Merge pull request #2958 from crosbymichael/runcv2-events

Move task events to runc v2 shim

runtime/v2/runc/service.go

@@ -95,6 +95,7 @@ func New(ctx context.Context, id string, publisher events.Publisher) (shim.Shim,
 // service is the shim implementation of a remote shim over GRPC
 type service struct {
 	mu          sync.Mutex
+	eventSendMu sync.Mutex
 
 	context   context.Context
 	task      rproc.Process
@@ -311,6 +312,21 @@ func (s *service) Create(ctx context.Context, r *taskAPI.CreateTaskRequest) (_ *
 		s.cg = cg
 	}
 	s.task = process
+
+	s.send(&eventstypes.TaskCreate{
+		ContainerID: r.ID,
+		Bundle:      r.Bundle,
+		Rootfs:      r.Rootfs,
+		IO: &eventstypes.TaskIO{
+			Stdin:    r.Stdin,
+			Stdout:   r.Stdout,
+			Stderr:   r.Stderr,
+			Terminal: r.Terminal,
+		},
+		Checkpoint: r.Checkpoint,
+		Pid:        uint32(pid),
+	})
+
 	return &taskAPI.CreateTaskResponse{
 		Pid: uint32(pid),
 	}, nil
@@ -323,9 +339,14 @@ func (s *service) Start(ctx context.Context, r *taskAPI.StartRequest) (*taskAPI.
 	if err != nil {
 		return nil, err
 	}
+
+	// hold the send lock so that the start events are sent before any exit events in the error case
+	s.eventSendMu.Lock()
 	if err := p.Start(ctx); err != nil {
+		s.eventSendMu.Unlock()
 		return nil, err
 	}
+
 	// case for restore
 	if s.getCgroup() == nil && p.Pid() > 0 {
 		cg, err := cgroups.Load(cgroups.V1, cgroups.PidPath(p.Pid()))
@@ -334,6 +355,19 @@ func (s *service) Start(ctx context.Context, r *taskAPI.StartRequest) (*taskAPI.
 		}
 		s.setCgroup(cg)
 	}
+	if r.ExecID != "" {
+		s.send(&eventstypes.TaskExecStarted{
+			ContainerID: s.id,
+			ExecID:      r.ExecID,
+			Pid:         uint32(p.Pid()),
+		})
+	} else {
+		s.send(&eventstypes.TaskStart{
+			ContainerID: s.id,
+			Pid:         uint32(p.Pid()),
+		})
+	}
+	s.eventSendMu.Unlock()
 	return &taskAPI.StartResponse{
 		Pid: uint32(p.Pid()),
 	}, nil
@@ -357,9 +391,17 @@ func (s *service) Delete(ctx context.Context, r *taskAPI.DeleteRequest) (*taskAP
 		delete(s.processes, r.ExecID)
 		s.mu.Unlock()
 	}
-	if isTask && s.platform != nil {
+	if isTask {
+		if s.platform != nil {
 			s.platform.Close()
 		}
+		s.send(&eventstypes.TaskDelete{
+			ContainerID: s.id,
+			Pid:         uint32(p.Pid()),
+			ExitStatus:  uint32(p.ExitStatus()),
+			ExitedAt:    p.ExitedAt(),
+		})
+	}
 	return &taskAPI.DeleteResponse{
 		ExitStatus: uint32(p.ExitStatus()),
 		ExitedAt:   p.ExitedAt(),
@@ -393,6 +435,11 @@ func (s *service) Exec(ctx context.Context, r *taskAPI.ExecProcessRequest) (*pty
 	s.mu.Lock()
 	s.processes[r.ExecID] = process
 	s.mu.Unlock()
+
+	s.send(&eventstypes.TaskExecAdded{
+		ContainerID: s.id,
+		ExecID:      process.ID(),
+	})
 	return empty, nil
 }
 
@@ -461,6 +508,9 @@ func (s *service) Pause(ctx context.Context, r *taskAPI.PauseRequest) (*ptypes.E
 	if err := p.(*proc.Init).Pause(ctx); err != nil {
 		return nil, err
 	}
+	s.send(&eventstypes.TaskPaused{
+		p.ID(),
+	})
 	return empty, nil
 }
 
@@ -475,6 +525,9 @@ func (s *service) Resume(ctx context.Context, r *taskAPI.ResumeRequest) (*ptypes
 	if err := p.(*proc.Init).Resume(ctx); err != nil {
 		return nil, err
 	}
+	s.send(&eventstypes.TaskResumed{
+		p.ID(),
+	})
 	return empty, nil
 }
 
@@ -642,6 +695,16 @@ func (s *service) processExits() {
 	}
 }
 
+func (s *service) send(evt interface{}) {
+	s.events <- evt
+}
+
+func (s *service) sendL(evt interface{}) {
+	s.eventSendMu.Lock()
+	s.events <- evt
+	s.eventSendMu.Unlock()
+}
+
 func (s *service) checkProcesses(e runcC.Exit) {
 	shouldKillAll, err := shouldKillAllOnExit(s.bundle)
 	if err != nil {
@@ -660,13 +723,13 @@ func (s *service) checkProcesses(e runcC.Exit) {
 				}
 			}
 			p.SetExited(e.Status)
-			s.events <- &eventstypes.TaskExit{
+			s.sendL(&eventstypes.TaskExit{
 				ContainerID: s.id,
 				ID:          p.ID(),
 				Pid:         uint32(e.Pid),
 				ExitStatus:  uint32(e.Status),
 				ExitedAt:    p.ExitedAt(),
-			}
+			})
 			return
 		}
 	}