Java tutorial
/* * 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.channel.ChannelHandler; import io.netty.channel.ChannelHandlerContext; import io.netty.channel.ChannelInboundHandlerAdapter; import org.traccar.BaseProtocolDecoder; import org.traccar.Context; import org.traccar.config.Config; import org.traccar.config.Keys; import org.traccar.model.Position; import java.util.Arrays; import java.util.HashSet; import java.util.Set; @ChannelHandler.Sharable public class TimeHandler extends ChannelInboundHandlerAdapter { private final boolean useServerTime; private final Set<String> protocols; public TimeHandler(Config config) { useServerTime = config.getString(Keys.TIME_OVERRIDE).equalsIgnoreCase("serverTime"); String protocolList = Context.getConfig().getString(Keys.TIME_PROTOCOLS); if (protocolList != null) { protocols = new HashSet<>(Arrays.asList(protocolList.split("[, ]"))); } else { protocols = null; } } @Override public void channelRead(ChannelHandlerContext ctx, Object msg) { if (msg instanceof Position && (protocols == null || protocols.contains(ctx.pipeline().get(BaseProtocolDecoder.class).getProtocolName()))) { Position position = (Position) msg; if (useServerTime) { position.setDeviceTime(position.getServerTime()); } position.setFixTime(position.getDeviceTime()); } ctx.fireChannelRead(msg); } }