mirror of
https://codeberg.org/Mercury-IM/Smack
synced 2024-12-23 13:07:59 +01:00
SMACK-341 Updated collectors to use concurrent classes.
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@13452 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
parent
e0e92eca76
commit
d1e9d81769
4 changed files with 437 additions and 128 deletions
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@ -20,11 +20,12 @@
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package org.jivesoftware.smack;
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import java.util.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.TimeUnit;
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import org.jivesoftware.smack.filter.PacketFilter;
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import org.jivesoftware.smack.packet.Packet;
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import java.util.LinkedList;
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/**
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* Provides a mechanism to collect packets into a result queue that pass a
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* specified filter. The collector lets you perform blocking and polling
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@ -41,16 +42,9 @@ import java.util.LinkedList;
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*/
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public class PacketCollector {
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/**
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* Max number of packets that any one collector can hold. After the max is
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* reached, older packets will be automatically dropped from the queue as
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* new packets are added.
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*/
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private int maxPackets = SmackConfiguration.getPacketCollectorSize();
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private PacketFilter packetFilter;
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private LinkedList<Packet> resultQueue;
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private Connection conection;
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private ArrayBlockingQueue<Packet> resultQueue;
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private Connection connection;
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private boolean cancelled = false;
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/**
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@ -61,9 +55,7 @@ public class PacketCollector {
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* @param packetFilter determines which packets will be returned by this collector.
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*/
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protected PacketCollector(Connection conection, PacketFilter packetFilter) {
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this.conection = conection;
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this.packetFilter = packetFilter;
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this.resultQueue = new LinkedList<Packet>();
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this(conection, packetFilter, SmackConfiguration.getPacketCollectorSize());
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}
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/**
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@ -75,8 +67,9 @@ public class PacketCollector {
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* @param maxSize the maximum number of packets that will be stored in the collector.
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*/
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protected PacketCollector(Connection conection, PacketFilter packetFilter, int maxSize) {
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this(conection, packetFilter);
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maxPackets = maxSize;
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this.connection = conection;
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this.packetFilter = packetFilter;
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this.resultQueue = new ArrayBlockingQueue<Packet>(maxSize);
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}
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/**
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@ -88,7 +81,7 @@ public class PacketCollector {
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// If the packet collector has already been cancelled, do nothing.
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if (!cancelled) {
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cancelled = true;
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conection.removePacketCollector(this);
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connection.removePacketCollector(this);
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}
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}
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@ -110,13 +103,8 @@ public class PacketCollector {
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* @return the next packet result, or <tt>null</tt> if there are no more
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* results.
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*/
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public synchronized Packet pollResult() {
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if (resultQueue.isEmpty()) {
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return null;
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}
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else {
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return resultQueue.removeLast();
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}
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public Packet pollResult() {
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return resultQueue.poll();
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}
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/**
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@ -125,17 +113,13 @@ public class PacketCollector {
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*
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* @return the next available packet.
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*/
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public synchronized Packet nextResult() {
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// Wait indefinitely until there is a result to return.
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while (resultQueue.isEmpty()) {
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try {
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wait();
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}
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catch (InterruptedException ie) {
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// Ignore.
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}
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}
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return resultQueue.removeLast();
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public Packet nextResult() {
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try {
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return resultQueue.take();
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}
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catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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@ -146,40 +130,13 @@ public class PacketCollector {
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* @param timeout the amount of time to wait for the next packet (in milleseconds).
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* @return the next available packet.
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*/
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public synchronized Packet nextResult(long timeout) {
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// Wait up to the specified amount of time for a result.
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if (resultQueue.isEmpty()) {
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long waitTime = timeout;
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long start = System.currentTimeMillis();
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try {
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// Keep waiting until the specified amount of time has elapsed, or
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// a packet is available to return.
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while (resultQueue.isEmpty()) {
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if (waitTime <= 0) {
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break;
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}
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wait(waitTime);
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long now = System.currentTimeMillis();
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waitTime -= (now - start);
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start = now;
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}
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}
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catch (InterruptedException ie) {
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// Ignore.
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}
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// Still haven't found a result, so return null.
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if (resultQueue.isEmpty()) {
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return null;
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}
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// Return the packet that was found.
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else {
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return resultQueue.removeLast();
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}
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}
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// There's already a packet waiting, so return it.
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else {
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return resultQueue.removeLast();
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}
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public Packet nextResult(long timeout) {
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try {
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return resultQueue.poll(timeout, TimeUnit.MILLISECONDS);
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}
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catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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@ -188,19 +145,16 @@ public class PacketCollector {
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*
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* @param packet the packet to process.
