Example usage for org.apache.commons.exec Executor setStreamHandler

Introduction

In this page you can find the example usage for org.apache.commons.exec Executor setStreamHandler.

Prototype

void setStreamHandler(ExecuteStreamHandler streamHandler);

Source Link

Document

Set a custom the StreamHandler used for providing input and retrieving the output.

Usage

From source file:org.openhab.binding.exec.internal.ExecBinding.java

/**
 * <p>Executes <code>commandLine</code>. Sometimes (especially observed on 
 * MacOS) the commandLine isn't executed properly. In that cases another 
 * exec-method is to be used. To accomplish this please use the special 
 * delimiter '<code>@@</code>'. If <code>commandLine</code> contains this 
 * delimiter it is split into a String[] array and the special exec-method
 * is used.</p>/*from   w w  w  . j  a v  a 2 s  . c  om*/
 * <p>A possible {@link IOException} gets logged but no further processing is
 * done.</p> 
 * 
 * @param commandLine the command line to execute
 * @return response data from executed command line 
 */
private String executeCommandAndWaitResponse(String commandLine) {
    String retval = null;

    CommandLine cmdLine = null;

    if (commandLine.contains(CMD_LINE_DELIMITER)) {
        String[] cmdArray = commandLine.split(CMD_LINE_DELIMITER);
        cmdLine = new CommandLine(cmdArray[0]);

        for (int i = 1; i < cmdArray.length; i++) {
            cmdLine.addArgument(cmdArray[i], false);
        }
    } else {
        cmdLine = CommandLine.parse(commandLine);
    }

    DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();

    ExecuteWatchdog watchdog = new ExecuteWatchdog(timeout);
    Executor executor = new DefaultExecutor();

    ByteArrayOutputStream stdout = new ByteArrayOutputStream();
    PumpStreamHandler streamHandler = new PumpStreamHandler(stdout);

    executor.setExitValue(1);
    executor.setStreamHandler(streamHandler);
    executor.setWatchdog(watchdog);

    try {
        executor.execute(cmdLine, resultHandler);
        logger.debug("executed commandLine '{}'", commandLine);
    } catch (ExecuteException e) {
        logger.error("couldn't execute commandLine '" + commandLine + "'", e);
    } catch (IOException e) {
        logger.error("couldn't execute commandLine '" + commandLine + "'", e);
    }

    // some time later the result handler callback was invoked so we
    // can safely request the exit code
    try {
        resultHandler.waitFor();
        int exitCode = resultHandler.getExitValue();
        retval = StringUtils.chomp(stdout.toString());
        logger.debug("exit code '{}', result '{}'", exitCode, retval);

    } catch (InterruptedException e) {
        logger.error("Timeout occured when executing commandLine '" + commandLine + "'", e);
    }

    return retval;
}

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From source file:org.openhab.io.net.exec.ExecUtil.java

/**
 * <p>//from   w  w  w .ja  v  a2  s.  c o m
 * Executes <code>commandLine</code>. Sometimes (especially observed on
 * MacOS) the commandLine isn't executed properly. In that cases another
 * exec-method is to be used. To accomplish this please use the special
 * delimiter '<code>@@</code>'. If <code>commandLine</code> contains this
 * delimiter it is split into a String[] array and the special exec-method
 * is used.
 * </p>
 * <p>
 * A possible {@link IOException} gets logged but no further processing is
 * done.
 * </p>
 * 
 * @param commandLine
 *            the command line to execute
 * @param timeout
 *            timeout for execution in milliseconds
 * @return response data from executed command line
 */
public static String executeCommandLineAndWaitResponse(String commandLine, int timeout) {
    String retval = null;

    CommandLine cmdLine = null;

    if (commandLine.contains(CMD_LINE_DELIMITER)) {
        String[] cmdArray = commandLine.split(CMD_LINE_DELIMITER);
        cmdLine = new CommandLine(cmdArray[0]);

        for (int i = 1; i < cmdArray.length; i++) {
            cmdLine.addArgument(cmdArray[i], false);
        }
    } else {
        cmdLine = CommandLine.parse(commandLine);
    }

    DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();

    ExecuteWatchdog watchdog = new ExecuteWatchdog(timeout);
    Executor executor = new DefaultExecutor();

