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package dk.daoas.daoadresseservice;
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import java.net.URLEncoder;
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import com.google.gson.Gson;
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import com.google.common.util.concurrent.RateLimiter;
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import dk.daoas.daoadresseservice.admin.ServiceConfig;
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import dk.daoas.daoadresseservice.beans.OSMAddress;
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import dk.daoas.daoadresseservice.beans.SearchRequest;
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import dk.daoas.daoadresseservice.beans.SearchResult;
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import dk.daoas.daoadresseservice.util.HttpUtil;
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import dk.thoerup.circuitbreaker.CircuitBreaker;
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import dk.thoerup.circuitbreaker.CircuitBreakerManager;
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import dk.thoerup.circuitbreaker.CircuitInvocation;
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public class OSMStreetnameHelper implements StreetnameHelper {
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ServiceConfig conf;
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RateLimiter limiter;
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public OSMStreetnameHelper(ServiceConfig conf) {
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this.conf = conf;
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limiter = RateLimiter.create( 10.0 ); //Max 10 requests pr sekund
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}
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@Override
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public String proposeStreetName(SearchRequest request, SearchResult result) {
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if (conf.useOpenStreetMaps == false)
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return null;
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result.osm = true;
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try {
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OSMInvocation wrapper = new OSMInvocation( limiter, conf, request.postnr, request.vejnavn );
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CircuitBreaker breaker = CircuitBreakerManager.getManager().getCircuitBreaker("osm");
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result.osmVej = (String) breaker.invoke(wrapper);
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return result.osmVej;
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} catch (Exception e) {
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System.out.println( "OSMError: " + e.getClass().getName() +" / "+ e.getMessage() );
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}
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return null;
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}
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static class OSMInvocation implements CircuitInvocation {
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int postnr;
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String vejnavn;
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ServiceConfig conf;
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RateLimiter limiter;
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public OSMInvocation(RateLimiter limiter, ServiceConfig conf, int postnr, String vejnavn) {
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this.limiter = limiter;
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this.conf = conf;
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this.postnr= postnr;
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this.vejnavn = vejnavn;
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}
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@Override
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public String proceed() throws Exception {
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limiter.acquire();
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//TimingHelper timer = new TimingHelper();
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String encVej = URLEncoder.encode(vejnavn, "UTF-8");
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String url = conf.nominatimBase + "/search?country=DK&street=" + encVej + "&postalcode=" + postnr + "&format=json&addressdetails=1";
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//String url = "http://nominatim.openstreetmap.org/search?country=DK&street=" + encVej + "&format=json&addressdetails=1";
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//System.out.println (url);
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String json = HttpUtil.getContentString(url, conf.osmTimeout);
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//System.out.println(json);
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Gson gson = new Gson();
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OSMAddress adrList[] = gson.fromJson(json, OSMAddress[].class);
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//timer.printElapsed("OSM elapsed");
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//System.out.println("Count: " + adrList.length);
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if (adrList.length != 1)
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return null;
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if (adrList[0].address != null) {
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return adrList[0].address.road;
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}
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return null;
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}
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}
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}
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