com.tibco.bw.maven.plugin.process.ProcessExecutor Maven / Gradle / Ivy

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Plugin Code for Apache Maven and TIBCO BusinessWorks™. This is the Maven Plugin for BW6 and BWCE Build.

There is a newer version: 2.9.9

package com.tibco.bw.maven.plugin.process;

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.List;
import java.util.concurrent.CountDownLatch;

import org.codehaus.plexus.logging.Logger;

public class ProcessExecutor {
	private String executorHome;
    private final Logger logger;
    CountDownLatch latch = new CountDownLatch(1);

	public ProcessExecutor(String executorHome, Logger logger) {
		this.executorHome = executorHome;
		this.logger = logger;
	}

	public Process executeProcess(List params ) throws Exception {
		logger.debug( "Executing command =-> " + params.toString());
		ProcessBuilder builder = new ProcessBuilder( params);
        builder.directory( new File( executorHome ) );
        final Process process = builder.start();	
        final StringBuilder sb  = new StringBuilder();

        Runnable input = getInputRunnable(process, sb);
        Runnable error = getErrorRunnable(process, sb);

        Thread inputThread = new Thread( input );
		Thread errorThread = new Thread( error );
		inputThread.start();
		errorThread.start();

		latch.await();
		
		
        return process;
	}

	public String executeProcessEngine(List params ) throws Exception {
		logger.debug( "Executing command =-> " + params.toString());
		ProcessBuilder builder = new ProcessBuilder( params);
        builder.directory( new File( executorHome ) );
        final Process process = builder.start();	
        final StringBuilder sb  = new StringBuilder();

        Runnable input = getInputRunnable(process, sb);
        Runnable error = getErrorRunnable(process, sb);

        Thread inputThread = new Thread( input );
		Thread errorThread = new Thread( error );
		inputThread.start();
		errorThread.start();

		int exitValue = process.waitFor();
        logger.debug("Executed command with Exit Value " + exitValue ); 
        return sb.toString();
	}
	
	private Runnable getErrorRunnable(final Process process, final StringBuilder sb) {
		Runnable error = new Runnable() {
			public void run() {
				try {
					InputStream is = process.getErrorStream();
					InputStreamReader isr = new InputStreamReader(is);
					BufferedReader br = new BufferedReader(isr);
					String line;
			        while((line = br.readLine()) != null) {
			            sb.append( line );
			        }
				} catch(Exception e) {
		        	logger.error ( e.getMessage() , e);
		        }
			}
		};
		return error;
	}

	private Runnable getInputRunnable(final Process process, final StringBuilder sb) {
		Runnable input = new Runnable() {
			public void run() {
				try {
					InputStream is = process.getInputStream(); 
					InputStreamReader isr = new InputStreamReader(is);
					BufferedReader br = new BufferedReader(isr);
					String line;		        
			        while((line = br.readLine()) != null) {
			            sb.append( line );
			        }
				} catch(Exception e) {
		        	logger.error ( e.getMessage() , e);
		        }
			}
		};
		return input;
	}
}