/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.channel.local;
import io.netty.channel.Channel;
import io.netty.channel.ChannelException;
import io.netty.util.internal.PlatformDependent;
import java.net.SocketAddress;
import java.util.concurrent.ConcurrentMap;
final class LocalChannelRegistry {
private static final ConcurrentMap<LocalAddress, Channel> boundChannels = PlatformDependent.newConcurrentHashMap();
static LocalAddress register(
Channel channel, LocalAddress oldLocalAddress, SocketAddress localAddress) {
if (oldLocalAddress != null) {
throw new ChannelException("already bound");
}
if (!(localAddress instanceof LocalAddress)) {
throw new ChannelException(
"unsupported address type: " + localAddress.getClass().getSimpleName());
}
LocalAddress addr = (LocalAddress) localAddress;
if (LocalAddress.ANY.equals(addr)) {
addr = new LocalAddress(channel);
}
Channel boundChannel = boundChannels.putIfAbsent(addr, channel);
if (boundChannel != null) {
throw new ChannelException("address already in use by: " + boundChannel);
}
return addr;
}
static Channel get(SocketAddress localAddress) {
return boundChannels.get(localAddress);
}
static void unregister(LocalAddress localAddress) {
boundChannels.remove(localAddress);
}
private LocalChannelRegistry() {
// Unused
}
}