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| title = "P6Spy" | ||
| weight = 6 | ||
| +++ | ||
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| ## 背景信息 | ||
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| ShardingSphere 通过 `org.apache.shardingsphere:shardingsphere-infra-database-p6spy` 模块， | ||
| 对 `com.p6spy.engine.spy.P6SpyDriver` 提供部分支持。 | ||
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| ## 前提条件 | ||
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| 要在 ShardingSphere 的配置文件为 MySQL Server 数据节点使用 P6Spy， 可能的 Maven 依赖关系如下， | ||
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| ```xml | ||
| <dependencies> | ||
| <dependency> | ||
| <groupId>org.apache.shardingsphere</groupId> | ||
| <artifactId>shardingsphere-jdbc</artifactId> | ||
| <version>${shardingsphere.version}</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>p6spy</groupId> | ||
| <artifactId>p6spy</artifactId> | ||
| <version>3.9.1</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>com.mysql</groupId> | ||
| <artifactId>mysql-connector-j</artifactId> | ||
| <version>9.1.0</version> | ||
| </dependency> | ||
| </dependencies> | ||
| ``` | ||
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| ## 配置示例 | ||
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| ### 启动 MySQL Server | ||
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| 编写 Docker Compose 文件来启动 MySQL Server。 | ||
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| ```yaml | ||
| services: | ||
| mysql: | ||
| image: mysql:9.1.0 | ||
| environment: | ||
| MYSQL_ROOT_PASSWORD: example | ||
| volumes: | ||
| - ./mysql/docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d | ||
| ports: | ||
| - "3306:3306" | ||
| ``` | ||
| `./docker-entrypoint-initdb.d` 文件夹包含文件为 `init.sh`，内容如下， | ||
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| ```shell | ||
| #!/bin/bash | ||
| set -e | ||
| mysql -uroot -p"$MYSQL_ROOT_PASSWORD" <<EOSQL | ||
| CREATE DATABASE demo_ds_0; | ||
| CREATE DATABASE demo_ds_1; | ||
| CREATE DATABASE demo_ds_2; | ||
| EOSQL | ||
| for i in "demo_ds_0" "demo_ds_1" "demo_ds_2" | ||
| do | ||
| mysql -uroot -p"$MYSQL_ROOT_PASSWORD" "$i" <<'EOSQL' | ||
| CREATE TABLE IF NOT EXISTS t_order ( | ||
| order_id BIGINT NOT NULL AUTO_INCREMENT, | ||
| order_type INT(11), | ||
| user_id INT NOT NULL, | ||
| address_id BIGINT NOT NULL, | ||
| status VARCHAR(50), | ||
| PRIMARY KEY (order_id) | ||
| ); | ||
| EOSQL | ||
| done | ||
| ``` | ||
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| ### 在业务项目创建 ShardingSphere 数据源 | ||
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| 在业务项目引入前提条件涉及的依赖后，在业务项目的 classpath 上编写 ShardingSphere 数据源的配置文件`demo.yaml`， | ||
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| ```yaml | ||
| dataSources: | ||
| ds_0: | ||
| dataSourceClassName: com.zaxxer.hikari.HikariDataSource | ||
| driverClassName: com.p6spy.engine.spy.P6SpyDriver | ||
| jdbcUrl: jdbc:p6spy:mysql://localhost:3306/demo_ds_0?sslMode=REQUIRED | ||
| username: root | ||
| password: example | ||
| ds_1: | ||
| dataSourceClassName: com.zaxxer.hikari.HikariDataSource | ||
| driverClassName: com.p6spy.engine.spy.P6SpyDriver | ||
| jdbcUrl: jdbc:p6spy:mysql://localhost:3306/demo_ds_1?sslMode=REQUIRED | ||
| username: root | ||
| password: example | ||
| ds_2: | ||
| dataSourceClassName: com.zaxxer.hikari.HikariDataSource | ||
| driverClassName: com.p6spy.engine.spy.P6SpyDriver | ||
| jdbcUrl: jdbc:p6spy:mysql://localhost:3306/demo_ds_2?sslMode=REQUIRED | ||
| username: root | ||
| password: example | ||
| rules: | ||
| - !SHARDING | ||
| tables: | ||
| t_order: | ||
| actualDataNodes: | ||
| keyGenerateStrategy: | ||
| column: order_id | ||
| keyGeneratorName: snowflake | ||
| defaultDatabaseStrategy: | ||
| standard: | ||
| shardingColumn: user_id | ||
| shardingAlgorithmName: inline | ||
| shardingAlgorithms: | ||
| inline: | ||
| type: INLINE | ||
| props: | ||
| algorithm-expression: ds_${user_id % 2} | ||
| keyGenerators: | ||
| snowflake: | ||
| type: SNOWFLAKE | ||
| ``` | ||
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| ### 享受集成 | ||
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| 创建 ShardingSphere 的数据源以享受集成， | ||
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| ```java | ||
| import com.zaxxer.hikari.HikariConfig; | ||
| import com.zaxxer.hikari.HikariDataSource; | ||
| import java.sql.Connection; | ||
| import java.sql.SQLException; | ||
| import java.sql.Statement; | ||
| public class ExampleUtils { | ||
| void test() throws SQLException { | ||
| HikariConfig config = new HikariConfig(); | ||
| config.setJdbcUrl("jdbc:shardingsphere:classpath:demo.yaml"); | ||
| config.setDriverClassName("org.apache.shardingsphere.driver.ShardingSphereDriver"); | ||
| try (HikariDataSource dataSource = new HikariDataSource(config); | ||
| Connection connection = dataSource.getConnection(); | ||
| Statement statement = connection.createStatement()) { | ||
| statement.execute("INSERT INTO t_order (user_id, order_type, address_id, status) VALUES (1, 1, 1, 'INSERT_TEST')"); | ||
| statement.executeQuery("SELECT * FROM t_order"); | ||
| statement.execute("alter table t_order delete where order_id=1"); | ||
| } | ||
| } | ||
| } | ||
| ``` | ||
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| ## 使用限制 | ||
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| 目前仅支持为 MySQL JDBC Driver 配置 P6Spy。 |
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