Java ChannelExec.getExitStatus方法代碼示例

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
/**
 * Convenience method to execute a command on the given remote session, using the given string
 * as part of the error if it fails to run.
 *
 * @param roboRioSession The ssh session of the roboRio
 * @param command        The command to execute
 * @param errorString    The error string to put in the exception if an error occurs. The return
 *                       code will be appended to the end
 * @throws JSchException If an ssh error occurs
 * @throws IOException   Thrown if there is an io error, or if the command fails to run
 */
private void executeCommand(Session roboRioSession, String command, String errorString) throws JSchException, IOException {
    // Extract the JRE
    m_logger.debug("Running command " + command);
    ChannelExec channel = (ChannelExec) roboRioSession.openChannel(EXEC_COMMAND);
    channel.setCommand(command);
    channel.connect();
    int sleepCount = 0;
    // Sleep for up to 10 seconds while we wait for the command to execute, checking every 100 milliseconds
    do {
        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            m_logger.warn("Interrupted exception while waiting for command " + command + " to finish", e);
        }
    } while (!channel.isClosed() && sleepCount++ < 100);

    int res = channel.getExitStatus();
    if (res != SUCCESS) {
        m_logger.debug("Error with command " + command);
        throw new IOException(errorString + " " + res);
    }
    channel.disconnect();
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
/**
 *
 * @param command SSH command to execute
 * @return the exit code
 */
public int execute(
                    String command,
                    boolean waitForCompletion ) {

    try {
        this.command = command;

        execChannel = (ChannelExec) session.openChannel("exec");

        execChannel.setCommand(command);
        execChannel.setInputStream(null);
        execChannel.setPty(true); // Allocate a Pseudo-Terminal. Thus it supports login sessions. (eg. /bin/bash -l)

        execChannel.connect(); // there is a bug in the other method channel.connect( TIMEOUT );

        stdoutThread = new StreamReader(execChannel.getInputStream(), execChannel, "STDOUT");
        stderrThread = new StreamReader(execChannel.getErrStream(), execChannel, "STDERR");
        stdoutThread.start();
        stderrThread.start();

        if (waitForCompletion) {

            stdoutThread.getContent();
            stderrThread.getContent();
            return execChannel.getExitStatus();
        }

    } catch (Exception e) {

        throw new JschSshClientException(e.getMessage(), e);
    } finally {

        if (waitForCompletion && execChannel != null) {
            execChannel.disconnect();
        }
    }

    return -1;
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
/**
 * Reads std and error remote output which are then wrapped inside {@link RemoteCommandReturnInfo}
 *
 * @param channelExec the channel where the command is sent for execution
 * @param timeout the length of time in ms in which the method waits for a available byte(s) as a result of command
 * @return {@link RemoteCommandReturnInfo}
 */
private RemoteCommandReturnInfo getExecRemoteCommandReturnInfo(final ChannelExec channelExec, final long timeout)
        throws IOException, JSchException {

    final String output = scrubberService.scrub(readExecRemoteOutput(channelExec, timeout));
    LOGGER.debug("remote output = {}", output);

    String errorOutput = null;

    // wait for the channel to close before checking the exit status
    final long startTime = System.currentTimeMillis();
    while (!channelExec.isClosed()) {
        if ((System.currentTimeMillis() - startTime) > CHANNEL_EXEC_CLOSE_TIMEOUT) {
            errorOutput = MessageFormat.format("Wait for channel to close timeout! Timeout = {0} ms",
                    CHANNEL_EXEC_CLOSE_TIMEOUT);
            LOGGER.error(errorOutput);
            break;
        }
    }

    LOGGER.debug("Channel exec exit status = {}", channelExec.getExitStatus());

    if (channelExec.getExitStatus() != 0 && channelExec.getExitStatus() != -1) {
        errorOutput = readExecRemoteOutput(channelExec, timeout);
        LOGGER.debug("remote error output = {}", errorOutput);
    }

    return new RemoteCommandReturnInfo(channelExec.getExitStatus(), output, errorOutput);
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
public int executeCommand(boolean setPty, String command, CommandResultConsumer consumer) {
	Session ssh = SshUtil.getInstance().createSshSession(username, hostname);
	int resultCode = 255;

	try {
		ssh.connect();
		LOGGER.debug("Connected to ssh console");
		ChannelExec channel = (ChannelExec) ssh.openChannel("exec");
		channel.setPty(setPty);
		channel.setCommand(command);
		channel.setInputStream(null);
		channel.setOutputStream(System.err);