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*/
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protected synchronized void processPacket(Packet packet) {
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protected void processPacket(Packet packet) {
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if (packet == null) {
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return;
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}
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if (packetFilter == null || packetFilter.accept(packet)) {
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// If the max number of packets has been reached, remove the oldest one.
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if (resultQueue.size() == maxPackets) {
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resultQueue.removeLast();
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}
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// Add the new packet.
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resultQueue.addFirst(packet);
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// Notify waiting threads a result is available.
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notifyAll();
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while (!resultQueue.offer(packet)) {
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// Since we know the queue is full, this poll should never actually block.
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resultQueue.poll();
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}
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}
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}
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}
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package org.jivesoftware.smackx.muc;
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import java.util.concurrent.ArrayBlockingQueue;
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import java.util.concurrent.TimeUnit;
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import org.jivesoftware.smack.SmackConfiguration;
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import org.jivesoftware.smack.packet.Packet;
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import java.util.LinkedList;
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/**
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* A variant of the {@link org.jivesoftware.smack.PacketCollector} class
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* that does not force attachment to a <code>Connection</code>
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@ -41,14 +42,14 @@ class ConnectionDetachedPacketCollector {
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*/
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private int maxPackets = SmackConfiguration.getPacketCollectorSize();
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private LinkedList<Packet> resultQueue;
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private ArrayBlockingQueue<Packet> resultQueue;
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/**
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* Creates a new packet collector. If the packet filter is <tt>null</tt>, then
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* all packets will match this collector.
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*/
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public ConnectionDetachedPacketCollector() {
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this.resultQueue = new LinkedList<Packet>();
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this(SmackConfiguration.getPacketCollectorSize());
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}
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/**
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* all packets will match this collector.
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*/
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public ConnectionDetachedPacketCollector(int maxSize) {
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this.resultQueue = new LinkedList<Packet>();
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maxPackets = maxSize;
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this.resultQueue = new ArrayBlockingQueue<Packet>(maxSize);
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}
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/**
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* @return the next packet result, or <tt>null</tt> if there are no more
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* results.
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*/
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public synchronized Packet pollResult() {
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if (resultQueue.isEmpty()) {
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return null;
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}
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else {
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return resultQueue.removeLast();
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}
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public Packet pollResult() {
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return resultQueue.poll();
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}
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/**
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*
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* @return the next available packet.
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*/
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public synchronized Packet nextResult() {
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// Wait indefinitely until there is a result to return.
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while (resultQueue.isEmpty()) {
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try {
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wait();
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}
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catch (InterruptedException ie) {
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// Ignore.
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}
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}
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return resultQueue.removeLast();
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public Packet nextResult() {
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try {
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return resultQueue.take();
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}
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catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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* @param timeout the amount of time to wait for the next packet (in milleseconds).
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* @return the next available packet.
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*/
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public synchronized Packet nextResult(long timeout) {
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// Wait up to the specified amount of time for a result.
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if (resultQueue.isEmpty()) {
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try {
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wait(timeout);
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}
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catch (InterruptedException ie) {
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// Ignore.
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}
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}
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// If still no result, return null.
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if (resultQueue.isEmpty()) {
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return null;
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}
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else {
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return resultQueue.removeLast();
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}
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public Packet nextResult(long timeout) {
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try {
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return resultQueue.poll(timeout, TimeUnit.MILLISECONDS);
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}
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catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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/**
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*
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* @param packet the packet to process.
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*/
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protected synchronized void processPacket(Packet packet) {
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protected void processPacket(Packet packet) {
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if (packet == null) {
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return;
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}
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// If the max number of packets has been reached, remove the oldest one.
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if (resultQueue.size() == maxPackets) {
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resultQueue.removeLast();
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}
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// Add the new packet.
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resultQueue.addFirst(packet);
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// Notify waiting threads a result is available.
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notifyAll();
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while (!resultQueue.offer(packet)) {
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// Since we know the queue is full, this poll should never actually block.
