/*
* Copyright 2013 - 2015 Anton Tananaev (anton@traccar.org)
*
* 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.buffer.ChannelBuffer;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.regex.Pattern;
public class WondexProtocolDecoder extends BaseProtocolDecoder {
public WondexProtocolDecoder(WondexProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.number("[^d]*") // deader
.number("(d+),") // device identifier
.number("(dddd)(dd)(dd)") // date (yyyymmdd)
.number("(dd)(dd)(dd),") // time (hhmmss)
.number("(-?d+.d+),") // longitude
.number("(-?d+.d+),") // latitude
.number("(d+),") // speed
.number("(d+),") // course
.number("(-?d+.?d*),") // altitude
.number("(d+),") // satellites
.number("(d+),?") // event
.number("(d+.d+)V,").optional() // battery
.number("(d+.d+)?,?") // odometer
.number("(d+)?,?") // input
.number("(d+.d+)?,?") // adc1
.number("(d+.d+)?,?") // adc2
.number("(d+)?") // output
.any()
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
if (buf.getUnsignedByte(0) == 0xD0) {
long deviceId = ((Long.reverseBytes(buf.getLong(0))) >> 32) & 0xFFFFFFFFL;
getDeviceSession(channel, remoteAddress, String.valueOf(deviceId));
return null;
} else if (buf.toString(StandardCharsets.US_ASCII).startsWith("$OK:")
|| buf.toString(StandardCharsets.US_ASCII).startsWith("$ERR:")) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, new Date());
position.setValid(false);
position.set(Position.KEY_RESULT, buf.toString(StandardCharsets.US_ASCII));
return position;
} else {
Parser parser = new Parser(PATTERN, buf.toString(StandardCharsets.US_ASCII));
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
position.setTime(parser.nextDateTime());
position.setLongitude(parser.nextDouble(0));
position.setLatitude(parser.nextDouble(0));
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0)));
position.setCourse(parser.nextDouble(0));
position.setAltitude(parser.nextDouble(0));
int satellites = parser.nextInt(0);
position.setValid(satellites >= 3);
position.set(Position.KEY_SATELLITES, satellites);
position.set(Position.KEY_EVENT, parser.next());
position.set(Position.KEY_BATTERY, parser.nextDouble());
if (parser.hasNext()) {
position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000);
}
position.set(Position.KEY_INPUT, parser.next());
position.set(Position.PREFIX_ADC + 1, parser.next());
position.set(Position.PREFIX_ADC + 2, parser.next());
position.set(Position.KEY_OUTPUT, parser.next());
return position;
}
}
}