134 lines
5.9 KiB
PL/PgSQL
134 lines
5.9 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 '0.12.0'" to load this file. \quit
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CREATE OR REPLACE FUNCTION cdb_dataservices_server._cdb_mapzen_isolines(
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username TEXT,
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orgname TEXT,
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isotype 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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import json
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from cartodb_services.mapzen import MatrixClient
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from cartodb_services.mapzen import MapzenIsolines
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from cartodb_services.metrics import QuotaService
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redis_conn = GD["redis_connection_{0}".format(username)]['redis_metrics_connection']
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user_mapzen_isolines_routing_config = GD["user_mapzen_isolines_routing_config_{0}".format(username)]
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# -- Check the quota
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quota_service = QuotaService(user_mapzen_isolines_routing_config, redis_conn)
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if not quota_service.check_user_quota():
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plpy.error('You have reached the limit of your quota')
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try:
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client = MatrixClient(user_mapzen_isolines_routing_config.mapzen_matrix_api_key)
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mapzen_isolines = MapzenIsolines(client)
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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 = {'lat': lat, 'lon': lon}
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else:
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raise Exception('source is NULL')
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# -- TODO Support options properly
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isolines = {}
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if isotype == 'isodistance':
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for r in data_range:
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isoline = mapzen_isolines.calculate_isodistance(origin, mode, r)
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isolines[r] = (isoline)
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elif isotype == 'isochrone':
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for r in data_range:
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isoline = mapzen_isolines.calculate_isochrone(origin, mode, r)
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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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# -- 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['lon'], l['lat']) for l in locations])
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sql = "SELECT 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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result.append([source, r, multipolygon])
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quota_service.increment_success_service_use()
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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, traceback
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type_, value_, traceback_ = sys.exc_info()
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quota_service.increment_failed_service_use()
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error_msg = 'There was an error trying to obtain isolines using mapzen: {0}'.format(e)
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plpy.debug(traceback.format_tb(traceback_))
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raise e
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#plpy.error(error_msg)
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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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-- mapzen isodistance
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CREATE OR REPLACE FUNCTION cdb_dataservices_server.cdb_mapzen_isodistance(username TEXT, orgname TEXT, source geometry(Geometry, 4326), mode TEXT, range integer[], options text[] DEFAULT array[]::text[])
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RETURNS SETOF cdb_dataservices_server.isoline AS $$
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plpy.execute("SELECT cdb_dataservices_server._connect_to_redis('{0}')".format(username))
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redis_conn = GD["redis_connection_{0}".format(username)]['redis_metrics_connection']
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plpy.execute("SELECT cdb_dataservices_server._get_mapzen_isolines_config({0}, {1})".format(plpy.quote_nullable(username), plpy.quote_nullable(orgname)))
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user_isolines_config = GD["user_mapzen_isolines_routing_config_{0}".format(username)]
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type = 'isodistance'
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mapzen_plan = plpy.prepare("SELECT cdb_dataservices_server._cdb_mapzen_isolines($1, $2, $3, $4, $5, $6, $7) as isoline; ", ["text", "text", "text", "geometry(Geometry, 4326)", "text", "integer[]", "text[]"])
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result = plpy.execute(mapzen_plan, [username, orgname, type, source, mode, range, options])
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isolines = []
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for element in result:
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isoline = element['isoline']
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isoline = isoline.translate(None, "()").split(',')
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isolines.append(isoline)
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return isolines
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$$ LANGUAGE plpythonu;
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-- mapzen isochrones
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CREATE OR REPLACE FUNCTION cdb_dataservices_server.cdb_mapzen_isochrone(username TEXT, orgname TEXT, source geometry(Geometry, 4326), mode TEXT, range integer[], options text[] DEFAULT array[]::text[])
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RETURNS SETOF cdb_dataservices_server.isoline AS $$
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plpy.execute("SELECT cdb_dataservices_server._connect_to_redis('{0}')".format(username))
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redis_conn = GD["redis_connection_{0}".format(username)]['redis_metrics_connection']
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plpy.execute("SELECT cdb_dataservices_server._get_mapzen_isolines_config({0}, {1})".format(plpy.quote_nullable(username), plpy.quote_nullable(orgname)))
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user_isolines_config = GD["user_mapzen_isolines_routing_config_{0}".format(username)]
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type = 'isochrone'
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mapzen_plan = plpy.prepare("SELECT cdb_dataservices_server._cdb_mapzen_isolines($1, $2, $3, $4, $5, $6, $7) as isoline; ", ["text", "text", "text", "geometry(Geometry, 4326)", "text", "integer[]", "text[]"])
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result = plpy.execute(mapzen_plan, [username, orgname, type, source, mode, range, options])
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isolines = []
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for element in result:
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isoline = element['isoline']
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isoline = isoline.translate(None, "()").split(',') #--TODO what is this for?
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isolines.append(isoline)
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return isolines
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$$ LANGUAGE plpythonu;
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CREATE OR REPLACE FUNCTION cdb_dataservices_server._get_mapzen_isolines_config(username text, orgname text)
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RETURNS boolean AS $$
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cache_key = "user_mapzen_isolines_routing_config_{0}".format(username)
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if cache_key in GD:
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return False
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else:
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from cartodb_services.metrics import MapzenIsolinesRoutingConfig
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plpy.execute("SELECT cdb_dataservices_server._connect_to_redis('{0}')".format(username))
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redis_conn = GD["redis_connection_{0}".format(username)]['redis_metadata_connection']
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mapzen_isolines_config = MapzenIsolinesRoutingConfig(redis_conn, plpy, username, orgname)
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GD[cache_key] = mapzen_isolines_config
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return True
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$$ LANGUAGE plpythonu SECURITY DEFINER;
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