support 1.10 events

Signed-off-by: Victor Vieux <vieux@docker.com>

api/events.go

@@ -1,6 +1,7 @@
 package api
 
 import (
+	"encoding/json"
 	"fmt"
 	"io"
 	"net/http"
@@ -10,8 +11,6 @@ import (
 	"github.com/docker/swarm/cluster"
 )
 
-const eventFmt string = "{%q:%q,%q:%q,%q:%q,%q:%d,%q:{%q:%q,%q:%q,%q:%q,%q:%q}}\n"
-
 // EventsHandler broadcasts events to multiple client listeners.
 type eventsHandler struct {
 	sync.RWMutex
@@ -76,21 +75,42 @@ func (eh *eventsHandler) cleanupHandler(remoteAddr string) {
 func (eh *eventsHandler) Handle(e *cluster.Event) error {
 	eh.RLock()
 
-	str := fmt.Sprintf(eventFmt,
-		"status", e.Status,
-		"id", e.Id,
-		"from", e.From+" node:"+e.Engine.Name,
-		"time", e.Time,
+	// remove this hack once 1.10 is broadly adopted
+	from := e.From
+	e.From = e.From + " node:" + e.Engine.Name
+
+	// Attributes will be nil if the event was sent by engine < 1.10
+	if e.Actor.Attributes == nil {
+		e.Actor.Attributes = make(map[string]string)
+	}
+	e.Actor.Attributes["node.name"] = e.Engine.Name
+	e.Actor.Attributes["node.id"] = e.Engine.ID
+	e.Actor.Attributes["node.addr"] = e.Engine.Addr
+	e.Actor.Attributes["node.ip"] = e.Engine.IP
+
+	data, err := json.Marshal(e)
+	e.From = from
+	if err != nil {
+		return err
+	}
+
+	// remove the node field once 1.10 is broadly adopted & interlock stop relying on it
+	node := fmt.Sprintf(",%q:{%q:%q,%q:%q,%q:%q,%q:%q}}",
 		"node",
 		"Name", e.Engine.Name,
 		"Id", e.Engine.ID,
 		"Addr", e.Engine.Addr,
-		"Ip", e.Engine.IP)
+		"Ip", e.Engine.IP,
+	)
+
+	// insert Node field
+	data = data[:len(data)-1]
+	data = append(data, []byte(node)...)
 
 	var failed []string
 
 	for key, w := range eh.ws {
-		if _, err := fmt.Fprintf(w, str); err != nil {
+		if _, err := fmt.Fprintf(w, string(data)); err != nil {
 			// collect them to handle later under Lock
 			failed = append(failed, key)
 			continue

api/events_test.go

@@ -1,6 +1,7 @@
 package api
 
 import (
+	"encoding/json"
 	"fmt"
 	"testing"
 
@@ -36,22 +37,33 @@ func TestHandle(t *testing.T) {
 	}
 
 	event.Event.Status = "status"
-	event.Event.Id = "id"
+	event.Event.ID = "id"
 	event.Event.From = "from"
 	event.Event.Time = 0
+	event.Actor.Attributes = make(map[string]string)
+	event.Actor.Attributes["nodevent.name"] = event.Engine.Name
+	event.Actor.Attributes["nodevent.id"] = event.Engine.ID
+	event.Actor.Attributes["nodevent.addr"] = event.Engine.Addr
+	event.Actor.Attributes["nodevent.ip"] = event.Engine.IP
 
 	assert.NoError(t, eh.Handle(event))
 
-	str := fmt.Sprintf(eventFmt,
-		"status", "status",
-		"id", "id",
-		"from", "from node:node_name",
-		"time", 0,
-		"node",
-		"Name", "node_name",
-		"Id", "node_id",
-		"Addr", "node_addr",
-		"Ip", "node_ip")
+	event.Event.From = "from node:node_name"
 