		LOGGER.debug("Executing command: '{}'", command);
		channel.connect();
		try {
			if (consumer != null) {
				consumer.consume(channel.getInputStream());
			}
		} catch (IOException ex) {
			throw new RuntimeException("Unable to read console output", ex);
		} finally {
			channel.disconnect();
		}
		resultCode = channel.getExitStatus();
	} catch (JSchException x) {
		LOGGER.error("Error SSH to " + username + "@" + hostname, x);
	} finally {
		ssh.disconnect();
	}

	return resultCode;
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
public StringPair executeCmd(String USERNAME,String PASSWORD,String host,String command)
{
	StringPair result = new StringPair();
	try
	{
		JSch jsch = new JSch();
		Session session = jsch.getSession(USERNAME, host, port);
		session.setConfig("StrictHostKeyChecking", "no");
		session.setPassword(PASSWORD);
		session.connect();
		ChannelExec channelExec = (ChannelExec)session.openChannel("exec");
		InputStream in = channelExec.getInputStream();
		channelExec.setCommand(command);
		channelExec.connect();
		BufferedReader reader = new BufferedReader(new InputStreamReader(in));
		//while((line = reader.readLine()) != null)
		result.hostName = reader.readLine();
		result.ip=reader.readLine();
		reader.close();
		int exitStatus = channelExec.getExitStatus();
		channelExec.disconnect();
		session.disconnect();
		if(exitStatus < 0){
			System.out.println("Done, but exit status not set!");
		}
		else if(exitStatus > 0){
			System.out.println("Done, but with error!");
		}
		else{
			System.out.println("Done!");
		}
		return result;
	}
	catch(Exception e)
	{
		System.err.println("Error: " + e);
		return result;
	}
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
@Override
public void run() {
    TaskStage stage = TaskStage.FINISHED;
    Map<String, String> commandResponse = new HashMap<>();

    Session session = null;
    try {
        JSch jsch = new JSch();
        session = jsch.getSession(this.auth.userEmail, this.state.host,
                this.state.port);

        jsch.addIdentity("KeyPair",
                EncryptionUtils.decrypt(this.auth.privateKey).getBytes(), null, null);
        java.util.Properties config = new java.util.Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);

        session.connect();

        for (String cmd : this.state.commands) {
            // Create a channel for each command.
            ChannelExec channel = (ChannelExec) session
                    .openChannel("exec");
            channel.setCommand(cmd);

            ByteArrayOutputStream out = new ByteArrayOutputStream();
            channel.setOutputStream(out);
            channel.setErrStream(out);

            channel.connect();

            while (!channel.isClosed()) {
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                }
            }

            // add command output/err to response map.
            commandResponse.put(cmd, out.toString());
            int exitStatus = channel.getExitStatus();
            channel.disconnect();

            if (exitStatus != 0) {
                // last command failed, sendSelfPatch the task.
                stage = TaskStage.FAILED;
                break;
            }
        }

        // patch task state
        sendSelfPatch(this.state, stage, commandResponse, null);

    } catch (Throwable t) {
        fail(this.state, t);
        return;
    } finally {
        if (session != null) {
            session.disconnect();
        }
    }
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
public void exec(String cmdToRun) throws IOException, JSchException, InterruptedException {
    ChannelExec channelExec = (ChannelExec) remoteClient.getSession().openChannel("exec");

    channelExec.setCommand(cmdToRun);
    channelExec.setInputStream(null);

