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/*
* Copyright 2012 - 2016 Anton Tananaev (anton.tananaev@gmail.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;
import org.jboss.netty.channel.Channel;
import org.traccar.helper.Log;
import org.traccar.model.Device;
import org.traccar.model.Position;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.Date;
public abstract class BaseProtocolDecoder extends ExtendedObjectDecoder {
private final Protocol protocol;
public String getProtocolName() {
return protocol.getName();
}
private long deviceId;
public boolean hasDeviceId() {
return deviceId != 0;
}
public long getDeviceId() {
return deviceId;
}
public boolean identify(String uniqueId, Channel channel, SocketAddress remoteAddress, boolean logWarning) {
try {
Device device = Context.getIdentityManager().getDeviceByUniqueId(uniqueId);
if (device != null) {
deviceId = device.getId();
if (Context.getConnectionManager() != null) {
Context.getConnectionManager().addActiveDevice(deviceId, protocol, channel, remoteAddress);
}
return true;
} else {
deviceId = 0;
if (logWarning) {
String message = "Unknown device - " + uniqueId;
if (remoteAddress != null) {
message += " (" + ((InetSocketAddress) remoteAddress).getHostString() + ")";
}
Log.warning(message);
}
return false;
}
} catch (Exception error) {
deviceId = 0;
Log.warning(error);
return false;
}
}
public boolean identify(String uniqueId, Channel channel, SocketAddress remoteAddress) {
return identify(uniqueId, channel, remoteAddress, true);
}
public BaseProtocolDecoder(Protocol protocol) {
this.protocol = protocol;
}
public void getLastLocation(Position position, Date deviceTime) {
if (position.getDeviceId() != 0) {
position.setOutdated(true);
Position last = Context.getIdentityManager().getLastPosition(position.getDeviceId());
if (last != null) {
position.setFixTime(last.getFixTime());
position.setValid(last.getValid());
position.setLatitude(last.getLatitude());
position.setLongitude(last.getLongitude());
position.setAltitude(last.getAltitude());
position.setSpeed(last.getSpeed());
position.setCourse(last.getCourse());
} else {
position.setFixTime(new Date(0));
}
if (deviceTime != null) {
position.setDeviceTime(deviceTime);
} else {
position.setDeviceTime(new Date());
}
}
}
@Override
protected void onMessageEvent(Channel channel, SocketAddress remoteAddress, Object msg) {
if (hasDeviceId()) {
Context.getConnectionManager().updateDevice(deviceId, Device.STATUS_ONLINE, new Date());
}
}
@Override
protected Object handleEmptyMessage(Channel channel, SocketAddress remoteAddress, Object msg) {
if (Context.getConfig().getBoolean("database.saveEmpty") && hasDeviceId()) {
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(getDeviceId());
getLastLocation(position, null);
return position;
} else {
return null;
}
}
}
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