Golang client.NewDockerCli函數代碼示例

// Ensure that CIDFile gets deleted if it's empty
// Perform this test by making `docker run` fail
func TestRunCidFileCleanupIfEmpty(t *testing.T) {
	tmpDir, err := ioutil.TempDir("", "TestRunCidFile")
	if err != nil {
		t.Fatal(err)
	}
	tmpCidFile := path.Join(tmpDir, "cid")

	cli := client.NewDockerCli(nil, ioutil.Discard, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	c := make(chan struct{})
	go func() {
		defer close(c)
		if err := cli.CmdRun("--cidfile", tmpCidFile, unitTestImageID); err == nil {
			t.Fatal("running without a command should haveve failed")
		}
		if _, err := os.Stat(tmpCidFile); err == nil {
			t.Fatalf("empty CIDFile '%s' should've been deleted", tmpCidFile)
		}
	}()
	defer os.RemoveAll(tmpDir)

	setTimeout(t, "CmdRun timed out", 5*time.Second, func() {
		<-c
	})
}

//A few of functions stolen from Deis dockercliuitls! Thanks guys
func GetNewClient() (
	cli *client.DockerCli, stdout *io.PipeReader, stdoutPipe *io.PipeWriter) {
	stdout, stdoutPipe = io.Pipe()
	cli = client.NewDockerCli(
		nil, stdoutPipe, nil, "unix", "/var/run/docker.sock", nil)
	return
}

// GetNewClient returns a new docker test client.
func GetNewClient() (
	cli *client.DockerCli, stdout *io.PipeReader, stdoutPipe *io.PipeWriter) {
	testDaemonAddr := DaemonAddr()
	testDaemonProto := DaemonProto()
	stdout, stdoutPipe = io.Pipe()
	cli = client.NewDockerCli(
		nil, stdoutPipe, nil, testDaemonProto, testDaemonAddr, nil)
	return
}

// TestHttpsInfo connects via two-way authenticated HTTPS to the info endpoint
func TestHttpsInfo(t *testing.T) {
	cli := client.NewDockerCli(nil, ioutil.Discard, ioutil.Discard, testDaemonProto,
		testDaemonHttpsAddr, getTlsConfig("client-cert.pem", "client-key.pem", t))

	setTimeout(t, "Reading command output time out", 10*time.Second, func() {
		if err := cli.CmdInfo(); err != nil {
			t.Fatal(err)
		}
	})
}

// TestHttpsInfoRogueCert connects via two-way authenticated HTTPS to the info endpoint
// by using a rogue client certificate and checks that it fails with the expected error.
func TestHttpsInfoRogueCert(t *testing.T) {
	cli := client.NewDockerCli(nil, ioutil.Discard, ioutil.Discard, testDaemonProto,
		testDaemonHttpsAddr, getTlsConfig("client-rogue-cert.pem", "client-rogue-key.pem", t))

	setTimeout(t, "Reading command output time out", 10*time.Second, func() {
		err := cli.CmdInfo()
		if err == nil {
			t.Fatal("Expected error but got nil")
		}
		if !strings.Contains(err.Error(), errBadCertificate) {
			t.Fatalf("Expected error: %s, got instead: %s", errBadCertificate, err)
		}
	})
}

func TestRunExit(t *testing.T) {
	stdin, stdinPipe := io.Pipe()
	stdout, stdoutPipe := io.Pipe()

	cli := client.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	c1 := make(chan struct{})
	go func() {
		cli.CmdRun("-i", unitTestImageID, "/bin/cat")
		close(c1)
	}()

	setTimeout(t, "Read/Write assertion timed out", 2*time.Second, func() {
		if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 150); err != nil {
			t.Fatal(err)
		}
	})

	container := globalRuntime.List()[0]

	// Closing /bin/cat stdin, expect it to exit
	if err := stdin.Close(); err != nil {
		t.Fatal(err)
	}

