fix up event client for namespaces

pkg/client/client.go

@@ -33,7 +33,7 @@ type Interface interface {
 	EndpointsNamespacer
 	VersionInterface
 	MinionsInterface
-	EventsInterface
+	EventNamespacer
 }
 
 func (c *Client) ReplicationControllers(namespace string) ReplicationControllerInterface {
@@ -44,8 +44,8 @@ func (c *Client) Minions() MinionInterface {
 	return newMinions(c)
 }
 
-func (c *Client) Events() EventInterface {
-	return newEvents(c)
+func (c *Client) Events(namespace string) EventInterface {
+	return newEvents(c, namespace)
 }
 
 func (c *Client) Endpoints(namespace string) EndpointsInterface {

pkg/client/client_test.go

@@ -23,6 +23,7 @@ import (
 	"net/url"
 	"path"
 	"reflect"
+	"strings"
 	"testing"
 
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
@@ -121,6 +122,7 @@ func (c *testClient) ValidateCommon(t *testing.T, err error) {
 
 	requestBody := body(c.Request.Body, c.Request.RawBody)
 	actualQuery := c.handler.RequestReceived.URL.Query()
+	t.Logf("got query: %v", actualQuery)
 	// We check the query manually, so blank it out so that FakeHandler.ValidateRequest
 	// won't check it.
 	c.handler.RequestReceived.URL.RawQuery = ""
@@ -128,11 +130,17 @@ func (c *testClient) ValidateCommon(t *testing.T, err error) {
 	for key, values := range c.Request.Query {
 		validator, ok := c.QueryValidator[key]
 		if !ok {
-			validator = func(a, b string) bool { return a == b }
+			switch key {
+			case "labels", "fields":
+				validator = validateLabels
+			default:
+				validator = func(a, b string) bool { return a == b }
+			}
 		}
 		observed := actualQuery.Get(key)
-		if !validator(values[0], observed) {
-			t.Errorf("Unexpected query arg for key: %s.  Expected %s, Received %s", key, values[0], observed)
+		wanted := strings.Join(values, "")
+		if !validator(wanted, observed) {
+			t.Errorf("Unexpected query arg for key: %s.  Expected %s, Received %s", key, wanted, observed)
 		}
 	}
 	if c.Request.Header != "" {

pkg/client/events.go

@@ -17,14 +17,17 @@ limitations under the License.
 package client
 
 import (
+	"fmt"
+
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
 )
 
-// Events has methods to work with Event resources
-type EventsInterface interface {
-	Events() EventInterface
+// EventNamespacer can return an EventInterface for the given namespace.
+type EventNamespacer interface {
+	Events(namespace string) EventInterface
 }
 
 // EventInterface has methods to work with Event resources
@@ -33,32 +36,48 @@ type EventInterface interface {
 	List(label, field labels.Selector) (*api.EventList, error)
 	Get(id string) (*api.Event, error)
 	Watch(label, field labels.Selector, resourceVersion string) (watch.Interface, error)
+	// Search finds events about the specified object
+	Search(objOrRef runtime.Object) (*api.EventList, error)
 }
 
 // events implements Events interface
 type events struct {
-	r *Client
+	client    *Client
+	namespace string
 }
 
-// newEvents returns a events
-func newEvents(c *Client) *events {
+// newEvents returns a new events object.
+func newEvents(c *Client, ns string) *events {
 	return &events{
-		r: c,
+		client:    c,
+		namespace: ns,
 	}
 }
 
-// Create makes a new event. Returns the copy of the event the server returns, or an error.
-func (c *events) Create(event *api.Event) (*api.Event, error) {
+// Create makes a new event. Returns the copy of the event the server returns,
+// or an error. The namespace to create the event within is deduced from the
+// event; it must either match this event client's namespace, or this event
+// client must have been created with the "" namespace.
+func (e *events) Create(event *api.Event) (*api.Event, error) {
+	if e.namespace != "" && event.Namespace != e.namespace {
+		return nil, fmt.Errorf("can't create an event with namespace '%v' in namespace '%v'", event.Namespace, e.namespace)
+	}
 	result := &api.Event{}
-	err := c.r.Post().Path("events").Namespace(event.Namespace).Body(event).Do().Into(result)
+	err := e.client.Post().
+		Path("events").
+		Namespace(event.Namespace).
+		Body(event).
+		Do().
+		Into(result)
 	return result, err
 }
 
