containerd/worker.go

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package containerd
import (
"sync"
"time"
"github.com/Sirupsen/logrus"
"github.com/docker/containerd/runtime"
)
type Worker interface {
Start()
}
type StartTask struct {
Container runtime.Container
Checkpoint string
Err chan error
}
func NewWorker(s *Supervisor, wg *sync.WaitGroup) Worker {
return &worker{
s: s,
wg: wg,
}
}
type worker struct {
wg *sync.WaitGroup
s *Supervisor
}
func (w *worker) Start() {
defer w.wg.Done()
for t := range w.s.tasks {
started := time.Now()
logrus.WithFields(logrus.Fields{
"containerID": t.Container.ID(),
"checkpoint": t.Checkpoint,
"started": started,
}).Debug("worker received task")
if t.Checkpoint != "" {
if err := t.Container.Restore(t.Checkpoint); err != nil {
evt := NewEvent(DeleteEventType)
evt.ID = t.Container.ID()
w.s.SendEvent(evt)
t.Err <- err
continue
}
} else {
if err := t.Container.Start(); err != nil {
evt := NewEvent(DeleteEventType)
evt.ID = t.Container.ID()
w.s.SendEvent(evt)
t.Err <- err
continue
}
}
ContainerStartTimer.UpdateSince(started)
t.Err <- nil
}
}