    InputStream [] inputs = new InputStream [] {channelExec.getInputStream(), channelExec.getExtInputStream(), channelExec.getErrStream()};

    channelExec.connect();
    final long now = System.currentTimeMillis();
    boolean gotResult = false;
    while (!gotResult && System.currentTimeMillis() - now < 1000) {
        for (int i = 0; i < inputs.length; ++i)  {
            InputStream input = inputs[i];
            BufferedReader reader = new BufferedReader(new InputStreamReader(input));
            String line;
            StringBuilder builder = new StringBuilder();
            if (reader.ready()) {
                while ((line = reader.readLine()) != null) {
                    builder.append(line).append("\n");
                }
                gotResult = true;
                System.out.println("Got reply from input#" + i + ":\n" + builder.toString());
                break;
            }
        }
        Thread.sleep(50);
    }

    int exitStatus = channelExec.getExitStatus();
    channelExec.disconnect();
    System.out.println("Executing command exit status: " + exitStatus);
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
public int execute(String[] commands, OutputStream stdout, OutputStream stderr) {
    try {
        ChannelExec ch = (ChannelExec) getSession().openChannel(CHANNEL_EXEC);

        String command = buildCommand(commands);

        ch.setCommand(command);
        try {
            InputStream out = ch.getInputStream();
            InputStream err = ch.getErrStream();
            ch.connect();
            if (stdout != null) {
                ByteStreams.copy(out, stdout);
            }
            if (stderr != null) {
                ByteStreams.copy(err, stderr);
            }

            int exitCode;
            while ((exitCode = ch.getExitStatus()) == -1) {
                Thread.sleep(100);
            }

            return exitCode;
        } finally {
            ch.disconnect();
        }

    } catch (Exception e) {
        throw new SshException(e);
    }
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
public List<String> list(String parent) throws IOException {
    Message.debug("SShRepository:list called: " + parent);
    List<String> result = new ArrayList<>();
    Session session = null;
    ChannelExec channel = null;
    session = getSession(parent);
    channel = getExecChannel(session);
    URI parentUri = null;
    try {
        parentUri = new URI(parent);
    } catch (URISyntaxException e) {
        throw new IOException("The uri '" + parent + "' is not valid!", e);
    }
    String fullCmd = replaceArgument(listCommand, parentUri.getPath());
    channel.setCommand(fullCmd);
    StringBuilder stdOut = new StringBuilder();
    StringBuilder stdErr = new StringBuilder();
    readSessionOutput(channel, stdOut, stdErr);
    if (channel.getExitStatus() != 0) {
        Message.error("Ssh ListCommand exited with status != 0");
        Message.error(stdErr.toString());
        return null;
    } else {
        BufferedReader br = new BufferedReader(new StringReader(stdOut.toString()));
        String line = null;
        while ((line = br.readLine()) != null) {
            result.add(line);
        }
    }
    return result;
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
/**
 * check for existence of file or dir on target system
 *
 * @param filePath
 *            to the object to check
 * @param session
 *            to use
 * @return true: object exists, false otherwise
 */
private boolean checkExistence(String filePath, Session session) throws IOException {
    Message.debug("SShRepository: checkExistence called: " + filePath);
    ChannelExec channel = null;
    channel = getExecChannel(session);
    String fullCmd = replaceArgument(existCommand, filePath);
    channel.setCommand(fullCmd);
    StringBuilder stdOut = new StringBuilder();
    StringBuilder stdErr = new StringBuilder();
    readSessionOutput(channel, stdOut, stdErr);
    return channel.getExitStatus() == 0;
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
@Override
public ExecutableChannel create() throws Exception
{
    // http://stackoverflow.com/questions/6265278/whats-the-exact-differences-between-jsch-channelexec-and-channelshell
    this.session = acquire(SshConnection.builder().from(JschSshClient.this.connection).sessionTimeout(0).build());
    executor = (ChannelExec) session.openChannel("exec");
    executor.setCommand(command);

    executor.setErrStream(new ByteArrayOutputStream());
    
    InputStream inputStream = executor.getInputStream();
    InputStream errStream = executor.getErrStream();
    OutputStream outStream = executor.getOutputStream();
    
    executor.connect();

    return new ExecutableChannel(outStream, inputStream, errStream, new Supplier<Integer>()
    {
        @Override
        public Integer get()
        {
            int exitStatus = executor.getExitStatus();
            return exitStatus != -1 ? exitStatus : null;
        }

