Question

定义

SHOW SHADOW shadowRule | RULES [FROM schemaName]

SHOW SHADOW TABLE RULES [FROM schemaName]

SHOW SHADOW ALGORITHMS [FROM schemaName]

shadowRule: 
    RULE ruleName

• 支持查询所有影子规则和指定表查询
• 支持查询所有表规则
• 支持查询所有影子算法

说明

Shadow Rule

列	说明
rule_name	规则名称
source_name	源数据库
shadow_name	影子数据库
shadow_table	影子表

Shadow Table Rule

列	说明
shadow_table	影子表
shadow_algorithm_name	影子算法名称

Shadow Algorithms

列	说明
shadow_algorithm_name	影子算法名称
type	算法类型
props	算法参数

示例

SHOW SHADOW RULES

mysql> show shadow rules;
+--------------------+-------------+-------------+--------------+
| rule_name          | source_name | shadow_name | shadow_table |
+--------------------+-------------+-------------+--------------+
| shadow_rule_1      | ds_1        | ds_shadow_1 | t_order      |
| shadow_rule_2      | ds_2        | ds_shadow_2 | t_order_item |
+--------------------+-------------+-------------+--------------+
2 rows in set (0.02 sec)

SHOW SHADOW RULE ruleName

mysql> show shadow rule shadow_rule_1;
+------------------+-------------+-------------+--------------+
| rule_name        | source_name | shadow_name | shadow_table |
+------------------+-------------+-------------+--------------+
| shadow_rule_1    | ds_1        | ds_shadow_1 | t_order      |
+------------------+-------------+-------------+--------------+
1 rows in set (0.01 sec)

SHOW SHADOW TABLE RULES

mysql> show shadow table rules;
+--------------+--------------------------------------------------------------------------------+
| shadow_table | shadow_algorithm_name                                                          |
+--------------+--------------------------------------------------------------------------------+
| t_order_1    | user_id_match_algorithm,simple_note_algorithm_1                                |  
+--------------+--------------------------------------------------------------------------------+
1 rows in set (0.01 sec)

SHOW SHADOW ALGORITHMS

mysql> show shadow algorithms;
+-------------------------+--------------------+-------------------------------------------+
| shadow_algorithm_name   | type               | props                                     |
+-------------------------+--------------------+-------------------------------------------+
| user_id_match_algorithm | COLUMN_REGEX_MATCH | operation=insert,column=user_id,regex=[1] |
| simple_note_algorithm_1 | SIMPLE_NOTE        | shadow=true,foo=bar                       |
+-------------------------+--------------------+-------------------------------------------+
2 rows in set (0.01 sec)