Examples with Command org.ow2.proactive_grid_cloud_portal.cli.cmd.Command used on opensource projects

Example 36 with Command

use of org.ow2.proactive_grid_cloud_portal.cli.cmd.Command in project scheduling by ow2-proactive.

the class CLIInfrastructure method startNodeImpl.

/**
 * Internal node acquisition method
 * <p>
 * Starts a PA runtime on remote host using a custom script, register it
 * manually in the nodesource.
 *
 * @param hostTracker The host on which one the node will be started
 * @param nbNodes number of nodes to deploy
 * @param depNodeURLs list of deploying or lost nodes urls created
 * @throws RMException
 *             acquisition failed
 */
protected void startNodeImpl(HostTracker hostTracker, int nbNodes, final List<String> depNodeURLs) throws RMException {
    final String nodeName = "SCR-" + this.nodeSource.getName() + "-" + ProActiveCounter.getUniqID();
    final String commandLine = interpreter + " " + deploymentScript.getAbsolutePath() + " " + hostTracker.getResolvedAddress().getHostName() + " " + nodeName + " " + this.nodeSource.getName() + " " + getRmUrl() + " " + nbNodes;
    final List<String> createdNodeNames = RMNodeStarter.getWorkersNodeNames(nodeName, nbNodes);
    depNodeURLs.addAll(addMultipleDeployingNodes(createdNodeNames, commandLine, "Deploying node on host " + hostTracker.getResolvedAddress(), this.nodeTimeOut));
    addTimeouts(depNodeURLs);
    Process p;
    try {
        logger.debug("Launching the command: " + commandLine);
        p = Runtime.getRuntime().exec(commandLine);
    } catch (IOException e1) {
        multipleDeclareDeployingNodeLost(depNodeURLs, "Cannot run command: " + commandLine + " - \n The following exception occured: " + getStackTraceAsString(e1));
        throw new RMException("Cannot run command: " + commandLine, e1);
    }
    String lf = System.lineSeparator();
    int circuitBreakerThreshold = 5;
    while (!anyTimedOut(depNodeURLs) && circuitBreakerThreshold > 0) {
        try {
            int exitCode = p.exitValue();
            if (exitCode != 0) {
                logger.error("Child process at " + hostTracker.getResolvedAddress().getHostName() + " exited abnormally (" + exitCode + ").");
            } else {
                logger.error("Launching node script has exited normally whereas it shouldn't.");
            }
            String pOutPut = Utils.extractProcessOutput(p);
            String pErrPut = Utils.extractProcessErrput(p);
            final String description = "Script failed to launch a node on host " + hostTracker.getResolvedAddress().getHostName() + lf + "   >Error code: " + exitCode + lf + "   >Errput: " + pErrPut + "   >Output: " + pOutPut;
            logger.error(description);
            if (super.checkNodeIsAcquiredAndDo(nodeName, null, new Runnable() {

                public void run() {
                    multipleDeclareDeployingNodeLost(depNodeURLs, description);
                }
            })) {
                return;
            } else {
                // there isn't any race regarding node registration
                throw new RMException("A node " + nodeName + " is not expected anymore because of an error.");
            }
        } catch (IllegalThreadStateException e) {
            logger.trace("IllegalThreadStateException while waiting for " + nodeName + " registration");
        }
        if (super.checkNodeIsAcquiredAndDo(nodeName, null, null)) {
            // registration is ok, we destroy the process
            logger.debug("Destroying the process: " + p);
            p.destroy();
            return;
        }
        try {
            Thread.sleep(1000);
        } catch (Exception e) {
            circuitBreakerThreshold--;
            logger.trace("An exception occurred while monitoring a child process", e);
        }
    }
    // if we exit because of a timeout
    if (this.anyTimedOut(depNodeURLs)) {
        // we remove it
        removeTimeouts(depNodeURLs);
        // we destroy the process
        p.destroy();
        throw new RMException("Deploying Node " + nodeName + " not expected any more");
    }
    if (circuitBreakerThreshold <= 0) {
        logger.error("Circuit breaker threshold reached while monitoring a child process.");
        throw new RMException("Several exceptions occurred while monitoring a child process.");
    }
}

