/*
* JBoss, Home of Professional Open Source
*
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* by the @author tags. See the COPYRIGHT.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.netty.channel.group;
import java.net.SocketAddress;
import java.util.AbstractSet;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicInteger;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelFuture;
import org.jboss.netty.channel.ChannelFutureListener;
import org.jboss.netty.channel.ServerChannel;
import org.jboss.netty.util.internal.CombinedIterator;
import org.jboss.netty.util.internal.ConcurrentHashMap;
/**
* The default {@link ChannelGroup} implementation.
*
* @author The Netty Project (netty-dev@lists.jboss.org)
* @author Trustin Lee (tlee@redhat.com)
* @version $Rev: 1243 $, $Date: 2009-04-23 18:36:25 +0900 (Thu, 23 Apr 2009) $
*
* @apiviz.landmark
*/
public class DefaultChannelGroup extends AbstractSet<Channel> implements ChannelGroup {
private static final AtomicInteger nextId = new AtomicInteger();
private final String name;
private final ConcurrentMap<Integer, Channel> serverChannels = new ConcurrentHashMap<Integer, Channel>();
private final ConcurrentMap<Integer, Channel> nonServerChannels = new ConcurrentHashMap<Integer, Channel>();
private final ChannelFutureListener remover = new ChannelFutureListener() {
public void operationComplete(ChannelFuture future) throws Exception {
remove(future.getChannel());
}
};
/**
* Creates a new group with a generated name.
*/
public DefaultChannelGroup() {
this("group-0x" + Integer.toHexString(nextId.incrementAndGet()));
}
/**
* Creates a new group with the specified {@code name}. Please note that
* different groups can have the same name, which means no duplicate check
* is done against group names.
*/
public DefaultChannelGroup(String name) {
if (name == null) {
throw new NullPointerException("name");
}
this.name = name;
}
public String getName() {
return name;
}
@Override
public boolean isEmpty() {
return nonServerChannels.isEmpty() && serverChannels.isEmpty();
}
@Override
public int size() {
return nonServerChannels.size() + serverChannels.size();
}
public Channel find(Integer id) {
Channel c = nonServerChannels.get(id);
if (c != null) {
return c;
} else {
return serverChannels.get(id);
}
}
@Override
public boolean contains(Object o) {
if (o instanceof Integer) {
return nonServerChannels.containsKey(o) || serverChannels.containsKey(o);
} else if (o instanceof Channel) {
Channel c = (Channel) o;
if (o instanceof ServerChannel) {
return serverChannels.containsKey(c.getId());
} else {
return nonServerChannels.containsKey(c.getId());
}
} else {
return false;
}
}
@Override
public boolean add(Channel channel) {
ConcurrentMap<Integer, Channel> map =
channel instanceof ServerChannel? serverChannels : nonServerChannels;
boolean added = map.putIfAbsent(channel.getId(), channel) == null;
if (added) {
channel.getCloseFuture().addListener(remover);
}
return added;
}
@Override
public boolean remove(Object o) {
Channel c = null;
if (o instanceof Integer) {
c = nonServerChannels.remove(o);
if (c == null) {
c = serverChannels.remove(o);
}
} else if (o instanceof Channel) {
c = (Channel) o;
if (c instanceof ServerChannel) {
c = serverChannels.remove(c.getId());
} else {
c = nonServerChannels.remove(c.getId());
}
}
if (c == null) {
return false;
}
c.getCloseFuture().removeListener(remover);
return true;
}
@Override
public void clear() {
nonServerChannels.clear();
serverChannels.clear();
}
@Override
public Iterator<Channel> iterator() {
return new CombinedIterator<Channel>(
serverChannels.values().iterator(),
nonServerChannels.values().iterator());
}
@Override
public Object[] toArray() {
