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/*
* Copyright 2019 Anton Tananaev (anton@traccar.org)
*
* 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 org.traccar.handler;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPromise;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.NetworkMessage;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
public class StandardLoggingHandler extends ChannelDuplexHandler {
private static final Logger LOGGER = LoggerFactory.getLogger(StandardLoggingHandler.class);
private final String protocol;
public StandardLoggingHandler(String protocol) {
this.protocol = protocol;
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
log(ctx, false, msg);
super.channelRead(ctx, msg);
}
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
log(ctx, true, msg);
super.write(ctx, msg, promise);
}
public void log(ChannelHandlerContext ctx, boolean downstream, Object o) {
if (o instanceof NetworkMessage) {
NetworkMessage networkMessage = (NetworkMessage) o;
if (networkMessage.getMessage() instanceof ByteBuf) {
log(ctx, downstream, networkMessage.getRemoteAddress(), (ByteBuf) networkMessage.getMessage());
}
} else if (o instanceof ByteBuf) {
log(ctx, downstream, ctx.channel().remoteAddress(), (ByteBuf) o);
}
}
public void log(ChannelHandlerContext ctx, boolean downstream, SocketAddress remoteAddress, ByteBuf buf) {
StringBuilder message = new StringBuilder();
message.append("[").append(ctx.channel().id().asShortText()).append(": ");
message.append(protocol);
if (downstream) {
message.append(" > ");
} else {
message.append(" < ");
}
if (remoteAddress instanceof InetSocketAddress) {
message.append(((InetSocketAddress) remoteAddress).getHostString());
} else {
message.append("unknown");
}
message.append("]");
message.append(" HEX: ");
message.append(ByteBufUtil.hexDump(buf));
LOGGER.info(message.toString());
}
}
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