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package com.sun.enterprise.cli.commands;
import com.sun.enterprise.util.io.StreamFlusher;
import com.sun.enterprise.util.OS;
import java.io.File;
/**
* CLIProcessExecutor
* A simple process executor class that is used by CLI.
* @author jane.young@sun.com
* @version $Revision: 1.6 $
*/
public class CLIProcessExecutor
{
Process process;
public CLIProcessExecutor() {
process = null;
}
/**
* This method invokes the runtime exec
* @param cmd the command to execute
* @param wait if true, wait for process to end.
* @exception Exception
*/
public void execute(String[] cmd, boolean wait) throws Exception
{
process=Runtime.getRuntime().exec(cmd);
//process = new ProcessBuilder(cmd).start();
// start stream flusher to push output to parent streams and null.
StreamFlusher sfErr=new StreamFlusher(process.getErrorStream(), System.err, null);
sfErr.start();
// set flusher on stdout also, if not could stop with too much output
StreamFlusher sfOut=new StreamFlusher(process.getInputStream(), System.out);
sfOut.start();
try {
// must sleep for a couple of seconds, so if there is a jvm startup error,
//the parent process
//is around to catch and report it when the process in executed in verbose mode.
Thread.currentThread().sleep(5000);
//wait is not required for command like start database
//where the process does not return since start database
//spawn it's own process.
if (wait) {
process.waitFor();
}
}
catch (InterruptedException ie) {
}
}
/**
return the exit value of this process.
if process is null, then there is no process running
therefore the return value is 0.
*/
public int exitValue() {
if (process == null) return -1;
return process.exitValue();
}
}