Golang context.Background函数代码示例

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本文整理汇总了Golang中github.com/coreos/fleet/Godeps/_workspace/src/golang.org/x/net/context.Background函数的典型用法代码示例。如果您正苦于以下问题：Golang Background函数的具体用法？Golang Background怎么用？Golang Background使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了Background函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: TestHTTPKeysAPIGetResponse

func TestHTTPKeysAPIGetResponse(t *testing.T) {
	client := &staticHTTPClient{
		resp: http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"X-Etcd-Index": []string{"42"}},
		},
		body: []byte(`{"action":"get","node":{"key":"/pants/foo/bar","modifiedIndex":25,"createdIndex":19,"nodes":[{"key":"/pants/foo/bar/baz","value":"snarf","createdIndex":21,"modifiedIndex":25}]}}`),
	}

	wantResponse := &Response{
		Action: "get",
		Node: &Node{
			Key: "/pants/foo/bar",
			Nodes: []*Node{
				&Node{Key: "/pants/foo/bar/baz", Value: "snarf", CreatedIndex: 21, ModifiedIndex: 25},
			},
			CreatedIndex:  uint64(19),
			ModifiedIndex: uint64(25),
		},
		Index: uint64(42),
	}

	kAPI := &httpKeysAPI{client: client, prefix: "/pants"}
	resp, err := kAPI.Get(context.Background(), "/foo/bar", &GetOptions{Recursive: true})
	if err != nil {
		t.Errorf("non-nil error: %#v", err)
	}
	if !reflect.DeepEqual(wantResponse, resp) {
		t.Errorf("incorrect Response: want=%#v got=%#v", wantResponse, resp)
	}
}

开发者ID:artik2015，项目名称:fleet，代码行数:31，代码来源:keys_test.go

示例2: TestHTTPMembersAPIListError

func TestHTTPMembersAPIListError(t *testing.T) {
	tests := []httpClient{
		// generic httpClient failure
		&staticHTTPClient{err: errors.New("fail!")},

		// unrecognized HTTP status code
		&staticHTTPClient{
			resp: http.Response{StatusCode: http.StatusTeapot},
		},

		// fail to unmarshal body on StatusOK
		&staticHTTPClient{
			resp: http.Response{
				StatusCode: http.StatusOK,
			},
			body: []byte(`[{"id":"XX`),
		},
	}

	for i, tt := range tests {
		mAPI := &httpMembersAPI{client: tt}
		ms, err := mAPI.List(context.Background())
		if err == nil {
			t.Errorf("#%d: got nil err", i)
		}
		if ms != nil {
			t.Errorf("#%d: got non-nil Member slice", i)
		}
	}
}

开发者ID:Roskowski101，项目名称:fleet，代码行数:30，代码来源:members_test.go

示例3: TestSimpleHTTPClientDoCancelContextResponseBodyClosed

func TestSimpleHTTPClientDoCancelContextResponseBodyClosed(t *testing.T) {
	tr := newFakeTransport()
	c := &simpleHTTPClient{transport: tr}

	// create an already-cancelled context
	ctx, cancel := context.WithCancel(context.Background())
	cancel()

	body := &checkableReadCloser{ReadCloser: ioutil.NopCloser(strings.NewReader("foo"))}
	go func() {
		// wait for CancelRequest to be called, informing us that simpleHTTPClient
		// knows the context is already timed out
		<-tr.startCancel

		tr.respchan <- &http.Response{Body: body}
		tr.finishCancel <- struct{}{}
	}()

	_, _, err := c.Do(ctx, &fakeAction{})
	if err == nil {
		t.Fatalf("expected non-nil error, got nil")
	}

	if !body.closed {
		t.Fatalf("expected closed body")
	}
}

开发者ID:artik2015，项目名称:fleet，代码行数:27，代码来源:client_test.go

示例4: TestHTTPKeysAPIDeleteResponse

func TestHTTPKeysAPIDeleteResponse(t *testing.T) {
	client := &staticHTTPClient{
		resp: http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"X-Etcd-Index": []string{"22"}},
		},
		body: []byte(`{"action":"delete","node":{"key":"/pants/foo/bar/baz","value":"snarf","modifiedIndex":22,"createdIndex":19},"prevNode":{"key":"/pants/foo/bar/baz","value":"snazz","modifiedIndex":20,"createdIndex":19}}`),
	}