    }, new Closeable()
    {
        @Override
        public void close() throws IOException
        {
            clear();
        }
    });
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
/**
 *
 * {@link  org.apache.commons.vfs2.provider.sftp.SftpFileSystem#executeCommand(java.lang.String, java.lang.StringBuilder) }
 */
private int executeCommand( String command, StringBuilder output ) throws JSchException, IOException {
  this.ensureSession();
  ChannelExec channel = (ChannelExec) this.session.openChannel( "exec" );
  channel.setCommand( command );
  channel.setInputStream( (InputStream) null );
  InputStreamReader stream = new InputStreamReader( channel.getInputStream() );
  channel.setErrStream( System.err, true );
  channel.connect();
  char[] buffer = new char[128];

  int read;
  while ( ( read = stream.read( buffer, 0, buffer.length ) ) >= 0 ) {
    output.append( buffer, 0, read );
  }

  stream.close();

  while ( !channel.isClosed() ) {
    try {
      Thread.sleep( 100L );
    } catch ( Exception exc ) {
      log.logMinimal( "Warning: Error session closing. " + exc.getMessage() );
    }
  }

  channel.disconnect();
  return channel.getExitStatus();
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
/**
 * Seems there are bad naming in the library the sysout is in
 * channel.getInputStream(); the syserr is in
 * ((ChannelExec)channel).setErrStream(os);
 *
 * @param channel
 *            the channel
 * @return the response on singe request
 */
public ResponseOnSingeRequest executeAndGenResponse(ChannelExec channel) {
    ResponseOnSingeRequest sshResponse = new ResponseOnSingeRequest();

    InputStream in = null;
    OutputStream outputStreamStdErr = new ByteArrayOutputStream();
    StringBuilder sbStdOut = new StringBuilder();
    try {

        in = channel.getInputStream();
        channel.setErrStream(outputStreamStdErr);

        byte[] tmp = new byte[ParallecGlobalConfig.sshBufferSize];
        while (true) {
            while (in.available() > 0) {
                int i = in.read(tmp, 0, ParallecGlobalConfig.sshBufferSize);
                if (i < 0)
                    break;
                sbStdOut.append(new String(tmp, 0, i));

            }

            if (channel.isClosed()) {
                if (in.available() > 0)
                    continue;
                sshResponse.setFailObtainResponse(false);

                // exit 0 is good
                int exitStatus = channel.getExitStatus();
                sshResponse.setStatusCodeInt(exitStatus);
                sshResponse.setStatusCode(Integer.toString(exitStatus));
                break;
            }

            Thread.sleep(ParallecGlobalConfig.sshSleepMIllisBtwReadBuffer);
        }

        sshResponse.setResponseBody(sbStdOut.toString());
        sshResponse.setErrorMessage(outputStreamStdErr.toString());
        sshResponse.setReceiveTimeNow();
    } catch (Exception t) {
        throw new RuntimeException(t);
    }

    return sshResponse;
}
 

import com.jcraft.jsch.ChannelExec; //導入方法依賴的package包/類
@Override
protected boolean waitForChannelClosed(ChannelExec channel, InputStream stdout, InputStream stderr) {
    boolean success = true;
    try {
        byte[] tmp = new byte[1024];
        while (true) {
            while (stdout.available() > 0) {
                int i = stdout.read(tmp, 0, 1024);
                if (i < 0) {
                    break;
                }
            }
            if (channel.isClosed()) {
                if (stdout.available() > 0) {
                    continue;
                }
                break;
            }
            try {
                Thread.sleep(1000);
            } catch (Exception ee) {
                // ignore
            }
        }
        if (channel.getExitStatus() != 0) {
            BufferedReader reader = null;
            try {
                reader = new BufferedReader(new InputStreamReader(stderr));
                logger.error(String.format("exit-status: %d - %s", channel.getExitStatus(), read(reader)));
            } finally {
                if (reader != null) {
                    reader.close();
                }
            }
            success = false;
        }
    } catch (IOException e) {
        logger.error(e.getMessage().replace("\n", " "));
    }
    return success;
}