    ByteArrayOutputStream stdout = new ByteArrayOutputStream();
    PumpStreamHandler streamHandler = new PumpStreamHandler(stdout);

    executor.setExitValue(1);
    executor.setStreamHandler(streamHandler);
    executor.setWatchdog(watchdog);

    try {
        executor.execute(cmdLine, resultHandler);
        logger.debug("executed commandLine '{}'", commandLine);
    } catch (ExecuteException e) {
        logger.error("couldn't execute commandLine '" + commandLine + "'", e);
    } catch (IOException e) {
        logger.error("couldn't execute commandLine '" + commandLine + "'", e);
    }

    // some time later the result handler callback was invoked so we
    // can safely request the exit code
    try {
        resultHandler.waitFor();
        int exitCode = resultHandler.getExitValue();
        retval = StringUtils.chomp(stdout.toString());
        if (resultHandler.getException() != null) {
            logger.warn(resultHandler.getException().getMessage());
        } else {
            logger.debug("exit code '{}', result '{}'", exitCode, retval);
        }

    } catch (InterruptedException e) {
        logger.error("Timeout occured when executing commandLine '" + commandLine + "'", e);
    }

    return retval;
}

---

From source file:org.openqa.selenium.iphone.IPhoneSimulatorBinary.java

public void launch() {
    Executor executor = new DefaultExecutor();
    executor.setStreamHandler(new PumpStreamHandler(createOutputStream()));
    try {//from  w  w w  .j a va 2s  .  c o  m
        exitCode = executor.execute(commandLine);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}

---

From source file:org.openqa.selenium.iphone.IPhoneSimulatorBinary.java

public void shutdown() {
    try {//from w  w w.  j av a  2  s  .c o  m
        File scriptFile = File.createTempFile("iWebDriver.kill.", ".script");
        FileWriter writer = new FileWriter(scriptFile);
        writer.write("ps ax | grep 'iPhone Simulator' | grep -v grep | awk '{print $1}' | xargs kill");
        writer.flush();
        writer.close();
        FileHandler.makeExecutable(scriptFile);
        CommandLine killCommandLine = CommandLine.parse(scriptFile.getAbsolutePath());
        Executor executor = new DefaultExecutor();
        executor.setStreamHandler(new PumpStreamHandler(null, null));
        getOutputIgnoringExecutor().execute(killCommandLine);
    } catch (Exception ignored) {
    }
    // Wait until the process really quits (nothing is bound to port 3001)
    // TODO something other than Thread.sleep
    // client = new HttpClientFactory().getHttpClient();
    try {
        Thread.sleep(5000);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    exitCode = null;
}

---

From source file:org.openqa.selenium.iphone.IPhoneSimulatorBinary.java

private static Executor getOutputIgnoringExecutor() {
    Executor executor = new DefaultExecutor();
    executor.setStreamHandler(new PumpStreamHandler(null, null));
    return executor;
}

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From source file:org.openqa.selenium.iphone.IPhoneSimulatorCommandExecutorTest.java

private void killIphoneSimulatorProcesses() {
    try {//from   www.  j a  v a  2s  .  c om
        File scriptFile = File.createTempFile("iWebDriver.kill.", ".script");
        FileWriter writer = new FileWriter(scriptFile);
        writer.write("ps ax | grep 'iPhone Simulator' | grep -v grep | awk '{print $1}' | xargs kill");
        writer.flush();
        writer.close();
        FileHandler.makeExecutable(scriptFile);
        CommandLine killCommandLine = CommandLine.parse(scriptFile.getAbsolutePath());
        Executor executor = new DefaultExecutor();
        executor.setStreamHandler(new PumpStreamHandler(null, null));
        executor.execute(killCommandLine);
        // need to wait for the port to free up
        // TODO same as needs to be done in IPhoneSimulatorBinary
        Thread.sleep(5000);
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:org.rhq.server.control.ControlCommand.java

protected void killPid(String pid) throws IOException {
    Executor executor = new DefaultExecutor();
    executor.setWorkingDirectory(getBinDir());
    PumpStreamHandler streamHandler = new PumpStreamHandler(createNullOutputStream(), createNullOutputStream());
    executor.setStreamHandler(streamHandler);
    org.apache.commons.exec.CommandLine commandLine;

    commandLine = new org.apache.commons.exec.CommandLine("kill").addArgument(pid);
    executor.execute(commandLine);//from   ww  w . j  a v  a  2 s . c om
}

