How can we do error logging in Postgres. I am trying to create a LOG_AND_STOP method which would be generic to the code. I have pasted the code I have written. This code returns no data which is understandable as the error is thrown to the external world.
Can I write the code somehow.
CREATE SCHEMA test
AUTHORIZATION postgres;
CREATE TABLE test.error_log
(
error_desc text
);
CREATE OR REPLACE FUNCTION test.log_and_stop(err_desc text)
RETURNS void AS
$BODY$
Declare
x integer;
begin
begin
insert into test.error_log values (err_desc);
end;
begin
raise exception '%',err_desc;
end;
end;
$BODY$
LANGUAGE 'plpgsql' VOLATILE
COST 100;
ALTER FUNCTION test.log_and_stop(text) OWNER TO postgres;
CREATE OR REPLACE FUNCTION test.f1()
RETURNS void AS
$BODY$
Declare
x integer;
begin
x:=1;
x:=x/0;
exception
when others then
perform test.log_and_stop('error occured in function f1');
end;
$BODY$
LANGUAGE 'plpgsql' VOLATILE
COST 100;
ALTER FUNCTION test.f1() OWNER TO postgres;
select test.f1();
/*----------------------------output-------------------------*/
-- ERROR: error occured in function f1
-- CONTEXT: SQL statement "SELECT test.log_and_stop('error occured in function f1')"
-- PL/pgSQL function "f1" line 8 at PERFORM
--
--
-- ********** Error **********
--
-- ERROR: error occured in function f1
-- SQL state: P0001
-- Context: SQL statement "SELECT test.log_and_stop('error occured in function f1')"
-- PL/pgSQL function "f1" line 8 at PERFORM
/*-------------------------------------------------------------*/
select * from test.error_log; --no data found;
Regards,
Atul Goel
SENIOR DEVELOPER
Global DataPoint
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