Collection<Channel> channels = new ArrayList<Channel>(size());
channels.addAll(serverChannels.values());
channels.addAll(nonServerChannels.values());
return channels.toArray();
}
@Override
public <T> T[] toArray(T[] a) {
Collection<Channel> channels = new ArrayList<Channel>(size());
channels.addAll(serverChannels.values());
channels.addAll(nonServerChannels.values());
return channels.toArray(a);
}
public ChannelGroupFuture close() {
Map<Integer, ChannelFuture> futures =
new HashMap<Integer, ChannelFuture>(size());
for (Channel c: serverChannels.values()) {
futures.put(c.getId(), c.close().awaitUninterruptibly());
}
for (Channel c: nonServerChannels.values()) {
futures.put(c.getId(), c.close());
}
return new DefaultChannelGroupFuture(this, futures);
}
public ChannelGroupFuture disconnect() {
Map<Integer, ChannelFuture> futures =
new HashMap<Integer, ChannelFuture>(size());
for (Channel c: serverChannels.values()) {
futures.put(c.getId(), c.disconnect().awaitUninterruptibly());
}
for (Channel c: nonServerChannels.values()) {
futures.put(c.getId(), c.disconnect());
}
return new DefaultChannelGroupFuture(this, futures);
}
public ChannelGroupFuture setInterestOps(int interestOps) {
Map<Integer, ChannelFuture> futures =
new HashMap<Integer, ChannelFuture>(size());
for (Channel c: serverChannels.values()) {
futures.put(c.getId(), c.setInterestOps(interestOps).awaitUninterruptibly());
}
for (Channel c: nonServerChannels.values()) {
futures.put(c.getId(), c.setInterestOps(interestOps));
}
return new DefaultChannelGroupFuture(this, futures);
}
public ChannelGroupFuture setReadable(boolean readable) {
Map<Integer, ChannelFuture> futures =
new HashMap<Integer, ChannelFuture>(size());
for (Channel c: serverChannels.values()) {
futures.put(c.getId(), c.setReadable(readable).awaitUninterruptibly());
}
for (Channel c: nonServerChannels.values()) {
futures.put(c.getId(), c.setReadable(readable));
}
return new DefaultChannelGroupFuture(this, futures);
}
public ChannelGroupFuture unbind() {
Map<Integer, ChannelFuture> futures =
new HashMap<Integer, ChannelFuture>(size());
for (Channel c: serverChannels.values()) {
futures.put(c.getId(), c.unbind().awaitUninterruptibly());
}
for (Channel c: nonServerChannels.values()) {
futures.put(c.getId(), c.unbind());
}
return new DefaultChannelGroupFuture(this, futures);
}
public ChannelGroupFuture write(Object message) {
Map<Integer, ChannelFuture> futures =
new HashMap<Integer, ChannelFuture>(size());
if (message instanceof ChannelBuffer) {
ChannelBuffer buf = (ChannelBuffer) message;
for (Channel c: this) {
futures.put(c.getId(), c.write(buf.duplicate()));
}
} else {
for (Channel c: this) {
futures.put(c.getId(), c.write(message));
}
}
return new DefaultChannelGroupFuture(this, futures);
}
public ChannelGroupFuture write(Object message, SocketAddress remoteAddress) {
Map<Integer, ChannelFuture> futures =
new HashMap<Integer, ChannelFuture>(size());
if (message instanceof ChannelBuffer) {
ChannelBuffer buf = (ChannelBuffer) message;
for (Channel c: this) {
futures.put(c.getId(), c.write(buf.duplicate(), remoteAddress));
}
} else {
for (Channel c: this) {
futures.put(c.getId(), c.write(message, remoteAddress));
}
}
return new DefaultChannelGroupFuture(this, futures);
}
@Override
public int hashCode() {
return System.identityHashCode(this);
}
@Override
public boolean equals(Object o) {
return this == o;
}
public int compareTo(ChannelGroup o) {
int v = getName().compareTo(o.getName());
if (v != 0) {
return v;
}
return System.identityHashCode(this) - System.identityHashCode(o);
}
@Override
public String toString() {
return getClass().getSimpleName() +
"(name: " + getName() + ", size: " + size() + ')';
}
}