diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java b/src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java new file mode 100644 index 000000000..ba47699c3 --- /dev/null +++ b/src/main/java/org/traccar/protocol/FreematicsProtocolDecoder.java @@ -0,0 +1,184 @@ +/* + * Copyright 2018 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 io.netty.channel.Channel; +import org.traccar.BaseProtocolDecoder; +import org.traccar.DeviceSession; +import org.traccar.NetworkMessage; +import org.traccar.Protocol; +import org.traccar.helper.Checksum; +import org.traccar.helper.DateBuilder; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.util.Date; +import java.util.LinkedList; +import java.util.List; + +public class FreematicsProtocolDecoder extends BaseProtocolDecoder { + + public FreematicsProtocolDecoder(Protocol protocol) { + super(protocol); + } + + private Object decodeEvent( + Channel channel, SocketAddress remoteAddress, String sentence) { + + DeviceSession deviceSession = null; + String event = null; + String time = null; + + for (String pair : sentence.split(",")) { + String[] data = pair.split("="); + String key = data[0]; + String value = data[1]; + switch (key) { + case "ID": + case "VIN": + if (deviceSession == null) { + deviceSession = getDeviceSession(channel, remoteAddress, value); + } + break; + case "EV": + event = value; + break; + case "TS": + time = value; + break; + default: + break; + } + } + + if (channel != null && deviceSession != null && event != null && time != null) { + String message = String.format("1#EV=%s,RX=1,TS=%s", event, time); + message += '*' + Checksum.sum(message); + channel.writeAndFlush(new NetworkMessage(message, remoteAddress)); + } + + return null; + } + + private Object decodePosition( + Channel channel, SocketAddress remoteAddress, String sentence) throws Exception { + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); + if (deviceSession == null) { + return null; + } + + List<Position> positions = new LinkedList<>(); + Position position = null; + DateBuilder dateBuilder = null; + + for (String pair : sentence.split(",")) { + String[] data = pair.split("[=:]"); + int key = Integer.parseInt(data[0], 16); + String value = data[1]; + switch (key) { + case 0x0: + if (position != null) { + position.setTime(dateBuilder.getDate()); + positions.add(position); + } + position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + position.setValid(true); + dateBuilder = new DateBuilder(new Date()); + break; + case 0x11: + value = ("000000" + value).substring(value.length()); + dateBuilder.setDateReverse( + Integer.parseInt(value.substring(0, 2)), + Integer.parseInt(value.substring(2, 4)), + Integer.parseInt(value.substring(4))); + break; + case 0x10: + value = ("00000000" + value).substring(value.length()); + dateBuilder.setTime( + Integer.parseInt(value.substring(0, 2)), + Integer.parseInt(value.substring(2, 4)), + Integer.parseInt(value.substring(4, 6)), + Integer.parseInt(value.substring(6)) * 10); + break; + case 0xA: + position.setLatitude(Double.parseDouble(value)); + break; + case 0xB: + position.setLongitude(Double.parseDouble(value)); + break; + case 0xC: + position.setAltitude(Double.parseDouble(value)); + break; + case 0xD: + position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(value))); + break; + case 0xE: + position.setCourse(Integer.parseInt(value)); + break; + case 0xF: + position.set(Position.KEY_SATELLITES, Integer.parseInt(value)); + break; + case 0x20: + position.set(Position.KEY_ACCELERATION, value); + break; + case 0x24: + position.set(Position.KEY_BATTERY, Integer.parseInt(value) * 0.01); + break; + case 0x81: + position.set(Position.KEY_RSSI, Integer.parseInt(value)); + break; + case 0x82: + position.set(Position.KEY_DEVICE_TEMP, Integer.parseInt(value) * 0.1); + break; + default: + position.set(data[0], value); + break; + } + } + + if (position != null) { + position.setTime(dateBuilder.getDate()); + positions.add(position); + } + + return positions; + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + String sentence = (String) msg; + int startIndex = sentence.indexOf('#'); + int endIndex = sentence.indexOf('*'); + + if (startIndex > 0 && endIndex > 0) { + sentence = sentence.substring(startIndex + 1, endIndex); + + if (sentence.startsWith("EV")) { + return decodeEvent(channel, remoteAddress, sentence); + } else { + return decodePosition(channel, remoteAddress, sentence); + } + } + + return null; + } + +} |