceeded {
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l.WithError(err).Trace("poller: no stage returned")
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return nil, nil
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}
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if err != nil && err == ErrDataLock {
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l.WithError(err).Info("task accepted by another runner")
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return nil, nil
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}
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if err != nil {
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l.WithError(err).Error("cannot accept task")
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return nil, err
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}
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// exit if a nil or empty stage is returned from the system
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// and allow the runner to retry.
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if resp.Msg.Task == nil || resp.Msg.Task.Id == 0 {
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return nil, nil
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}
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return resp.Msg.Task, nil
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}
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func (p *Poller) dispatchTask(ctx context.Context, task *runnerv1.Task) error {
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l := log.WithField("func", "dispatchTask")
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defer func() {
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val := p.metric.DecBusyWorker()
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e := recover()
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if e != nil {
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l.Errorf("panic error: %v", e)
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}
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p.schedule()
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if val != 0 {
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return
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}
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if _, err := p.Client.UpdateRunner(
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ctx,
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connect.NewRequest(&runnerv1.UpdateRunnerRequest{
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Status: runnerv1.RunnerStatus_RUNNER_STATUS_IDLE,
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}),
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); err != nil {
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log.Errorln("update status error:", err.Error())
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l.Errorln("update status error:", err.Error())
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}
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l.Info("update runner status to idle")
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}()
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}()
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return p.Dispatch(runCtx, resp.Msg.Task)
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runCtx, cancel := context.WithTimeout(ctx, time.Hour)
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defer cancel()
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return p.Dispatch(runCtx, task)
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}
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