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/*
* Copyright 2015 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.geolocation;
import org.asynchttpclient.AsyncCompletionHandler;
import org.asynchttpclient.Response;
import org.traccar.Context;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonReader;
public class OpenCellIdGeolocationProvider implements GeolocationProvider {
private String url;
public OpenCellIdGeolocationProvider(String key) {
this("http://opencellid.org/cell/get", key);
}
public OpenCellIdGeolocationProvider(String url, String key) {
this.url = url + "?format=json&mcc=%d&mnc=%d&lac=%d&cellid=%d&key=" + key;
}
@Override
public void getLocation(Network network, final LocationProviderCallback callback) {
if (network.getCellTowers() != null && !network.getCellTowers().isEmpty()) {
CellTower cellTower = network.getCellTowers().iterator().next();
String request = String.format(url, cellTower.getMobileCountryCode(), cellTower.getMobileNetworkCode(),
cellTower.getLocationAreaCode(), cellTower.getCellId());
Context.getAsyncHttpClient().prepareGet(request).execute(new AsyncCompletionHandler() {
@Override
public Object onCompleted(Response response) throws Exception {
try (JsonReader reader = Json.createReader(response.getResponseBodyAsStream())) {
JsonObject json = reader.readObject();
if (json.containsKey("lat") && json.containsKey("lon")) {
callback.onSuccess(
json.getJsonNumber("lat").doubleValue(),
json.getJsonNumber("lon").doubleValue(), 0);
} else {
callback.onFailure(new GeolocationException("Coordinates are missing"));
}
}
return null;
}
@Override
public void onThrowable(Throwable t) {
callback.onFailure(t);
}
});
} else {
callback.onFailure(new GeolocationException("No network information"));
}
}
}
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