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resultQueue.poll();
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}
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}
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}
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198
test-unit/org/jivesoftware/smack/PacketCollectorTest.java
Normal file
198
test-unit/org/jivesoftware/smack/PacketCollectorTest.java
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package org.jivesoftware.smack;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNull;
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import org.jivesoftware.smack.filter.PacketFilter;
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import org.jivesoftware.smack.packet.Packet;
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import org.junit.Test;
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public class PacketCollectorTest
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{
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@Test
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public void verifyRollover()
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{
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TestPacketCollector collector = new TestPacketCollector(null, new OKEverything(), 5);
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for (int i=0; i<6; i++)
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{
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Packet testPacket = new TestPacket(i);
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collector.processPacket(testPacket);
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}
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// Assert that '0' has rolled off
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assertEquals("1", collector.nextResult().getPacketID());
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assertEquals("2", collector.nextResult().getPacketID());
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assertEquals("3", collector.nextResult().getPacketID());
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assertEquals("4", collector.nextResult().getPacketID());
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assertEquals("5", collector.pollResult().getPacketID());
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assertNull(collector.pollResult());
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for (int i=10; i<15; i++)
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{
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Packet testPacket = new TestPacket(i);
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collector.processPacket(testPacket);
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}
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assertEquals("10", collector.nextResult().getPacketID());
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assertEquals("11", collector.nextResult().getPacketID());
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assertEquals("12", collector.nextResult().getPacketID());
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assertEquals("13", collector.nextResult().getPacketID());
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assertEquals("14", collector.pollResult().getPacketID());
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assertNull(collector.pollResult());
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assertNull(collector.nextResult(1000));
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}
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/**
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* Although this doesn't guarentee anything due to the nature of threading, it can
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* potentially catch problems.
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*/
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@Test
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public void verifyThreadSafety()
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{
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int insertCount = 500;
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final TestPacketCollector collector = new TestPacketCollector(null, new OKEverything(), insertCount);
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Thread consumer1 = new Thread(new Runnable()
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{
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@Override
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public void run()
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{
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try
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{
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while (true)
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{
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try
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{
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Thread.sleep(3);
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}
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catch (InterruptedException e)
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{
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}
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Packet packet = collector.nextResult();
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// System.out.println(Thread.currentThread().getName() + " packet: " + packet);
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}
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}
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catch (RuntimeException re)
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{
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if (re.getCause() instanceof InterruptedException)
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{
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// System.out.println(Thread.currentThread().getName() + " has been interupted");
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}
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}
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}
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});
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consumer1.setName("consumer 1");
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Thread consumer2 = new Thread(new Runnable()
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{
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@Override
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public void run()
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{
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Packet p = null;
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do
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{
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try
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{
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Thread.sleep(3);
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}
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catch (InterruptedException e)
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{
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}
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p = collector.nextResult(1);
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// System.out.println(Thread.currentThread().getName() + " packet: " + p);
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}
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while (p != null);
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}
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});
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consumer2.setName("consumer 2");
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Thread consumer3 = new Thread(new Runnable()
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{
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@Override
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public void run()
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{
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Packet p = null;
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do
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{
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try
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{
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Thread.sleep(3);
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}
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catch (InterruptedException e)
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{
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}
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p = collector.pollResult();
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// System.out.println(Thread.currentThread().getName() + " packet: " + p);
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}
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while (p != null);
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}
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});
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consumer3.setName("consumer 3");
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consumer1.start();
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consumer2.start();
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consumer3.start();
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for(int i=0; i<insertCount; i++)
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{
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collector.processPacket(new TestPacket(i));
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}
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try
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{
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Thread.sleep(5000);
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consumer3.join();
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consumer2.join();
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consumer1.interrupt();
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}
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catch (InterruptedException e)
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{
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}
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//We cannot guarantee that this is going to pass due to the possible issue of timing between consumer 1
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// and main, but the probability is extremely remote.
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assertNull(collector.pollResult());
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}
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class OKEverything implements PacketFilter
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{
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@Override
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public boolean accept(Packet packet)
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{
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return true;
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}
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}
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class TestPacketCollector extends PacketCollector
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{
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protected TestPacketCollector(Connection conection, PacketFilter packetFilter, int size)
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{
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super(conection, packetFilter, size);
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}
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}
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class TestPacket extends Packet
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{
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public TestPacket(int i)
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{
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setPacketID(String.valueOf(i));
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}
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@Override
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public String toString()
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{
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return toXML();
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}
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@Override
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public String toXML()
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{
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return "<packetId>" + getPacketID() + "</packetId>";
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}
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}
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}
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@ -0,0 +1,179 @@
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package org.jivesoftware.smackx.muc;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNull;
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|
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import org.jivesoftware.smack.packet.Packet;
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import org.junit.Test;
|
||||
|
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public class ConnectionDetachedPacketCollectorTest
|
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{
|
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@Test
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public void verifyRollover()
|
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{
|
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ConnectionDetachedPacketCollector collector = new ConnectionDetachedPacketCollector(5);
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for (int i=0; i<6; i++)
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{
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Packet testPacket = new TestPacket(i);
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collector.processPacket(testPacket);
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}
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|
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// Assert that '0' has rolled off
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assertEquals("1", collector.nextResult().getPacketID());
|
||||
assertEquals("2", collector.nextResult().getPacketID());
|
||||
assertEquals("3", collector.nextResult().getPacketID());
|
||||
assertEquals("4", collector.nextResult().getPacketID());
|
||||
assertEquals("5", collector.pollResult().getPacketID());
|
||||
assertNull(collector.pollResult());
|
||||
|
||||
for (int i=10; i<15; i++)
|
||||
{
|
||||
Packet testPacket = new TestPacket(i);
|
||||
collector.processPacket(testPacket);
|
||||
}
|
||||
|
||||
assertEquals("10", collector.nextResult().getPacketID());
|
||||
assertEquals("11", collector.nextResult().getPacketID());
|
||||
assertEquals("12", collector.nextResult().getPacketID());
|
||||
assertEquals("13", collector.nextResult().getPacketID());
|
||||
assertEquals("14", collector.pollResult().getPacketID());
|
||||
assertNull(collector.pollResult());
|
||||
|
||||
assertNull(collector.nextResult(1000));
|
||||
}
|
||||
|
||||
/**
|
||||
* Although this doesn't guarentee anything due to the nature of threading, it can
|
||||
* potentially catch problems.
