66 lines
2.5 KiB
PL/PgSQL
66 lines
2.5 KiB
PL/PgSQL
CREATE TYPE cdb_dataservices_server.simple_route AS (
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shape geometry(LineString,4326),
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length real,
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duration integer
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);
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CREATE OR REPLACE FUNCTION cdb_dataservices_server._cdb_mapzen_route_with_waypoints(
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username TEXT,
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orgname TEXT,
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waypoints geometry(Point, 4326)[],
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mode TEXT,
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options text[] DEFAULT ARRAY[]::text[],
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units text DEFAULT 'kilometers')
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RETURNS cdb_dataservices_server.simple_route AS $$
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import json
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from cartodb_services.mapzen import MapzenRouting, MapzenRoutingResponse
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from cartodb_services.mapzen.types import polyline_to_linestring
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from cartodb_services.metrics import QuotaService
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from cartodb_services.tools import Coordinate
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from cartodb_services.tools import Logger,LoggerConfig
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redis_conn = GD["redis_connection_{0}".format(username)]['redis_metrics_connection']
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user_routing_config = GD["user_routing_config_{0}".format(username)]
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logger_config = LoggerConfig(plpy)
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logger = Logger(logger_config)
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quota_service = QuotaService(user_routing_config, redis_conn)
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if not quota_service.check_user_quota():
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raise Exception('You have reached the limit of your quota')
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try:
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client = MapzenRouting(user_routing_config.mapzen_api_key, logger)
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if not waypoints or len(waypoints) < 2:
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logger.notice("Empty origin or destination")
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quota_service.increment_empty_service_use()
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return [None, None, None]
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waypoint_coords = []
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for waypoint in waypoints:
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lat = plpy.execute("SELECT ST_Y('%s') AS lat" % waypoint)[0]['lat']
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lon = plpy.execute("SELECT ST_X('%s') AS lon" % waypoint)[0]['lon']
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waypoint_coords.append(Coordinate(lon,lat))
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resp = client.calculate_route_point_to_point(waypoint_coords, mode, options, units)
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if resp and resp.shape:
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shape_linestring = polyline_to_linestring(resp.shape)
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if shape_linestring:
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quota_service.increment_success_service_use()
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return [shape_linestring, resp.length, resp.duration]
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else:
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quota_service.increment_empty_service_use()
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return [None, None, None]
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else:
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quota_service.increment_empty_service_use()
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return [None, None, None]
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except BaseException as e:
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import sys
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quota_service.increment_failed_service_use()
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logger.error('Error trying to calculate mapzen routing', sys.exc_info(), data={"username": username, "orgname": orgname})
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raise Exception('Error trying to calculate mapzen routing')
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finally:
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quota_service.increment_total_service_use()
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$$ LANGUAGE plpythonu SECURITY DEFINER;
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