Implement Alematics protocol

3 files changed, 242 insertions, 0 deletions

diff --git a/src/org/traccar/protocol/AlematicsFrameDecoder.java b/src/org/traccar/protocol/AlematicsFrameDecoder.java
new file mode 100644
index 000000000..b8b3e3403
--- /dev/null
+++ b/src/org/traccar/protocol/AlematicsFrameDecoder.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2017 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.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.frame.LineBasedFrameDecoder;
+
+public class AlematicsFrameDecoder extends LineBasedFrameDecoder {
+
+    private static final int MESSAGE_MINIMUM_LENGTH = 2;
+
+    public AlematicsFrameDecoder(int maxFrameLength) {
+        super(maxFrameLength);
+    }
+
+    // example of heartbeat: FA F8 00 07 00 03 15 AD 4E 78 3A D2
+
+    @Override
+    protected Object decode(ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception {
+
+        if (buf.readableBytes() < MESSAGE_MINIMUM_LENGTH) {
+            return null;
+        }
+
+        if (buf.getUnsignedShort(buf.readerIndex()) == 0xFAF8) {
+            ChannelBuffer heartbeat = buf.readBytes(12);
+            if (channel != null) {
+                channel.write(heartbeat);
+            }
+        }
+
+        return super.decode(ctx, channel, buf);
+    }
+
+}
diff --git a/src/org/traccar/protocol/AlematicsProtocol.java b/src/org/traccar/protocol/AlematicsProtocol.java
new file mode 100644
index 000000000..241ce8bf9
--- /dev/null
+++ b/src/org/traccar/protocol/AlematicsProtocol.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2017 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.bootstrap.ServerBootstrap;
+import org.jboss.netty.channel.ChannelPipeline;
+import org.jboss.netty.handler.codec.string.StringDecoder;
+import org.jboss.netty.handler.codec.string.StringEncoder;
+import org.traccar.BaseProtocol;
+import org.traccar.TrackerServer;
+
+import java.util.List;
+
+public class AlematicsProtocol extends BaseProtocol {
+
+    public AlematicsProtocol() {
+        super("alematics");
+    }
+
+    @Override
+    public void initTrackerServers(List<TrackerServer> serverList) {
+        serverList.add(new TrackerServer(new ServerBootstrap(), getName()) {
+            @Override
+            protected void addSpecificHandlers(ChannelPipeline pipeline) {
+                pipeline.addLast("frameDecoder", new AlematicsFrameDecoder(1024));
+                pipeline.addLast("stringEncoder", new StringEncoder());
+                pipeline.addLast("stringDecoder", new StringDecoder());
+                pipeline.addLast("objectDecoder", new AlematicsProtocolDecoder(AlematicsProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/org/traccar/protocol/AlematicsProtocolDecoder.java b/src/org/traccar/protocol/AlematicsProtocolDecoder.java
new file mode 100644
index 000000000..47d31b7a7
--- /dev/null
+++ b/src/org/traccar/protocol/AlematicsProtocolDecoder.java
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2017 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.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.helper.BitUtil;
+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.util.regex.Pattern;
+
+public class AlematicsProtocolDecoder extends BaseProtocolDecoder {
+
+    public AlematicsProtocolDecoder(AlematicsProtocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("$T,")
+            .number("(d+),")                     // type
+            .number("(d+),")                     // index
+            .number("(d+),")                     // id
+            .number("(dddd)(dd)(dd)")            // gps date
+            .number("(dd)(dd)(dd),")             // gps time
+            .number("(dddd)(dd)(dd)")            // device date
+            .number("(dd)(dd)(dd),")             // device time
+            .number("(-?d+.d+),")                // latitude
+            .number("(-?d+.d+),")                // longitude
+            .number("(d+),")                     // speed
+            .number("(d+),")                     // course
+            .number("(-?d+),")                   // altitude
+            .number("(d+.d),")                   // hdop
+            .number("(d+),")                     // satellites
+            .number("(d+),")                     // input
+            .number("(d+),")                     // output
+            .number("(d+.d+),")                  // adc
+            .number("(d+.d+),")                  // power
+            .number("(d+),")                     // odometer
+            .number("(d+),")                     // extra mask
+            .expression("(.*)")                  // extra data
+            .compile();
+
+    private void decodeExtras(Position position, Parser parser) {
+
+        int mask = parser.nextInt();
+        String[] data = parser.next().split(",");
+
+        int index = 0;
+
+        if (BitUtil.check(mask, 0)) {
+            index++; // pulse counter 3
+        }
+
+        if (BitUtil.check(mask, 1)) {
+            position.set(Position.KEY_POWER, Integer.parseInt(data[index++]));
+        }
+
+        if (BitUtil.check(mask, 2)) {
+            position.set(Position.KEY_BATTERY, Integer.parseInt(data[index++]));
+        }
+
+        if (BitUtil.check(mask, 3)) {
+            position.set(Position.KEY_OBD_SPEED, Integer.parseInt(data[index++]));
+        }
+
+        if (BitUtil.check(mask, 4)) {
+            position.set(Position.KEY_RPM, Integer.parseInt(data[index++]));
+        }
+
+        if (BitUtil.check(mask, 5)) {
+            position.set(Position.KEY_RSSI, Integer.parseInt(data[index++]));
+        }
+
+        if (BitUtil.check(mask, 6)) {
+            index++; // pulse counter 2
+        }
+
+        if (BitUtil.check(mask, 7)) {
+            index++; // magnetic rotation sensor rpm
+        }
+
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        Parser parser = new Parser(PATTERN, (String) msg);
+        if (!parser.matches()) {
+            return null;
+        }
+
+        Position position = new Position();
+        position.setProtocol(getProtocolName());
+
+        position.set(Position.KEY_TYPE, parser.nextInt());
+        position.set(Position.KEY_INDEX, parser.nextInt());
+
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
+        if (deviceSession == null) {
+            return null;
+        }
+        position.setDeviceId(deviceSession.getDeviceId());
+
+        position.setFixTime(parser.nextDateTime());
+        position.setDeviceTime(parser.nextDateTime());
+
+        position.setValid(true);
+        position.setLatitude(parser.nextDouble(0));
+        position.setLongitude(parser.nextDouble(0));
+        position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt(0)));
+        position.setCourse(parser.nextInt(0));
+        position.setAltitude(parser.nextInt(0));
+
+        position.set(Position.KEY_HDOP, parser.nextDouble());
+        position.set(Position.KEY_SATELLITES, parser.nextInt());
+        position.set(Position.KEY_INPUT, parser.nextInt());
+        position.set(Position.KEY_OUTPUT, parser.nextInt());
+        position.set(Position.PREFIX_ADC + 1, parser.nextDouble());
+        position.set(Position.KEY_POWER, parser.nextDouble());
+        position.set(Position.KEY_ODOMETER, parser.nextInt());
+
+        decodeExtras(position, parser);
+
+        return position;
+    }
+
+}