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Create a "PUBLIC" user mapping

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This commit is contained in:
Rafa de la Torre 2019-07-12 16:23:34 +02:00
parent c58a084102
commit 99e92e2505
1 changed files with 7 additions and 5 deletions
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12
scripts-available/CDB_ForeignTable.sql
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@ -207,16 +207,18 @@ BEGIN
EXECUTE format('ALTER SERVER %I OWNER TO %I', fdw_name, fdw_name);
-- Create user mapping
IF NOT EXISTS ( SELECT * FROM pg_user_mappings WHERE srvname = fdw_name AND usename = fdw_name ) THEN
EXECUTE FORMAT ('CREATE USER MAPPING FOR %I SERVER %I', fdw_name, fdw_name);
-- NOTE: we use a PUBLIC user mapping but control access to the SERVER
-- 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_name AND usename = 'public' ) THEN
EXECUTE FORMAT ('CREATE USER MAPPING FOR public SERVER %I', fdw_name);
END IF;
-- Update user mapping settings
FOR option IN SELECT o.key, o.value from lateral json_each_text(config->'user_mapping') o LOOP
IF NOT EXISTS (WITH a AS (select split_part(unnest(umoptions), '=', 1) as options from pg_user_mappings WHERE srvname = fdw_name AND usename = fdw_name) SELECT * from a where options = option.key) THEN
EXECUTE FORMAT('ALTER USER MAPPING FOR %I SERVER %I OPTIONS (ADD %I %L)', fdw_name, fdw_name, option.key, option.value);
IF NOT EXISTS (WITH a AS (select split_part(unnest(umoptions), '=', 1) as options from pg_user_mappings WHERE srvname = fdw_name AND usename = 'public') SELECT * from a where options = option.key) THEN
EXECUTE FORMAT('ALTER USER MAPPING FOR PUBLIC SERVER %I OPTIONS (ADD %I %L)', fdw_name, option.key, option.value);
ELSE
EXECUTE FORMAT('ALTER USER MAPPING FOR %I SERVER %I OPTIONS (SET %I %L)', fdw_name, fdw_name, option.key, option.value);
EXECUTE FORMAT('ALTER USER MAPPING FOR PUBLIC SERVER %I OPTIONS (SET %I %L)', fdw_name, option.key, option.value);
END IF;
END LOOP;