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Rename CDB_FDW_Create to CDB_FDW_Setup, formatting fixes

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pull/195/head
Alejandro Martínez 9 years ago
parent d7b560324a
commit a9b9f1ff6c
1 changed files with 36 additions and 48 deletions
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84
scripts-available/CDB_ForeignTable.sql
Unescape View File

@ -4,7 +4,7 @@
-- All the FDW settings are read from the `cdb_conf.fdws` entry json file.
---------------------------
CREATE OR REPLACE FUNCTION cartodb._CDB_Create_FDW(name text, config json)
CREATE OR REPLACE FUNCTION cartodb._CDB_Setup_FDW(fdw_name text, config json)
RETURNS void
AS $$
DECLARE
@ -12,55 +12,49 @@ DECLARE
option record;
org_role text;
BEGIN
IF NOT EXISTS ( SELECT * FROM pg_extension WHERE extname = 'postgres_fdw')
THEN
-- This function tries to be as idempotent as possible, by not creating anything more than once
-- (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;
END IF;
-- This function is idempotent
-- Create FDW first if it does not exist
IF NOT EXISTS ( SELECT * FROM pg_foreign_server WHERE srvname = name)
IF NOT EXISTS ( SELECT * FROM pg_foreign_server WHERE srvname = fdw_name)
THEN
EXECUTE FORMAT('CREATE SERVER %I FOREIGN DATA WRAPPER postgres_fdw ',
name);
EXECUTE FORMAT('CREATE SERVER %I FOREIGN DATA WRAPPER postgres_fdw', fdw_name);
END IF;
-- Set FDW settings
FOR row IN SELECT p.key, p.value from lateral json_each_text(config->'server') p
LOOP
IF NOT EXISTS (WITH a AS (select split_part(unnest(srvoptions), '=', 1) as options from pg_foreign_server where srvname=name) SELECT * from a where options = row.key)
IF NOT EXISTS (WITH a AS (select split_part(unnest(srvoptions), '=', 1) as options from pg_foreign_server where srvname=fdw_name) SELECT * from a where options = row.key)
THEN
EXECUTE FORMAT('ALTER SERVER %I OPTIONS (ADD %I %L)', name, row.key, row.value);
EXECUTE FORMAT('ALTER SERVER %I OPTIONS (ADD %I %L)', fdw_name, row.key, row.value);
ELSE
EXECUTE FORMAT('ALTER SERVER %I OPTIONS (SET %I %L)', name, row.key, row.value);
EXECUTE FORMAT('ALTER SERVER %I OPTIONS (SET %I %L)', fdw_name, row.key, row.value);
END IF;
END LOOP;
-- Create user mappings
FOR row IN SELECT p.key, p.value from lateral json_each(config->'users') p
LOOP
FOR row IN SELECT p.key, p.value from lateral json_each(config->'users') p LOOP
-- Check if entry on pg_user_mappings exists
IF NOT EXISTS ( SELECT * FROM pg_user_mappings WHERE srvname = name AND usename = row.key )
THEN
EXECUTE FORMAT ('CREATE USER MAPPING FOR %I SERVER %I', row.key, name);
IF NOT EXISTS ( SELECT * FROM pg_user_mappings WHERE srvname = name AND usename = row.key ) THEN
EXECUTE FORMAT ('CREATE USER MAPPING FOR %I SERVER %I', row.key, fdw_name);
END IF;
-- Update user mapping settings
FOR option IN SELECT o.key, o.value from lateral json_each_text(row.value) o
LOOP
IF NOT EXISTS (WITH a AS (select split_part(unnest(umoptions), '=', 1) as options from pg_user_mappings WHERE srvname = name AND usename = row.key) SELECT * from a where options = option.key)
THEN
EXECUTE FORMAT('ALTER USER MAPPING FOR %I SERVER %I OPTIONS (ADD %I %L)', row.key, name, option.key, option.value);
FOR option IN SELECT o.key, o.value from lateral json_each_text(row.value) o LOOP
IF NOT EXISTS (WITH a AS (select split_part(unnest(umoptions), '=', 1) as options from pg_user_mappings WHERE srvname = name AND usename = row.key) SELECT * from a where options = option.key) THEN
