ant/org.eclipse.ant.ui/Ant Tools Support/org/eclipse/ant/internal/ui/debug/model/RemoteAntDebugBuildListener.java - platform/eclipse.platform - Git at Google

 /*******************************************************************************
  * Copyright (c) 2003, 2004 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/cpl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/

 package org.eclipse.ant.internal.ui.debug.model;

 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.PrintWriter;
 import java.net.Socket;
 import java.net.UnknownHostException;

 import org.eclipse.ant.internal.ui.AntUIPlugin;
 import org.eclipse.ant.internal.ui.debug.IAntDebugController;
 import org.eclipse.ant.internal.ui.launchConfigurations.RemoteAntBuildListener;
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.debug.core.DebugEvent;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.core.ILaunch;
 import org.eclipse.debug.core.model.IBreakpoint;
 import org.eclipse.debug.core.model.ILineBreakpoint;
 import org.eclipse.debug.core.model.IProcess;

 public class RemoteAntDebugBuildListener extends RemoteAntBuildListener implements IAntDebugController {

 	// sockets to communicate with the remote Ant debug build logger
 	private Socket fRequestSocket;
 	private PrintWriter fRequestWriter;
 	private BufferedReader fResponseReader;

 	private int fRequestPort= -1;
 	private Thread fReaderThread;

 	private AntDebugTarget fTarget;

 	/**
 	 * Reader thread that processes request responses from the remote Ant debug build logger
 	 */
 	private class ReaderThread extends Thread {
 		public ReaderThread() {
 			super("Ant Request Response Reader Thread"); //$NON-NLS-1$
 			setDaemon(true);
 		}

 		public void run(){
 			try {
 				String message= null;
 				while (fResponseReader != null) {
 				    synchronized (RemoteAntDebugBuildListener.this) {
 				        if (fResponseReader != null && (message= fResponseReader.readLine()) != null) {
 				            receiveMessage(message);
 				        }
 				    }
 				}
 			} catch (IOException ie) { //the other end has shutdown
 				RemoteAntDebugBuildListener.this.shutDown();
 			} catch (Exception e) {
 				AntUIPlugin.log("Internal error processing remote response", e); //$NON-NLS-1$
 				RemoteAntDebugBuildListener.this.shutDown();
 			}
 		}
 	}

 	public RemoteAntDebugBuildListener(ILaunch launch) {
 		super(launch);
 		//fDebug= true;
 	}

 	protected void receiveMessage(String message) {
 		if (fDebug) {
 			System.out.println(message);
 		}
 		if (message.startsWith(DebugMessageIds.BUILD_STARTED)) {
 			buildStarted();
 		} else if (message.startsWith(DebugMessageIds.SUSPENDED)){
 			handleSuspendMessage(message);
 		} else if (message.startsWith(DebugMessageIds.TERMINATED)){
 			fTarget.terminated();
 		} else if (message.startsWith(DebugMessageIds.STACK)){
 			AntThread thread= (AntThread) fTarget.getThreads()[0];
 			thread.buildStack(message);
 		} else if (message.startsWith(DebugMessageIds.PROPERTIES)){
 		    AntThread thread= (AntThread) fTarget.getThreads()[0];
 		    thread.newProperties(message);
 		} else {
 			super.receiveMessage(message);
 		}
 	}

     private void handleSuspendMessage(String message) {
         if (message.endsWith(DebugMessageIds.CLIENT_REQUEST)) {
         	fTarget.suspended(DebugEvent.CLIENT_REQUEST);
         } else if (message.endsWith(DebugMessageIds.STEP)) {
         	fTarget.suspended(DebugEvent.STEP_END);
         } else if (message.indexOf(DebugMessageIds.BREAKPOINT) >= 0) {
         	fTarget.breakpointHit(message);
         }
     }

     private void buildStarted() {
         IProcess process= getProcess();
         while(process == null) {
         	try {
         		synchronized (this) {
         			wait(400);
         		}
         		process= getProcess();
         	} catch (InterruptedException ie) {
         	}
         }
         fTarget= new AntDebugTarget(fLaunch, process, this);
         fLaunch.addDebugTarget(fTarget);

         if (!connectRequest()) {
 			RemoteAntDebugBuildListener.this.shutDown();
 			return;
         }

         fTarget.buildStarted();
     }

     private boolean connectRequest() {
     	Exception exception= null;
     	for (int i= 1; i < 20; i++) {
     		try {
     			fRequestSocket = new Socket("localhost", fRequestPort); //$NON-NLS-1$
     			fRequestWriter = new PrintWriter(fRequestSocket.getOutputStream(), true);
     			fResponseReader = new BufferedReader(new InputStreamReader(fRequestSocket.getInputStream()));

