Examples of dan.util.process.CommandProcess

dan.util.process.CommandProcess

A class to run external programs from within Java. This class serves as a wrapper for Java's Runtime.exec() method which overcomes some of the difficulties of that method. Specifically, executing tasks with Runtime.exec() can cause a program to hang indefinitely. This may happen when the program is producing output on STDOUT and/or STDERR. If the output is not read it will accumulate in memory until the output buffers are full and the program will halt. To this end, StreamHandlers are executed asynchronously by this class when a process is run. These can either simply consume the output so that the program does not block or they can redirect the output to a given OutputStream. Also, we allow one to easily specify a working directory and a map of environmental variables to pass to the process. If custom environmental variables are set, we add these to the current set of variables available in System.getenv(). @author dan.rogers

    if (!workingDirectory.exists())
      workingDirectory.mkdirs();


    prepareScript();


    CommandProcess process = new CommandProcess();
    process.setCommand(execCmd);


    process.setWorkingDirectory(workingDirectory);


    FileOutputStream out = new FileOutputStream(new File(workingDirectory, stdoutFile));
    FileOutputStream err = new FileOutputStream(new File(workingDirectory, stderrFile));


    process.setOutputStream(out, true);
    process.setErrorStream(err, true);


    return process.start();
  }

Examples of dan.util.process.CommandProcess

Related Classes of dan.util.process.CommandProcess