Example 37 with Command

use of org.ow2.proactive_grid_cloud_portal.cli.cmd.Command in project scheduling by ow2-proactive.

the class LocalInfrastructure method startNodeProcess.

private void startNodeProcess(int numberOfNodes) {
    int currentIndex = getIndexAndIncrement();
    String baseNodeName = "local-" + this.nodeSource.getName() + "-" + currentIndex;
    OperatingSystem os = OperatingSystem.UNIX;
    // assuming no cygwin, windows or the "others"...
    if (System.getProperty("os.name").contains("Windows")) {
        os = OperatingSystem.WINDOWS;
    }
    String rmHome = PAResourceManagerProperties.RM_HOME.getValueAsString();
    if (!rmHome.endsWith(os.fs)) {
        rmHome += os.fs;
    }
    CommandLineBuilder clb = this.getDefaultCommandLineBuilder(os);
    // RM_Home set in bin/unix/env script
    clb.setRmHome(rmHome);
    ArrayList<String> paPropList = new ArrayList<>();
    if (!this.paProperties.contains(CentralPAPropertyRepository.JAVA_SECURITY_POLICY.getName())) {
        paPropList.add(CentralPAPropertyRepository.JAVA_SECURITY_POLICY.getCmdLine() + rmHome + "config" + os.fs + "security.java.policy-client");
    }
    if (!this.paProperties.contains(CentralPAPropertyRepository.PA_CONFIGURATION_FILE.getName())) {
        paPropList.add(CentralPAPropertyRepository.PA_CONFIGURATION_FILE.getCmdLine() + rmHome + "config" + os.fs + "network" + os.fs + "node.ini");
    }
    if (!this.paProperties.contains(PAResourceManagerProperties.RM_HOME.getKey())) {
        paPropList.add(PAResourceManagerProperties.RM_HOME.getCmdLine() + rmHome);
    }
    if (!this.paProperties.contains("java.library.path")) {
        paPropList.add("-Djava.library.path=" + System.getProperty("java.library.path"));
    }
    if (!paProperties.isEmpty()) {
        Collections.addAll(paPropList, this.paProperties.split(" "));
    }
    clb.setPaProperties(paPropList);
    clb.setNodeName(baseNodeName);
    clb.setNumberOfNodes(numberOfNodes);
    try {
        clb.setCredentialsValueAndNullOthers(new String(this.credentials.getBase64()));
    } catch (KeyException e) {
        createLostNodes(baseNodeName, numberOfNodes, "Cannot decrypt credentials value", e);
        return;
    }
    List<String> cmd;
    try {
        cmd = clb.buildCommandLineAsList(false);
    } catch (IOException e) {
        createLostNodes(baseNodeName, numberOfNodes, "Cannot build command line", e);
        return;
    }
    // The printed cmd with obfuscated credentials
    final String obfuscatedCmd = Joiner.on(' ').join(cmd);
    List<String> depNodeURLs = new ArrayList<>(numberOfNodes);
    final List<String> createdNodeNames = RMNodeStarter.getWorkersNodeNames(baseNodeName, numberOfNodes);
    ProcessExecutor processExecutor = null;
    try {
        depNodeURLs.addAll(addMultipleDeployingNodes(createdNodeNames, obfuscatedCmd, "Node launched locally", this.nodeTimeout));
        // Deobfuscate the cred value
        Collections.replaceAll(cmd, CommandLineBuilder.OBFUSC, clb.getCredentialsValue());
        processExecutor = new ProcessExecutor(baseNodeName, cmd, false, true);
        processExecutor.start();
        processExecutors.put(processExecutor, depNodeURLs);
        final ProcessExecutor tmpProcessExecutor = processExecutor;
        Runtime.getRuntime().addShutdownHook(new Thread(new Runnable() {

