[GitHub] [shardingsphere] baozhalelele commented on issue #21492: Is there any way to add a new datasource to ShardingSphere dynamically so that it could be managed by ShardingSphereDataSource?

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baozhalelele commented on issue #21492:
URL: https://github.com/apache/shardingsphere/issues/21492#issuecomment-1274693328

   Thank you for your kindly answer.
   Finally, I used reflection to update the `ContextManager` and it seemed to work.
   
   For reference：
   ```
   ShardingSphereDataSource shardingSphereDataSource = (ShardingSphereDataSource) dataSource;
   Class<ShardingSphereDataSource> shardingSphereDataSourceClass = ShardingSphereDataSource.class;
   Field field = shardingSphereDataSourceClass.getDeclaredField("contextManager");
   field.setAccessible(true);
   ContextManager contextManager = (ContextManager) field.get(shardingSphereDataSource);
   
   HikariDataSource newHikariDataSource = new HikariDataSource();
   newHikariDataSource.setDriverClassName(tenantDataSource.getDriverClassName());
   // ....
   
   Map<String, DataSource> dataSourceMap = contextManager.getDataSourceMap(SHARDING_LOGIC_SCHEMA);
   dataSourceMap.put(tenantInfo.getTenantName(), newHikariDataSource);
   
   ShardingSphereResource newResource = new ShardingSphereResource(dataSourceMap);
   ShardingSphereDatabase shardingSphereDatabase = contextManager.getMetaDataContexts().getMetaData().getDatabases().get(SHARDING_LOGIC_SCHEMA);
   Class<ShardingSphereDatabase> shardingSphereDatabaseClass = ShardingSphereDatabase.class;
   Field resource = shardingSphereDatabaseClass.getDeclaredField("resource");
   resource.setAccessible(true);
   resource.set(shardingSphereDatabase, newResource);
   
   field.set(shardingSphereDataSource, contextManager);
   ```
   


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