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/*
* Copyright 2012 - 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;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelInboundHandler;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOutboundHandler;
import io.netty.channel.ChannelPipeline;
import io.netty.handler.timeout.IdleStateHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.config.Keys;
import org.traccar.handler.DefaultDataHandler;
import org.traccar.handler.SpeedLimitHandler;
import org.traccar.handler.TimeHandler;
import org.traccar.handler.events.AlertEventHandler;
import org.traccar.handler.events.CommandResultEventHandler;
import org.traccar.handler.events.DriverEventHandler;
import org.traccar.handler.events.FuelDropEventHandler;
import org.traccar.handler.events.GeofenceEventHandler;
import org.traccar.handler.events.IgnitionEventHandler;
import org.traccar.handler.events.MaintenanceEventHandler;
import org.traccar.handler.events.MotionEventHandler;
import org.traccar.handler.events.OverspeedEventHandler;
import org.traccar.handler.ComputedAttributesHandler;
import org.traccar.handler.CopyAttributesHandler;
import org.traccar.handler.DistanceHandler;
import org.traccar.handler.EngineHoursHandler;
import org.traccar.handler.FilterHandler;
import org.traccar.handler.GeocoderHandler;
import org.traccar.handler.GeolocationHandler;
import org.traccar.handler.HemisphereHandler;
import org.traccar.handler.MotionHandler;
import org.traccar.handler.NetworkMessageHandler;
import org.traccar.handler.OpenChannelHandler;
import org.traccar.handler.RemoteAddressHandler;
import org.traccar.handler.StandardLoggingHandler;
import java.util.Map;
public abstract class BasePipelineFactory extends ChannelInitializer<Channel> {
private static final Logger LOGGER = LoggerFactory.getLogger(BasePipelineFactory.class);
private final TrackerServer server;
private final String protocol;
private final boolean eventsEnabled;
private int timeout;
public BasePipelineFactory(TrackerServer server, String protocol) {
this.server = server;
this.protocol = protocol;
eventsEnabled = Context.getConfig().getBoolean(Keys.EVENT_ENABLE);
timeout = Context.getConfig().getInteger(Keys.PROTOCOL_TIMEOUT.withPrefix(protocol));
if (timeout == 0) {
timeout = Context.getConfig().getInteger(Keys.SERVER_TIMEOUT);
}
}
protected abstract void addProtocolHandlers(PipelineBuilder pipeline);
@SafeVarargs
private final void addHandlers(ChannelPipeline pipeline, Class<? extends ChannelHandler>... handlerClasses) {
for (Class<? extends ChannelHandler> handlerClass : handlerClasses) {
if (handlerClass != null) {
pipeline.addLast(Main.getInjector().getInstance(handlerClass));
}
}
}
public static <T extends ChannelHandler> T getHandler(ChannelPipeline pipeline, Class<T> clazz) {
for (Map.Entry<String, ChannelHandler> handlerEntry : pipeline) {
ChannelHandler handler = handlerEntry.getValue();
if (handler instanceof WrapperInboundHandler) {
handler = ((WrapperInboundHandler) handler).getWrappedHandler();
} else if (handler instanceof WrapperOutboundHandler) {
handler = ((WrapperOutboundHandler) handler).getWrappedHandler();
}
if (clazz.isAssignableFrom(handler.getClass())) {
return (T) handler;
}
}
return null;
}
@Override
protected void initChannel(Channel channel) {
final ChannelPipeline pipeline = channel.pipeline();
if (timeout > 0 && !server.isDatagram()) {
pipeline.addLast(new IdleStateHandler(timeout, 0, 0));
}
pipeline.addLast(new OpenChannelHandler(server));
pipeline.addLast(new NetworkMessageHandler());
pipeline.addLast(new StandardLoggingHandler(protocol));
addProtocolHandlers(handler -> {
if (!(handler instanceof BaseProtocolDecoder || handler instanceof BaseProtocolEncoder)) {
if (handler instanceof ChannelInboundHandler) {
handler = new WrapperInboundHandler((ChannelInboundHandler) handler);
} else {
handler = new WrapperOutboundHandler((ChannelOutboundHandler) handler);
}
}
pipeline.addLast(handler);
});
addHandlers(
pipeline,
TimeHandler.class,
GeolocationHandler.class,
HemisphereHandler.class,
DistanceHandler.class,
RemoteAddressHandler.class);
addDynamicHandlers(pipeline);
addHandlers(
pipeline,
FilterHandler.class,
GeocoderHandler.class,
SpeedLimitHandler.class,
MotionHandler.class,
CopyAttributesHandler.class,
EngineHoursHandler.class,
ComputedAttributesHandler.class,
WebDataHandler.class,
DefaultDataHandler.class);
if (eventsEnabled) {
addHandlers(
pipeline,
CommandResultEventHandler.class,
OverspeedEventHandler.class,
FuelDropEventHandler.class,
MotionEventHandler.class,
GeofenceEventHandler.class,
AlertEventHandler.class,
IgnitionEventHandler.class,
MaintenanceEventHandler.class,
DriverEventHandler.class);
}
pipeline.addLast(new MainEventHandler());
}
private void addDynamicHandlers(ChannelPipeline pipeline) {
String handlers = Context.getConfig().getString(Keys.EXTRA_HANDLERS);
if (handlers != null) {
for (String handler : handlers.split(",")) {
try {
pipeline.addLast((ChannelHandler) Class.forName(handler).getDeclaredConstructor().newInstance());
} catch (ReflectiveOperationException error) {
LOGGER.warn("Dynamic handler error", error);
}
}
}
}
}
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