Golang utils.DisplayJSONMessagesStream函數代碼示例

func (cli *DockerCli) stream(method, path string, in io.Reader, out io.Writer, headers map[string][]string) error {
	if (method == "POST" || method == "PUT") && in == nil {
		in = bytes.NewReader([]byte{})
	}
	req, err := http.NewRequest(method, fmt.Sprintf("/v%g%s", APIVERSION, path), in)
	if err != nil {
		return err
	}
	req.Header.Set("User-Agent", "Docker-Client/"+VERSION)
	req.Host = cli.addr
	if method == "POST" {
		req.Header.Set("Content-Type", "plain/text")
	}

	if headers != nil {
		for k, v := range headers {
			req.Header[k] = v
		}
	}

	dial, err := net.Dial(cli.proto, cli.addr)
	if err != nil {
		if strings.Contains(err.Error(), "connection refused") {
			return fmt.Errorf("Can't connect to docker daemon. Is 'docker -d' running on this host?")
		}
		return err
	}
	clientconn := httputil.NewClientConn(dial, nil)
	resp, err := clientconn.Do(req)
	defer clientconn.Close()
	if err != nil {
		if strings.Contains(err.Error(), "connection refused") {
			return fmt.Errorf("Can't connect to docker daemon. Is 'docker -d' running on this host?")
		}
		return err
	}
	defer resp.Body.Close()

	if resp.StatusCode < 200 || resp.StatusCode >= 400 {
		body, err := ioutil.ReadAll(resp.Body)
		if err != nil {
			return err
		}
		if len(body) == 0 {
			return fmt.Errorf("Error :%s", http.StatusText(resp.StatusCode))
		}
		return fmt.Errorf("Error: %s", body)
	}

	if matchesContentType(resp.Header.Get("Content-Type"), "application/json") {
		return utils.DisplayJSONMessagesStream(resp.Body, out)
	} else {
		if _, err := io.Copy(out, resp.Body); err != nil {
			return err
		}
	}
	return nil
}

func (cli *DockerCli) streamHelper(method, path string, setRawTerminal bool, in io.Reader, stdout, stderr io.Writer, headers map[string][]string) error {
	if (method == "POST" || method == "PUT") && in == nil {
		in = bytes.NewReader([]byte{})
	}

	req, err := http.NewRequest(method, fmt.Sprintf("http://v%s%s", api.APIVERSION, path), in)
	if err != nil {
		return err
	}
	req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
	req.URL.Host = cli.addr
	req.URL.Scheme = cli.scheme
	if method == "POST" {
		req.Header.Set("Content-Type", "plain/text")
	}

	if headers != nil {
		for k, v := range headers {
			req.Header[k] = v
		}
	}
	resp, err := cli.HTTPClient().Do(req)
	if err != nil {
		if strings.Contains(err.Error(), "connection refused") {
			return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
		}
		return err
	}
	defer resp.Body.Close()

	if resp.StatusCode < 200 || resp.StatusCode >= 400 {
		body, err := ioutil.ReadAll(resp.Body)
		if err != nil {
			return err
		}
		if len(body) == 0 {
			return fmt.Errorf("Error :%s", http.StatusText(resp.StatusCode))
		}
		return fmt.Errorf("Error: %s", bytes.TrimSpace(body))
	}

	if api.MatchesContentType(resp.Header.Get("Content-Type"), "application/json") {
		return utils.DisplayJSONMessagesStream(resp.Body, stdout, cli.terminalFd, cli.isTerminal)
	}
	if stdout != nil || stderr != nil {
		// When TTY is ON, use regular copy
		if setRawTerminal {
			_, err = io.Copy(stdout, resp.Body)
		} else {
			_, err = utils.StdCopy(stdout, stderr, resp.Body)
		}
		utils.Debugf("[stream] End of stdout")
		return err
	}
	return nil
}

func (c *Client) stream(method, path string, in io.Reader, out io.Writer, headers http.Header) error {
	if (method == "POST" || method == "PUT") && in == nil {
		in = bytes.NewReader(nil)
	}

	// setup the request
	req, err := http.NewRequest(method, fmt.Sprintf("/v%g%s", APIVERSION, path), in)
	if err != nil {
		return err
	}

	// set default headers
	req.Header = headers
	req.Header.Set("User-Agent", "Docker-Client/0.6.4")
	req.Header.Set("Content-Type", "plain/text")

	// dial the host server
	req.Host = c.addr
	dial, err := net.Dial(c.proto, c.addr)
	if err != nil {
		return err
	}

	// make the request
	conn := httputil.NewClientConn(dial, nil)
	resp, err := conn.Do(req)
	defer conn.Close()
	if err != nil {
		return err
	}

	// make sure we defer close the body
	defer resp.Body.Close()

	// Check for an http error status (ie not 200 StatusOK)
	switch resp.StatusCode {
	case 404:
		return ErrNotFound
	case 403:
		return ErrForbidden
	case 401:
		return ErrNotAuthorized
	case 400:
		return ErrBadRequest
	}

	// If no output we exit now with no errors
	if out == nil {
		return nil
	}

	// copy the output stream to the writer
	if resp.Header.Get("Content-Type") == "application/json" {
		var terminalFd = os.Stdin.Fd()
		var isTerminal = term.IsTerminal(terminalFd)

		// it may not make sense to put this code here, but it works for
		// us at the moment, and I don't feel like refactoring
		return utils.DisplayJSONMessagesStream(resp.Body, out, terminalFd, isTerminal)
	}
	// otherwise plain text
	if _, err := io.Copy(out, resp.Body); err != nil {
		return err
	}

	return nil
}

func (cli *DockerCli) stream(method, path string, in io.Reader, out io.Writer, headers map[string][]string) error {
	if (method == "POST" || method == "PUT") && in == nil {
		in = bytes.NewReader([]byte{})
	}

	// fixme: refactor client to support redirect
	re := regexp.MustCompile("/+")
	path = re.ReplaceAllString(path, "/")

	req, err := http.NewRequest(method, fmt.Sprintf("/v%s%s", api.APIVERSION, path), in)
	if err != nil {
		return err
	}
	req.Header.Set("User-Agent", "Docker-Client/"+dockerversion.VERSION)
	req.Host = cli.addr
	if method == "POST" {
		req.Header.Set("Content-Type", "plain/text")
	}

	if headers != nil {
		for k, v := range headers {
			req.Header[k] = v
		}
	}

	dial, err := cli.dial()
	if err != nil {
		if strings.Contains(err.Error(), "connection refused") {
			return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
		}
		return err
	}
	clientconn := httputil.NewClientConn(dial, nil)
	resp, err := clientconn.Do(req)
	defer clientconn.Close()
	if err != nil {
		if strings.Contains(err.Error(), "connection refused") {
			return fmt.Errorf("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
		}
		return err
	}
	defer resp.Body.Close()

	if resp.StatusCode < 200 || resp.StatusCode >= 400 {
		body, err := ioutil.ReadAll(resp.Body)
		if err != nil {
			return err
		}
		if len(body) == 0 {
			return fmt.Errorf("Error :%s", http.StatusText(resp.StatusCode))
		}
		return fmt.Errorf("Error: %s", bytes.TrimSpace(body))
	}

	if api.MatchesContentType(resp.Header.Get("Content-Type"), "application/json") {
		return utils.DisplayJSONMessagesStream(resp.Body, out, cli.terminalFd, cli.isTerminal)
	}
	if _, err := io.Copy(out, resp.Body); err != nil {
		return err
	}
	return nil
}