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/*
* Copyright 2012 - 2013 Anton Tananaev (anton.tananaev@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.database.DataManager;
import org.traccar.helper.Log;
import org.traccar.model.ExtendedInfoFormatter;
import org.traccar.model.Position;
public class Gl200ProtocolDecoder extends BaseProtocolDecoder {
public Gl200ProtocolDecoder(DataManager dataManager) {
super(dataManager);
}
public Gl200ProtocolDecoder(ServerManager serverManager, String protocol) {
super(serverManager, protocol);
}
private static final Pattern pattern = Pattern.compile(
"\\+(?:RESP|BUFF):GT...," +
"[0-9a-fA-F]{6}," + // Protocol version
"(\\d{15}),.*," + // IMEI
"(\\d*)," + // GPS accuracy
"(\\d+.\\d)?," + // Speed
"(\\d+)?," + // Course
"(-?\\d+\\.\\d)?," + // Altitude
"(-?\\d+\\.\\d+)," + // Longitude
"(-?\\d+\\.\\d+)," + // Latitude
"(\\d{4})(\\d{2})(\\d{2})" + // Date (YYYYMMDD)
"(\\d{2})(\\d{2})(\\d{2})," + // Time (HHMMSS)
"(\\d{4})?," + // MCC
"(\\d{4})?," + // MNC
"(\\p{XDigit}{4})?," + // LAC
"(\\p{XDigit}{4})?," + // Cell
"(?:.*,(\\d{1,3}),\\d{14},)?" + // Battery
".*");
@Override
protected Object decode(
ChannelHandlerContext ctx, Channel channel, Object msg)
throws Exception {
String sentence = (String) msg;
// Parse message
Matcher parser = pattern.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
Integer index = 1;
// Get device by IMEI
String imei = parser.group(index++);
try {
position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
} catch(Exception error) {
Log.warning("Unknown device - " + imei);
return null;
}
// Validity
position.setValid(Integer.valueOf(parser.group(index++)) < 20);
// Speed
String speed = parser.group(index++);
if (speed != null) {
position.setSpeed(Double.valueOf(speed));
} else {
position.setSpeed(0.0);
}
// Course
String course = parser.group(index++);
if (speed != null) {
position.setCourse(Double.valueOf(course));
} else {
position.setCourse(0.0);
}
// Altitude
String altitude = parser.group(index++);
if (speed != null) {
position.setAltitude(Double.valueOf(altitude));
} else {
position.setAltitude(0.0);
}
// Coordinates
position.setLongitude(Double.valueOf(parser.group(index++)));
position.setLatitude(Double.valueOf(parser.group(index++)));
// Date
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.YEAR, Integer.valueOf(parser.group(index++)));
time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
// Time
time.set(Calendar.HOUR_OF_DAY, 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());
// Cell information
extendedInfo.set("mcc", parser.group(index++));
extendedInfo.set("mnc", parser.group(index++));
extendedInfo.set("lac", parser.group(index++));
extendedInfo.set("cell", parser.group(index++));
// Battery
String battery = parser.group(index++);
if (battery != null) {
extendedInfo.set("battery", Integer.valueOf(battery));
}
position.setExtendedInfo(extendedInfo.toString());
return position;
}
}
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