An interface for using Google Geocode API with PROC GROOVY in SAS

GoogleMapsGeocode.sas

%let api_key=<<YOUR GOOGLE API_KEY>>;

filename cp  temp;
 
filename ivy "%sysfunc(pathname(work,l))/ivy.jar";
 
proc http 
   method = 'get'
   url    = 'http://central.maven.org/maven2/org/apache/ivy/ivy/2.3.0-rc1/ivy-2.3.0-rc1.jar'
   out    = ivy
   ;
run;
 
proc groovy classpath=cp;
 
   add classpath=ivy;
 
   add sasjar="groovy_2.1.3" version="2.1.3.0_SAS_20130517000930";

   submit parseonly;

      import groovy.json.JsonSlurper
      import groovyx.net.http.HTTPBuilder
      import static groovyx.net.http.ContentType.JSON
      import static groovyx.net.http.Method.GET
      
      @Grab(group='org.codehaus.groovy.modules.http-builder', module='http-builder', version='0.7')
      
      class GoogleGeocodeApi {
          static def geocode(String api_key, String address) {
              LinkedHashMap geometry
              def address_url = URLEncoder.encode(address)
              def url = "https://maps.googleapis.com/maps/api/geocode/json?address=${address_url}&key=${api_key}"
              def api = new HTTPBuilder(url)
              api.request(GET, JSON) { req ->
                  response.success = { resp, json ->
                      json.results.each {
                          geometry = [
                                  formatted_address: it.formatted_address,
                                  latitude: it.geometry.location.lat,
                                  longitude: it.geometry.location.lng
                          ]
                      }
                  }
                  response.failure = { resp, json ->
                      println "Unexpected error: ${resp.status} : ${resp.error_message}"
                      resp.headers.each { println "${it.name} : ${it.value}" }
                  }
              }
              return geometry
          }
      
      }

   endsubmit;

   submit parseonly;
      import java.util.LinkedHashMap;
      import java.math.BigDecimal;
      
      public class GoogleGeocode4SAS {
          public String api_key = "";
          public String address = "";
      
          public void main() {
              GoogleGeocodeApi api = new GoogleGeocodeApi();
              geo = ((LinkedHashMap) GoogleGeocodeApi.geocode(api_key, address));
          }
      
          public String getFormattedAddress() {
              return geo.get("formatted_address").toString();
          }
      
          public double getDouble(String key) {
              BigDecimal bd = ((BigDecimal) geo.get(key));
              return bd.doubleValue();
          }
      
          public double getLatitude() {
              return getDouble("latitude");
          }
      
          public double getLongitude() {
              return getDouble("longitude");
          }
      
          protected LinkedHashMap geo;
      }
   endsubmit;

quit;

data geocode;

   if _n_=1 then do;
      dcl javaobj geo("GoogleGeocode4SAS");
      geo.setStringField("api_key", "&api_key.");
   end;

   input address $60.;

   geo.setStringField("address", address);
   geo.callVoidMethod("main");

   length formatted_address $ 200 latitude longitude 8;

   geo.callStringMethod("getFormattedAddress", formatted_address);
   geo.callDoubleMethod("getLatitude", latitude);
   geo.callDoubleMethod("getLongitude", longitude);
   
*a list of SAS offices in California for example data;
cards;
5 Park Plaza, Suite 900 Irvine, CA 92614
6700 Koll Center Pkwy Ste 120 Pleasanton, CA 94566-7032
1215 K St Ste 1100 Sacramento CA 95814-3945
10188 Telesis Court, Suite 200 San Diego, CA 92121
One Montgomery Street, 34th Floor San Francisco, CA 94104
15300 Ventura Blvd Ste 523 Sherman Oaks CA 91403-5845
;

run;

It is important to note that this example does not fully comply with the terms of use as it does not include code to display the information on a google map. This gist specifically only details the interaction with the geocoding web service.

https://developers.google.com/maps/terms#section_10_12

I used this successfully but need to return another available field from the Google geocoding API, that provides the accuracy level of the longitude/ latitude, can I get some help with that? I'm not experienced in this type of coding. (I AM experience in SAS coding.)

Do you have an example where you sign ussing HMAC-SHA1 instead of using an api key?