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/*
* Copyright 2012 - 2015 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.net.SocketAddress;
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.traccar.BaseProtocolDecoder;
import org.traccar.Context;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Event;
import org.traccar.model.Position;
public class Gl200ProtocolDecoder extends BaseProtocolDecoder {
public Gl200ProtocolDecoder(Gl200Protocol protocol) {
super(protocol);
}
private static final Pattern heartbeatPattern = Pattern.compile(
"\\+ACK:GTHBD," +
"([0-9A-Z]{2}\\p{XDigit}{4})," +
".*," +
"(\\p{XDigit}{4})\\$?");
private static final Pattern pattern = Pattern.compile(
"(?:(?:\\+(?:RESP|BUFF):)|" +
"(?:\\x00?\\x04,\\p{XDigit}{4},[01],))" +
"GT...," +
"(?:[0-9A-Z]{2}\\p{XDigit}{4})?," + // Protocol version
"([^,]+)," + // IMEI
"(?:[0-9A-Z]{17}," + // VIN
"[^,]{0,20}," + // Device name
"[01]," + // Report type
"\\p{XDigit}{1,8}," + // Report mask
"[0-9A-Z]{17}," + // VIN
"[01]," + // ODB connect
"\\d{1,5}," + // ODB voltage
"\\p{XDigit}{8}," + // Support PIDs
"(\\d{1,5})," + // Engine RPM
"(\\d{1,3})," + // Speed
"(-?\\d{1,3})," + // Coolant temp
"(\\d+\\.?\\d*|Inf|NaN)?," + // Fuel consumption
"(\\d{1,5})," + // DTCs cleared distance
"\\d{1,5}," +
"([01])," + // ODB connect
"(\\d{1,3})," + // Number of DTCs
"(\\p{XDigit}*)," + // DTCs
"(\\d{1,3})," + // Throttle
"\\d{1,3}," + // Engine load
"(\\d{1,3})?,"+ // Fuel level
"(\\d+)|.*)," + // Odometer
"(\\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}|\\p{XDigit}{8})?," + // LAC
"(\\p{XDigit}{4})?," + // Cell
"(?:(\\d+\\.\\d)?," + // Odometer
"(\\d{1,3})?,)?" + // Battery
".*," +
"(\\p{XDigit}{4})\\$?");
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
String sentence = (String) msg;
// Handle heartbeat
Matcher parser = heartbeatPattern.matcher(sentence);
if (parser.matches()) {
if (channel != null) {
channel.write("+SACK:GTHBD," + parser.group(1) + "," + parser.group(2) + "$", remoteAddress);
}
return null;
}
// Parse message
parser = pattern.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
position.setProtocol(getProtocolName());
Integer index = 1;
// Get device by IMEI
if (!identify(parser.group(index++), channel, remoteAddress)) {
return null;
}
position.setDeviceId(getDeviceId());
// OBD
position.set(Event.KEY_RPM, parser.group(index++));
position.set(Event.KEY_SPEED, parser.group(index++));
position.set(Event.PREFIX_TEMP + 1, parser.group(index++));
position.set("fuel-consumption", parser.group(index++));
position.set("dtcs-cleared-distance", parser.group(index++));
position.set("odb-connect", parser.group(index++));
position.set("dtcs-number", parser.group(index++));
position.set("dtcs-codes", parser.group(index++));
position.set("throttle-position", parser.group(index++));
position.set(Event.KEY_FUEL, parser.group(index++));
position.set("odb-odometer", parser.group(index++));
// Validity
position.setValid(Integer.valueOf(parser.group(index++)) < 20);
// Speed
String speed = parser.group(index++);
if (speed != null) {
position.setSpeed(UnitsConverter.knotsFromKph(Double.valueOf(speed)));
}
// Course
String course = parser.group(index++);
if (speed != null) {
position.setCourse(Double.valueOf(course));
}
// Altitude
String altitude = parser.group(index++);
if (altitude != null) {
position.setAltitude(Double.valueOf(altitude));
}
// 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
position.set(Event.KEY_MCC, parser.group(index++));
position.set(Event.KEY_MNC, parser.group(index++));
position.set(Event.KEY_LAC, parser.group(index++));
position.set(Event.KEY_CELL, parser.group(index++));
// Other
String odometer = parser.group(index++);
if (odometer != null && Double.valueOf(odometer) != 0) {
position.set(Event.KEY_ODOMETER, odometer);
}
position.set(Event.KEY_BATTERY, parser.group(index++));
if (Context.getConfig().getBoolean(getProtocolName() + ".ack") && channel != null) {
channel.write("+SACK:" + parser.group(index++) + "$", remoteAddress);
}
return position;
}
}
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