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/*
* Copyright 2012 - 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;
import org.jboss.netty.channel.ChannelEvent;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelUpstreamHandler;
import org.jboss.netty.channel.Channels;
import org.jboss.netty.channel.MessageEvent;
import org.traccar.geocoder.AddressFormat;
import org.traccar.geocoder.Geocoder;
import org.traccar.helper.DistanceCalculator;
import org.traccar.helper.Log;
import org.traccar.model.Position;
public class GeocoderHandler implements ChannelUpstreamHandler {
private final Geocoder geocoder;
private final boolean processInvalidPositions;
private final AddressFormat addressFormat;
private final int geocoderReuseDistance;
public GeocoderHandler(Geocoder geocoder, boolean processInvalidPositions) {
this.geocoder = geocoder;
this.processInvalidPositions = processInvalidPositions;
String formatString = Context.getConfig().getString("geocoder.format");
if (formatString != null) {
addressFormat = new AddressFormat(formatString);
} else {
addressFormat = new AddressFormat();
}
geocoderReuseDistance = Context.getConfig().getInteger("geocoder.reuseDistance", 0);
}
@Override
public void handleUpstream(final ChannelHandlerContext ctx, ChannelEvent evt) throws Exception {
if (!(evt instanceof MessageEvent)) {
ctx.sendUpstream(evt);
return;
}
final MessageEvent event = (MessageEvent) evt;
Object message = event.getMessage();
if (message instanceof Position) {
final Position position = (Position) message;
if (processInvalidPositions || position.getValid()) {
if (geocoderReuseDistance != 0) {
Position lastPosition = Context.getIdentityManager().getLastPosition(position.getDeviceId());
if (lastPosition != null && lastPosition.getAddress() != null) {
double distance = DistanceCalculator.distance(
position.getLatitude(), position.getLongitude(),
lastPosition.getLatitude(), lastPosition.getLongitude());
if (distance <= geocoderReuseDistance) {
position.setAddress(lastPosition.getAddress());
Channels.fireMessageReceived(ctx, position, event.getRemoteAddress());
return;
}
}
}
Context.getStatisticsManager().registerGeocoderRequest();
geocoder.getAddress(addressFormat, position.getLatitude(), position.getLongitude(),
new Geocoder.ReverseGeocoderCallback() {
@Override
public void onSuccess(String address) {
position.setAddress(address);
Channels.fireMessageReceived(ctx, position, event.getRemoteAddress());
}
@Override
public void onFailure(Throwable e) {
Log.warning("Geocoding failed", e);
Channels.fireMessageReceived(ctx, position, event.getRemoteAddress());
}
});
} else {
Channels.fireMessageReceived(ctx, position, event.getRemoteAddress());
}
} else {
Channels.fireMessageReceived(ctx, message, event.getRemoteAddress());
}
}
}
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