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Code Issues Releases Wiki Activity

New listener implementation for packet reader (SMACK-205).

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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@7232 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Matt Tucker 2007-02-21 00:57:31 +00:00 committed by matt
parent 9356de64bd
commit 1eb4841970
4 changed files with 60 additions and 130 deletions
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149
source/org/jivesoftware/smack/PacketReader.java
View file

@ -44,7 +44,7 @@ import java.util.concurrent.*;
class PacketReader {
private Thread readerThread;
private Thread listenerThread;
private ExecutorService listenerExecutor;
private XMPPConnection connection;
private XmlPullParser parser;
@ -58,7 +58,7 @@ class PacketReader {
private String connectionID = null;
private Semaphore connectionSemaphore;
protected PacketReader(XMPPConnection connection) {
protected PacketReader(final XMPPConnection connection) {
this.connection = connection;
this.init();
}
@ -79,18 +79,17 @@ class PacketReader {
readerThread.setName("Smack Packet Reader (" + connection.connectionCounterValue + ")");
readerThread.setDaemon(true);
listenerThread = new Thread() {
public void run() {
try {
processListeners(this);
// Create an executor to deliver incoming packets to listeners. We'll use a single
// thread with an unbounded queue.
listenerExecutor = Executors.newSingleThreadExecutor(new ThreadFactory() {
public Thread newThread(Runnable runnable) {
Thread thread = new Thread(runnable,
"Smack Listener Processor (" + connection.connectionCounterValue + ")");
thread.setDaemon(true);
return thread;
}
catch (Exception e) {
e.printStackTrace();
}
}
};
listenerThread.setName("Smack Listener Processor (" + connection.connectionCounterValue + ")");
listenerThread.setDaemon(true);
});
resetParser();
}
@ -121,7 +120,7 @@ class PacketReader {
* @param packetFilter the packet filter to use.
*/
public void addPacketListener(PacketListener packetListener, PacketFilter packetFilter) {
ListenerWrapper wrapper = new ListenerWrapper(this, packetListener, packetFilter);
ListenerWrapper wrapper = new ListenerWrapper(packetListener, packetFilter);
listeners.put(packetListener, wrapper);
}
@ -131,10 +130,7 @@ class PacketReader {
* @param packetListener the packet listener to remove.
*/
public void removePacketListener(PacketListener packetListener) {
ListenerWrapper wrapper = listeners.remove(packetListener);
if (wrapper != null) {
wrapper.cancel();
}
listeners.remove(packetListener);
}
/**
@ -149,7 +145,6 @@ class PacketReader {
connectionSemaphore = new Semaphore(1);
readerThread.start();
listenerThread.start();
// Wait for stream tag before returing. We'll wait a couple of seconds before
// giving up and throwing an error.
try {
@ -192,10 +187,8 @@ class PacketReader {
}
done = true;
// Make sure that the listenerThread is awake to shutdown properly
synchronized (listenerThread) {
listenerThread.notifyAll();
}
// Shut down the listener executor.
listenerExecutor.shutdown();
}
/**
@ -230,11 +223,6 @@ class PacketReader {
e2.printStackTrace();
}
}
// Make sure that the listenerThread is awake to shutdown properly
synchronized (listenerThread) {
listenerThread.notifyAll();
}
}
/**
@ -242,11 +230,7 @@ class PacketReader {
*/
protected void notifyReconnection() {
// Notify connection listeners of the reconnection.
List<ConnectionListener> listenersCopy;
synchronized (connectionListeners) {
// Make a copy since it's possible that a listener will be removed from the list
listenersCopy = new ArrayList<ConnectionListener>(connectionListeners);
for (ConnectionListener listener : listenersCopy) {
for (ConnectionListener listener : connectionListeners) {
try {
listener.reconnectionSuccessful();
}
@ -258,12 +242,6 @@ class PacketReader {
}
}
// Make sure that the listenerThread is awake to shutdown properly
synchronized (listenerThread) {
listenerThread.notifyAll();
}
}
/**
* Resets the parser using the latest connection's reader. Reseting the parser is necessary
* when the plain connection has been secured or when a new opening stream element is going
@ -280,31 +258,6 @@ class PacketReader {
}
}
/**
* Process listeners.
*
* @param thread the thread that is being used by the reader to process incoming packets.
*/
private void processListeners(Thread thread) {
while (!done && thread == listenerThread) {
boolean processedPacket = false;
for (ListenerWrapper wrapper: listeners.values()) {
processedPacket = processedPacket || wrapper.notifyListener();
}
if (!processedPacket) {
try {
// Wait until more packets are ready to be processed.
synchronized (listenerThread) {
listenerThread.wait();
}
}
catch (InterruptedException ie) {
// Ignore.
}
}
}
}
/**
* Parse top-level packets in order to process them further.
*
@ -454,10 +407,8 @@ class PacketReader {
collector.processPacket(packet);
}
// Notify the listener thread that packets are waiting.
synchronized (listenerThread) {
listenerThread.notifyAll();
}
// Deliver the incoming packet to listeners.
listenerExecutor.submit(new ListenerNotification(packet));
}
private StreamError parseStreamError(XmlPullParser parser) throws IOException,
@ -809,7 +760,8 @@ class PacketReader {
}
private Bind parseResourceBinding(XmlPullParser parser) throws IOException,
XmlPullParserException {
XmlPullParserException
{
Bind bind = new Bind();
boolean done = false;
while (!done) {
@ -832,49 +784,40 @@ class PacketReader {
}
/**
* A wrapper class to associate a packet collector with a listener.
* A runnable to notify all listeners of a packet.
*/
private class ListenerNotification implements Runnable {
private Packet packet;
public ListenerNotification(Packet packet) {
this.packet = packet;
}
public void run() {
for (ListenerWrapper listenerWrapper : listeners.values()) {
listenerWrapper.notifyListener(packet);
}
}
}
/**
* A wrapper class to associate a packet filter with a listener.
*/
private static class ListenerWrapper {
private PacketListener packetListener;
private PacketCollector packetCollector;
private PacketFilter packetFilter;
public ListenerWrapper(PacketReader packetReader, PacketListener packetListener,
PacketFilter packetFilter)
{
public ListenerWrapper(PacketListener packetListener, PacketFilter packetFilter) {
this.packetListener = packetListener;
this.packetCollector = packetReader.createPacketCollector(packetFilter);
this.packetFilter = packetFilter;
}
public boolean equals(Object object) {
if (object == null) {
return false;
}
if (object instanceof ListenerWrapper) {
return ((ListenerWrapper)object).packetListener.equals(this.packetListener);
}
// If the packet listener is equal to the wrapped packet listener, return true.
else if (object instanceof PacketListener) {
return object.equals(this.packetListener);
}
return false;
}
public boolean notifyListener() {
Packet packet = packetCollector.pollResult();
if (packet != null) {
public void notifyListener(Packet packet) {
if (packetFilter == null || packetFilter.accept(packet)) {
packetListener.processPacket(packet);
return true;
}
else {
return false;
}
}
public void cancel() {
packetCollector.cancel();
packetCollector = null;
packetListener = null;
}
}
}
}