|
||||
*/
|
||||
@Test
|
||||
public void verifyThreadSafety()
|
||||
{
|
||||
int insertCount = 500;
|
||||
final ConnectionDetachedPacketCollector collector = new ConnectionDetachedPacketCollector(insertCount);
|
||||
|
||||
Thread consumer1 = new Thread(new Runnable()
|
||||
{
|
||||
@Override
|
||||
public void run()
|
||||
{
|
||||
try
|
||||
{
|
||||
while (true)
|
||||
{
|
||||
try
|
||||
{
|
||||
Thread.sleep(3);
|
||||
}
|
||||
catch (InterruptedException e)
|
||||
{
|
||||
}
|
||||
Packet packet = collector.nextResult();
|
||||
// System.out.println(Thread.currentThread().getName() + " packet: " + packet);
|
||||
}
|
||||
}
|
||||
catch (RuntimeException re)
|
||||
{
|
||||
if (re.getCause() instanceof InterruptedException)
|
||||
{
|
||||
// System.out.println(Thread.currentThread().getName() + " has been interupted");
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
consumer1.setName("consumer 1");
|
||||
|
||||
Thread consumer2 = new Thread(new Runnable()
|
||||
{
|
||||
@Override
|
||||
public void run()
|
||||
{
|
||||
Packet p = null;
|
||||
|
||||
do
|
||||
{
|
||||
try
|
||||
{
|
||||
Thread.sleep(3);
|
||||
}
|
||||
catch (InterruptedException e)
|
||||
{
|
||||
}
|
||||
p = collector.nextResult(1);
|
||||
// System.out.println(Thread.currentThread().getName() + " packet: " + p);
|
||||
}
|
||||
while (p != null);
|
||||
}
|
||||
});
|
||||
consumer2.setName("consumer 2");
|
||||
|
||||
Thread consumer3 = new Thread(new Runnable()
|
||||
{
|
||||
@Override
|
||||
public void run()
|
||||
{
|
||||
Packet p = null;
|
||||
|
||||
do
|
||||
{
|
||||
try
|
||||
{
|
||||
Thread.sleep(3);
|
||||
}
|
||||
catch (InterruptedException e)
|
||||
{
|
||||
}
|
||||
p = collector.pollResult();
|
||||
// System.out.println(Thread.currentThread().getName() + " packet: " + p);
|
||||
}
|
||||
while (p != null);
|
||||
}
|
||||
});
|
||||
consumer3.setName("consumer 3");
|
||||
|
||||
consumer1.start();
|
||||
consumer2.start();
|
||||
consumer3.start();
|
||||
|
||||
for(int i=0; i<insertCount; i++)
|
||||
{
|
||||
collector.processPacket(new TestPacket(i));
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
Thread.sleep(5000);
|
||||
consumer3.join();
|
||||
consumer2.join();
|
||||
consumer1.interrupt();
|
||||
}
|
||||
catch (InterruptedException e)
|
||||
{
|
||||
}
|
||||
//We cannot guarantee that this is going to pass due to the possible issue of timing between consumer 1
|
||||
// and main, but the probability is extremely remote.
|
||||
assertNull(collector.pollResult());
|
||||
}
|
||||
|
||||
class TestPacket extends Packet
|
||||
{
|
||||
public TestPacket(int i)
|
||||
{
|
||||
setPacketID(String.valueOf(i));
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toString()
|
||||
{
|
||||
return toXML();
|
||||
}
|
||||
|
||||
@Override
|
||||
public String toXML()
|
||||
{
|
||||
return "<packetId>" + getPacketID() + "</packetId>";
|
||||
}
|
||||
}
|
||||
}
|
Loading…
Reference in a new issue