pluginmodule

PluginModule is a modular software unit that encapsulates functionality designed to be loaded into a host application at runtime. It implements a defined extension interface and may expose one or more extension points that the host can consume to augment or alter behavior without modifying core code.

A typical PluginModule includes metadata such as name, version, author, and compatible API version, often described in a manifest. The module ships with code that implements the required interface and may include resources, configuration, and dependent libraries or scripts needed by the host.

Lifecycle and loading: The host manages a lifecycle for each module, commonly including discovery, loading, initialization, activation, deactivation, and unloading. Hot-reload support allows updates without restarting the entire application where supported.

Discovery and registration: Discovery is usually performed by scanning a plugins directory, reading a manifest, or querying a package registry. During initialization, the module registers its provided services or extension points with the host, enabling other components to bind to them.

Isolation and compatibility: To limit risk, hosts may isolate modules in separate processes or sandboxes, or enforce permissions and resource quotas. API versioning and feature flags help maintain compatibility between the host and plugins.

Implementation approaches: PluginModule loading can use dynamic linking or loading of shared libraries, reflection-based loading in managed runtimes, or embedded scripting. Each approach balances performance, isolation, and portability.

Usage: PluginModule patterns are common in integrated development environments, content management systems, build tools, and browsers, where a core product exposes a plugin ecosystem to extend functionality.