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/*
* Copyright 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 org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.model.Event;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.Date;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class GpsmtaProtocolDecoder extends BaseProtocolDecoder {
public GpsmtaProtocolDecoder(GpsmtaProtocol protocol) {
super(protocol);
}
private static final Pattern pattern = Pattern.compile(
"(\\d+) " + // UID
"(\\d+) " + // Time
"(\\d+\\.\\d+) " + // Latitude
"(\\d+\\.\\d+) " + // Longitude
"(\\d+) " + // Speed
"(\\d+) " + // Course
"(\\d+) " + // Accuracy
"(\\d+) " + // Altitude
"(\\d+) " + // Flags
"(\\d+) " + // Battery
"(\\d+) " + // Temperature
"(\\d).*"); // Changing status
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg)
throws Exception {
String sentence = (String) msg;
Matcher parser = pattern.matcher(sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
Integer index = 1;
if (!identify(parser.group(index++), channel, remoteAddress)) {
return null;
}
position.setDeviceId(getDeviceId());
String time = parser.group(index++);
position.setTime(new Date(Long.parseLong(time) * 1000));
position.setLatitude(Double.parseDouble(parser.group(index++)));
position.setLongitude(Double.parseDouble(parser.group(index++)));
position.setSpeed(Integer.parseInt(parser.group(index++)));
position.setCourse(Integer.parseInt(parser.group(index++)));
index++; // accuracy
position.setAltitude(Integer.parseInt(parser.group(index++)));
position.set(Event.KEY_STATUS, Integer.parseInt(parser.group(index++)));
position.set(Event.KEY_BATTERY, Integer.parseInt(parser.group(index++)));
position.set(Event.PREFIX_TEMP + 1, Integer.parseInt(parser.group(index++)));
position.set(Event.KEY_CHARGE, Integer.parseInt(parser.group(index++)) == 1);
if (channel != null) {
channel.write(time, remoteAddress);
}
return position;
}
}
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