     			fReaderThread= new ReaderThread();
     			fReaderThread.start();
     			return true;
     		} catch (UnknownHostException e) {
     			exception= e;
     			break;
     		} catch (IOException e) {
     			exception= e;
     		}
     		try {
 				Thread.sleep(500);
 			} catch(InterruptedException e) {
 			}
     	}
     	AntUIPlugin.log("Internal error attempting to connect to debug target", exception); //$NON-NLS-1$
     	return false;
 	}

 	/**
 	 * Start listening to an Ant build. Start a server connection that
 	 * the RemoteAntDebugBuildLogger can connect to.
 	 *
 	 * @param port The port number to create the server connection on
 	 */
 	public synchronized void startListening(int eventPort, int requestPort) {
 		super.startListening(eventPort);
 		fRequestPort= requestPort;
 	}

 	/**
 	 * Sends a request to the Ant build
 	 *
 	 * @param request debug command
 	 */
 	protected void sendRequest(String request) {
 		if (fRequestSocket == null) {
 			return;
 		}
 		synchronized (fRequestSocket) {
 			fRequestWriter.println(request);
 		}
 	}

 	protected synchronized void shutDown() {
 		if (fDebug) {
 			System.out.println("shutdown " + fRequestPort); //$NON-NLS-1$
 		}
         if (fTarget != null) {
             fTarget.terminated();
             fTarget= null;
         }
 		fLaunch= null;
 		DebugPlugin.getDefault().getLaunchManager().removeLaunchListener(this);
 		try {
 			if (fReaderThread != null)   {
 				// interrupt reader thread so that we don't block on close
 				// on a lock held by the BufferedReader
 				// see bug: 38955
 				fReaderThread.interrupt();
 			}
 			if (fResponseReader != null) {
 				fResponseReader.close();
 				fResponseReader= null;
 			}
 		} catch(IOException e) {
 		}
 		if (fRequestWriter != null) {
 			fRequestWriter.close();
 			fRequestWriter= null;
 		}
 		try{
 			if(fRequestSocket != null) {
 				fRequestSocket.close();
 				fRequestSocket= null;
 			}
 		} catch(IOException e) {
 		}
 		super.shutDown();
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ant.internal.ui.debug.IAntDebugController#resume()
 	 */
 	public void resume() {
 		sendRequest(DebugMessageIds.RESUME);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ant.internal.ui.debug.IAntDebugController#suspend()
 	 */
 	public void suspend() {
 		sendRequest(DebugMessageIds.SUSPEND);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ant.internal.ui.debug.IAntDebugController#stepInto()
 	 */
 	public void stepInto() {
 		sendRequest(DebugMessageIds.STEP_INTO);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ant.internal.ui.debug.IAntDebugController#stepOver()
 	 */
 	public void stepOver() {
 		sendRequest(DebugMessageIds.STEP_OVER);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ant.internal.ui.debug.IAntDebugController#handleBreakpoint(IBreakpoint, boolean)
 	 */
 	public void handleBreakpoint(IBreakpoint breakpoint, boolean add) {
 		if (fTarget == null || !fTarget.supportsBreakpoint(breakpoint)) {
 			return;
 		}
 		StringBuffer message= new StringBuffer();
 		if (add) {
 			try {
 				if (!breakpoint.isEnabled()) {
 					return;
 				}
 			} catch (CoreException e) {
 				AntUIPlugin.log(e);
 				return;
 			}
 			message.append(DebugMessageIds.ADD_BREAKPOINT);
 		} else {
 			message.append(DebugMessageIds.REMOVE_BREAKPOINT);
 		}
 		message.append(DebugMessageIds.MESSAGE_DELIMITER);
 		message.append(breakpoint.getMarker().getResource().getLocation().toOSString());
 		message.append(DebugMessageIds.MESSAGE_DELIMITER);
 		try {
 			message.append(((ILineBreakpoint)breakpoint).getLineNumber());
 			sendRequest(message.toString());
 		} catch (CoreException ce) {
 			AntUIPlugin.log(ce);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ant.internal.ui.debug.IAntDebugController#getProperties()
 	 */
 	public void getProperties() {
 		sendRequest(DebugMessageIds.PROPERTIES);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ant.internal.ui.debug.IAntDebugController#getStackFrames()
 	 */
 	public void getStackFrames() {
 		sendRequest(DebugMessageIds.STACK);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2003, 2004 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Common Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/cpl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/