	// as the process exited, CmdRun must finish and unblock. Wait for it
	setTimeout(t, "Waiting for CmdRun timed out", 10*time.Second, func() {
		<-c1

		go func() {
			cli.CmdWait(container.ID)
		}()

		if _, err := bufio.NewReader(stdout).ReadString('\n'); err != nil {
			t.Fatal(err)
		}
	})

	// Make sure that the client has been disconnected
	setTimeout(t, "The client should have been disconnected once the remote process exited.", 2*time.Second, func() {
		// Expecting pipe i/o error, just check that read does not block
		stdin.Read([]byte{})
	})

	// Cleanup pipes
	if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil {
		t.Fatal(err)
	}
}

func TestImagesViz(t *testing.T) {
	t.Skip("Image viz is deprecated")
	stdout, stdoutPipe := io.Pipe()

	cli := client.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	image := buildTestImages(t, globalEngine)

	c := make(chan struct{})
	go func() {
		defer close(c)
		if err := cli.CmdImages("--viz"); err != nil {
			t.Fatal(err)
		}
		stdoutPipe.Close()
	}()

	setTimeout(t, "Reading command output time out", 2*time.Second, func() {
		cmdOutputBytes, err := ioutil.ReadAll(bufio.NewReader(stdout))
		if err != nil {
			t.Fatal(err)
		}
		cmdOutput := string(cmdOutputBytes)

		regexpStrings := []string{
			"digraph docker {",
			fmt.Sprintf("base -> \"%s\" \\[style=invis]", unitTestImageIDShort),
			fmt.Sprintf("label=\"%s\\\\n%s:latest\"", unitTestImageIDShort, unitTestImageName),
			fmt.Sprintf("label=\"%s\\\\n%s:%s\"", utils.TruncateID(image.ID), "test", "latest"),
			"base \\[style=invisible]",
		}

		compiledRegexps := []*regexp.Regexp{}
		for _, regexpString := range regexpStrings {
			regexp, err := regexp.Compile(regexpString)
			if err != nil {
				fmt.Println("Error in regex string: ", err)
				return
			}
			compiledRegexps = append(compiledRegexps, regexp)
		}

		for _, regexp := range compiledRegexps {
			if !regexp.MatchString(cmdOutput) {
				t.Fatalf("images --viz content '%s' did not match regexp '%s'", cmdOutput, regexp)
			}
		}
	})
}

func TestImagesTree(t *testing.T) {
	t.Skip("Image tree is deprecated")
	stdout, stdoutPipe := io.Pipe()

	cli := client.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	image := buildTestImages(t, globalEngine)

	c := make(chan struct{})
	go func() {
		defer close(c)
		if err := cli.CmdImages("--tree"); err != nil {
			t.Fatal(err)
		}
		stdoutPipe.Close()
	}()

	setTimeout(t, "Reading command output time out", 2*time.Second, func() {
		cmdOutputBytes, err := ioutil.ReadAll(bufio.NewReader(stdout))
		if err != nil {
			t.Fatal(err)
		}
		cmdOutput := string(cmdOutputBytes)
		regexpStrings := []string{
			fmt.Sprintf("└─%s Virtual Size: \\d+.\\d+ MB Tags: %s:latest", unitTestImageIDShort, unitTestImageName),
			"(?m)   └─[0-9a-f]+.*",
			"(?m)    └─[0-9a-f]+.*",
			"(?m)      └─[0-9a-f]+.*",
			fmt.Sprintf("(?m)^        └─%s Virtual Size: \\d+.\\d+ MB Tags: test:latest", utils.TruncateID(image.ID)),
		}

		compiledRegexps := []*regexp.Regexp{}
		for _, regexpString := range regexpStrings {
			regexp, err := regexp.Compile(regexpString)
			if err != nil {
				fmt.Println("Error in regex string: ", err)
				return
			}
			compiledRegexps = append(compiledRegexps, regexp)
		}

		for _, regexp := range compiledRegexps {
			if !regexp.MatchString(cmdOutput) {
				t.Fatalf("images --tree content '%s' did not match regexp '%s'", cmdOutput, regexp)
			}
		}
	})
}