17
source/org/jivesoftware/smack/PacketWriter.java
View file

@ -354,26 +354,11 @@ class PacketWriter {
private PacketListener packetListener;
private PacketFilter packetFilter;
public ListenerWrapper(PacketListener packetListener,
PacketFilter packetFilter)
{
public ListenerWrapper(PacketListener packetListener, PacketFilter packetFilter) {
this.packetListener = packetListener;
this.packetFilter = packetFilter;
}
public boolean equals(Object object) {
if (object == null) {
return false;
}
if (object instanceof ListenerWrapper) {
return ((ListenerWrapper)object).packetListener.equals(this.packetListener);
}
else if (object instanceof PacketListener) {
return object.equals(this.packetListener);
}
return false;
}
public void notifyListener(Packet packet) {
if (packetFilter == null || packetFilter.accept(packet)) {
packetListener.processPacket(packet);

3
source/org/jivesoftware/smack/Roster.java
View file

@ -292,9 +292,6 @@ public class Roster {
else if (response.getType() == IQ.Type.ERROR) {
throw new XMPPException(response.getError());
}
else {
}
}
/**

5
source/org/jivesoftware/smack/XMPPConnection.java
View file

@ -631,6 +631,11 @@ public class XMPPConnection {
* @param unavailablePresence the presence packet to send during shutdown.
*/
public void disconnect(Presence unavailablePresence) {
// If not connected, ignore this request.
if (packetReader == null || packetWriter == null) {
return;
}
shutdown(unavailablePresence);
if (roster != null) {