	package org.eclipse.ant.internal.ui.debug.model;

	import java.io.BufferedReader;
	import java.io.IOException;
	import java.io.InputStreamReader;
	import java.io.PrintWriter;
	import java.net.Socket;
	import java.net.UnknownHostException;

	import org.eclipse.ant.internal.ui.AntUIPlugin;
	import org.eclipse.ant.internal.ui.debug.IAntDebugController;
	import org.eclipse.ant.internal.ui.launchConfigurations.RemoteAntBuildListener;
	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.debug.core.DebugEvent;
	import org.eclipse.debug.core.DebugPlugin;
	import org.eclipse.debug.core.ILaunch;
	import org.eclipse.debug.core.model.IBreakpoint;
	import org.eclipse.debug.core.model.ILineBreakpoint;
	import org.eclipse.debug.core.model.IProcess;

	public class RemoteAntDebugBuildListener extends RemoteAntBuildListener implements IAntDebugController {

	// sockets to communicate with the remote Ant debug build logger
	private Socket fRequestSocket;
	private PrintWriter fRequestWriter;
	private BufferedReader fResponseReader;

	private int fRequestPort= -1;
	private Thread fReaderThread;

	private AntDebugTarget fTarget;

	/**
	* Reader thread that processes request responses from the remote Ant debug build logger
	*/
	private class ReaderThread extends Thread {
	public ReaderThread() {
	super("Ant Request Response Reader Thread"); //$NON-NLS-1$
	setDaemon(true);
	}

	public void run(){
	try {
	String message= null;
	while (fResponseReader != null) {
	synchronized (RemoteAntDebugBuildListener.this) {
	if (fResponseReader != null && (message= fResponseReader.readLine()) != null) {
	receiveMessage(message);
	}
	}
	}
	} catch (IOException ie) { //the other end has shutdown
	RemoteAntDebugBuildListener.this.shutDown();
	} catch (Exception e) {
	AntUIPlugin.log("Internal error processing remote response", e); //$NON-NLS-1$
	RemoteAntDebugBuildListener.this.shutDown();
	}
	}
	}

	public RemoteAntDebugBuildListener(ILaunch launch) {
	super(launch);
	//fDebug= true;
	}

	protected void receiveMessage(String message) {
	if (fDebug) {
	System.out.println(message);
	}
	if (message.startsWith(DebugMessageIds.BUILD_STARTED)) {
	buildStarted();
	} else if (message.startsWith(DebugMessageIds.SUSPENDED)){
	handleSuspendMessage(message);
	} else if (message.startsWith(DebugMessageIds.TERMINATED)){
	fTarget.terminated();
	} else if (message.startsWith(DebugMessageIds.STACK)){
	AntThread thread= (AntThread) fTarget.getThreads()[0];
	thread.buildStack(message);
	} else if (message.startsWith(DebugMessageIds.PROPERTIES)){
	AntThread thread= (AntThread) fTarget.getThreads()[0];
	thread.newProperties(message);
	} else {
	super.receiveMessage(message);
	}
	}

	private void handleSuspendMessage(String message) {
	if (message.endsWith(DebugMessageIds.CLIENT_REQUEST)) {
	fTarget.suspended(DebugEvent.CLIENT_REQUEST);
	} else if (message.endsWith(DebugMessageIds.STEP)) {
	fTarget.suspended(DebugEvent.STEP_END);
	} else if (message.indexOf(DebugMessageIds.BREAKPOINT) >= 0) {
	fTarget.breakpointHit(message);
	}
	}

	private void buildStarted() {
	IProcess process= getProcess();
	while(process == null) {
	try {
	synchronized (this) {
	wait(400);
	}
	process= getProcess();
	} catch (InterruptedException ie) {
	}
	}
	fTarget= new AntDebugTarget(fLaunch, process, this);
	fLaunch.addDebugTarget(fTarget);

	if (!connectRequest()) {
	RemoteAntDebugBuildListener.this.shutDown();
	return;
	}

	fTarget.buildStarted();
	}

	private boolean connectRequest() {
	Exception exception= null;
	for (int i= 1; i < 20; i++) {
	try {
	fRequestSocket = new Socket("localhost", fRequestPort); //$NON-NLS-1$
	fRequestWriter = new PrintWriter(fRequestSocket.getOutputStream(), true);
	fResponseReader = new BufferedReader(new InputStreamReader(fRequestSocket.getInputStream()));

	fReaderThread= new ReaderThread();
	fReaderThread.start();
	return true;
	} catch (UnknownHostException e) {
	exception= e;
	break;
	} catch (IOException e) {
	exception= e;
	}
	try {
	Thread.sleep(500);
	} catch(InterruptedException e) {
	}
	}
	AntUIPlugin.log("Internal error attempting to connect to debug target", exception); //$NON-NLS-1$
	return false;
	}

