PluginManager.md

Plugin Manager

The plugin manager has the following main functionalities:

• Load and initialize plugins
• Initiate pipelines

Load and Initialize Plugins

The plugin manager initializes all plugins with codes given to the plugins connection parameter.

Clean Up Resources

The Aurora Connection Tracker Plugin, Host Monitoring Connection Plugin, and Read/Write Splitting Plugin can have shared resources. The plugin manager handles cleaning up resources that may be shared between connections at the end of an application through the releaseResources method.

Initiate Pipelines

During the initial connection phase, where the plugin manager gets initialized, it initiates the host list provider and the connect pipelines. These two pipelines will set up a host list provider to be used by all the plugins and the initial connection.

All subsequent methods calls will trigger the execute pipeline.

Note

The execute pipeline does not limit to execute methods such as query() or executeQuery(). All methods, such as getCatalog() can trigger the execute pipeline. In other words, the execute pipeline is to execute all kinds of methods.