            @Override
            public void run() {
                if (tmpProcessExecutor != null && !tmpProcessExecutor.isProcessFinished()) {
                    tmpProcessExecutor.killProcess();
                }
            }
        }));
        logger.info("Local Nodes command started : " + obfuscatedCmd);
    } catch (IOException e) {
        String lf = System.lineSeparator();
        String mess = "Cannot launch rm node " + baseNodeName + lf + Throwables.getStackTraceAsString(e);
        multipleDeclareDeployingNodeLost(depNodeURLs, mess);
        if (processExecutor != null) {
            cleanProcess(processExecutor);
        }
        return;
    }
    // watching process
    int threshold = 10;
    while (!allNodesAcquiredOrLost()) {
        if (processExecutor.isProcessFinished()) {
            int exit = processExecutor.getExitCode();
            if (exit != 0) {
                String lf = System.lineSeparator();
                String message = "RMNode exit code == " + exit + lf;
                message += "Command: " + obfuscatedCmd + lf;
                String out = Joiner.on('\n').join(processExecutor.getOutput());
                String err = Joiner.on('\n').join(processExecutor.getErrorOutput());
                message += "stdout: " + out + lf + "stderr: " + err;
                multipleDeclareDeployingNodeLost(depNodeURLs, message);
            }
        } else {
            logger.debug("Waiting for nodes " + baseNodeName + " acquisition");
        }
        try {
            Thread.sleep(500);
        } catch (InterruptedException e) {
            logger.warn("Interrupted while waiting for local process status", e);
            threshold--;
            if (threshold <= 0) {
                break;
            }
        }
    }
    logger.debug("Local Infrastructure manager exits watching loop for nodes " + baseNodeName);
    logNodeOutput(baseNodeName + " stdout: ", processExecutor.getOutput());
    logNodeOutput(baseNodeName + " stderr: ", processExecutor.getErrorOutput());
    if (allNodesLost(numberOfNodes)) {
        // clean up the process
        cleanProcess(processExecutor);
    }
}

Example 38 with Command

use of org.ow2.proactive_grid_cloud_portal.cli.cmd.Command in project scheduling by ow2-proactive.

the class SSHInfrastructure method startNodeImpl.

