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Reworked Interceptor and InterceptorWrapper

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Allows interceptor to remove themselves in the interceptPacket() method.

Same change for Interceptors as was done in
15d59299a2 for (send|recv)Listeners.
This commit is contained in:
Florian Schmaus 2014-10-10 12:22:23 +02:00
parent c3528d082e
commit 36da216b4a
1 changed files with 23 additions and 39 deletions
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62
smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java
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@ -25,7 +25,6 @@ import java.util.LinkedList;
import java.util.List; import java.util.List;
import java.util.Map; import java.util.Map;
import java.util.Set; import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentLinkedQueue; import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.CopyOnWriteArraySet; import java.util.concurrent.CopyOnWriteArraySet;
import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.ScheduledExecutorService;
@ -129,8 +128,8 @@ public abstract class AbstractXMPPConnection implements XMPPConnection {
* sent to the server. These interceptors may modify the packet before it is being * sent to the server. These interceptors may modify the packet before it is being
* actually sent to the server. * actually sent to the server.
*/ */
protected final Map<PacketInterceptor, InterceptorWrapper> interceptors = private final Map<PacketInterceptor, InterceptorWrapper> interceptors =
new ConcurrentHashMap<PacketInterceptor, InterceptorWrapper>(); new HashMap<PacketInterceptor, InterceptorWrapper>();
protected final Lock connectionLock = new ReentrantLock(); protected final Lock connectionLock = new ReentrantLock();
@ -732,21 +731,17 @@ public abstract class AbstractXMPPConnection implements XMPPConnection {
if (packetInterceptor == null) { if (packetInterceptor == null) {
throw new NullPointerException("Packet interceptor is null."); throw new NullPointerException("Packet interceptor is null.");
} }
interceptors.put(packetInterceptor, new InterceptorWrapper(packetInterceptor, packetFilter)); InterceptorWrapper interceptorWrapper = new InterceptorWrapper(packetInterceptor, packetFilter);
synchronized (interceptors) {
interceptors.put(packetInterceptor, interceptorWrapper);
}
} }
@Override @Override
public void removePacketInterceptor(PacketInterceptor packetInterceptor) { public void removePacketInterceptor(PacketInterceptor packetInterceptor) {
interceptors.remove(packetInterceptor); synchronized (interceptors) {
} interceptors.remove(packetInterceptor);
}
/**
* Get a map of all packet interceptors for sending packets of this connection.
*
* @return a map of all packet interceptors for sending packets.
*/
protected Map<PacketInterceptor, InterceptorWrapper> getPacketInterceptors() {
return interceptors;
} }
/** /**
@ -758,11 +753,17 @@ public abstract class AbstractXMPPConnection implements XMPPConnection {
* @param packet the packet that is going to be sent to the server * @param packet the packet that is going to be sent to the server
*/ */
private void firePacketInterceptors(Packet packet) { private void firePacketInterceptors(Packet packet) {
if (packet != null) { List<PacketInterceptor> interceptorsToInvoke = new LinkedList<PacketInterceptor>();
synchronized (interceptors) {
for (InterceptorWrapper interceptorWrapper : interceptors.values()) { for (InterceptorWrapper interceptorWrapper : interceptors.values()) {
interceptorWrapper.notifyListener(packet); if (interceptorWrapper.filterMatches(packet)) {
interceptorsToInvoke.add(interceptorWrapper.getInterceptor());
}
} }
} }
for (PacketInterceptor interceptor : interceptorsToInvoke) {
interceptor.interceptPacket(packet);
}
} }
/** /**
@ -956,8 +957,8 @@ public abstract class AbstractXMPPConnection implements XMPPConnection {
*/ */
protected static class InterceptorWrapper { protected static class InterceptorWrapper {
private PacketInterceptor packetInterceptor; private final PacketInterceptor packetInterceptor;
private PacketFilter packetFilter; private final PacketFilter packetFilter;
/** /**
* Create a class which associates a packet filter with an interceptor. * Create a class which associates a packet filter with an interceptor.
@ -970,29 +971,12 @@ public abstract class AbstractXMPPConnection implements XMPPConnection {
this.packetFilter = packetFilter; this.packetFilter = packetFilter;
} }
public boolean equals(Object object) { public boolean filterMatches(Packet packet) {
if (object == null) { return packetFilter == null || packetFilter.accept(packet);
return false;
}
if (object instanceof InterceptorWrapper) {
return ((InterceptorWrapper) object).packetInterceptor
.equals(this.packetInterceptor);
}
else if (object instanceof PacketInterceptor) {
return object.equals(this.packetInterceptor);
}
return false;
} }
/** public PacketInterceptor getInterceptor() {
* Notify and process the packet interceptor if the filter matches the packet. return packetInterceptor;
*
* @param packet the packet which will be sent.
*/
public void notifyListener(Packet packet) {
if (packetFilter == null || packetFilter.accept(packet)) {
packetInterceptor.interceptPacket(packet);
}
} }
} }