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plugin_system - Functional Specification

Version: v1.2.3 | Status: Active | Last Updated: March 2026

Purpose

Enables dynamic extension of the platform. It handles plugin discovery, loading, validation, and lifecycle management.

Design Principles

  • Isolation: Plugins should not crash the host.
  • Security: Strict validation of plugin metadata and code (PluginValidator).

Functional Requirements

  1. Discovery: Find plugins in specified directories.
  2. Lifecycle: Load, Initialize, Shutdown hooks.
  3. Registry: Maintain database of installed plugins.

Interface Contracts

  • PluginManager: Central coordinator for discovery, validation, and loading.
  • PluginRegistry: Manages registered plugins (now uses register() instead of register_plugin()).
  • PluginValidator: Security and metadata validation (now returns unified ValidationResult objects with a .valid attribute).
  • Plugin: Base class for all extensions.

Navigation

Detailed Architecture and Implementation

The implementation follows the Unified Streamline principles (v0.1.0), removing backward compatibility aliases in favor of a modern, standardized API.

Design Principles

  1. Strict Modularity: Each component is isolated and communicates via well-defined APIs.
  2. Security-First: Mandatory validation via PluginValidator before loading.
  3. Performance Optimization: Implementation leverages lazy loading and intelligent caching.
  4. API Consistency: Unified return types (e.g., ValidationResult) across all validation methods.

Technical Implementation

The codebase utilizes Python 3.10+ dataclasses and type hinting. Interaction patterns are documented in the corresponding AGENTS.md and SPEC.md files.

Testing

uv run python -m pytest src/codomyrmex/tests/ -k plugin_system -v