📋 DOCUMENT STATUS
- Type: Comprehensive Proposal with Implementation Guide
- Status: 🔴 Not Started (0% Complete)
- Approval: ⏳ Pending Review
- Target Timeline: 16-22 weeks (post-approval)
- Last Updated: November 2025
🤖 AI Agent Note: This document is designed to be comprehensive for AI-assisted development. All phases include detailed implementation guidance with code examples.
- Executive Summary
- Related Documentation
- Current State Analysis
- Proposed Architecture
- Implementation Benefits
- Prerequisites
- Implementation Status
- Decision Gates
- Detailed Implementation Phases
- Risk Mitigation
- Success Criteria
- Testing Strategy
This document outlines a comprehensive proposal to evolve the current broker architecture from a static registry-based system to a dynamic plugin architecture. The goal is to create a truly extensible system where brokers can be developed, distributed, and deployed independently while maintaining type safety and backward compatibility.
Key Objectives:
- Enable dynamic broker discovery and loading
- Support independent broker distribution as packages
- Provide plugin isolation and sandboxing
- Implement API versioning for compatibility
- Maintain 100% backward compatibility
- Reduce broker development time by 50%
- Current Broker Architecture - How brokers work today (implemented)
- Architecture Overview - Core system design principles
- Authentication Architecture - Authentication patterns
The current broker architecture uses a static registry system. See ARCHITECTURE_BROKERS.md for complete implementation details.
- ✅ Broker Registry: Central registry for broker management
- ✅ Factory Pattern: Consistent broker creation with dependency injection
- ✅ Interface Contracts: Type-safe service interfaces
- ✅ 3-Layer Architecture: Clear separation of concerns (client/services/repositories)
- ✅ Configuration-Driven: Declarative broker definitions
- ❌ Static Discovery: Hard-coded imports in
registry_setup.py - ❌ Compile-Time Binding: All brokers must be present at build time
- ❌ Manual Registration: New brokers require core code changes
- ❌ No Isolation: Brokers share the same process space without boundaries
- ❌ Version Coupling: No API versioning for broker compatibility
- ❌ Distribution Challenges: Cannot distribute brokers as separate packages
graph TB
subgraph "Plugin System Core"
PM[PluginManager<br/>🔌 Discovery & Lifecycle]
PL[PluginLoader<br/>📦 Dynamic Loading]
PR[PluginRegistry<br/>📋 Plugin Catalog]
PV[PluginValidator<br/>✅ Validation & Compatibility]
PM --> PL
PM --> PR
PM --> PV
end
subgraph "Plugin Discovery"
EP[EntryPoints<br/>🔍 setuptools discovery]
FM[FileManifest<br/>📄 manifest.json scanning]
DR[DirectoryScanner<br/>📂 plugin directories]
EP --> PM
FM --> PM
DR --> PM
end
subgraph "Plugin Types"
BP[BrokerPlugin<br/>🏦 Broker Implementation]
AP[AggregatorPlugin<br/>📊 Custom Aggregators]
VP[ViewPlugin<br/>🌐 UI Extensions]
MP[MiddlewarePlugin<br/>⚙️ Processing Middleware]
end
subgraph "Plugin Metadata"
MAN[Manifest<br/>📋 Plugin Descriptor]
DEP[Dependencies<br/>🔗 Version Requirements]
CAP[Capabilities<br/>🎯 Service Declarations]
MAN --> DEP
MAN --> CAP
end
subgraph "Legacy Integration"
BR[BrokerRegistry<br/>📚 Existing System]
BF[BrokerFactory<br/>🏭 Current Factory]
PA[PluginAdapter<br/>🔄 Legacy Bridge]
BR --> PA
BF --> PA
PA --> PM
end
subgraph "API Versioning"
V1[v1.0 API<br/>🔢 Current Interface]
V2[v2.0 API<br/>🚀 Future Interface]
VC[VersionChecker<br/>⚖️ Compatibility]
V1 --> VC
V2 --> VC
VC --> PV
end
BP --> MAN
AP --> MAN
VP --> MAN
MP --> MAN
Example plugin_manifest.json structure:
{
"plugin": {
"name": "degiro-broker",
"version": "1.0.0",
"type": "broker",
"display_name": "DeGiro Broker Plugin",
"description": "DeGiro broker integration for Stonks Overwatch",
"author": "Stonks Overwatch Team",
"license": "MIT",
"homepage": "https://example.com/degiro-plugin"
},
"api": {
"min_version": "1.0.0",
"max_version": "2.0.0",
"interfaces": [