// #2098 - Docker cidFiles only contain short version of the containerId
//sudo docker run --cidfile /tmp/docker_test.cid ubuntu echo "test"
// TestRunCidFile tests that run --cidfile returns the longid
func TestRunCidFileCheckIDLength(t *testing.T) {
	stdout, stdoutPipe := io.Pipe()

	tmpDir, err := ioutil.TempDir("", "TestRunCidFile")
	if err != nil {
		t.Fatal(err)
	}
	tmpCidFile := path.Join(tmpDir, "cid")

	cli := client.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	c := make(chan struct{})
	go func() {
		defer close(c)
		if err := cli.CmdRun("--cidfile", tmpCidFile, unitTestImageID, "ls"); err != nil {
			t.Fatal(err)
		}
	}()

	defer os.RemoveAll(tmpDir)
	setTimeout(t, "Reading command output time out", 2*time.Second, func() {
		cmdOutput, err := bufio.NewReader(stdout).ReadString('\n')
		if err != nil {
			t.Fatal(err)
		}
		if len(cmdOutput) < 1 {
			t.Fatalf("'ls' should return something , not '%s'", cmdOutput)
		}
		//read the tmpCidFile
		buffer, err := ioutil.ReadFile(tmpCidFile)
		if err != nil {
			t.Fatal(err)
		}
		id := string(buffer)

		if len(id) != len("2bf44ea18873287bd9ace8a4cb536a7cbe134bed67e805fdf2f58a57f69b320c") {
			t.Fatalf("--cidfile should be a long id, not '%s'", id)
		}
		//test that its a valid cid? (though the container is gone..)
		//remove the file and dir.
	})

	setTimeout(t, "CmdRun timed out", 5*time.Second, func() {
		<-c
	})

}

// Expected behaviour: the process stay alive when the client disconnects
// but the client detaches.
func TestRunDisconnectTty(t *testing.T) {

	stdin, stdinPipe := io.Pipe()
	stdout, stdoutPipe := io.Pipe()

	cli := client.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	c1 := make(chan struct{})
	go func() {
		defer close(c1)
		// We're simulating a disconnect so the return value doesn't matter. What matters is the
		// fact that CmdRun returns.
		if err := cli.CmdRun("-i", "-t", unitTestImageID, "/bin/cat"); err != nil {
			utils.Debugf("Error CmdRun: %s", err)
		}
	}()

	container := waitContainerStart(t, 10*time.Second)

	state := setRaw(t, container)
	defer unsetRaw(t, container, state)

	// Client disconnect after run -i should keep stdin out in TTY mode
	setTimeout(t, "Read/Write assertion timed out", 2*time.Second, func() {
		if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 150); err != nil {
			t.Fatal(err)
		}
	})

	// Close pipes (simulate disconnect)
	if err := closeWrap(stdin, stdinPipe, stdout, stdoutPipe); err != nil {
		t.Fatal(err)
	}

	// wait for CmdRun to return
	setTimeout(t, "Waiting for CmdRun timed out", 5*time.Second, func() {
		<-c1
	})

	// In tty mode, we expect the process to stay alive even after client's stdin closes.

	// Give some time to monitor to do his thing
	container.WaitTimeout(500 * time.Millisecond)
	if !container.State.IsRunning() {
		t.Fatalf("/bin/cat should  still be running after closing stdin (tty mode)")
	}
}

func TestCmdLogs(t *testing.T) {
	t.Skip("Test not impemented")
	cli := client.NewDockerCli(nil, ioutil.Discard, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	if err := cli.CmdRun(unitTestImageID, "sh", "-c", "ls -l"); err != nil {
		t.Fatal(err)
	}
	if err := cli.CmdRun("-t", unitTestImageID, "sh", "-c", "ls -l"); err != nil {
		t.Fatal(err)
	}

	if err := cli.CmdLogs(globalRuntime.List()[0].ID); err != nil {
		t.Fatal(err)
	}
}

