Check for some issues like empty input, recoverable exceptions, etc

server/extension/sql/100_routing_helper.sql

@@ -28,6 +28,11 @@ RETURNS cdb_dataservices_server.simple_route AS $$
   try:
     client = MapzenRouting(user_routing_config.mapzen_app_key)
 
+    if not origin or not destination:
+      plpy.notice("Empty origin or destination")
+      quota_service.increment_empty_service_use()
+      return [None, None, None]
+
     orig_lat = plpy.execute("SELECT ST_Y('%s') AS lat" % origin)[0]['lat']
     orig_lon = plpy.execute("SELECT ST_X('%s') AS lon" % origin)[0]['lon']
     origin_coordinates = Coordinate(orig_lon, orig_lat)
@@ -39,10 +44,15 @@ RETURNS cdb_dataservices_server.simple_route AS $$
 
     if resp and resp.shape:
       shape_linestring = polyline_to_linestring(resp.shape)
-      quota_service.increment_success_service_use()
-      return [shape_linestring, resp.length, resp.duration]
+      if shape_linestring:
+        quota_service.increment_success_service_use()
+        return [shape_linestring, resp.length, resp.duration]
+      else:
+        quota_service.increment_empty_service_use()
+        return [None, None, None]
     else:
       quota_service.increment_empty_service_use()
+      return [None, None, None]
   except BaseException as e:
     import sys, traceback
     type_, value_, traceback_ = sys.exc_info()

server/lib/python/cartodb_services/cartodb_services/mapzen/types.py

@@ -10,7 +10,11 @@ def polyline_to_linestring(polyline):
         coordinates.append("%s %s" % (point[1]/10, point[0]/10))
     wkt_coordinates = ','.join(coordinates)
 
-    sql = "SELECT ST_GeomFromText('LINESTRING({0})', 4326) as geom".format(wkt_coordinates)
-    geometry = plpy.execute(sql, 1)[0]['geom']
+    try:
+        sql = "SELECT ST_GeomFromText('LINESTRING({0})', 4326) as geom".format(wkt_coordinates)
+        geometry = plpy.execute(sql, 1)[0]['geom']
+    except BaseException as e:
+        plpy.warning("Can't generate LINESTRING from polyline: {0}".format(e))
+        geometry = None
 
     return geometry

server/lib/python/cartodb_services/cartodb_services/tools/coordinates.py

@@ -17,3 +17,5 @@ class Coordinate:
     def to_json(self):
         return "{{\"lon\": {0},\"lat\": {1}}}".format(self._longitude,
                                                       self._latitude)
+    def __str__(self):
+        return "{0}, {1}".format(self._longitude, self._latitude)

server/lib/python/cartodb_services/cartodb_services/tools/polyline.py

@@ -11,14 +11,11 @@ class PolyLine:
         for chunk in chunks:
             coordinate = self._process_chunk(chunk)
             coordinate /= 1e5
-            print coordinate
             if len(coordinates) > 1:
                 # We have to sum the previous with the offset in this chunk
                 coordinate += coordinates[-2]
             coordinates.append(round(coordinate, 5))
 
-        print coordinates
-
         return zip(coordinates, coordinates[1:])[::2]
 
     def _extract_chunks(self, data):

server/lib/python/cartodb_services/setup.py

@@ -10,7 +10,7 @@ from setuptools import setup, find_packages
 setup(
     name='cartodb_services',
 
-    version='0.3.2',
+    version='0.3.3',
 
     description='CartoDB Services API Python Library',
 

server/lib/python/cartodb_services/test/test_heremapsrouting.py

@@ -132,7 +132,6 @@ class HereMapsRoutingIsolineTestCase(unittest.TestCase):
                                      HereMapsRoutingIsoline.ISOLINE_PATH)
 
     def test_calculate_isodistance_with_valid_params(self, req_mock):
-        print self.isoline_url
         url = "{0}?start=geo%2133.0%2C1.0&mode=shortest%3Bcar".format(self.isoline_url)
         req_mock.register_uri('GET', url, text=self.GOOD_RESPONSE)
         response = self.routing.calculate_isodistance('geo!33.0,1.0', 'car',