/**
 * Internal node acquisition method
 * <p>
 * Starts a PA runtime on remote host using SSH, register it manually in the
 * nodesource.
 *
 * @param hostTracker The host on which one the node will be started
 * @param nbNodes number of nodes to deploy
 * @param depNodeURLs list of deploying or lost nodes urls created
 * @throws RMException
 *             acquisition failed
 */
protected void startNodeImpl(HostTracker hostTracker, int nbNodes, final List<String> depNodeURLs) throws RMException {
    String fs = getTargetOSObj().fs;
    CommandLineBuilder clb = super.getDefaultCommandLineBuilder(getTargetOSObj());
    // we take care of spaces in java path
    clb.setJavaPath(this.javaPath);
    // we set the rm.home prop
    clb.setRmHome(schedulingPath);
    // we set the java security policy file
    StringBuilder sb = new StringBuilder();
    final boolean containsSpace = schedulingPath.contains(" ");
    String securitycmd = CentralPAPropertyRepository.JAVA_SECURITY_POLICY.getCmdLine();
    if (!this.javaOptions.contains(securitycmd)) {
        sb.append(securitycmd);
        if (containsSpace) {
            sb.append("\"");
        }
        sb.append(schedulingPath);
        sb.append(fs);
        sb.append("config");
        sb.append(fs);
        sb.append("security.java.policy-client");
        if (containsSpace) {
            sb.append("\"");
        }
        sb.append(" ");
    }
    // we set the log4j configuration file
    String log4jcmd = CentralPAPropertyRepository.LOG4J.getCmdLine();
    if (!this.javaOptions.contains(log4jcmd)) {
        sb.append(log4jcmd);
        if (containsSpace) {
            sb.append("\"");
        }
        // log4j only understands urls
        sb.append("file:");
        if (!schedulingPath.startsWith("/")) {
            sb.append("/" + schedulingPath.replace("\\", "/"));
        } else {
            sb.append(schedulingPath.replace("\\", "/"));
        }
        sb.append("/");
        sb.append("config");
        sb.append("/");
        sb.append("log");
        sb.append("/");
        sb.append("node.properties");
        if (containsSpace) {
            sb.append("\"");
        }
        sb.append(" ");
    }
    // we add extra java/PA configuration
    sb.append(this.javaOptions);
    clb.setPaProperties(sb.toString());
    // afterwards, node's name
    // generate the node name
    // current rmcore shortID should be added to ensure uniqueness
    final String nodeName = nodeNameBuilder.generateNodeName(hostTracker);
    clb.setNodeName(nodeName);
    clb.setNumberOfNodes(nbNodes);
    // finally, the credential's value
    String credString = null;
    try {
        credString = new String(getCredentials().getBase64());
    } catch (KeyException e1) {
        throw new RMException("Could not get base64 credentials", e1);
    }
    clb.setCredentialsValueAndNullOthers(credString);
    // add an expected node. every unexpected node will be discarded
    String cmdLine;
    String obfuscatedCmdLine;
    try {
        cmdLine = clb.buildCommandLine(true);
        obfuscatedCmdLine = clb.buildCommandLine(false);
    } catch (IOException e2) {
        throw new RMException("Cannot build the " + RMNodeStarter.class.getSimpleName() + "'s command line.", e2);
    }
    // one escape the command to make it runnable through ssh
    if (cmdLine.contains("\"")) {
        cmdLine = cmdLine.replaceAll("\"", "\\\\\"");
    }
    // we create a new deploying node before ssh command ran
    final List<String> createdNodeNames = RMNodeStarter.getWorkersNodeNames(nodeName, nbNodes);
    depNodeURLs.addAll(addMultipleDeployingNodes(createdNodeNames, obfuscatedCmdLine, "Deploying nodes on host " + hostTracker.getResolvedAddress(), super.nodeTimeOut));
    addTimeouts(depNodeURLs);
    Process p = null;
    try {
        p = Utils.runSSHCommand(hostTracker.getResolvedAddress(), cmdLine, sshOptions);
    } catch (IOException e1) {
        multipleDeclareDeployingNodeLost(depNodeURLs, "Cannot run command: " + cmdLine + ", with ssh options: " + sshOptions + " -\n The following exception occutred:\n " + getStackTraceAsString(e1));
        throw new RMException("Cannot run command: " + cmdLine + ", with ssh options: " + sshOptions, e1);
    }
    String lf = System.lineSeparator();
    int circuitBreakerThreshold = 5;
    while (!anyTimedOut(depNodeURLs) && circuitBreakerThreshold > 0) {
        try {
            int exitCode = p.exitValue();
            if (exitCode != 0) {
                logger.error("SSH subprocess at " + hostTracker.getResolvedAddress().getHostName() + " exited abnormally (" + exitCode + ").");
            } else {
                logger.error("Launching node process has exited normally whereas it shouldn't.");
            }
            String pOutPut = Utils.extractProcessOutput(p);
            String pErrPut = Utils.extractProcessErrput(p);
            final String description = "SSH command failed to launch node on host " + hostTracker.getResolvedAddress().getHostName() + lf + "   >Error code: " + exitCode + lf + "   >Errput: " + pErrPut + "   >Output: " + pOutPut;
            logger.error(description);
            if (super.checkAllNodesAreAcquiredAndDo(createdNodeNames, null, new Runnable() {

                public void run() {
                    SSHInfrastructure.this.multipleDeclareDeployingNodeLost(depNodeURLs, description);
                }
            })) {
                return;
            } else {
                // there isn't any race regarding node registration
                throw new RMException("SSH Node " + nodeName + " is not expected anymore because of an error.");
            }
        } catch (IllegalThreadStateException e) {
            logger.trace("IllegalThreadStateException while waiting for " + nodeName + " registration");
        }
        if (super.checkNodeIsAcquiredAndDo(nodeName, null, null)) {
            // registration is ok, we destroy the process
            p.destroy();
            return;
        }
        try {
            Thread.sleep(1000);
        } catch (Exception e) {
            circuitBreakerThreshold--;
            logger.trace("An exception occurred while monitoring ssh subprocess", e);
        }
    }
    // if we exit because of a timeout
    if (anyTimedOut(depNodeURLs)) {
        // we remove it
        removeTimeouts(depNodeURLs);
        // we destroy the process
        p.destroy();
        throw new RMException("Deploying Node " + nodeName + " not expected any more");
    }
    if (circuitBreakerThreshold <= 0) {
        logger.error("Circuit breaker threshold reached while monitoring ssh subprocess.");
        throw new RMException("Several exceptions occurred while monitoring ssh subprocess.");
    }
}

Example 39 with Command

use of org.ow2.proactive_grid_cloud_portal.cli.cmd.Command in project scheduling by ow2-proactive.

the class SSHInfrastructureV2 method startNodeImpl.

