aboutsummaryrefslogtreecommitdiff
path: root/src/org/traccar/protocol/t55
diff options
context:
space:
mode:
authorAnton Tananaev <anton.tananaev@gmail.com>2011-11-11 13:46:52 +0000
committerAnton Tananaev <anton.tananaev@gmail.com>2011-11-11 13:46:52 +0000
commite7c57a86e55868e3563e023a6dc70e7848c55d20 (patch)
tree61cb0d82671cb68c18bc34be32467548de8b36cf /src/org/traccar/protocol/t55
parenta88479f670fea8f6c7f5fdf13c7dffa67772d854 (diff)
downloadtrackermap-server-e7c57a86e55868e3563e023a6dc70e7848c55d20.tar.gz
trackermap-server-e7c57a86e55868e3563e023a6dc70e7848c55d20.tar.bz2
trackermap-server-e7c57a86e55868e3563e023a6dc70e7848c55d20.zip
Diffstat (limited to 'src/org/traccar/protocol/t55')
-rw-r--r--src/org/traccar/protocol/t55/T55ProtocolDecoder.java200
1 files changed, 200 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/t55/T55ProtocolDecoder.java b/src/org/traccar/protocol/t55/T55ProtocolDecoder.java
new file mode 100644
index 000000000..01954b474
--- /dev/null
+++ b/src/org/traccar/protocol/t55/T55ProtocolDecoder.java
@@ -0,0 +1,200 @@
+/*
+ * Copyright 2010 Anton Tananaev (anton@tananaev.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 net.sourceforge.opentracking.protocol.t55;
+
+import java.util.Calendar;
+import java.util.GregorianCalendar;
+import java.util.TimeZone;
+import java.util.Timer;
+import java.util.TimerTask;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.oneone.OneToOneDecoder;
+import net.sourceforge.opentracking.Position;
+import net.sourceforge.opentracking.DataManager;
+import org.jboss.netty.channel.ChannelEvent;
+import org.jboss.netty.channel.ChannelState;
+import org.jboss.netty.channel.ChannelStateEvent;
+
+/**
+ * Gps 103 tracker protocol decoder
+ */
+public class T55ProtocolDecoder extends OneToOneDecoder {
+
+ /**
+ * Data manager
+ */
+ private DataManager dataManager;
+
+ /**
+ * Reset connection delay
+ */
+ private Integer resetDelay;
+
+ /**
+ * Device ID
+ */
+ private Long deviceId;
+
+ /**
+ * Init device table
+ */
+ public T55ProtocolDecoder(DataManager dataManager, Integer resetDelay) {
+ this.dataManager = dataManager;
+ this.resetDelay = resetDelay;
+ }
+
+ /**
+ * Regular expressions pattern
+ */
+ static private Pattern pattern = Pattern.compile(
+ "\\$GPRMC," +
+ "(\\d{2})(\\d{2})(\\d{2}).(\\d{3})," + // Time (HHMMSS.SSS)
+ "([AV])," + // Validity
+ "(\\d{2})(\\d{2}.\\d{4})," + // Latitude (DDMM.MMMM)
+ "([NS])," +
+ "(\\d{3})(\\d{2}.\\d{4})," + // Longitude (DDDMM.MMMM)
+ "([EW])," +
+ "(\\d+.\\d{2})?," + // Speed
+ "(\\d+.\\d{2})?," + // Course
+ "(\\d{2})(\\d{2})(\\d{2})" + // Date (DDMMYY)
+ ".+"); // Other (Checksumm)
+
+ /**
+ * Decode message
+ */
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ String sentence = (String) msg;
+
+ //System.out.println(sentence);
+
+ // Detect device ID
+ if (sentence.contains("$PGID")) {
+ String imei = sentence.substring(6, 6 + 15);
+ deviceId = dataManager.getDeviceByImei(imei).getId();
+ }
+
+ // Parse message
+ else if (sentence.contains("$GPRMC") && deviceId != null) {
+
+ // Send response
+ if (channel != null) {
+ channel.write("OK1\r\n");
+ }
+
+ // Parse message
+ Matcher parser = pattern.matcher(sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ // Create new position
+ Position position = new Position();
+ position.setDeviceId(deviceId);
+
+ Integer index = 1;
+
+ // Time
+ Calendar time = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.HOUR, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
+ index += 1; // Skip milliseconds
+ position.setTime(time.getTime());
+
+ // Validity
+ position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false);
+
+ // Latitude
+ Double latitude = Double.valueOf(parser.group(index++));
+ latitude += Double.valueOf(parser.group(index++)) / 60;
+ if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
+ position.setLatitude(latitude);
+
+ // Longitude
+ Double lonlitude = Double.valueOf(parser.group(index++));
+ lonlitude += Double.valueOf(parser.group(index++)) / 60;
+ if (parser.group(index++).compareTo("W") == 0) lonlitude = -lonlitude;
+ position.setLongitude(lonlitude);
+
+ // Speed
+ String speed = parser.group(index++);
+ if (speed != null) {
+ position.setSpeed(Double.valueOf(speed));
+ } else {
+ position.setSpeed(0.0);
+ }
+
+ // Course
+ String course = parser.group(index++);
+ if (course != null) {
+ position.setCourse(Double.valueOf(course));
+ } else {
+ position.setCourse(0.0);
+ }
+
+ // Date
+ time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
+ time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
+
+ // Altitude
+ position.setAltitude(0.0);
+
+ return position;
+ }
+
+ return null;
+ }
+
+ /**
+ * Disconnect channel
+ */
+ class DisconnectTask extends TimerTask {
+ private Channel channel;
+
+ public DisconnectTask(Channel channel) {
+ this.channel = channel;
+ }
+
+ public void run() {
+ channel.disconnect();
+ }
+ }
+
+ /**
+ * Handle connect event
+ */
+ @Override
+ public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent evt) throws Exception {
+ super.handleUpstream(ctx, evt);
+
+ if (evt instanceof ChannelStateEvent) {
+ ChannelStateEvent event = (ChannelStateEvent) evt;
+
+ if (event.getState() == ChannelState.CONNECTED && event.getValue() != null && resetDelay != 0) {
+ new Timer().schedule(new DisconnectTask(evt.getChannel()), resetDelay);
+ }
+ }
+ }
+
+}