	wantResponse := &Response{
		Action:   "delete",
		Node:     &Node{Key: "/pants/foo/bar/baz", Value: "snarf", CreatedIndex: uint64(19), ModifiedIndex: uint64(22)},
		PrevNode: &Node{Key: "/pants/foo/bar/baz", Value: "snazz", CreatedIndex: uint64(19), ModifiedIndex: uint64(20)},
		Index:    uint64(22),
	}

	kAPI := &httpKeysAPI{client: client, prefix: "/pants"}
	resp, err := kAPI.Delete(context.Background(), "/foo/bar/baz", nil)
	if err != nil {
		t.Errorf("non-nil error: %#v", err)
	}
	if !reflect.DeepEqual(wantResponse, resp) {
		t.Errorf("incorrect Response: want=%#v got=%#v", wantResponse, resp)
	}
}

开发者ID:artik2015，项目名称:fleet，代码行数:25，代码来源:keys_test.go

示例5: TestHTTPKeysAPIDeleteError

func TestHTTPKeysAPIDeleteError(t *testing.T) {
	tests := []httpClient{
		// generic HTTP client failure
		&staticHTTPClient{
			err: errors.New("fail!"),
		},

		// unusable status code
		&staticHTTPClient{
			resp: http.Response{
				StatusCode: http.StatusTeapot,
			},
		},

		// etcd Error response
		&staticHTTPClient{
			resp: http.Response{
				StatusCode: http.StatusInternalServerError,
			},
			body: []byte(`{"errorCode":300,"message":"Raft internal error","cause":"/foo","index":18}`),
		},
	}

	for i, tt := range tests {
		kAPI := httpKeysAPI{client: tt}
		resp, err := kAPI.Delete(context.Background(), "/foo", nil)
		if err == nil {
			t.Errorf("#%d: received nil error", i)
		}
		if resp != nil {
			t.Errorf("#%d: received non-nil Response: %#v", i, resp)
		}
	}
}

开发者ID:artik2015，项目名称:fleet，代码行数:34，代码来源:keys_test.go

示例6: TestHTTPMembersAPIAddSuccess

func TestHTTPMembersAPIAddSuccess(t *testing.T) {
	wantAction := &membersAPIActionAdd{
		peerURLs: types.URLs([]url.URL{
			{Scheme: "http", Host: "127.0.0.1:7002"},
		}),
	}

	mAPI := &httpMembersAPI{
		client: &actionAssertingHTTPClient{
			t:   t,
			act: wantAction,
			resp: http.Response{
				StatusCode: http.StatusCreated,
			},
			body: []byte(`{"id":"94088180e21eb87b","peerURLs":["http://127.0.0.1:7002"]}`),
		},
	}

	wantResponseMember := &Member{
		ID:       "94088180e21eb87b",
		PeerURLs: []string{"http://127.0.0.1:7002"},
	}

	m, err := mAPI.Add(context.Background(), "http://127.0.0.1:7002")
	if err != nil {
		t.Errorf("got non-nil err: %#v", err)
	}
	if !reflect.DeepEqual(wantResponseMember, m) {
		t.Errorf("incorrect Member: want=%#v got=%#v", wantResponseMember, m)
	}
}

开发者ID:Roskowski101，项目名称:fleet，代码行数:31，代码来源:members_test.go

示例7: TestSimpleHTTPClientDoCancelContextWaitForRoundTrip

func TestSimpleHTTPClientDoCancelContextWaitForRoundTrip(t *testing.T) {
	tr := newFakeTransport()
	c := &simpleHTTPClient{transport: tr}

	donechan := make(chan struct{})
	ctx, cancel := context.WithCancel(context.Background())
	go func() {
		c.Do(ctx, &fakeAction{})
		close(donechan)
	}()

	// This should call CancelRequest and begin the cancellation process
	cancel()

	select {
	case <-donechan:
		t.Fatalf("simpleHTTPClient.Do should not have exited yet")
	default:
	}

	tr.finishCancel <- struct{}{}

	select {
	case <-donechan:
		//expected behavior
		return
	case <-time.After(time.Second):
		t.Fatalf("simpleHTTPClient.Do did not exit within 1s")
	}
}

开发者ID:pquast，项目名称:fleet，代码行数:30，代码来源:client_test.go

示例8: TestSimpleHTTPClientDoCancelContextResponseBodyClosed

func TestSimpleHTTPClientDoCancelContextResponseBodyClosed(t *testing.T) {
	tr := newFakeTransport()
	c := &simpleHTTPClient{transport: tr}

