/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.camel.component.geocoder;
import java.math.BigDecimal;
import java.net.URL;
import com.google.code.geocoder.Geocoder;
import com.google.code.geocoder.model.GeocodeResponse;
import com.google.code.geocoder.model.GeocoderAddressComponent;
import com.google.code.geocoder.model.GeocoderRequest;
import com.google.code.geocoder.model.GeocoderResult;
import com.google.code.geocoder.model.GeocoderStatus;
import com.google.code.geocoder.model.LatLng;
import org.apache.camel.Exchange;
import org.apache.camel.impl.DefaultProducer;
import org.apache.camel.util.ObjectHelper;
import org.codehaus.jackson.JsonNode;
import org.codehaus.jackson.map.ObjectMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static org.apache.camel.util.ObjectHelper.isEmpty;
import static org.apache.camel.util.ObjectHelper.notNull;
/**
* The GeoCoder producer.
*/
public class GeoCoderProducer extends DefaultProducer {
private static final Logger LOG = LoggerFactory.getLogger(GeoCoderProducer.class);
private GeoCoderEndpoint endpoint;
private Geocoder geocoder;
public GeoCoderProducer(GeoCoderEndpoint endpoint) {
super(endpoint);
this.endpoint = endpoint;
}
public void process(Exchange exchange) throws Exception {
// header take precedence
String address = exchange.getIn().getHeader(GeoCoderConstants.ADDRESS, String.class);
if (address == null) {
address = endpoint.getAddress();
}
String latlng = exchange.getIn().getHeader(GeoCoderConstants.LATLNG, String.class);
if (latlng == null) {
latlng = endpoint.getLatlng();
}
if (latlng != null) {
GeocoderRequest req = new GeocoderRequest();
req.setLanguage(endpoint.getLanguage());
String lat = ObjectHelper.before(latlng, ",");
String lng = ObjectHelper.after(latlng, ",");
req.setLocation(new LatLng(lat, lng));
LOG.debug("Geocode for lat/lng {}", latlng);
GeocodeResponse res = geocoder.geocode(req);
LOG.debug("Geocode response {}", res);
if (res != null) {
extractGeoResult(res, exchange);
}
} else if (address != null) {
// is it current address
if ("current".equals(address)) {
processCurrentLocation(exchange);
} else {
LOG.debug("Geocode for address {}", address);
GeocoderRequest req = new GeocoderRequest(address, endpoint.getLanguage());
GeocodeResponse res = geocoder.geocode(req);
LOG.debug("Geocode response {}", res);
if (res != null) {
extractGeoResult(res, exchange);
}
}
}
}
protected void processCurrentLocation(Exchange exchange) throws Exception {
LOG.debug("Geocode for current address");
String json = exchange.getContext().getTypeConverter().mandatoryConvertTo(String.class, new URL("http://freegeoip.net/json/"));
if (isEmpty(json)) {
throw new IllegalStateException("Got the unexpected value '" + json + "' for the geolocation");
}
LOG.debug("Geocode response {}", json);
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.OK);
ObjectMapper mapper = new ObjectMapper();
JsonNode node = mapper.readValue(json, JsonNode.class);
JsonNode latitudeNode = notNull(node.get("latitude"), "latitude");
JsonNode longitudeNode = notNull(node.get("longitude"), "longitude");
String resLatlng = latitudeNode.asText() + "," + longitudeNode.asText();
exchange.getIn().setHeader(GeoCoderConstants.LATLNG, resLatlng);
JsonNode countryCode = node.get("country_code");
JsonNode countryName = node.get("country_name");
if (countryCode != null) {
exchange.getIn().setHeader(GeoCoderConstants.COUNTRY_SHORT, countryCode.asText());
}
if (countryName != null) {
exchange.getIn().setHeader(GeoCoderConstants.COUNTRY_LONG, countryName.asText());
}
JsonNode regionCode = node.get("region_code");
JsonNode regionName = node.get("region_name");
if (regionCode != null) {
exchange.getIn().setHeader(GeoCoderConstants.REGION_CODE, regionCode.asText());
}
if (regionName != null) {
exchange.getIn().setHeader(GeoCoderConstants.REGION_NAME, regionName.asText());
}
JsonNode city = node.get("city");
if (city != null) {
exchange.getIn().setHeader(GeoCoderConstants.CITY, city.asText());
}
// should we include body
if (!endpoint.isHeadersOnly()) {
exchange.getIn().setBody(json);
}
}
protected void extractGeoResult(GeocodeResponse res, Exchange exchange) {
exchange.getIn().setHeader(GeoCoderConstants.STATUS, res.getStatus());
// should we include body
if (!endpoint.isHeadersOnly()) {
exchange.getIn().setBody(res);
}
if (res.getStatus() == GeocoderStatus.OK) {
exchange.getIn().setHeader(GeoCoderConstants.ADDRESS, res.getResults().get(0).getFormattedAddress());
// just grab the first element and its lat and lon
BigDecimal resLat = res.getResults().get(0).getGeometry().getLocation().getLat();
BigDecimal resLon = res.getResults().get(0).getGeometry().getLocation().getLng();
exchange.getIn().setHeader(GeoCoderConstants.LAT, resLat.toPlainString());
exchange.getIn().setHeader(GeoCoderConstants.LNG, resLon.toPlainString());
String resLatlng = resLat.toPlainString() + "," + resLon.toPlainString();
exchange.getIn().setHeader(GeoCoderConstants.LATLNG, resLatlng);
GeocoderAddressComponent country = getCountry(res);
if (country != null) {
exchange.getIn().setHeader(GeoCoderConstants.COUNTRY_SHORT, country.getShortName());
exchange.getIn().setHeader(GeoCoderConstants.COUNTRY_LONG, country.getLongName());
}
GeocoderAddressComponent city = getCity(res);
if (city != null) {
exchange.getIn().setHeader(GeoCoderConstants.CITY, city.getLongName());
}
}
}
private static GeocoderAddressComponent getCountry(GeocodeResponse res) {
for (GeocoderResult result : res.getResults()) {
for (String type : result.getTypes()) {
if ("country".equals(type)) {
return result.getAddressComponents().get(0);
}
}
}
return null;
}
private static GeocoderAddressComponent getCity(GeocodeResponse res) {
for (GeocoderResult result : res.getResults()) {
for (String type : result.getTypes()) {
if ("locality".equals(type)) {
return result.getAddressComponents().get(0);
}
}
}
return null;
}
@Override
protected void doStart() throws Exception {
if (endpoint.getClientId() != null) {
geocoder = new Geocoder(endpoint.getClientId(), endpoint.getClientKey());
} else {
geocoder = new Geocoder();
}
}
}