"BrokerServiceInterface",
"PortfolioServiceInterface",
"TransactionServiceInterface"
]
},
"dependencies": {
"python": ">=3.11",
"stonks-overwatch-core": ">=2.0.0,<3.0.0",
"degiro-connector": ">=3.0.0"
},
"capabilities": {
"services": [
"portfolio",
"trade",
"deposit",
"dividend",
"fee",
"account"
],
"features": [
"real_time_data",
"historical_data",
"order_execution"
],
"supported_markets": ["XAMS", "XNYS", "XNAS"],
"supported_currencies": ["EUR", "USD", "GBP"]
},
"configuration": {
"config_class": "degiro.config.DegiroConfig",
"required_credentials": [
"username",
"password",
"int_account"
],
"optional_settings": [
"use_2fa",
"session_timeout"
]
},
"services": {
"portfolio": "degiro.services.PortfolioService",
"trade": "degiro.services.TradeService",
"deposit": "degiro.services.DepositService",
"dividend": "degiro.services.DividendService",
"fee": "degiro.services.FeeService",
"account": "degiro.services.AccountService"
},
"entry_points": {
"main": "degiro.plugin:DegiroPlugin",
"config": "degiro.config:DegiroConfig"
}
}| Aspect | Current System | Proposed Plugin System |
|---|---|---|
| Broker Discovery | Hard-coded imports | Dynamic entry points + file system |
| Installation | Modify core code | Install package or drop in plugins/ |
| Distribution | Part of core | Independent packages |
| Versioning | Coupled to core | Independent versions with API compatibility |
| Isolation | Shared process | Sandboxed execution |
| Hot Reload | Requires restart | Dynamic load/unload |
| Third-Party Dev | Not supported | Fully supported |
| Time to Add Broker | 2-4 hours + core PR | 1-2 hours, no core changes |
- 🚀 Faster Development: Independent broker development and testing
- 🔄 Hot Reloading: Update brokers without restarting the application
- 📦 Distribution: Distribute brokers as separate packages
- 🧪 Testing: Isolated testing environment for each broker
- 📚 Documentation: Auto-generated API documentation
- 🔌 Plug & Play: Easy installation of new brokers
- 🎛️ Configurability: Fine-grained control over broker features
- 🔧 Customization: Custom broker implementations for specific needs
- 📊 Monitoring: Real-time plugin health and performance monitoring
- 🔄 Updates: Independent broker updates without core changes
- 🏗️ Scalability: Better resource isolation and management
- 🛡️ Stability: Plugin failures don't crash the entire system
- 🔄 Maintainability: Clear separation of concerns
- 🚀 Performance: Lazy loading and resource optimization
- 🔒 Security: Sandboxed plugin execution
- ✅ Reduced Core Changes: 90% reduction in core code changes for new brokers
- ✅ Development Speed: 50% faster broker development cycle
- ✅ System Stability: 99.9% uptime with plugin isolation
- ✅ Community Growth: Enable third-party broker development
- ✅ Maintenance Cost: 60% reduction in maintenance overhead
Before starting Phase 1, ensure the following prerequisites are met:
- Current broker architecture is fully documented (see ARCHITECTURE_BROKERS.md) ✅ Complete
- Plugin architecture proposal has been reviewed and approved
- Success criteria and metrics are defined and agreed upon
- Risk mitigation strategies are documented
- Development team has capacity for 16-22 weeks of focused work
- 2-3 senior developers assigned to the project
- Code review resources allocated
- QA/Testing resources available
- All existing brokers are working and tested ✅ Current state
- Current test suite passes with > 80% coverage
- Development environment is stable
- CI/CD pipeline is operational
- Stakeholders have approved the proposal and timeline
- Communication plan established for progress updates
- Rollback plan documented in case of critical issues
Overall Progress: 0% Complete (0/6 phases)
| Phase | Status | Owner | Start Date | Target Date | Actual Date | Progress |
|---|---|---|---|---|---|---|
| Phase 1: Foundation | 🔴 Not Started | TBD | TBD | TBD | - | 0% |
| Phase 2: Plugin Core | 🔴 Not Started | TBD | TBD | TBD | - | 0% |
