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Add a bunch of RAISE NOTICE's to inform user about progress

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This commit is contained in:
Rafa de la Torre 2019-07-16 17:03:23 +02:00
parent 076207c49c
commit 3c460f1a85
1 changed files with 13 additions and 0 deletions
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13
scripts-available/CDB_ForeignTable.sql
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@ -191,11 +191,13 @@ BEGIN
-- (not even using IF NOT EXIST to avoid throwing warnings)
IF NOT EXISTS ( SELECT * FROM pg_extension WHERE extname = 'postgres_fdw') THEN
CREATE EXTENSION postgres_fdw;
RAISE NOTICE 'Created postgres_fdw extension';
END IF;
-- Create FDW first if it does not exist
IF NOT EXISTS ( SELECT * FROM pg_foreign_server WHERE srvname = fdw_objects_name)
THEN
EXECUTE FORMAT('CREATE SERVER %I FOREIGN DATA WRAPPER postgres_fdw', fdw_objects_name);
RAISE NOTICE 'Created server % using postgres_fdw', fdw_objects_name;
END IF;
-- Set FDW settings
@ -212,6 +214,7 @@ BEGIN
-- Create specific role for this
IF NOT EXISTS ( SELECT 1 FROM pg_roles WHERE rolname = fdw_objects_name) THEN
EXECUTE format('CREATE ROLE %I NOLOGIN', fdw_objects_name);
RAISE NOTICE 'Created special role % to access the correponding FDW', fdw_objects_name;
END IF;
-- Transfer ownership of the server to the fdw role
@ -222,6 +225,7 @@ BEGIN
-- so that we don't need to create a mapping for every user nor store credentials elsewhere
IF NOT EXISTS ( SELECT * FROM pg_user_mappings WHERE srvname = fdw_objects_name AND usename = 'public' ) THEN
EXECUTE FORMAT ('CREATE USER MAPPING FOR public SERVER %I', fdw_objects_name);
RAISE NOTICE 'Created user mapping for accesing foreign server %', fdw_objects_name;
END IF;
-- Update user mapping settings
@ -235,15 +239,19 @@ BEGIN
-- Grant usage on the wrapper and server to the fdw role
EXECUTE FORMAT ('GRANT USAGE ON FOREIGN DATA WRAPPER postgres_fdw TO %I', fdw_objects_name);
RAISE NOTICE 'Granted usage on the postgres_fdw to the role %', fdw_objects_name;
EXECUTE FORMAT ('GRANT USAGE ON FOREIGN SERVER %I TO %I', fdw_objects_name, fdw_objects_name);
RAISE NOTICE 'Granted usage on the foreign server to the role %', fdw_objects_name;
-- Create schema if it does not exist.
IF NOT EXISTS ( SELECT * from pg_namespace WHERE nspname=fdw_objects_name) THEN
EXECUTE FORMAT ('CREATE SCHEMA %I', fdw_objects_name);
RAISE NOTICE 'Created schema % to host foreign tables', fdw_objects_name;
END IF;
-- Give the fdw role ownership over the schema
EXECUTE FORMAT ('ALTER SCHEMA %I OWNER TO %I', fdw_objects_name, fdw_objects_name);
RAISE NOTICE 'Gave ownership on the schema % to %', fdw_objects_name, fdw_objects_name;
-- TODO: Bring here the remote cdb_tablemetadata
END
@ -264,10 +272,15 @@ DECLARE
fdw_objects_name NAME := @extschema@.__CDB_User_FDW_Object_Names(fdw_input_name);
BEGIN
EXECUTE FORMAT ('DROP SCHEMA %I', fdw_objects_name);
RAISE NOTICE 'Dropped schema %', fdw_objects_name;
EXECUTE FORMAT ('DROP USER MAPPING FOR public SERVER %I', fdw_objects_name);
RAISE NOTICE 'Dropped user mapping for server %', fdw_objects_name;
EXECUTE FORMAT ('DROP SERVER %I', fdw_objects_name);
RAISE NOTICE 'Dropped foreign server %', fdw_objects_name;
EXECUTE FORMAT ('REVOKE USAGE ON FOREIGN DATA WRAPPER postgres_fdw FROM %I', fdw_objects_name);
RAISE NOTICE 'Revoked usage on postgres_fdw from %', fdw_objects_name;
EXECUTE FORMAT ('DROP ROLE %I', fdw_objects_name);
RAISE NOTICE 'Dropped role %', fdw_objects_name;
END
$$ LANGUAGE plpgsql VOLATILE PARALLEL UNSAFE;