	// create an already-cancelled context
	ctx, cancel := context.WithCancel(context.Background())
	cancel()

	body := &checkableReadCloser{ReadCloser: ioutil.NopCloser(strings.NewReader("foo"))}
	go func() {
		// wait that simpleHTTPClient knows the context is already timed out,
		// and calls CancelRequest
		testutil.WaitSchedule()

		// response is returned before cancel effects
		tr.respchan <- &http.Response{Body: body}
	}()

	_, _, err := c.Do(ctx, &fakeAction{})
	if err == nil {
		t.Fatalf("expected non-nil error, got nil")
	}

	if !body.closed {
		t.Fatalf("expected closed body")
	}
}

开发者ID:pquast，项目名称:fleet，代码行数:27，代码来源:client_test.go

示例9: TestHTTPMembersAPIListSuccess

func TestHTTPMembersAPIListSuccess(t *testing.T) {
	wantAction := &membersAPIActionList{}
	mAPI := &httpMembersAPI{
		client: &actionAssertingHTTPClient{
			t:   t,
			act: wantAction,
			resp: http.Response{
				StatusCode: http.StatusOK,
			},
			body: []byte(`{"members":[{"id":"94088180e21eb87b","name":"node2","peerURLs":["http://127.0.0.1:7002"],"clientURLs":["http://127.0.0.1:4002"]}]}`),
		},
	}

	wantResponseMembers := []Member{
		{
			ID:         "94088180e21eb87b",
			Name:       "node2",
			PeerURLs:   []string{"http://127.0.0.1:7002"},
			ClientURLs: []string{"http://127.0.0.1:4002"},
		},
	}

	m, err := mAPI.List(context.Background())
	if err != nil {
		t.Errorf("got non-nil err: %#v", err)
	}
	if !reflect.DeepEqual(wantResponseMembers, m) {
		t.Errorf("incorrect Members: want=%#v got=%#v", wantResponseMembers, m)
	}
}

开发者ID:Roskowski101，项目名称:fleet，代码行数:30，代码来源:members_test.go

示例10: TestHTTPClusterClientSyncFail

func TestHTTPClusterClientSyncFail(t *testing.T) {
	cf := newStaticHTTPClientFactory([]staticHTTPResponse{
		staticHTTPResponse{err: errors.New("fail!")},
	})

	hc := &httpClusterClient{clientFactory: cf}
	err := hc.reset([]string{"http://127.0.0.1:2379"})
	if err != nil {
		t.Fatalf("unexpected error during setup: %#v", err)
	}

	want := []string{"http://127.0.0.1:2379"}
	got := hc.Endpoints()
	if !reflect.DeepEqual(want, got) {
		t.Fatalf("incorrect endpoints: want=%#v got=%#v", want, got)
	}

	err = hc.Sync(context.Background())
	if err == nil {
		t.Fatalf("got nil error during Sync")
	}

	got = hc.Endpoints()
	if !reflect.DeepEqual(want, got) {
		t.Fatalf("incorrect endpoints after failed Sync: want=%#v got=%#v", want, got)
	}
}

开发者ID:pquast，项目名称:fleet，代码行数:27，代码来源:client_test.go

示例11: watch

func watch(kAPI etcd.KeysAPI, key string, stop chan struct{}) (res *etcd.Response) {
	for res == nil {
		select {
		case <-stop:
			log.Debugf("Gracefully closing etcd watch loop: key=%s", key)
			return
		default:
			opts := &etcd.WatcherOptions{
				AfterIndex: 0,
				Recursive:  true,
			}
			watcher := kAPI.Watcher(key, opts)
			log.Debugf("Creating etcd watcher: %s", key)

			var err error
			res, err = watcher.Next(context.Background())
			if err != nil {
				log.Errorf("etcd watcher %v returned error: %v", key, err)
			}
		}

		// Let's not slam the etcd server in the event that we know
		// an unexpected error occurred.
		time.Sleep(time.Second)
	}

	return
}

开发者ID:artik2015，项目名称:fleet，代码行数:28，代码来源:event.go

示例12: TestHTTPKeysAPICreateInOrderAction

func TestHTTPKeysAPICreateInOrderAction(t *testing.T) {
	act := &createInOrderAction{
		Dir:   "/foo",
		Value: "bar",
		TTL:   0,
	}
	kAPI := httpKeysAPI{client: &actionAssertingHTTPClient{t: t, act: act}}
	kAPI.CreateInOrder(context.Background(), "/foo", "bar", nil)
}

