Examples with ProcessOut es.bsc.compss.nio.master.handlers.ProcessOut used on opensource projects

Example 1 with ProcessOut

use of es.bsc.compss.nio.master.handlers.ProcessOut in project compss by bsc-wdc.

the class WorkerStarter method killPreviousWorker.

private void killPreviousWorker(String user, String name, int pid) throws InitNodeException {
    if (pid != -1) {
        // Command was started but it is not possible to contact to the worker
        String[] command = getStopCommand(pid);
        ProcessOut po = executeCommand(user, name, command);
        if (po == null) {
            // Queue System managed worker starter
            LOGGER.error("[START_CMD_ERROR]: An Error has occurred when queue system started NIO worker in resource " + name + ". Retries not available in this option.");
            throw new InitNodeException("[START_CMD_ERROR]: An Error has occurred when queue system started NIO worker in resource " + name + ". Retries not available in this option.");
        } else if (po.getExitValue() != 0) {
            // Normal starting process
            LOGGER.error(ERROR_SHUTTING_DOWN_RETRY);
        }
    }
}

Example 2 with ProcessOut

use of es.bsc.compss.nio.master.handlers.ProcessOut in project compss by bsc-wdc.

the class WorkerStarter method executeCommand.

private ProcessOut executeCommand(String user, String resource, String[] command) {
    ProcessOut processOut = new ProcessOut();
    String[] cmd = this.nw.getConfiguration().getRemoteExecutionCommand(user, resource, command);
    if (cmd == null) {
        LOGGER.warn("Worker configured to be sarted by queue system.");
        return null;
    }
    // Log command
    StringBuilder sb = new StringBuilder("");
    for (String param : cmd) {
        sb.append(param).append(" ");
    }
    LOGGER.debug("COMM CMD: " + sb.toString());
    // Execute command
    try {
        ProcessBuilder pb = new ProcessBuilder();
        pb.environment().remove(Tracer.LD_PRELOAD);
        pb.command(cmd);
        Process process = pb.start();
        InputStream stderr = process.getErrorStream();
        InputStream stdout = process.getInputStream();
        process.getOutputStream().close();
        process.waitFor();
        processOut.setExitValue(process.exitValue());
        BufferedReader reader = new BufferedReader(new InputStreamReader(stdout));
        String line;
        while ((line = reader.readLine()) != null) {
            processOut.appendOutput(line);
            LOGGER.debug("COMM CMD OUT: " + line);
        }
        reader = new BufferedReader(new InputStreamReader(stderr));
        while ((line = reader.readLine()) != null) {
            processOut.appendError(line);
            LOGGER.debug("COMM CMD ERR: " + line);
        }
    } catch (Exception e) {
        LOGGER.error("Exception initializing worker ", e);
    }
    return processOut;
}

Example 3 with ProcessOut

use of es.bsc.compss.nio.master.handlers.ProcessOut in project compss by bsc-wdc.

the class WorkerStarter method startWorker.

private int startWorker(String user, String name, int port) throws InitNodeException {
    // Initial wait
    try {
        Thread.sleep(START_WORKER_INITIAL_WAIT);
    } catch (InterruptedException ie) {
        Thread.currentThread().interrupt();
    }
    long timer = START_WORKER_INITIAL_WAIT;
    // Try to launch the worker until we receive the PID or we timeout
    int pid = -1;
    String[] command = getStartCommand(port);
    do {
        ProcessOut po = executeCommand(user, name, command);
        if (po == null) {
            // Queue System managed worker starter
            LOGGER.debug("Worker process started in resource " + name + " by queue system.");
            pid = 0;
        } else if (po.getExitValue() == 0) {
            // Success
            String output = po.getOutput();
            String[] lines = output.split("\n");
            pid = Integer.parseInt(lines[lines.length - 1]);
        } else {
            if (timer > MAX_WAIT_FOR_SSH) {
                // Timeout
                throw new InitNodeException("[START_CMD_ERROR]: Could not start the NIO worker in resource " + name + " through user " + user + ".\n" + "OUTPUT:" + po.getOutput() + "\n" + "ERROR:" + po.getError() + "\n");
            }
            LOGGER.warn(" Worker process failed to start in resource " + name + ". Retrying...");
        }
        // Sleep between retries
        try {
            Thread.sleep(4 * WAIT_TIME_UNIT);
        } catch (InterruptedException ie) {
            Thread.currentThread().interrupt();
        }
        timer = timer + (4 * WAIT_TIME_UNIT);
    } while (pid < 0);
    return pid;
}