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2a10fdc430
When using the following functions, users could see various types of errors of the type "cache lookup failed for OID XXX" with elog(), that can only be used for internal errors: * pg_describe_object() * pg_identify_object() * pg_identify_object_as_address() The set of APIs managing object addresses for all object types are made smarter by gaining a new argument "missing_ok" that allows any caller to control if an error is raised or not on an undefined object. The SQL functions listed above are changed to handle the case where an object is missing. Regression tests are added for all object types for the cases where these are undefined. Before this commit, these cases failed with cache lookup errors, and now they basically return NULL (minus the name of the object type requested). Author: Michael Paquier Reviewed-by: Aleksander Alekseev, Dmitry Dolgov, Daniel Gustafsson, Álvaro Herrera, Kyotaro Horiguchi Discussion: https://postgr.es/m/CAB7nPqSZxrSmdHK-rny7z8mi=EAFXJ5J-0RbzDw6aus=wB5azQ@mail.gmail.com
287 lines
13 KiB
PL/PgSQL
287 lines
13 KiB
PL/PgSQL
--
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-- Test for pg_get_object_address
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--
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-- Clean up in case a prior regression run failed
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SET client_min_messages TO 'warning';
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DROP ROLE IF EXISTS regress_addr_user;
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RESET client_min_messages;
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CREATE USER regress_addr_user;
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-- Test generic object addressing/identification functions
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CREATE SCHEMA addr_nsp;
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SET search_path TO 'addr_nsp';
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CREATE FOREIGN DATA WRAPPER addr_fdw;
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CREATE SERVER addr_fserv FOREIGN DATA WRAPPER addr_fdw;
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CREATE TEXT SEARCH DICTIONARY addr_ts_dict (template=simple);
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CREATE TEXT SEARCH CONFIGURATION addr_ts_conf (copy=english);
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CREATE TEXT SEARCH TEMPLATE addr_ts_temp (lexize=dsimple_lexize);
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CREATE TEXT SEARCH PARSER addr_ts_prs
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(start = prsd_start, gettoken = prsd_nexttoken, end = prsd_end, lextypes = prsd_lextype);
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CREATE TABLE addr_nsp.gentable (
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a serial primary key CONSTRAINT a_chk CHECK (a > 0),
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b text DEFAULT 'hello');
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CREATE TABLE addr_nsp.parttable (
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a int PRIMARY KEY
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) PARTITION BY RANGE (a);
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CREATE VIEW addr_nsp.genview AS SELECT * from addr_nsp.gentable;
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CREATE MATERIALIZED VIEW addr_nsp.genmatview AS SELECT * FROM addr_nsp.gentable;
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CREATE TYPE addr_nsp.gencomptype AS (a int);
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CREATE TYPE addr_nsp.genenum AS ENUM ('one', 'two');
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CREATE FOREIGN TABLE addr_nsp.genftable (a int) SERVER addr_fserv;
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CREATE AGGREGATE addr_nsp.genaggr(int4) (sfunc = int4pl, stype = int4);
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CREATE DOMAIN addr_nsp.gendomain AS int4 CONSTRAINT domconstr CHECK (value > 0);
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CREATE FUNCTION addr_nsp.trig() RETURNS TRIGGER LANGUAGE plpgsql AS $$ BEGIN END; $$;
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CREATE TRIGGER t BEFORE INSERT ON addr_nsp.gentable FOR EACH ROW EXECUTE PROCEDURE addr_nsp.trig();
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CREATE POLICY genpol ON addr_nsp.gentable;
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CREATE PROCEDURE addr_nsp.proc(int4) LANGUAGE SQL AS $$ $$;
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CREATE SERVER "integer" FOREIGN DATA WRAPPER addr_fdw;
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CREATE USER MAPPING FOR regress_addr_user SERVER "integer";
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ALTER DEFAULT PRIVILEGES FOR ROLE regress_addr_user IN SCHEMA public GRANT ALL ON TABLES TO regress_addr_user;
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ALTER DEFAULT PRIVILEGES FOR ROLE regress_addr_user REVOKE DELETE ON TABLES FROM regress_addr_user;
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-- this transform would be quite unsafe to leave lying around,
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-- except that the SQL language pays no attention to transforms:
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CREATE TRANSFORM FOR int LANGUAGE SQL (
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FROM SQL WITH FUNCTION prsd_lextype(internal),
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TO SQL WITH FUNCTION int4recv(internal));
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-- suppress warning that depends on wal_level
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SET client_min_messages = 'ERROR';
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CREATE PUBLICATION addr_pub FOR TABLE addr_nsp.gentable;
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RESET client_min_messages;
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CREATE SUBSCRIPTION regress_addr_sub CONNECTION '' PUBLICATION bar WITH (connect = false, slot_name = NONE);
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CREATE STATISTICS addr_nsp.gentable_stat ON a, b FROM addr_nsp.gentable;
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-- test some error cases
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SELECT pg_get_object_address('stone', '{}', '{}');
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SELECT pg_get_object_address('table', '{}', '{}');
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SELECT pg_get_object_address('table', '{NULL}', '{}');
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-- unrecognized object types
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DO $$
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DECLARE
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objtype text;
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BEGIN
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FOR objtype IN VALUES ('toast table'), ('index column'), ('sequence column'),
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('toast table column'), ('view column'), ('materialized view column')
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LOOP