 // List returns a list of events matching the selectors.
-func (c *events) List(label, field labels.Selector) (*api.EventList, error) {
+func (e *events) List(label, field labels.Selector) (*api.EventList, error) {
 	result := &api.EventList{}
-	err := c.r.Get().
+	err := e.client.Get().
 		Path("events").
+		Namespace(e.namespace).
 		SelectorParam("labels", label).
 		SelectorParam("fields", field).
 		Do().
@@ -67,19 +86,45 @@ func (c *events) List(label, field labels.Selector) (*api.EventList, error) {
 }
 
 // Get returns the given event, or an error.
-func (c *events) Get(id string) (*api.Event, error) {
+func (e *events) Get(id string) (*api.Event, error) {
 	result := &api.Event{}
-	err := c.r.Get().Path("events").Path(id).Do().Into(result)
+	err := e.client.Get().
+		Path("events").
+		Path(id).
+		Namespace(e.namespace).
+		Do().
+		Into(result)
 	return result, err
 }
 
 // Watch starts watching for events matching the given selectors.
-func (c *events) Watch(label, field labels.Selector, resourceVersion string) (watch.Interface, error) {
-	return c.r.Get().
+func (e *events) Watch(label, field labels.Selector, resourceVersion string) (watch.Interface, error) {
+	return e.client.Get().
 		Path("watch").
 		Path("events").
 		Param("resourceVersion", resourceVersion).
+		Namespace(e.namespace).
 		SelectorParam("labels", label).
 		SelectorParam("fields", field).
 		Watch()
 }
+
+// Search finds events about the specified object. The namespace of the
+// object must match this event's client namespace unless the event client
+// was made with the "" namespace.
+func (e *events) Search(objOrRef runtime.Object) (*api.EventList, error) {
+	ref, err := api.GetReference(objOrRef)
+	if err != nil {
+		return nil, err
+	}
+	// TODO: search by UID if it's set
+	fields := labels.Set{
+		"involvedObject.kind":      ref.Kind,
+		"involvedObject.namespace": ref.Namespace,
+		"involvedObject.name":      ref.Name,
+	}.AsSelector()
+	if e.namespace != "" && ref.Namespace != e.namespace {
+		return nil, fmt.Errorf("won't be able to find any events of namespace '%v' in namespace '%v'", ref.Namespace, e.namespace)
+	}
+	return e.List(labels.Everything(), fields)
+}

pkg/client/events_test.go

@@ -0,0 +1,49 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package client
+
+import (
+	"net/url"
+	"testing"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/api/testapi"
+)
+
+func TestEventSearch(t *testing.T) {
+	c := &testClient{
+		Request: testRequest{
+			Method: "GET",
+			Path:   "/events",
+			Query: url.Values{
+				"fields": []string{"involvedObject.kind=Pod,involvedObject.name=foo,involvedObject.namespace=baz"},
+				"labels": []string{},
+			},
+		},
+		Response: Response{StatusCode: 200, Body: &api.EventList{}},
+	}
+	eventList, err := c.Setup().Events("").Search(
+		&api.Pod{
+			ObjectMeta: api.ObjectMeta{
+				Name:      "foo",
+				Namespace: "baz",
+				SelfLink:  testapi.SelfLink("pods", ""),
+			},
+		},
+	)
+	c.Validate(t, eventList, err)
+}

pkg/client/fake.go

@@ -49,7 +49,7 @@ func (c *Fake) Minions() MinionInterface {
 	return &FakeMinions{Fake: c}
 }
 
-func (c *Fake) Events() EventInterface {
+func (c *Fake) Events(namespace string) EventInterface {
 	return &FakeEvents{Fake: c}
 }
 

pkg/client/fake_events.go

@@ -19,6 +19,7 @@ package client
 import (
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
 )
 
@@ -51,3 +52,9 @@ func (c *FakeEvents) Watch(label, field labels.Selector, resourceVersion string)
 	c.Fake.Actions = append(c.Fake.Actions, FakeAction{Action: "watch-events", Value: resourceVersion})
 	return c.Fake.Watch, c.Fake.Err
 }
+
+// Search returns a list of events matching the specified object.
+func (c *FakeEvents) Search(objOrRef runtime.Object) (*api.EventList, error) {
+	c.Fake.Actions = append(c.Fake.Actions, FakeAction{Action: "search-events"})
+	return &c.Fake.EventsList, nil
+}

plugin/cmd/scheduler/scheduler.go

@@ -56,7 +56,7 @@ func main() {
 		glog.Fatalf("Invalid API configuration: %v", err)
 	}
 
-	record.StartRecording(kubeClient.Events(), "scheduler")
+	record.StartRecording(kubeClient.Events(""), "scheduler")
 
 	go http.ListenAndServe(net.JoinHostPort(address.String(), strconv.Itoa(*port)), nil)