| Phase 3: Discovery | 🔴 Not Started | TBD | TBD | TBD | - | 0% |
| Phase 4: Lifecycle | 🔴 Not Started | TBD | TBD | TBD | - | 0% |
| Phase 5: Migration | 🔴 Not Started | TBD | TBD | TBD | - | 0% |
| Phase 6: Advanced | 🔴 Not Started | TBD | TBD | TBD | - | 0% |
Legend: 🔴 Not Started | 🟡 In Progress | 🟢 Complete | ⏸️ Blocked |
Must be completed before Phase 1 begins:
-
Approve plugin architecture proposal
- Decision maker: [Name/Role]
- Required by: [Date]
- Status: ⏳ Pending
-
Allocate development resources
- Team size: 2-3 developers
- Duration: 16-22 weeks
- Budget: [Amount]
- Status: ⏳ Pending
-
Define and approve success criteria
- Performance targets: < 5% overhead
- Compatibility: 100% backward compatible
- Testing: 90% code coverage
- Uptime: 99.9% with plugin isolation
- Status: ⏳ Pending
-
Plugin discovery mechanism
- Options: Entry points, file system, or both
- Recommendation: Both for maximum flexibility
- Decision: TBD
-
API versioning strategy
- Semantic versioning for plugin API
- Compatibility matrix maintenance
- Decision: TBD
-
Security/sandboxing approach
- Process isolation vs permission system
- Resource limits and tracking
- Decision: TBD
-
Dependency management
- Virtual environments per plugin
- Shared dependencies with version constraints
- Decision: TBD
Each phase requires sign-off before proceeding to the next:
- Phase 1 Gate: All deliverables complete, tests passing, documentation updated
- Phase 2 Gate: Plugin loading functional, integration tests pass
- Phase 3 Gate: Discovery working, plugins can be found and loaded
- Phase 4 Gate: Lifecycle management stable, health monitoring operational
- Phase 5 Gate: At least one legacy broker successfully migrated
- Phase 6 Gate: All features complete, production-ready
- Establish plugin metadata standards
- Create base plugin interfaces
- Define plugin directory structure
- Set up basic validation framework
File: src/stonks_overwatch/plugins/models.py
from dataclasses import dataclass
from typing import Dict, List, Optional
from enum import Enum
class PluginType(Enum):
BROKER = "broker"
AGGREGATOR = "aggregator"
MIDDLEWARE = "middleware"
VIEW = "view"
@dataclass
class PluginManifest:
"""Standard plugin manifest structure."""
# Basic plugin information
name: str
version: str
type: PluginType
display_name: str
description: str
author: str
license: str
homepage: Optional[str] = None
# API compatibility
min_api_version: str
max_api_version: str
required_interfaces: List[str]
# Dependencies
python_version: str
core_dependencies: Dict[str, str]
plugin_dependencies: Dict[str, str]
# Capabilities
services: List[str]
features: List[str]
supported_markets: List[str]
supported_currencies: List[str]
# Configuration
config_class: str
required_credentials: List[str]
optional_settings: List[str]
# Entry points
service_mappings: Dict[str, str]
main_entry_point: str
config_entry_point: str
@dataclass
class PluginInfo:
"""Runtime plugin information."""
manifest: PluginManifest
path: str
state: str
load_time: Optional[float] = None
error: Optional[str] = None
metrics: Optional[Dict[str, any]] = NoneFile: src/stonks_overwatch/plugins/interfaces.py
from abc import ABC, abstractmethod
from typing import Dict, List, Type, Any
from stonks_overwatch.core.service_types import ServiceType
from stonks_overwatch.config.base_config import BaseConfig
class PluginInterface(ABC):
"""Base interface all plugins must implement."""
@property
@abstractmethod
def manifest(self) -> PluginManifest:
"""Return plugin manifest."""
pass
@abstractmethod
def initialize(self) -> bool:
"""Initialize the plugin. Return True on success."""
pass
@abstractmethod
def shutdown(self) -> bool:
"""Shutdown plugin and cleanup. Return True on success."""
pass
@abstractmethod
def health_check(self) -> Dict[str, Any]:
"""Return plugin health status and metrics."""
pass
class BrokerPluginInterface(PluginInterface):
"""Interface specific to broker plugins."""