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BEGIN
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PERFORM pg_get_object_address(objtype, '{one}', '{}');
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EXCEPTION WHEN invalid_parameter_value THEN
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RAISE WARNING 'error for %: %', objtype, sqlerrm;
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END;
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END LOOP;
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END;
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$$;
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-- miscellaneous other errors
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select * from pg_get_object_address('operator of access method', '{btree,integer_ops,1}', '{int4,bool}');
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select * from pg_get_object_address('operator of access method', '{btree,integer_ops,99}', '{int4,int4}');
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select * from pg_get_object_address('function of access method', '{btree,integer_ops,1}', '{int4,bool}');
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select * from pg_get_object_address('function of access method', '{btree,integer_ops,99}', '{int4,int4}');
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DO $$
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DECLARE
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objtype text;
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names text[];
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args text[];
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BEGIN
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FOR objtype IN VALUES
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('table'), ('index'), ('sequence'), ('view'),
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('materialized view'), ('foreign table'),
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('table column'), ('foreign table column'),
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('aggregate'), ('function'), ('procedure'), ('type'), ('cast'),
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('table constraint'), ('domain constraint'), ('conversion'), ('default value'),
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('operator'), ('operator class'), ('operator family'), ('rule'), ('trigger'),
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('text search parser'), ('text search dictionary'),
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('text search template'), ('text search configuration'),
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('policy'), ('user mapping'), ('default acl'), ('transform'),
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('operator of access method'), ('function of access method'),
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('publication relation')
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LOOP
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FOR names IN VALUES ('{eins}'), ('{addr_nsp, zwei}'), ('{eins, zwei, drei}')
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LOOP
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FOR args IN VALUES ('{}'), ('{integer}')
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LOOP
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BEGIN
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PERFORM pg_get_object_address(objtype, names, args);
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EXCEPTION WHEN OTHERS THEN
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RAISE WARNING 'error for %,%,%: %', objtype, names, args, sqlerrm;
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END;
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END LOOP;
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END LOOP;
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END LOOP;
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END;
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$$;
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-- these object types cannot be qualified names
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SELECT pg_get_object_address('language', '{one}', '{}');
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SELECT pg_get_object_address('language', '{one,two}', '{}');
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SELECT pg_get_object_address('large object', '{123}', '{}');
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SELECT pg_get_object_address('large object', '{123,456}', '{}');
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SELECT pg_get_object_address('large object', '{blargh}', '{}');
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SELECT pg_get_object_address('schema', '{one}', '{}');
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SELECT pg_get_object_address('schema', '{one,two}', '{}');
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SELECT pg_get_object_address('role', '{one}', '{}');
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SELECT pg_get_object_address('role', '{one,two}', '{}');
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SELECT pg_get_object_address('database', '{one}', '{}');
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SELECT pg_get_object_address('database', '{one,two}', '{}');
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SELECT pg_get_object_address('tablespace', '{one}', '{}');
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SELECT pg_get_object_address('tablespace', '{one,two}', '{}');
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SELECT pg_get_object_address('foreign-data wrapper', '{one}', '{}');
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SELECT pg_get_object_address('foreign-data wrapper', '{one,two}', '{}');
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SELECT pg_get_object_address('server', '{one}', '{}');
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SELECT pg_get_object_address('server', '{one,two}', '{}');
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SELECT pg_get_object_address('extension', '{one}', '{}');
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SELECT pg_get_object_address('extension', '{one,two}', '{}');
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SELECT pg_get_object_address('event trigger', '{one}', '{}');
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SELECT pg_get_object_address('event trigger', '{one,two}', '{}');
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SELECT pg_get_object_address('access method', '{one}', '{}');
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SELECT pg_get_object_address('access method', '{one,two}', '{}');
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SELECT pg_get_object_address('publication', '{one}', '{}');
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SELECT pg_get_object_address('publication', '{one,two}', '{}');
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SELECT pg_get_object_address('subscription', '{one}', '{}');
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SELECT pg_get_object_address('subscription', '{one,two}', '{}');
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-- test successful cases
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WITH objects (type, name, args) AS (VALUES
