/**
* Copyright 2012 Nikita Koksharov
*
* Licensed 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 com.corundumstudio.socketio.handler;
import io.netty.buffer.ByteBuf;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.ChannelHandler.Sharable;
import io.netty.channel.ChannelHandlerContext;
import io.netty.util.CharsetUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.corundumstudio.socketio.messages.PacketsMessage;
import com.corundumstudio.socketio.namespace.Namespace;
import com.corundumstudio.socketio.namespace.NamespacesHub;
import com.corundumstudio.socketio.parser.Decoder;
import com.corundumstudio.socketio.parser.Packet;
import com.corundumstudio.socketio.transport.MainBaseClient;
import com.corundumstudio.socketio.transport.NamespaceClient;
@Sharable
public class PacketHandler extends SimpleChannelInboundHandler<PacketsMessage> {
private final Logger log = LoggerFactory.getLogger(getClass());
private final PacketListener packetListener;
private final Decoder decoder;
private final NamespacesHub namespacesHub;
public PacketHandler(PacketListener packetListener, Decoder decoder, NamespacesHub namespacesHub) {
super();
this.packetListener = packetListener;
this.decoder = decoder;
this.namespacesHub = namespacesHub;
}
@Override
protected void channelRead0(io.netty.channel.ChannelHandlerContext ctx, PacketsMessage message)
throws Exception {
ByteBuf content = message.getContent();
MainBaseClient client = message.getClient();
if (log.isTraceEnabled()) {
log.trace("In message: {} sessionId: {}", content.toString(CharsetUtil.UTF_8), client.getSessionId());
}
while (content.isReadable()) {
try {
Packet packet = decoder.decodePackets(content, client.getSessionId());
Namespace ns = namespacesHub.get(packet.getEndpoint());
if (ns == null) {
log.warn("Can't find namespace for endpoint: {} probably it was removed.", packet.getEndpoint());
return;
}
NamespaceClient nClient = (NamespaceClient) client.getChildClient(ns);
packetListener.onPacket(packet, nClient);
} catch (Exception ex) {
String c = content.toString(CharsetUtil.UTF_8);
log.error("Error during data processing. Client sessionId: " + client.getSessionId() + ", data: " + c, ex);
return;
}
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable e) throws Exception {
log.error("Exception occurs", e);
}
}