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org.apache.camel.component.geocoder.GeoCoderGoogleProducer Maven / Gradle / Ivy
/*
* 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.util.Locale;
import com.google.maps.GeoApiContext;
import com.google.maps.GeocodingApi;
import com.google.maps.GeolocationApi;
import com.google.maps.errors.InvalidRequestException;
import com.google.maps.errors.OverDailyLimitException;
import com.google.maps.errors.OverQueryLimitException;
import com.google.maps.errors.RequestDeniedException;
import com.google.maps.errors.UnknownErrorException;
import com.google.maps.model.AddressComponent;
import com.google.maps.model.AddressType;
import com.google.maps.model.GeocodingResult;
import com.google.maps.model.GeolocationPayload;
import com.google.maps.model.GeolocationResult;
import com.google.maps.model.LatLng;
import org.apache.camel.Exchange;
import org.apache.camel.support.DefaultProducer;
import org.apache.camel.util.StringHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* The GeoCoder producer for Google.
*/
public class GeoCoderGoogleProducer extends DefaultProducer {
private static final Logger LOG = LoggerFactory.getLogger(GeoCoderGoogleProducer.class);
private GeoCoderEndpoint endpoint;
private GeoApiContext context;
public GeoCoderGoogleProducer(GeoCoderEndpoint endpoint) {
super(endpoint);
this.endpoint = endpoint;
}
@Override
public void process(Exchange exchange) throws Exception {
try {
// headers 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) {
String lat = StringHelper.before(latlng, ",");
String lng = StringHelper.after(latlng, ",");
LatLng latLng = new LatLng(Double.parseDouble(lat), Double.parseDouble(lng));
LOG.debug("Geocode for lat/lng {}", latlng);
GeocodingResult[] results = GeocodingApi.reverseGeocode(context, latLng).await();
LOG.debug("Geocode response {}", results);
if (results != null) {
extractGeoResult(results, exchange);
}
} else if (address != null) {
// is it current address
if ("current".equals(address)) {
processCurrentLocation(exchange);
} else {
LOG.debug("Geocode for address {}", address);
GeocodingResult[] results = GeocodingApi.geocode(context, address).await();
LOG.debug("Geocode response {}", results);
if (results != null) {
extractGeoResult(results, exchange);
}
}
}
} catch (RequestDeniedException e) {
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.REQUEST_DENIED);
} catch (OverQueryLimitException e) {
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.OVER_QUERY_LIMIT);
} catch (OverDailyLimitException e) {
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.OVER_DAILY_LIMIT);
} catch (InvalidRequestException e) {
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.INVALID_REQUEST);
} catch (UnknownErrorException e) {
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.UNKNOWN_ERROR);
}
}
/**
* Perform geolocation to retrieve LatLng and then perform a geocoding
*/
protected void processCurrentLocation(Exchange exchange) throws Exception {
LOG.debug("Geolocation for current location");
GeolocationPayload payload = new GeolocationPayload();
payload.considerIp = true;
GeolocationResult result = GeolocationApi.geolocate(context, payload).await();
LOG.debug("Geolocation response {}", result);
// status
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.OK);
// latlng
String resLatlng = result.location.toString();
exchange.getIn().setHeader(GeoCoderConstants.LATLNG, resLatlng);
// address - reverse geocode
LOG.debug("Geocode - reverse geocode for location {}", resLatlng);
GeocodingResult[] results = GeocodingApi.reverseGeocode(context, result.location).await();
LOG.debug("Geocode response {}", results);
if (results != null) {
extractGeoResult(results, exchange);
}
}
private void setLatLngToExchangeHeader(LatLng location, Exchange exchange) {
double resLat = location.lat;
double resLng = location.lng;
exchange.getIn().setHeader(GeoCoderConstants.LAT, formatLatOrLon(resLat));
exchange.getIn().setHeader(GeoCoderConstants.LNG, formatLatOrLon(resLng));
String resLatlng = location.toString();
exchange.getIn().setHeader(GeoCoderConstants.LATLNG, resLatlng);
}
protected void extractGeoResult(GeocodingResult[] res, Exchange exchange) {
// should we include body
if (!endpoint.isHeadersOnly()) {
exchange.getIn().setBody(res);
}
// no results
if (res.length == 0) {
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.ZERO_RESULTS);
return;
}
exchange.getIn().setHeader(GeoCoderConstants.STATUS, GeocoderStatus.OK);
GeocodingResult first = res[0];
exchange.getIn().setHeader(GeoCoderConstants.ADDRESS, first.formattedAddress);
// just grab the first element and its lat and lon
setLatLngToExchangeHeader(first.geometry.location, exchange);
// additional details
AddressComponent country = getCountry(res);
if (country != null) {
exchange.getIn().setHeader(GeoCoderConstants.COUNTRY_SHORT, country.shortName);
exchange.getIn().setHeader(GeoCoderConstants.COUNTRY_LONG, country.longName);
}
AddressComponent city = getCity(res);
if (city != null) {
exchange.getIn().setHeader(GeoCoderConstants.CITY, city.longName);
}
AddressComponent postalCode = getPostalCode(res);
if (postalCode != null) {
exchange.getIn().setHeader(GeoCoderConstants.POSTAL_CODE, postalCode.shortName);
}
AddressComponent region = getRegion(res);
if (region != null) {
exchange.getIn().setHeader(GeoCoderConstants.REGION_CODE, region.shortName);
exchange.getIn().setHeader(GeoCoderConstants.REGION_NAME, region.longName);
}
}
private String formatLatOrLon(double value) {
return String.format(Locale.ENGLISH, "%.8f", value);
}
private static AddressComponent getComponent(GeocodingResult[] results, AddressType addressType) {
for (GeocodingResult result : results) {
for (AddressType type : result.types) {
if (type == addressType && result.addressComponents.length > 0) {
return result.addressComponents[0];
}
}
}
return null;
}
private static AddressComponent getCountry(GeocodingResult[] res) {
return getComponent(res, AddressType.COUNTRY);
}
private static AddressComponent getCity(GeocodingResult[] res) {
return getComponent(res, AddressType.LOCALITY);
}
private static AddressComponent getPostalCode(GeocodingResult[] res) {
return getComponent(res, AddressType.POSTAL_CODE);
}
private static AddressComponent getRegion(GeocodingResult[] res) {
return getComponent(res, AddressType.ADMINISTRATIVE_AREA_LEVEL_1);
}
@Override
protected void doStart() {
context = endpoint.createGeoApiContext();
}
}
