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/*
* Copyright 2012 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.GenericProtocolDecoder;
import org.traccar.model.DataManager;
import org.traccar.model.Position;
/**
* AVL-08 tracker protocol decoder
*/
public class Avl08ProtocolDecoder extends GenericProtocolDecoder {
/**
* Initialize
*/
public Avl08ProtocolDecoder(DataManager dataManager, Integer resetDelay) {
super(dataManager, resetDelay);
}
/**
* Regular expressions pattern
*/
static private Pattern pattern = Pattern.compile(
"\\$\\$.{2}" + // Length
"(\\d{15})\\|" + // IMEI
"(.{2})" + // Alarm Type
"\\$GPRMC," +
"(\\d{2})(\\d{2})(\\d{2}).(\\d{3})," + // Time (HHMMSS.SSS)
"([AV])," + // Validity
"(\\d{2})(\\d{2}.\\d{4})," + // Latitude (DDMM.MMMM)
"([NS])," +
"(\\d{3})(\\d{2}.\\d{4})," + // Longitude (DDDMM.MMMM)
"([EW])," +
"(\\d+.\\d{2})?," + // Speed
"(\\d+.\\d{2})?," + // Course
"(\\d{2})(\\d{2})(\\d{2}),[^\\|]*\\|" + // Date (DDMMYY)
"(\\d+.\\d)\\|(\\d+.\\d)\\|(\\d+.\\d)\\|" + // Dilution of precision
"(\\d{12})\\|" + // Status
"(\\d{14})\\|" + // Clock
"(\\d{8})\\|" + // Voltage
"(\\d{8})\\|" + // ADC
"(.{8})\\|" + // Cell
"(.\\d{3})\\|" + // Temperature
"(\\d+.\\d{4})\\|" + // Mileage
"(\\d{4})\\|" + // Serial
"(.{10})?\\|?" + // RFID
".+"); // TODO: Use non-capturing group
/**
* Decode message
*/
protected Object decode(
ChannelHandlerContext ctx, Channel channel, Object msg)
throws Exception {
// Parse message
String sentence = (String) msg;
Matcher parser = pattern.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
String extendedInfo = "<protocol>avl08</protocol>";
Integer index = 1;
// Get device by IMEI
String imei = parser.group(index++);
position.setDeviceId(getDataManager().getDeviceByImei(imei).getId());
// Alarm type
extendedInfo += "<alarm>" + parser.group(index++) + "</alarm>";
// Time
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
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++)));
time.set(Calendar.MILLISECOND, Integer.valueOf(parser.group(index++)));
// Validity
position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false);
// Latitude
Double latitude = Double.valueOf(parser.group(index++));
latitude += Double.valueOf(parser.group(index++)) / 60;
if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
position.setLatitude(latitude);
// Longitude
Double lonlitude = Double.valueOf(parser.group(index++));
lonlitude += Double.valueOf(parser.group(index++)) / 60;
if (parser.group(index++).compareTo("W") == 0) lonlitude = -lonlitude;
position.setLongitude(lonlitude);
// Altitude
position.setAltitude(0.0);
// Speed
position.setSpeed(Double.valueOf(parser.group(index++)));
// Course
String course = parser.group(index++);
if (course != null) {
position.setCourse(Double.valueOf(course));
} else {
position.setCourse(0.0);
}
// Date
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++)));
position.setTime(time.getTime());
// Dilution of precision
extendedInfo += "<pdop>" + parser.group(index++).replaceFirst ("^0*(?![\\.$])", "") + "</pdop>";
extendedInfo += "<hdop>" + parser.group(index++).replaceFirst ("^0*(?![\\.$])", "") + "</hdop>";
extendedInfo += "<vdop>" + parser.group(index++).replaceFirst ("^0*(?![\\.$])", "") + "</vdop>";
// Status
extendedInfo += "<status>" + parser.group(index++) + "</status>";
// Real time clock
extendedInfo += "<clock>" + parser.group(index++) + "</clock>";
// Voltage
String voltage = parser.group(index++);
position.setPower(Double.valueOf(voltage.substring(1, 4)) / 100);
extendedInfo += "<voltage>" + voltage + "</voltage>";
// ADC
extendedInfo += "<adc>" + parser.group(index++) + "</adc>";
// Cell
extendedInfo += "<cell>" + parser.group(index++) + "</cell>";
// Temperature
extendedInfo += "<temperature>" + parser.group(index++) + "</temperature>";
// Mileage
extendedInfo += "<mileage>" + parser.group(index++) + "</mileage>";
// Serial
extendedInfo += "<serial>" + parser.group(index++).replaceFirst ("^0*", "") + "</serial>";
// RFID
String rfid = parser.group(index++);
if (rfid != null) {
extendedInfo += "<rfid>" + rfid + "</rfid>";
}
// Extended info
position.setExtendedInfo(extendedInfo);
return position;
}
}
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