// TestRunWorkdirExistsAndIsFile checks that if 'docker run -w' with existing file can be detected
func TestRunWorkdirExistsAndIsFile(t *testing.T) {

	cli := client.NewDockerCli(nil, nil, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	c := make(chan struct{})
	go func() {
		defer close(c)
		if err := cli.CmdRun("-w", "/bin/cat", unitTestImageID, "pwd"); err == nil {
			t.Fatal("should have failed to run when using /bin/cat as working dir.")
		}
	}()

	setTimeout(t, "CmdRun timed out", 5*time.Second, func() {
		<-c
	})
}

// TestRunDetach checks attaching and detaching with the escape sequence.
func TestRunDetach(t *testing.T) {

	stdin, stdinPipe := io.Pipe()
	stdout, stdoutPipe := io.Pipe()

	cli := client.NewDockerCli(stdin, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	ch := make(chan struct{})
	go func() {
		defer close(ch)
		cli.CmdRun("-i", "-t", unitTestImageID, "cat")
	}()

	container := waitContainerStart(t, 10*time.Second)

	state := setRaw(t, container)
	defer unsetRaw(t, container, state)

	setTimeout(t, "First read/write assertion timed out", 2*time.Second, func() {
		if err := assertPipe("hello\n", "hello", stdout, stdinPipe, 150); err != nil {
			t.Fatal(err)
		}
	})

	setTimeout(t, "Escape sequence timeout", 5*time.Second, func() {
		stdinPipe.Write([]byte{16})
		time.Sleep(100 * time.Millisecond)
		stdinPipe.Write([]byte{17})
	})

	// wait for CmdRun to return
	setTimeout(t, "Waiting for CmdRun timed out", 15*time.Second, func() {
		<-ch
	})
	closeWrap(stdin, stdinPipe, stdout, stdoutPipe)

	time.Sleep(500 * time.Millisecond)
	if !container.State.IsRunning() {
		t.Fatal("The detached container should be still running")
	}

	setTimeout(t, "Waiting for container to die timed out", 20*time.Second, func() {
		container.Kill()
	})
}

// Expected behaviour: error out when attempting to bind mount non-existing source paths
func TestRunErrorBindNonExistingSource(t *testing.T) {

	cli := client.NewDockerCli(nil, nil, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	c := make(chan struct{})
	go func() {
		defer close(c)
		// This check is made at runtime, can't be "unit tested"
		if err := cli.CmdRun("-v", "/i/dont/exist:/tmp", unitTestImageID, "echo 'should fail'"); err == nil {
			t.Fatal("should have failed to run when using /i/dont/exist as a source for the bind mount")
		}
	}()

	setTimeout(t, "CmdRun timed out", 5*time.Second, func() {
		<-c
	})
}

// TestRunWorkdirExists checks that 'docker run -w' correctly sets a custom working directory, even if it exists
func TestRunWorkdirExists(t *testing.T) {
	stdout, stdoutPipe := io.Pipe()

	cli := client.NewDockerCli(nil, stdoutPipe, ioutil.Discard, testDaemonProto, testDaemonAddr, nil)
	defer cleanup(globalEngine, t)

	c := make(chan struct{})
	go func() {
		defer close(c)
		if err := cli.CmdRun("-w", "/proc", unitTestImageID, "pwd"); err != nil {
			t.Fatal(err)
		}
	}()

	setTimeout(t, "Reading command output time out", 2*time.Second, func() {
		cmdOutput, err := bufio.NewReader(stdout).ReadString('\n')
		if err != nil {
			t.Fatal(err)
		}
		if cmdOutput != "/proc\n" {
			t.Fatalf("'pwd' should display '%s', not '%s'", "/proc\n", cmdOutput)
		}
	})

	container := globalRuntime.List()[0]

	setTimeout(t, "CmdRun timed out", 5*time.Second, func() {
		<-c

		go func() {
			cli.CmdWait(container.ID)
		}()

		if _, err := bufio.NewReader(stdout).ReadString('\n'); err != nil {
			t.Fatal(err)
		}
	})

	// Cleanup pipes
	if err := closeWrap(stdout, stdoutPipe); err != nil {
		t.Fatal(err)
	}
}