/**
 * Internal node acquisition method
 * <p>
 * Starts a PA runtime on remote host using SSH, register it manually in the
 * nodesource.
 *
 * @param hostTracker The host on which one the node will be started
 * @param nbNodes number of nodes to deploy
 * @param depNodeURLs list of deploying or lost nodes urls created
 * @throws RMException
 *             acquisition failed
 */
public void startNodeImpl(final HostTracker hostTracker, final int nbNodes, final List<String> depNodeURLs) throws RMException {
    String fs = getTargetOSObj().fs;
    // we set the java security policy file
    ArrayList<String> sb = new ArrayList<>();
    final boolean containsSpace = schedulingPath.contains(" ");
    if (containsSpace) {
        sb.add("-Dproactive.home=\"" + schedulingPath + "\"");
    } else {
        sb.add("-Dproactive.home=" + schedulingPath);
    }
    String securitycmd = CentralPAPropertyRepository.JAVA_SECURITY_POLICY.getCmdLine();
    if (!this.javaOptions.contains(securitycmd)) {
        if (containsSpace) {
            securitycmd += "\"";
        }
        securitycmd += this.schedulingPath + fs + "config" + fs;
        securitycmd += "security.java.policy-client";
        if (containsSpace) {
            securitycmd += "\"";
        }
        sb.add(securitycmd);
    }
    // we set the log4j configuration file
    String log4jcmd = CentralPAPropertyRepository.LOG4J.getCmdLine();
    if (!this.javaOptions.contains(log4jcmd)) {
        // log4j only understands urls
        if (containsSpace) {
            log4jcmd += "\"";
        }
        log4jcmd += "file:";
        if (!this.schedulingPath.startsWith("/")) {
            log4jcmd += "/";
        }
        log4jcmd += this.schedulingPath.replace("\\", "/");
        log4jcmd += "/config/log/node.properties";
        if (containsSpace) {
            log4jcmd += "\"";
        }
        sb.add(log4jcmd);
    }
    // we add extra java/PA configuration
    if (this.javaOptions != null && !this.javaOptions.trim().isEmpty()) {
        sb.add(this.javaOptions.trim());
    }
    CommandLineBuilder clb = super.getDefaultCommandLineBuilder(getTargetOSObj());
    final boolean deployNodesInDetachedMode = PAResourceManagerProperties.RM_NODES_RECOVERY.getValueAsBoolean() || PAResourceManagerProperties.RM_PRESERVE_NODES_ON_SHUTDOWN.getValueAsBoolean();
    if (deployNodesInDetachedMode) {
        // if we do not want to kill the nodes when the RM exits or
        // restarts, then we should launch the nodes in background and
        // ignore the RM termination signal
        clb.setDetached();
    }
    clb.setJavaPath(this.javaPath);
    clb.setRmHome(this.schedulingPath);
    clb.setPaProperties(sb);
    final String nodeName = nodeNameBuilder.generateNodeName(hostTracker);
    clb.setNodeName(nodeName);
    clb.setNumberOfNodes(nbNodes);
    // finally, the credential's value
    String credString;
    try {
        Client currentClient = super.nodeSource.getAdministrator();
        credString = new String(currentClient.getCredentials().getBase64());
    } catch (KeyException e) {
        throw new RMException("Could not get base64 credentials", e);
    }
    clb.setCredentialsValueAndNullOthers(credString);
    // add an expected node. every unexpected node will be discarded
    String cmdLine;
    String obfuscatedCmdLine;
    try {
        cmdLine = clb.buildCommandLine(true);
        obfuscatedCmdLine = clb.buildCommandLine(false);
    } catch (IOException e) {
        throw new RMException("Cannot build the " + RMNodeStarter.class.getSimpleName() + "'s command line.", e);
    }
    // one escape the command to make it runnable through ssh
    if (cmdLine.contains("\"")) {
        cmdLine = cmdLine.replaceAll("\"", "\\\\\"");
    }
    final String finalCmdLine = cmdLine;
    // The final addDeployingNode() method will initiate a timeout that
    // will declare node as lost and set the description of the failure
    // with a simplistic message, since there is no way to override this
    // mechanism we consider only 90% of timeout to set custom description
    // in case of failure and still allow global timeout
    final int shorterTimeout = Math.round((90 * super.nodeTimeOut) / 100);
    JSch jsch = new JSch();
    final String msg = "deploy on " + hostTracker.getResolvedAddress();
    final List<String> createdNodeNames = RMNodeStarter.getWorkersNodeNames(nodeName, nbNodes);
    depNodeURLs.addAll(addMultipleDeployingNodes(createdNodeNames, obfuscatedCmdLine, msg, super.nodeTimeOut));
    addTimeouts(depNodeURLs);
    Session session;
    try {
        // Create ssh session to the hostname
        session = jsch.getSession(this.sshUsername, hostTracker.getResolvedAddress().getHostName(), this.sshPort);
        if (this.sshPassword == null) {
            jsch.addIdentity(this.sshUsername, this.sshPrivateKey, null, null);
        } else {
            session.setPassword(this.sshPassword);
        }
        session.setConfig(this.sshOptions);
        session.connect(shorterTimeout);
    } catch (JSchException e) {
        multipleDeclareDeployingNodeLost(depNodeURLs, "unable to " + msg + "\n" + getStackTraceAsString(e));
        throw new RMException("unable to " + msg, e);
    }
    SSHInfrastructureV2.logger.info("Executing SSH command: '" + finalCmdLine + "'");
    ScheduledExecutorService deployService = Executors.newSingleThreadScheduledExecutor();
    try {
        // Create ssh channel to run the cmd
        ByteArrayOutputStream baos = new ByteArrayOutputStream(DEFAULT_OUTPUT_BUFFER_LENGTH);
        ChannelExec channel;
        try {
            channel = (ChannelExec) session.openChannel("exec");
            channel.setCommand(finalCmdLine);
            channel.setOutputStream(baos);
            channel.setErrStream(baos);
            channel.connect();
        } catch (JSchException e) {
            multipleDeclareDeployingNodeLost(depNodeURLs, "unable to " + msg + "\n" + getStackTraceAsString(e));
            throw new RMException("unable to " + msg, e);
        }
        final ChannelExec chan = channel;
        Future<Void> deployResult = deployService.submit(new Callable<Void>() {

