/* * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com) * Luis Parada (luis.parada@gmail.com) * * 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.protocol; import java.util.Calendar; import java.util.TimeZone; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.jboss.netty.channel.Channel; import org.jboss.netty.channel.ChannelHandlerContext; import org.traccar.BaseProtocolDecoder; import org.traccar.ServerManager; import org.traccar.helper.Log; import org.traccar.model.Position; /** * Ev603 Protocol Decoder */ public class Ev603ProtocolDecoder extends BaseProtocolDecoder{ /** * Device ID */ private Long deviceId; /** * Initialize */ public Ev603ProtocolDecoder(ServerManager serverManager) { super(serverManager); } /** * Regular expressions pattern */ static private Pattern pattern = Pattern.compile( "!A," + // Type "(\\d{2})\\/(\\d{2})\\/(\\d{2})," + // Date dd/mm/YY "(\\d{2}):(\\d{2}):(\\d{2})," + // Time hh:mm:ss "(-?\\d+\\.\\d+)," + // Latitude (DDMM.MMMM) "(-?\\d+\\.\\d+)," + // Longitude (DDDMM.MMMM) "(\\d+\\.\\d+)," + // Speed "(\\d+\\.?\\d+)," + // Course ".*"); /** * Decode message */ protected Object decode( ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception { String sentence = (String) msg; // Detect device ID if (sentence.startsWith("!1,")) { String imei = sentence.substring(3); try { deviceId = getDataManager().getDeviceByImei(imei).getId(); } catch(Exception error) { Log.warning("Unknown device - " + imei); return null; } } else if (sentence.startsWith("!A,")) { // Parse message Matcher parser = pattern.matcher(sentence); if (!parser.matches()) { return null; } // Create new position Position position = new Position(); position.setDeviceId(deviceId); StringBuilder extendedInfo = new StringBuilder("<protocol>ev603</protocol>"); Integer index = 1; // Date Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); time.clear(); time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++))); time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1); time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++))); // Time time.set(Calendar.HOUR, Integer.valueOf(parser.group(index++))); time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++))); time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++))); position.setTime(time.getTime()); // Validity position.setValid(true); // Coordinates position.setLatitude(Double.valueOf(parser.group(index++))); position.setLongitude(Double.valueOf(parser.group(index++))); // Altitude position.setAltitude(0.0); // Speed position.setSpeed(Double.valueOf(parser.group(index++))); // Course position.setCourse(Double.valueOf(parser.group(index++))); // Extended info position.setExtendedInfo(extendedInfo.toString()); return position; } return null; } }