开发者ID:artik2015，项目名称:fleet，代码行数:9，代码来源:keys_test.go

示例13: TestSimpleHTTPClientDoError

func TestSimpleHTTPClientDoError(t *testing.T) {
	tr := newFakeTransport()
	c := &simpleHTTPClient{transport: tr}

	tr.errchan <- errors.New("fixture")

	_, _, err := c.Do(context.Background(), &fakeAction{})
	if err == nil {
		t.Fatalf("expected non-nil error, got nil")
	}
}

开发者ID:pquast，项目名称:fleet，代码行数:11，代码来源:client_test.go

示例14: TestSimpleHTTPClientDoCancelContext

func TestSimpleHTTPClientDoCancelContext(t *testing.T) {
	tr := newFakeTransport()
	c := &simpleHTTPClient{transport: tr}

	tr.startCancel <- struct{}{}
	tr.finishCancel <- struct{}{}

	_, _, err := c.Do(context.Background(), &fakeAction{})
	if err == nil {
		t.Fatalf("expected non-nil error, got nil")
	}
}

开发者ID:pquast，项目名称:fleet，代码行数:12，代码来源:client_test.go

示例15: TestHTTPKeysAPIDeleteAction

func TestHTTPKeysAPIDeleteAction(t *testing.T) {
	tests := []struct {
		key        string
		value      string
		opts       *DeleteOptions
		wantAction httpAction
	}{
		// nil DeleteOptions
		{
			key:  "/foo",
			opts: nil,
			wantAction: &deleteAction{
				Key:       "/foo",
				PrevValue: "",
				PrevIndex: 0,
				Recursive: false,
			},
		},
		// empty DeleteOptions
		{
			key:  "/foo",
			opts: &DeleteOptions{},
			wantAction: &deleteAction{
				Key:       "/foo",
				PrevValue: "",
				PrevIndex: 0,
				Recursive: false,
			},
		},
		// populated DeleteOptions
		{
			key: "/foo",
			opts: &DeleteOptions{
				PrevValue: "baz",
				PrevIndex: 13,
				Recursive: true,
			},
			wantAction: &deleteAction{
				Key:       "/foo",
				PrevValue: "baz",
				PrevIndex: 13,
				Recursive: true,
			},
		},
	}

	for i, tt := range tests {
		client := &actionAssertingHTTPClient{t: t, num: i, act: tt.wantAction}
		kAPI := httpKeysAPI{client: client}
		kAPI.Delete(context.Background(), tt.key, tt.opts)
	}
}

开发者ID:artik2015，项目名称:fleet，代码行数:52，代码来源:keys_test.go

示例16: ExampleWithTimeout

func ExampleWithTimeout() {
	// Pass a context with a timeout to tell a blocking function that it
	// should abandon its work after the timeout elapses.
	ctx, _ := context.WithTimeout(context.Background(), 100*time.Millisecond)
	select {
	case <-time.After(200 * time.Millisecond):
		fmt.Println("overslept")
	case <-ctx.Done():
		fmt.Println(ctx.Err()) // prints "context deadline exceeded"
	}
	// Output:
	// context deadline exceeded
}

开发者ID:artik2015，项目名称:fleet，代码行数:13，代码来源:withtimeout_test.go

示例17: TestHTTPKeysAPIUpdateAction

func TestHTTPKeysAPIUpdateAction(t *testing.T) {
	act := &setAction{
		Key:       "/foo",
		Value:     "bar",
		PrevExist: PrevExist,
		PrevIndex: 0,
		PrevValue: "",
		TTL:       0,
	}

	kAPI := httpKeysAPI{client: &actionAssertingHTTPClient{t: t, act: act}}
	kAPI.Update(context.Background(), "/foo", "bar")
}