            @Override
            public Void call() throws Exception {
                while (!shutDown.get() && !checkAllNodesAreAcquiredAndDo(createdNodeNames, null, null)) {
                    if (anyTimedOut(depNodeURLs)) {
                        throw new IllegalStateException("The upper infrastructure has issued a timeout");
                    }
                    // processes live completely independently
                    if (!deployNodesInDetachedMode && chan.getExitStatus() != PROCESS_STILL_RUNNING_VALUE) {
                        throw new IllegalStateException("The jvm process of the node has exited prematurely");
                    }
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        // we know the cause of this
                        return null;
                    // interruption just exit
                    }
                }
                // Victory
                return null;
            }
        });
        try {
            deployResult.get(shorterTimeout, TimeUnit.MILLISECONDS);
        } catch (ExecutionException e) {
            declareLostAndThrow("Unable to " + msg + " due to " + e.getCause(), depNodeURLs, channel, baos, e);
        } catch (InterruptedException e) {
            deployResult.cancel(true);
            declareLostAndThrow("Unable to " + msg + " due to an interruption", depNodeURLs, channel, baos, e);
        } catch (TimeoutException e) {
            deployResult.cancel(true);
            declareLostAndThrow("Unable to " + msg + " due to timeout", depNodeURLs, channel, baos, e);
        } finally {
            channel.disconnect();
        }
    } finally {
        removeTimeouts(depNodeURLs);
        session.disconnect();
        deployService.shutdownNow();
    }
}

Example 40 with Command

use of org.ow2.proactive_grid_cloud_portal.cli.cmd.Command in project scheduling by ow2-proactive.

the class CommandLineBuilder method buildCommandLineAsList.