-	assert.Equal(t, str, string(fw.Tmp))
+	data, err := json.Marshal(event)
+	assert.NoError(t, err)
+
+	node := fmt.Sprintf(",%q:{%q:%q,%q:%q,%q:%q,%q:%q}}",
+		"node",
+		"Name", event.Engine.Name,
+		"Id", event.Engine.ID,
+		"Addr", event.Engine.Addr,
+		"Ip", event.Engine.IP,
+	)
+
+	// insert Node field
+	data = data[:len(data)-1]
+	data = append(data, []byte(node)...)
+
+	assert.Equal(t, string(data), string(fw.Tmp))
 }

cli/manage.go

@@ -34,7 +34,7 @@ type logHandler struct {
 }
 
 func (h *logHandler) Handle(e *cluster.Event) error {
-	id := e.Id
+	id := e.ID
 	// Trim IDs to 12 chars.
 	if len(id) > 12 {
 		id = id[:12]

cluster/engine.go

@@ -145,7 +145,7 @@ func (e *Engine) Connect(config *tls.Config) error {
 	}
 	e.IP = addr.IP.String()
 
-	c, err := dockerclient.NewDockerClientTimeout("tcp://"+e.Addr, config, time.Duration(requestTimeout))
+	c, err := dockerclient.NewDockerClientTimeout("tcp://"+e.Addr, config, time.Duration(requestTimeout), nil)
 	if err != nil {
 		return err
 	}
@@ -627,7 +627,13 @@ func (e *Engine) emitEvent(event string) {
 		Event: dockerclient.Event{
 			Status: event,
 			From:   "swarm",
-			Time:   time.Now().Unix(),
+			Type:   "swarm",
+			Action: event,
+			Actor: dockerclient.Actor{
+				Attributes: make(map[string]string),
+			},
+			Time:     time.Now().Unix(),
+			TimeNano: time.Now().UnixNano(),
 		},
 		Engine: e,
 	}
@@ -886,12 +892,12 @@ func (e *Engine) handler(ev *dockerclient.Event, _ chan error, args ...interface
 	case "die", "kill", "oom", "pause", "start", "stop", "unpause", "rename":
 		// If the container state changes, we have to do an inspect in
 		// order to update container.Info and get the new NetworkSettings.
-		e.refreshContainer(ev.Id, true)
+		e.refreshContainer(ev.ID, true)
 		e.RefreshVolumes()
 		e.RefreshNetworks()
 	default:
 		// Otherwise, do a "soft" refresh of the container.
-		e.refreshContainer(ev.Id, false)
+		e.refreshContainer(ev.ID, false)
 		e.RefreshVolumes()
 		e.RefreshNetworks()
 	}

cluster/engine_test.go

@@ -212,7 +212,7 @@ func TestEngineState(t *testing.T) {
 	}
 
 	// Fake an event which will trigger a refresh. The second container will appear.
-	engine.handler(&dockerclient.Event{Id: "two", Status: "created"}, nil)
+	engine.handler(&dockerclient.Event{ID: "two", Status: "created"}, nil)
 	containers = engine.Containers()
 	assert.Len(t, containers, 2)
 	if containers[0].Id != "one" && containers[1].Id != "one" {

cluster/event.go

@@ -11,7 +11,7 @@ import (
 // Event is exported
 type Event struct {
 	dockerclient.Event
-	Engine *Engine
+	Engine *Engine `json:"-"`
 }
 
 // EventHandler is exported

test/integration/api/events.bats

@@ -26,12 +26,12 @@ function teardown() {
 	kill "$events_pid"
 
 	# verify size
-	[[ $(wc -l < ${log_file}) == 3 ]]
+	[[ $(wc -l < ${log_file}) -ge 3 ]]
 
 	# verify content
 	run cat "$log_file"
 	[ "$status" -eq 0 ]
-	[[ "${output}" == *"node:node-0"* ]]
+	[[ "${output}" == *"node-0"* ]]
 	[[ "${output}" == *"create"* ]]
 	[[ "${output}" == *"start"* ]]
 	[[ "${output}" == *"die"* ]]

test/integration/mesos/api/events.bats

@@ -31,7 +31,7 @@ function teardown() {
 	# verify
 	run cat "$log_file"
 	[ "$status" -eq 0 ]
-	[[ "${output}" == *"node:node-0"* ]]
+	[[ "${output}" == *"node-0"* ]]
 	[[ "${output}" == *"create"* ]]
 	[[ "${output}" == *"start"* ]]
 	[[ "${output}" == *"die"* ]]