events: add protos

Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: update events package to include emitter and use envelope proto Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: add events service Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: enable events service and update ctr events to use events service Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> event listeners Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: helper func for emitting in services Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: improved cli for containers and tasks Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> create event envelope with poster Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: introspect event data to use for type url Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: use pb encoding; add event types Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: instrument content and snapshot services with events Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: instrument image service with events Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: instrument namespace service with events Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: add namespace support Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: only send events from namespace requested from client Signed-off-by: Evan Hazlett <ejhazlett@gmail.com> events: switch to go-events for broadcasting Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
2017-06-02 15:06:38 -04:00
parent 7e3b7dead6
commit 935645b03a
50 changed files with 8290 additions and 69 deletions
--- a/services/events/service.go
+++ b/services/events/service.go
@@ -0,0 +1,55 @@
+package events
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/Sirupsen/logrus"
+	api "github.com/containerd/containerd/api/services/events"
+	"github.com/containerd/containerd/events"
+	"github.com/containerd/containerd/plugin"
+	"google.golang.org/grpc"
+)
+
+func init() {
+	plugin.Register(&plugin.Registration{
+		Type: plugin.GRPCPlugin,
+		ID:   "events",
+		Init: func(ic *plugin.InitContext) (interface{}, error) {
+			logrus.Debug(ic.Emitter)
+			return NewService(ic.Emitter), nil
+		},
+	})
+}
+
+type Service struct {
+	emitter  *events.Emitter
+	timeouts map[string]*time.Timer
+}
+
+func NewService(e *events.Emitter) api.EventsServer {
+	return &Service{emitter: e}
+}
+
+func (s *Service) Register(server *grpc.Server) error {
+	api.RegisterEventsServer(server, s)
+	return nil
+}
+
+func (s *Service) EventStream(req *api.EventStreamRequest, srv api.Events_EventStreamServer) error {
+	clientID := fmt.Sprintf("%d", time.Now().UnixNano())
+	for {
+		e := <-s.emitter.Events(srv.Context(), clientID)
+		// upon the client event timeout this will be nil; ignore
+		if e == nil {
+			return nil
+		}
+		if err := srv.Send(e); err != nil {
+			logrus.WithFields(logrus.Fields{
+				"client": clientID,
+			}).Debug("error sending event; unsubscribing client")
+			s.emitter.Remove(clientID)
+			return err
+		}
+	}
+}