开发者ID:artik2015，项目名称:fleet，代码行数:13，代码来源:keys_test.go

示例18: TestHTTPWatcherNextWaitAction

func TestHTTPWatcherNextWaitAction(t *testing.T) {
	initAction := waitAction{
		Prefix:    "/pants",
		Key:       "/foo/bar",
		Recursive: true,
		WaitIndex: 19,
	}

	client := &actionAssertingHTTPClient{
		t:   t,
		act: &initAction,
		resp: http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"X-Etcd-Index": []string{"42"}},
		},
		body: []byte(`{"action":"update","node":{"key":"/pants/foo/bar/baz","value":"snarf","modifiedIndex":21,"createdIndex":19},"prevNode":{"key":"/pants/foo/bar/baz","value":"snazz","modifiedIndex":20,"createdIndex":19}}`),
	}

	wantResponse := &Response{
		Action:   "update",
		Node:     &Node{Key: "/pants/foo/bar/baz", Value: "snarf", CreatedIndex: uint64(19), ModifiedIndex: uint64(21)},
		PrevNode: &Node{Key: "/pants/foo/bar/baz", Value: "snazz", CreatedIndex: uint64(19), ModifiedIndex: uint64(20)},
		Index:    uint64(42),
	}

	wantNextWait := waitAction{
		Prefix:    "/pants",
		Key:       "/foo/bar",
		Recursive: true,
		WaitIndex: 22,
	}

	watcher := &httpWatcher{
		client:   client,
		nextWait: initAction,
	}

	resp, err := watcher.Next(context.Background())
	if err != nil {
		t.Errorf("non-nil error: %#v", err)
	}

	if !reflect.DeepEqual(wantResponse, resp) {
		t.Errorf("received incorrect Response: want=%#v got=%#v", wantResponse, resp)
	}

	if !reflect.DeepEqual(wantNextWait, watcher.nextWait) {
		t.Errorf("nextWait incorrect: want=%#v got=%#v", wantNextWait, watcher.nextWait)
	}
}

开发者ID:artik2015，项目名称:fleet，代码行数:50，代码来源:keys_test.go

示例19: TestHTTPKeysAPIGetAction

func TestHTTPKeysAPIGetAction(t *testing.T) {
	tests := []struct {
		key        string
		opts       *GetOptions
		wantAction httpAction
	}{
		// nil GetOptions
		{
			key:  "/foo",
			opts: nil,
			wantAction: &getAction{
				Key:       "/foo",
				Sorted:    false,
				Recursive: false,
			},
		},
		// empty GetOptions
		{
			key:  "/foo",
			opts: &GetOptions{},
			wantAction: &getAction{
				Key:       "/foo",
				Sorted:    false,
				Recursive: false,
			},
		},
		// populated GetOptions
		{
			key: "/foo",
			opts: &GetOptions{
				Sort:      true,
				Recursive: true,
				Quorum:    true,
			},
			wantAction: &getAction{
				Key:       "/foo",
				Sorted:    true,
				Recursive: true,
				Quorum:    true,
			},
		},
	}

	for i, tt := range tests {
		client := &actionAssertingHTTPClient{t: t, num: i, act: tt.wantAction}
		kAPI := httpKeysAPI{client: client}
		kAPI.Get(context.Background(), tt.key, tt.opts)
	}
}

开发者ID:pquast，项目名称:fleet，代码行数:49，代码来源:keys_test.go

示例20: TestHTTPWatcherNextFail

func TestHTTPWatcherNextFail(t *testing.T) {
	tests := []httpClient{
		// generic HTTP client failure
		&staticHTTPClient{
			err: errors.New("fail!"),
		},

		// unusable status code
		&staticHTTPClient{
			resp: http.Response{
				StatusCode: http.StatusTeapot,
			},
		},

		// etcd Error response
		&staticHTTPClient{
			resp: http.Response{
				StatusCode: http.StatusNotFound,
			},
			body: []byte(`{"errorCode":100,"message":"Key not found","cause":"/foo","index":18}`),
		},
	}

	for i, tt := range tests {
		act := waitAction{
			Prefix:    "/pants",
			Key:       "/foo/bar",
			Recursive: true,
			WaitIndex: 19,
		}

		watcher := &httpWatcher{
			client:   tt,
			nextWait: act,
		}

		resp, err := watcher.Next(context.Background())
		if err == nil {
			t.Errorf("#%d: expected non-nil error", i)
		}
		if resp != nil {
			t.Errorf("#%d: expected nil Response, got %#v", i, resp)
		}
		if !reflect.DeepEqual(act, watcher.nextWait) {
			t.Errorf("#%d: nextWait changed: want=%#v got=%#v", i, act, watcher.nextWait)
		}
	}
}

开发者ID:artik2015，项目名称:fleet，代码行数:48，代码来源:keys_test.go

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