70 lines
2.9 KiB
PL/PgSQL
70 lines
2.9 KiB
PL/PgSQL
--DO NOT MODIFY THIS FILE, IT IS GENERATED AUTOMATICALLY FROM SOURCES
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-- Complain if script is sourced in psql, rather than via CREATE EXTENSION
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\echo Use "ALTER EXTENSION cdb_dataservices_server UPDATE TO '0.30.3'" to load this file. \quit
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-- HERE goes your code to upgrade/downgrade
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CREATE OR REPLACE FUNCTION cdb_dataservices_server._cdb_mapbox_isodistance(
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username TEXT,
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orgname TEXT,
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source geometry(Geometry, 4326),
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mode TEXT,
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data_range integer[],
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options text[])
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RETURNS SETOF cdb_dataservices_server.isoline AS $$
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from cartodb_services.tools import ServiceManager
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from cartodb_services.mapbox import MapboxMatrixClient, MapboxIsolines
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from cartodb_services.mapbox.types import TRANSPORT_MODE_TO_MAPBOX
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from cartodb_services.tools import Coordinate
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from cartodb_services.refactor.service.mapbox_isolines_config import MapboxIsolinesConfigBuilder
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import cartodb_services
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cartodb_services.init(plpy, GD)
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service_manager = ServiceManager('isolines', MapboxIsolinesConfigBuilder, username, orgname, GD)
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service_manager.assert_within_limits()
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try:
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client = MapboxMatrixClient(service_manager.config.mapbox_api_key, service_manager.logger, service_manager.config.service_params)
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mapbox_isolines = MapboxIsolines(client, service_manager.logger)
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if source:
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lat = plpy.execute("SELECT ST_Y('%s') AS lat" % source)[0]['lat']
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lon = plpy.execute("SELECT ST_X('%s') AS lon" % source)[0]['lon']
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origin = Coordinate(lon,lat)
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else:
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raise Exception('source is NULL')
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profile = TRANSPORT_MODE_TO_MAPBOX.get(mode)
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# -- TODO Support options properly
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isolines = {}
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for r in data_range:
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isoline = mapbox_isolines.calculate_isodistance(origin, r, profile)
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isolines[r] = isoline
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result = []
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for r in data_range:
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if len(isolines[r]) >= 3:
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# -- TODO encapsulate this block into a func/method
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locations = isolines[r] + [ isolines[r][0] ] # close the polygon repeating the first point
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wkt_coordinates = ','.join(["%f %f" % (l.longitude, l.latitude) for l in locations])
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sql = "SELECT ST_MakeValid(ST_MPolyFromText('MULTIPOLYGON((({0})))', 4326)) as geom".format(wkt_coordinates)
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multipolygon = plpy.execute(sql, 1)[0]['geom']
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else:
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multipolygon = None
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result.append([source, r, multipolygon])
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service_manager.quota_service.increment_success_service_use()
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service_manager.quota_service.increment_isolines_service_use(len(isolines))
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return result
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except BaseException as e:
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import sys
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service_manager.quota_service.increment_failed_service_use()
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service_manager.logger.error('Error trying to get Mapbox isolines', sys.exc_info(), data={"username": username, "orgname": orgname})
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raise Exception('Error trying to get Mapbox isolines')
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finally:
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service_manager.quota_service.increment_total_service_use()
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$$ LANGUAGE plpythonu SECURITY DEFINER STABLE PARALLEL RESTRICTED;
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