	/**
	* Start listening to an Ant build. Start a server connection that
	* the RemoteAntDebugBuildLogger can connect to.
	*
	* @param port The port number to create the server connection on
	*/
	public synchronized void startListening(int eventPort, int requestPort) {
	super.startListening(eventPort);
	fRequestPort= requestPort;
	}

	/**
	* Sends a request to the Ant build
	*
	* @param request debug command
	*/
	protected void sendRequest(String request) {
	if (fRequestSocket == null) {
	return;
	}
	synchronized (fRequestSocket) {
	fRequestWriter.println(request);
	}
	}

	protected synchronized void shutDown() {
	if (fDebug) {
	System.out.println("shutdown " + fRequestPort); //$NON-NLS-1$
	}
	if (fTarget != null) {
	fTarget.terminated();
	fTarget= null;
	}
	fLaunch= null;
	DebugPlugin.getDefault().getLaunchManager().removeLaunchListener(this);
	try {
	if (fReaderThread != null) {
	// interrupt reader thread so that we don't block on close
	// on a lock held by the BufferedReader
	// see bug: 38955
	fReaderThread.interrupt();
	}
	if (fResponseReader != null) {
	fResponseReader.close();
	fResponseReader= null;
	}
	} catch(IOException e) {
	}
	if (fRequestWriter != null) {
	fRequestWriter.close();
	fRequestWriter= null;
	}
	try{
	if(fRequestSocket != null) {
	fRequestSocket.close();
	fRequestSocket= null;
	}
	} catch(IOException e) {
	}
	super.shutDown();
	}

	/* (non-Javadoc)
	* @see org.eclipse.ant.internal.ui.debug.IAntDebugController#resume()
	*/
	public void resume() {
	sendRequest(DebugMessageIds.RESUME);
	}

	/* (non-Javadoc)
	* @see org.eclipse.ant.internal.ui.debug.IAntDebugController#suspend()
	*/
	public void suspend() {
	sendRequest(DebugMessageIds.SUSPEND);
	}

	/* (non-Javadoc)
	* @see org.eclipse.ant.internal.ui.debug.IAntDebugController#stepInto()
	*/
	public void stepInto() {
	sendRequest(DebugMessageIds.STEP_INTO);
	}

	/* (non-Javadoc)
	* @see org.eclipse.ant.internal.ui.debug.IAntDebugController#stepOver()
	*/
	public void stepOver() {
	sendRequest(DebugMessageIds.STEP_OVER);
	}

	/* (non-Javadoc)
	* @see org.eclipse.ant.internal.ui.debug.IAntDebugController#handleBreakpoint(IBreakpoint, boolean)
	*/
	public void handleBreakpoint(IBreakpoint breakpoint, boolean add) {
	if (fTarget == null \|\| !fTarget.supportsBreakpoint(breakpoint)) {
	return;
	}
	StringBuffer message= new StringBuffer();
	if (add) {
	try {
	if (!breakpoint.isEnabled()) {
	return;
	}
	} catch (CoreException e) {
	AntUIPlugin.log(e);
	return;
	}
	message.append(DebugMessageIds.ADD_BREAKPOINT);
	} else {
	message.append(DebugMessageIds.REMOVE_BREAKPOINT);
	}
	message.append(DebugMessageIds.MESSAGE_DELIMITER);
	message.append(breakpoint.getMarker().getResource().getLocation().toOSString());
	message.append(DebugMessageIds.MESSAGE_DELIMITER);
	try {
	message.append(((ILineBreakpoint)breakpoint).getLineNumber());
	sendRequest(message.toString());
	} catch (CoreException ce) {
	AntUIPlugin.log(ce);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.ant.internal.ui.debug.IAntDebugController#getProperties()
	*/
	public void getProperties() {
	sendRequest(DebugMessageIds.PROPERTIES);
	}

	/* (non-Javadoc)
	* @see org.eclipse.ant.internal.ui.debug.IAntDebugController#getStackFrames()
	*/
	public void getStackFrames() {
	sendRequest(DebugMessageIds.STACK);
	}
	}