/**
 * Same as {@link CommandLineBuilder#buildCommandLine(boolean)} but the command is a list of String.
 * @param displayCredentials if true displays the credentials in the command line if false, obfuscates them
 * @return The RMNodeStarter command line as a list of String.
 * @throws java.io.IOException if you supplied a ProActive Configuration file that doesn't exist.
 */
public List<String> buildCommandLineAsList(boolean displayCredentials) throws IOException {
    final ArrayList<String> command = new ArrayList<>();
    final OperatingSystem os = targetOS;
    final Properties paProp = paPropProperties;
    String rmHome = this.getRmHome();
    if (rmHome != null) {
        if (!rmHome.endsWith(os.fs)) {
            rmHome = rmHome + os.fs;
        }
    } else {
        rmHome = "";
    }
    if (detached) {
        makeDetachedCommand(command, os);
    }
    final String libRoot = rmHome + "dist" + os.fs + "lib" + os.fs;
    String javaPath = this.javaPath;
    if (javaPath != null) {
        command.add(javaPath);
    } else {
        RMNodeStarter.logger.warn("Java path isn't set in RMNodeStarter configuration.");
        command.add("java");
    }
    // building configuration
    if (paProp != null) {
        Set<Object> keys = paProp.keySet();
        for (Object key : keys) {
            command.add("-D" + key + "=" + paProp.get(key));
        }
    } else {
        if (this.paPropList != null) {
            command.addAll(this.paPropList);
        }
    }
    // forward current charset to the forked JVM
    String currentJvmCharset = PAProperties.getFileEncoding();
    command.add("-Dfile.encoding=" + currentJvmCharset);
    RMNodeStarter.logger.info("Using '" + currentJvmCharset + "' as file encoding");
    // building classpath
    command.add("-cp");
    final StringBuilder classpath = new StringBuilder(".");
    // add the content of addons dir on the classpath
    classpath.append(os.ps).append(rmHome).append(ADDONS_DIR);
    // add jars inside the addons directory
    classpath.append(os.ps).append(rmHome).append(ADDONS_DIR).append(os.fs).append("*");
    classpath.append(os.ps).append(libRoot).append("*");
    command.add(classpath.toString());
    command.add(RMNodeStarter.class.getName());
    // appending options
    String credsEnv = credentialsEnv;
    if (credsEnv != null) {
        command.add("-" + RMNodeStarter.OPTION_CREDENTIAL_ENV);
        command.add(credsEnv);
    }
    String credsFile = this.getCredentialsFile();
    if (credsFile != null) {
        command.add("-" + RMNodeStarter.OPTION_CREDENTIAL_FILE);
        command.add(credsFile);
    }
    String credsValue = this.getCredentialsValue();
    if (credsValue != null) {
        command.add("-" + RMNodeStarter.OPTION_CREDENTIAL_VAL);
        command.add(displayCredentials ? credsValue : OBFUSC);
    }
    String nodename = this.getNodeName();
    if (nodename != null) {
        command.add("-" + RMNodeStarter.OPTION_NODE_NAME);
        command.add(nodename);
    }
    String nodesource = this.getSourceName();
    if (nodesource != null) {
        command.add("-" + RMNodeStarter.OPTION_SOURCE_NAME);
        command.add(nodesource);
    }
    String rmurl = rmURL;
    if (rmurl != null) {
        command.add("-" + RMNodeStarter.OPTION_RM_URL);
        command.add(rmurl);
    }
    command.add("-" + RMNodeStarter.OPTION_WORKERS);
    command.add("" + nbNodes);
    if (detached && os.equals(OperatingSystem.UNIX)) {
        command.add("&");
    }
    return command;
}