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From source file:org.rhq.server.control.ControlCommand.java

protected boolean isUnixPidRunning(String pid) {

    Executor executor = new DefaultExecutor();
    executor.setWorkingDirectory(getBinDir());
    PumpStreamHandler streamHandler = new PumpStreamHandler(createNullOutputStream(), createNullOutputStream());
    executor.setStreamHandler(streamHandler);
    org.apache.commons.exec.CommandLine commandLine;
    commandLine = new org.apache.commons.exec.CommandLine("kill").addArgument("-0").addArgument(pid);

    boolean isRunning = true; // assume it is running
    try {/*from   ww  w  .ja  v a  2s .co m*/
        int code = executor.execute(commandLine);
        if (code != 0) {
            isRunning = false;
        }
    } catch (ExecuteException ee) {
        log.debug("kill -0 for pid [" + pid + "] threw exception with exit value [" + ee.getExitValue() + "]");
        if (ee.getExitValue() == 1) {
            // return code 1 means process does not exist
            isRunning = false;
        }
    } catch (IOException e) {
        log.error("Checking for running process failed. Will assume it is running. Error: " + e.getMessage());
    }

    log.debug("unix pid [" + pid + "] " + ((isRunning) ? "is" : "is NOT") + " running");
    return isRunning;
}

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From source file:org.rhq.storage.installer.StorageInstaller.java

private String exec(File workingDir, org.apache.commons.exec.CommandLine cmdLine) throws Exception {
    Executor executor = new DefaultExecutor();
    org.apache.commons.io.output.ByteArrayOutputStream buffer = new org.apache.commons.io.output.ByteArrayOutputStream();
    NullOutputStream nullOs = new NullOutputStream();
    PumpStreamHandler streamHandler = new PumpStreamHandler(nullOs, buffer);
    executor.setWorkingDirectory(workingDir);
    executor.setStreamHandler(streamHandler);
    String result = "";

    try {/*from  w w w  . ja  va  2  s  . c  o m*/
        exec(executor, cmdLine);
        result = buffer.toString();

    } finally {
        try {
            buffer.close();
            nullOs.close();
        } catch (Exception e) {
            // best effort
        }
    }

    return result;
}

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From source file:org.stanwood.media.info.MediaFileInfoFetcher.java

private String getCommandOutput(boolean captureStdout, boolean captureStderr, boolean failOnExitCode,
        String command, Object... args) throws StanwoodException {
    CommandLine cmdLine = new CommandLine(command);
    for (Object arg : args) {
        if (arg instanceof File) {
            cmdLine.addArgument(((File) arg).getAbsolutePath(), false);
        } else if (arg instanceof String) {
            cmdLine.addArgument((String) arg, false);
        }/*from  w  w w.j av  a  2  s .c  om*/
    }
    if (log.isDebugEnabled()) {
        log.debug("About to execute: " + cmdLine.toString()); //$NON-NLS-1$
    }
    Executor exec = new DefaultExecutor();
    exec.setExitValues(new int[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, -1 });

    try {
        ByteArrayOutputStream capture = new ByteArrayOutputStream();
        OutputStream out;
        if (captureStdout) {
            out = capture;
        } else {
            out = new LoggerOutputStream(Level.INFO);
        }
        OutputStream err;
        ;
        if (captureStderr) {
            err = capture;
        } else {
            err = new LoggerOutputStream(Level.ERROR);
        }
        exec.setStreamHandler(new PumpStreamHandler(out, err));
        int exitCode = exec.execute(cmdLine);
        if (failOnExitCode && exitCode != 0) {
            log.error(capture.toString());
            throw new StanwoodException(MessageFormat
                    .format(Messages.getString("MediaFileInfoFetcher.NON_ZERO"), exitCode, cmdLine.toString())); //$NON-NLS-1$
        }
        return capture.toString();
    } catch (IOException e) {
        throw new StanwoodException(MessageFormat
                .format(Messages.getString("MediaFileInfoFetcher.UnableExecuteSysCmd"), cmdLine.toString()), e); //$NON-NLS-1$
    }
}

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