72 lines
3.7 KiB
SQL
72 lines
3.7 KiB
SQL
-- =============================================================================
|
||
-- FDW 跨库映射（在 zqyy_app 中执行）
|
||
-- 生成日期：2026-03-15
|
||
-- 来源：db/fdw/setup_fdw.sql
|
||
-- =============================================================================
|
||
|
||
-- =============================================================================
|
||
-- FDW 映射配置（生产环境）— 在 zqyy_app 数据库中执行
|
||
-- 用途：通过 postgres_fdw 将 etl_feiqiu.app schema 只读映射到 zqyy_app，
|
||
-- 使业务后端无需直接连接 ETL 数据库即可读取汇总/维度数据。
|
||
-- 前提：etl_feiqiu 数据库已部署 app schema 及 app_reader 角色（见 app.sql）
|
||
-- 测试环境版本：setup_fdw_test.sql（指向 test_etl_feiqiu / test_zqyy_app）
|
||
-- Requirements: 8.3, 8.4, 8.5
|
||
-- =============================================================================
|
||
|
||
-- -----------------------------------------------------------------------------
|
||
-- 1. 安装 postgres_fdw 扩展
|
||
-- -----------------------------------------------------------------------------
|
||
CREATE EXTENSION IF NOT EXISTS postgres_fdw;
|
||
|
||
-- -----------------------------------------------------------------------------
|
||
-- 2. 创建外部服务器（指向 etl_feiqiu 数据库）
|
||
-- 部署时按实际环境替换 host / port
|
||
-- -----------------------------------------------------------------------------
|
||
CREATE SERVER IF NOT EXISTS etl_feiqiu_server
|
||
FOREIGN DATA WRAPPER postgres_fdw
|
||
OPTIONS (host 'localhost', dbname 'etl_feiqiu', port '5432');
|
||
|
||
-- -----------------------------------------------------------------------------
|
||
-- 3. 创建用户映射（只读角色）
|
||
-- app_user = zqyy_app 侧的应用连接角色
|
||
-- app_reader = etl_feiqiu 侧的只读角色（在 app.sql 中已创建）
|
||
-- 密码占位符 '***'，部署时替换为真实凭据
|
||
-- -----------------------------------------------------------------------------
|
||
CREATE USER MAPPING IF NOT EXISTS FOR app_user
|
||
SERVER etl_feiqiu_server
|
||
OPTIONS (user 'app_reader', password '***');
|
||
|
||
-- -----------------------------------------------------------------------------
|
||
-- 4. 创建目标 schema（存放外部表）
|
||
-- -----------------------------------------------------------------------------
|
||
CREATE SCHEMA IF NOT EXISTS fdw_etl;
|
||
|
||
-- -----------------------------------------------------------------------------
|
||
-- 5. 导入 etl_feiqiu.app schema 的所有外部表到 fdw_etl
|
||
-- 映射为只读，zqyy_app 不存储 ETL 数据副本（Requirements 8.4）
|
||
-- -----------------------------------------------------------------------------
|
||
IMPORT FOREIGN SCHEMA app
|
||
FROM SERVER etl_feiqiu_server
|
||
INTO fdw_etl;
|
||
|
||
-- -----------------------------------------------------------------------------
|
||
-- 6. 授权：允许 app_user 访问 fdw_etl schema 及其外部表
|
||
-- -----------------------------------------------------------------------------
|
||
GRANT USAGE ON SCHEMA fdw_etl TO app_user;
|
||
GRANT SELECT ON ALL TABLES IN SCHEMA fdw_etl TO app_user;
|
||
|
||
-- 未来新导入的外部表自动授权
|
||
ALTER DEFAULT PRIVILEGES IN SCHEMA fdw_etl GRANT SELECT ON TABLES TO app_user;
|
||
|
||
|
||
-- =============================================================================
|
||
-- 回滚脚本（按逆序执行）
|
||
-- =============================================================================
|
||
-- ALTER DEFAULT PRIVILEGES IN SCHEMA fdw_etl REVOKE SELECT ON TABLES FROM app_user;
|
||
-- REVOKE SELECT ON ALL TABLES IN SCHEMA fdw_etl FROM app_user;
|
||
-- REVOKE USAGE ON SCHEMA fdw_etl FROM app_user;
|
||
-- DROP SCHEMA IF EXISTS fdw_etl CASCADE;
|
||
-- DROP USER MAPPING IF EXISTS FOR app_user SERVER etl_feiqiu_server;
|
||
-- DROP SERVER IF EXISTS etl_feiqiu_server CASCADE;
|
||
-- DROP EXTENSION IF EXISTS postgres_fdw;
|