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/*
* Copyright 2012 - 2024 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.network;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.socket.DatagramChannel;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.timeout.IdleStateEvent;
import jakarta.inject.Inject;
import jakarta.inject.Singleton;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.BasePipelineFactory;
import org.traccar.BaseProtocolDecoder;
import org.traccar.config.Config;
import org.traccar.config.Keys;
import org.traccar.helper.NetworkUtil;
import org.traccar.session.ConnectionManager;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
@Singleton
@ChannelHandler.Sharable
public class MainEventHandler extends ChannelInboundHandlerAdapter {
private static final Logger LOGGER = LoggerFactory.getLogger(MainEventHandler.class);
private final ConnectionManager connectionManager;
private final Set<String> connectionlessProtocols = new HashSet<>();
@Inject
public MainEventHandler(Config config, ConnectionManager connectionManager) {
this.connectionManager = connectionManager;
String connectionlessProtocolList = config.getString(Keys.STATUS_IGNORE_OFFLINE);
if (connectionlessProtocolList != null) {
connectionlessProtocols.addAll(Arrays.asList(connectionlessProtocolList.split("[, ]")));
}
}
@Override
public void channelActive(ChannelHandlerContext ctx) {
if (!(ctx.channel() instanceof DatagramChannel)) {
LOGGER.info("[{}] connected", NetworkUtil.session(ctx.channel()));
}
}
@Override
public void channelInactive(ChannelHandlerContext ctx) {
LOGGER.info("[{}] disconnected", NetworkUtil.session(ctx.channel()));
closeChannel(ctx.channel());
boolean supportsOffline = BasePipelineFactory.getHandler(ctx.pipeline(), HttpRequestDecoder.class) == null
&& !connectionlessProtocols.contains(ctx.pipeline().get(BaseProtocolDecoder.class).getProtocolName());
connectionManager.deviceDisconnected(ctx.channel(), supportsOffline);
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
while (cause.getCause() != null && cause.getCause() != cause) {
cause = cause.getCause();
}
LOGGER.info("[{}] error", NetworkUtil.session(ctx.channel()), cause);
closeChannel(ctx.channel());
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) {
if (evt instanceof IdleStateEvent) {
LOGGER.info("[{}] timed out", NetworkUtil.session(ctx.channel()));
closeChannel(ctx.channel());
}
}
private void closeChannel(Channel channel) {
if (!(channel instanceof DatagramChannel)) {
channel.close();
}
}
}
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