dataservices-api/client/sql/21_bulk_geocoding_functions.sql
Juan Ignacio Sánchez Lara b0c1948c14 TL;DR: safer deployment and minor fixes
- Instead of modifying cdb_service_quota_info to return max_batch_size,
a new type (service_quota_info_batch) and a new function
(cdb_service_quota_info_batch) are created. That makes deployment safe.
- Fixes geocoding with forced batch size 1.
- Improves namespacing for count_estimate (->
cdb_dataservices_client.cdb_count_estimate).
- Improves namespacing for jsonb_array_casttext (->
cdb_dataservices_client.cdb_jsonb_array_casttext).
2018-07-18 14:57:40 +02:00

77 lines
3.1 KiB
PL/PgSQL

CREATE OR REPLACE FUNCTION cdb_dataservices_client.cdb_bulk_geocode_street_point (query text,
street_column text, city_column text default null, state_column text default null, country_column text default null, batch_size integer DEFAULT NULL)
RETURNS SETOF cdb_dataservices_client.geocoding AS $$
DECLARE
query_row_count integer;
enough_quota boolean;
remaining_quota integer;
max_batch_size integer;
cartodb_id_batch integer;
batches_n integer;
DEFAULT_BATCH_SIZE CONSTANT numeric := 100;
MAX_SAFE_BATCH_SIZE CONSTANT numeric := 5000;
temp_table_name text;
BEGIN
SELECT csqi.monthly_quota - csqi.used_quota AS remaining_quota, csqi.max_batch_size
INTO remaining_quota, max_batch_size
FROM cdb_dataservices_client.cdb_service_quota_info_batch() csqi
WHERE service = 'hires_geocoder';
RAISE DEBUG 'remaining_quota: %; max_batch_size: %', remaining_quota, max_batch_size;
IF batch_size IS NULL THEN
batch_size := max_batch_size;
ELSIF batch_size > max_batch_size THEN
RAISE EXCEPTION 'batch_size must be lower than %', max_batch_size + 1;
END IF;
IF batch_size > MAX_SAFE_BATCH_SIZE THEN
batch_size := MAX_SAFE_BATCH_SIZE;
END IF;
EXECUTE format('SELECT count(1), ceil(count(1)::float/%s) FROM (%s) _x', batch_size, query)
INTO query_row_count, batches_n;
RAISE DEBUG 'cdb_bulk_geocode_street_point --> query_row_count: %; query: %; country: %; state: %; city: %; street: %',
query_row_count, query, country_column, state_column, city_column, street_column;
SELECT cdb_dataservices_client.cdb_enough_quota('hires_geocoder', query_row_count) INTO enough_quota;
IF remaining_quota < query_row_count THEN
RAISE EXCEPTION 'Remaining quota: %. Estimated cost: %', remaining_quota, query_row_count;
END IF;
RAISE DEBUG 'batches_n: %', batches_n;
temp_table_name := 'bulk_geocode_street_' || md5(random()::text);
EXECUTE format('CREATE TEMPORARY TABLE %s ' ||
'(cartodb_id integer, the_geom geometry(Multipolygon,4326), metadata jsonb)',
temp_table_name);
select
coalesce(street_column, ''''''), coalesce(city_column, ''''''),
coalesce(state_column, ''''''), coalesce(country_column, '''''')
into street_column, city_column, state_column, country_column;
IF batches_n > 0 THEN
FOR cartodb_id_batch in 0..(batches_n - 1)
LOOP
EXECUTE format(
'WITH geocoding_data as (' ||
' SELECT ' ||
' json_build_object(''id'', cartodb_id, ''address'', %s, ''city'', %s, ''state'', %s, ''country'', %s) as data , ' ||
' floor((row_number() over () - 1)::float/$1) as batch' ||
' FROM (%s) _x' ||
') ' ||
'INSERT INTO %s SELECT (cdb_dataservices_client._cdb_bulk_geocode_street_point(jsonb_agg(data))).* ' ||
'FROM geocoding_data ' ||
'WHERE batch = $2', street_column, city_column, state_column, country_column, query, temp_table_name)
USING batch_size, cartodb_id_batch;
END LOOP;
END IF;
RETURN QUERY EXECUTE 'SELECT * FROM ' || quote_ident(temp_table_name);
END;
$$ LANGUAGE 'plpgsql' SECURITY DEFINER VOLATILE PARALLEL UNSAFE;