Add container to monitor in runtime

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

linux/container.go

@@ -60,3 +60,13 @@ func (c *Container) State(ctx context.Context) (containerd.State, error) {
 		status: status,
 	}, nil
 }
+
+func (c *Container) Pause(ctx context.Context) error {
+	_, err := c.shim.Pause(ctx, &shim.PauseRequest{})
+	return err
+}
+
+func (c *Container) Resume(ctx context.Context) error {
+	_, err := c.shim.Resume(ctx, &shim.ResumeRequest{})
+	return err
+}

linux/runtime.go

@@ -54,6 +54,7 @@ func New(ic *plugin.InitContext) (interface{}, error) {
 		events:        make(chan *containerd.Event, 2048),
 		eventsContext: c,
 		eventsCancel:  cancel,
+		monitor:       ic.Monitor,
 	}, nil
 }
 
@@ -64,6 +65,7 @@ type Runtime struct {
 	events        chan *containerd.Event
 	eventsContext context.Context
 	eventsCancel  func()
+	monitor       plugin.ContainerMonitor
 }
 
 func (r *Runtime) Create(ctx context.Context, id string, opts containerd.CreateOpts) (containerd.Container, error) {
@@ -100,10 +102,15 @@ func (r *Runtime) Create(ctx context.Context, id string, opts containerd.CreateO
 		os.RemoveAll(path)
 		return nil, err
 	}
-	return &Container{
+	c := &Container{
 		id:   id,
 		shim: s,
-	}, nil
+	}
+	// after the container is create add it to the monitor
+	if err := r.monitor.Monitor(c); err != nil {
+		return nil, err
+	}
+	return c, nil
 }
 
 func (r *Runtime) Delete(ctx context.Context, c containerd.Container) (uint32, error) {
@@ -111,6 +118,11 @@ func (r *Runtime) Delete(ctx context.Context, c containerd.Container) (uint32, e
 	if !ok {
 		return 0, fmt.Errorf("container cannot be cast as *linux.Container")
 	}
+	// remove the container from the monitor
+	if err := r.monitor.Stop(lc); err != nil {
+		// TODO: log error here
+		return 0, err
+	}
 	rsp, err := lc.shim.Delete(ctx, &shim.DeleteRequest{})
 	if err != nil {
 		return 0, err

vendor.conf

@@ -1,7 +1,7 @@
 github.com/crosbymichael/go-runc bd9aef7cf4402a3a8728e3ef83dcca6a5a1be899
 github.com/crosbymichael/console 4bf9d88357031b516b3794a2594b6d060a29c59c
 github.com/crosbymichael/cgroups 66fd96cb5fc92fdcd32b61518b2619d489784256
-github.com/docker/go-metrics acacd9e96619af3f536a4118e207223208db0d96
+github.com/docker/go-metrics 8fd5772bf1584597834c6f7961a530f06cbfbb87
 github.com/prometheus/client_golang v0.8.0
 github.com/prometheus/client_model fa8ad6fec33561be4280a8f0514318c79d7f6cb6
 github.com/prometheus/common 195bde7883f7c39ea62b0d92ab7359b5327065cb

vendor/github.com/docker/go-metrics/namespace.go

@@ -152,7 +152,11 @@ func (n *Namespace) NewDesc(name, help string, unit Unit, labels ...string) *pro
 	if string(unit) != "" {
 		name = fmt.Sprintf("%s_%s", name, unit)
 	}
-	name = fmt.Sprintf("%s_%s_%s", n.name, n.subsystem, name)
+	namespace := n.name
+	if n.subsystem != "" {
+		namespace = fmt.Sprintf("%s_%s", namespace, n.subsystem)
+	}
+	name = fmt.Sprintf("%s_%s", namespace, name)
 	return prometheus.NewDesc(name, help, labels, prometheus.Labels(n.labels))
 }