Avoid reaching provider for empty geocodings

server/extension/sql/20_geocode_street.sql

@@ -98,6 +98,11 @@ RETURNS Geometry AS $$
 
   try:
     service_manager.assert_within_limits()
+
+    if not searchtext and not city and not state_province and not country:
+      service_manager.quota_service.increment_empty_service_use()
+      return None
+
     geocoder = HereMapsGeocoder(service_manager.config.heremaps_app_id, service_manager.config.heremaps_app_code, service_manager.logger, service_manager.config.heremaps_service_params)
     coordinates = geocoder.geocode(searchtext=searchtext, city=city, state=state_province, country=country)
     if coordinates:
@@ -130,6 +135,11 @@ RETURNS Geometry AS $$
 
   try:
     service_manager.assert_within_limits(quota=False)
+
+    if not searchtext and not city and not state_province and not country:
+      service_manager.quota_service.increment_empty_service_use()
+      return None
+
     geocoder = GoogleMapsGeocoder(service_manager.config.google_client_id, service_manager.config.google_api_key, service_manager.logger)
     coordinates = geocoder.geocode(searchtext=searchtext, city=city, state=state_province, country=country)
     if coordinates:
@@ -166,6 +176,11 @@ RETURNS Geometry AS $$
 
   try:
     service_manager.assert_within_limits()
+
+    if not searchtext and not city and not state_province and not country:
+      service_manager.quota_service.increment_empty_service_use()
+      return None
+
     geocoder = MapzenGeocoder(service_manager.config.mapzen_api_key, service_manager.logger, service_manager.config.service_params)
     country_iso3 = None
     if country:
@@ -208,6 +223,11 @@ RETURNS Geometry AS $$
 
   try:
     service_manager.assert_within_limits()
+
+    if not searchtext and not city and not state_province and not country:
+      service_manager.quota_service.increment_empty_service_use()
+      return None
+
     geocoder = MapboxGeocoder(service_manager.config.mapbox_api_key, service_manager.logger, service_manager.config.service_params)
 
     country_iso3166 = None