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('table', '{addr_nsp, gentable}'::text[], '{}'::text[]),
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('table', '{addr_nsp, parttable}'::text[], '{}'::text[]),
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('index', '{addr_nsp, gentable_pkey}', '{}'),
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('index', '{addr_nsp, parttable_pkey}', '{}'),
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('sequence', '{addr_nsp, gentable_a_seq}', '{}'),
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-- toast table
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('view', '{addr_nsp, genview}', '{}'),
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('materialized view', '{addr_nsp, genmatview}', '{}'),
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('foreign table', '{addr_nsp, genftable}', '{}'),
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('table column', '{addr_nsp, gentable, b}', '{}'),
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('foreign table column', '{addr_nsp, genftable, a}', '{}'),
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('aggregate', '{addr_nsp, genaggr}', '{int4}'),
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('function', '{pg_catalog, pg_identify_object}', '{pg_catalog.oid, pg_catalog.oid, int4}'),
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('procedure', '{addr_nsp, proc}', '{int4}'),
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('type', '{pg_catalog._int4}', '{}'),
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('type', '{addr_nsp.gendomain}', '{}'),
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('type', '{addr_nsp.gencomptype}', '{}'),
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('type', '{addr_nsp.genenum}', '{}'),
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('cast', '{int8}', '{int4}'),
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('collation', '{default}', '{}'),
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('table constraint', '{addr_nsp, gentable, a_chk}', '{}'),
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('domain constraint', '{addr_nsp.gendomain}', '{domconstr}'),
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('conversion', '{pg_catalog, koi8_r_to_mic}', '{}'),
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('default value', '{addr_nsp, gentable, b}', '{}'),
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('language', '{plpgsql}', '{}'),
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-- large object
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('operator', '{+}', '{int4, int4}'),
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('operator class', '{btree, int4_ops}', '{}'),
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('operator family', '{btree, integer_ops}', '{}'),
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('operator of access method', '{btree,integer_ops,1}', '{integer,integer}'),
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('function of access method', '{btree,integer_ops,2}', '{integer,integer}'),
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('rule', '{addr_nsp, genview, _RETURN}', '{}'),
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('trigger', '{addr_nsp, gentable, t}', '{}'),
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('schema', '{addr_nsp}', '{}'),
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('text search parser', '{addr_ts_prs}', '{}'),
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('text search dictionary', '{addr_ts_dict}', '{}'),
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('text search template', '{addr_ts_temp}', '{}'),
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('text search configuration', '{addr_ts_conf}', '{}'),
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('role', '{regress_addr_user}', '{}'),
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-- database
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-- tablespace
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('foreign-data wrapper', '{addr_fdw}', '{}'),
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('server', '{addr_fserv}', '{}'),
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('user mapping', '{regress_addr_user}', '{integer}'),
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('default acl', '{regress_addr_user,public}', '{r}'),
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('default acl', '{regress_addr_user}', '{r}'),
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-- extension
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-- event trigger
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('policy', '{addr_nsp, gentable, genpol}', '{}'),
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('transform', '{int}', '{sql}'),
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('access method', '{btree}', '{}'),
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('publication', '{addr_pub}', '{}'),
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('publication relation', '{addr_nsp, gentable}', '{addr_pub}'),
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('subscription', '{regress_addr_sub}', '{}'),
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('statistics object', '{addr_nsp, gentable_stat}', '{}')
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)
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SELECT (pg_identify_object(addr1.classid, addr1.objid, addr1.objsubid)).*,
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-- test roundtrip through pg_identify_object_as_address
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ROW(pg_identify_object(addr1.classid, addr1.objid, addr1.objsubid)) =
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ROW(pg_identify_object(addr2.classid, addr2.objid, addr2.objsubid))
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FROM objects, pg_get_object_address(type, name, args) addr1,
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pg_identify_object_as_address(classid, objid, objsubid) ioa(typ,nms,args),
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pg_get_object_address(typ, nms, ioa.args) as addr2
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ORDER BY addr1.classid, addr1.objid, addr1.objsubid;
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---
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--- Cleanup resources
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---
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DROP FOREIGN DATA WRAPPER addr_fdw CASCADE;
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DROP PUBLICATION addr_pub;
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DROP SUBSCRIPTION regress_addr_sub;
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DROP SCHEMA addr_nsp CASCADE;
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DROP OWNED BY regress_addr_user;
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DROP USER regress_addr_user;
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--
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-- Checks for invalid objects
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--
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-- Make sure that NULL handling is correct.
