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authorAnton Tananaev <anton.tananaev@gmail.com>2011-11-18 13:48:09 +0000
committerAnton Tananaev <anton.tananaev@gmail.com>2011-11-18 13:48:09 +0000
commit8b6816289e5c7a4db1cb7ddda5e49e4ace050fa1 (patch)
tree12a69c8f0791d1333aa220e1a2cce02901dd72e3 /src/org/traccar/protocol/gl100/Gl100ProtocolDecoder.java
parent91a8d2558644293758c93d2c1df21487cd387993 (diff)
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diff --git a/src/org/traccar/protocol/gl100/Gl100ProtocolDecoder.java b/src/org/traccar/protocol/gl100/Gl100ProtocolDecoder.java
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+/*
+ * 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 org.traccar.protocol.gl100;
+
+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 org.traccar.Position;
+import org.traccar.DataManager;
+import org.jboss.netty.channel.ChannelEvent;
+import org.jboss.netty.channel.ChannelState;
+import org.jboss.netty.channel.ChannelStateEvent;
+
+/**
+ * GL200 tracker protocol decoder
+ */
+public class Gl100ProtocolDecoder extends OneToOneDecoder {
+
+ /**
+ * Data manager
+ */
+ private DataManager dataManager;
+
+ /**
+ * Reset connection delay
+ */
+ private Integer resetDelay;
+
+ /**
+ * Init device table
+ */
+ public Gl100ProtocolDecoder(DataManager dataManager, Integer resetDelay) {
+ this.dataManager = dataManager;
+ this.resetDelay = resetDelay;
+ }
+
+ /**
+ * Regular expressions pattern
+ */
+ static private Pattern pattern = Pattern.compile(
+ "\\+RESP:GT...," +
+ "(\\d{15})," + // IMEI
+ "(?:(?:\\d+," + // Number
+ "\\d," + // Reserved / Geofence id
+ "\\d)|" + // Reserved / Geofence alert
+ "(?:[^,]*))," + // Calling number
+ "([01])," + // GPS fix
+ "(\\d+.\\d)," + // Speed
+ "(\\d+)," + // Course
+ "(-?\\d+.\\d)," + // Altitude
+ "\\d*," + // GPS accuracy
+ "(-?\\d+.\\d+)," + // Longitude
+ "(-?\\d+.\\d+)," + // Latitude
+ "(\\d{4})(\\d{2})(\\d{2})" + // Date (YYYYMMDD)
+ "(\\d{2})(\\d{2})(\\d{2})," + // Time (HHMMSS)
+ ".*");
+
+ /**
+ * Decode message
+ */
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ String sentence = (String) msg;
+
+ // Parse message
+ Matcher parser = pattern.matcher(sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ // Create new position
+ Position position = new Position();
+
+ Integer index = 1;
+
+ // Get device by IMEI
+ String imei = parser.group(index++);
+ position.setDeviceId(dataManager.getDeviceByImei(imei).getId());
+
+ // Validity
+ position.setValid(Integer.valueOf(parser.group(index++)) == 0 ? false : true);
+
+ // Position info
+ position.setSpeed(Double.valueOf(parser.group(index++)));
+ position.setCourse(Double.valueOf(parser.group(index++)));
+ position.setAltitude(Double.valueOf(parser.group(index++)));
+ position.setLongitude(Double.valueOf(parser.group(index++)));
+ position.setLatitude(Double.valueOf(parser.group(index++)));
+
+ // Date
+ Calendar time = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
+ time.clear();
+ time.set(Calendar.YEAR, Integer.valueOf(parser.group(index++)));
+ time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
+ time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
+
+ // Time
+ 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++)));
+ position.setTime(time.getTime());
+
+ return position;
+ }
+
+ /**
+ * 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);
+ }
+ }
+ }
+
+}