EXECUTE FORMAT('ALTER USER MAPPING FOR %I SERVER %I OPTIONS (ADD %I %L)', row.key, fdw_name, option.key, option.value);
ELSE
EXECUTE FORMAT('ALTER USER MAPPING FOR %I SERVER %I OPTIONS (SET %I %L)', row.key, name, option.key, option.value);
EXECUTE FORMAT('ALTER USER MAPPING FOR %I SERVER %I OPTIONS (SET %I %L)', row.key, fdw_name, option.key, option.value);
END IF;
END LOOP;
END LOOP;
-- Create schema if it does not exist.
IF NOT EXISTS ( SELECT * from pg_namespace WHERE nspname=name)
THEN
EXECUTE FORMAT ('CREATE SCHEMA %I', name);
IF NOT EXISTS ( SELECT * from pg_namespace WHERE nspname=fdw_name) THEN
EXECUTE FORMAT ('CREATE SCHEMA %I', fdw_name);
END IF;
-- Give the organization role usage permisions over the schema
@ -68,55 +62,49 @@ BEGIN
EXECUTE FORMAT ('GRANT USAGE ON SCHEMA %I TO %I', name, org_role);
-- Bring here the remote cdb_tablemetadata
IF NOT EXISTS ( SELECT * FROM PG_CLASS WHERE relnamespace = (SELECT oid FROM pg_namespace WHERE nspname='do') and relname='cdb_tablemetadata')
THEN
EXECUTE FORMAT ('IMPORT FOREIGN SCHEMA cartodb LIMIT TO (cdb_tablemetadata) FROM SERVER %I INTO %I;', name, name, name);
IF NOT EXISTS ( SELECT * FROM PG_CLASS WHERE relnamespace = (SELECT oid FROM pg_namespace WHERE nspname='do') and relname='cdb_tablemetadata') THEN
EXECUTE FORMAT ('IMPORT FOREIGN SCHEMA cartodb LIMIT TO (cdb_tablemetadata) FROM SERVER %I INTO %I;', fdw_name, fdw_name, fdw_name);
END IF;
EXECUTE FORMAT ('GRANT SELECT ON %I.cdb_tablemetadata TO %I', name, org_role);
EXECUTE FORMAT ('GRANT SELECT ON %I.cdb_tablemetadata TO %I', fdw_name, org_role);
END
$$
LANGUAGE PLPGSQL;
CREATE OR REPLACE FUNCTION cartodb._CDB_Create_FDWS()
CREATE OR REPLACE FUNCTION cartodb._CDB_Setup_FDWS()
RETURNS VOID AS
$$
DECLARE
row record;
BEGIN
FOR row IN SELECT p.key, p.value from lateral json_each(cartodb.CDB_Conf_GetConf('fdws')) p
LOOP
EXECUTE 'SELECT cartodb._CDB_Create_FDW($1, $2)' USING row.key, row.value;
FOR row IN SELECT p.key, p.value from lateral json_each(cartodb.CDB_Conf_GetConf('fdws')) p LOOP
EXECUTE 'SELECT cartodb._CDB_Setup_FDW($1, $2)' USING row.key, row.value;
END LOOP;
END
$$
LANGUAGE PLPGSQL;
$$
LANGUAGE PLPGSQL;
CREATE OR REPLACE FUNCTION cartodb._CDB_Create_FDW(name text)
CREATE OR REPLACE FUNCTION cartodb._CDB_Setup_FDW(fdw_name text)
RETURNS void AS
$BODY$
DECLARE
config json;
BEGIN
SELECT p.value FROM LATERAL json_each(cartodb.CDB_Conf_GetConf('fdws')) p WHERE p.key = name INTO config;
EXECUTE 'SELECT cartodb._CDB_Create_FDW($1, $2)' USING name, config;
SELECT p.value FROM LATERAL json_each(cartodb.CDB_Conf_GetConf('fdws')) p WHERE p.key = fdw_name INTO config;
EXECUTE 'SELECT cartodb._CDB_Setup_FDW($1, $2)' USING fdw_name, config;
END
$BODY$
LANGUAGE plpgsql VOLATILE
SECURITY DEFINER;
LANGUAGE plpgsql VOLATILE;
CREATE OR REPLACE FUNCTION cartodb.CDB_Add_Remote_Table(source text, table_name text)
RETURNS void AS
RETURNS void AS
$$
BEGIN
PERFORM cartodb._CDB_Create_FDW(source);
EXECUTE FORMAT ('IMPORT FOREIGN SCHEMA %I LIMIT TO (%I) FROM SERVER %I INTO %I;', source, table_name, source, source);
--- Grant SELECT to publicuser
EXECUTE FORMAT ('GRANT SELECT ON %I.%I TO publicuser;', source, table_name);
PERFORM cartodb._CDB_Setup_FDW(source);
EXECUTE FORMAT ('IMPORT FOREIGN SCHEMA %I LIMIT TO (%I) FROM SERVER %I INTO %I;', source, table_name, source, source);
--- Grant SELECT to publicuser
EXECUTE FORMAT ('GRANT SELECT ON %I.%I TO publicuser;', source, table_name);
END
$$
LANGUAGE plpgsql
security definer;
LANGUAGE plpgsql;

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