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\pset null 'NULL'
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-- Temporarily disable fancy output, so as future additions never create
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-- a large amount of diffs.
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\a\t
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-- Keep this list in the same order as getObjectIdentityParts()
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-- in objectaddress.c.
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WITH objects (classid, objid, objsubid) AS (VALUES
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('pg_class'::regclass, 0, 0), -- no relation
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('pg_class'::regclass, 'pg_class'::regclass, 100), -- no column for relation
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('pg_proc'::regclass, 0, 0), -- no function
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('pg_type'::regclass, 0, 0), -- no type
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('pg_cast'::regclass, 0, 0), -- no cast
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('pg_collation'::regclass, 0, 0), -- no collation
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('pg_constraint'::regclass, 0, 0), -- no constraint
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('pg_conversion'::regclass, 0, 0), -- no conversion
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('pg_attrdef'::regclass, 0, 0), -- no default attribute
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('pg_language'::regclass, 0, 0), -- no language
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('pg_largeobject'::regclass, 0, 0), -- no large object, no error
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('pg_operator'::regclass, 0, 0), -- no operator
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('pg_opclass'::regclass, 0, 0), -- no opclass, no need to check for no access method
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('pg_opfamily'::regclass, 0, 0), -- no opfamily
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('pg_am'::regclass, 0, 0), -- no access method
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('pg_amop'::regclass, 0, 0), -- no AM operator
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('pg_amproc'::regclass, 0, 0), -- no AM proc
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('pg_rewrite'::regclass, 0, 0), -- no rewrite
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('pg_trigger'::regclass, 0, 0), -- no trigger
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('pg_namespace'::regclass, 0, 0), -- no schema
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('pg_statistic_ext'::regclass, 0, 0), -- no statistics
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('pg_ts_parser'::regclass, 0, 0), -- no TS parser
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('pg_ts_dict'::regclass, 0, 0), -- no TS dictionnary
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('pg_ts_template'::regclass, 0, 0), -- no TS template
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('pg_ts_config'::regclass, 0, 0), -- no TS configuration
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('pg_authid'::regclass, 0, 0), -- no role
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('pg_database'::regclass, 0, 0), -- no database
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('pg_tablespace'::regclass, 0, 0), -- no tablespace
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('pg_foreign_data_wrapper'::regclass, 0, 0), -- no FDW
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('pg_foreign_server'::regclass, 0, 0), -- no server
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('pg_user_mapping'::regclass, 0, 0), -- no user mapping
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('pg_default_acl'::regclass, 0, 0), -- no default ACL
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('pg_extension'::regclass, 0, 0), -- no extension
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('pg_event_trigger'::regclass, 0, 0), -- no event trigger
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('pg_policy'::regclass, 0, 0), -- no policy
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('pg_publication'::regclass, 0, 0), -- no publication
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('pg_publication_rel'::regclass, 0, 0), -- no publication relation
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('pg_subscription'::regclass, 0, 0), -- no subscription
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('pg_transform'::regclass, 0, 0) -- no transformation
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)
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SELECT ROW(pg_identify_object(objects.classid, objects.objid, objects.objsubid))
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AS ident,
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ROW(pg_identify_object_as_address(objects.classid, objects.objid, objects.objsubid))
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AS addr,
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pg_describe_object(objects.classid, objects.objid, objects.objsubid)
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AS descr
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FROM objects
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ORDER BY objects.classid, objects.objid, objects.objsubid;
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-- restore normal output mode
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\a\t
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