@abstractmethod
def get_config_class(self) -> Type[BaseConfig]:
"""Return broker configuration class."""
pass
@abstractmethod
def get_services(self) -> Dict[ServiceType, Type]:
"""Return mapping of service types to implementation classes."""
pass
@abstractmethod
def validate_configuration(self, config: BaseConfig) -> List[str]:
"""Validate configuration. Return list of errors (empty if valid)."""
passsrc/stonks_overwatch/
├── plugins/
│ ├── __init__.py
│ ├── models.py # Plugin data models
│ ├── interfaces.py # Plugin interfaces
│ ├── exceptions.py # Plugin-specific exceptions
│ ├── manager/
│ │ ├── __init__.py
│ │ ├── plugin_manager.py # Core plugin manager
│ │ ├── discovery.py # Plugin discovery logic
│ │ ├── loader.py # Plugin loading logic
│ │ ├── validator.py # Plugin validation
│ │ └── lifecycle.py # Lifecycle management
│ ├── registry/
│ │ ├── __init__.py
│ │ ├── plugin_registry.py # Plugin registry
│ │ └── capabilities.py # Capability management
│ └── utils/
│ ├── __init__.py
│ ├── manifest.py # Manifest parsing
│ ├── dependencies.py # Dependency resolution
│ └── versioning.py # Version compatibilityFile: src/stonks_overwatch/plugins/manager/validator.py
from typing import List, Dict, Any
from stonks_overwatch.plugins.models import PluginManifest, PluginInfo
class ValidationResult:
def __init__(self):
self.is_valid = True
self.errors: List[str] = []
self.warnings: List[str] = []
def add_error(self, message: str):
self.errors.append(message)
self.is_valid = False
def add_warning(self, message: str):
self.warnings.append(message)
class PluginValidator:
"""Validates plugin compatibility and requirements."""
def validate_manifest(self, manifest: PluginManifest) -> ValidationResult:
"""Validate plugin manifest structure and content."""
result = ValidationResult()
# Validate required fields
if not manifest.name:
result.add_error("Plugin name is required")
if not manifest.version:
result.add_error("Plugin version is required")
# Validate version format
if not self._is_valid_version(manifest.version):
result.add_error(f"Invalid version format: {manifest.version}")
# Validate API compatibility
if not self._is_api_compatible(manifest.min_api_version, manifest.max_api_version):
result.add_error("Plugin is not compatible with current API version")
return result
def validate_dependencies(self, manifest: PluginManifest) -> ValidationResult:
"""Validate plugin dependencies are available."""
result = ValidationResult()
# Check Python version
if not self._check_python_version(manifest.python_version):
result.add_error(f"Python version {manifest.python_version} not satisfied")
# Check core dependencies
for dep, version_spec in manifest.core_dependencies.items():
if not self._check_dependency(dep, version_spec):
result.add_error(f"Dependency {dep}{version_spec} not satisfied")
return result
def _is_valid_version(self, version: str) -> bool:
"""Check if version string is valid semantic version."""
# Implementation for semantic version validation
import re
pattern = r'^\d+\.\d+\.\d+$'
return bool(re.match(pattern, version))
def _is_api_compatible(self, min_version: str, max_version: str) -> bool:
"""Check if plugin is compatible with current API version."""
# Implementation for API compatibility check
# Compare with current system API version
return True # Placeholder
def _check_python_version(self, requirement: str) -> bool:
"""Check if Python version requirement is satisfied."""
import sys
from packaging import version, specifiers
current_version = f"{sys.version_info.major}.{sys.version_info.minor}.{sys.version_info.micro}"
spec = specifiers.SpecifierSet(requirement)
return version.parse(current_version) in spec
def _check_dependency(self, package: str, version_spec: str) -> bool:
"""Check if package dependency is satisfied."""
try:
import importlib.metadata
from packaging import version, specifiers
installed_version = importlib.metadata.version(package)
spec = specifiers.SpecifierSet(version_spec)
return version.parse(installed_version) in spec
except importlib.metadata.PackageNotFoundError:
return False- Plugin metadata models and manifest structure
- Base plugin interfaces and abstract classes
- Plugin validation framework
- Plugin directory structure setup
- Unit tests for validation logic
- Documentation for plugin standards
- Implement core plugin management functionality
- Create plugin registry and lifecycle management
- Build plugin loading and unloading mechanisms
- Establish error handling and logging
File: src/stonks_overwatch/plugins/registry/plugin_registry.py
from typing import Dict, List, Optional
from stonks_overwatch.plugins.models import PluginInfo, PluginManifest
from stonks_overwatch.plugins.interfaces import PluginInterface
class PluginRegistry:
"""Central registry for managing discovered and loaded plugins."""
def __init__(self):
self._discovered_plugins: Dict[str, PluginInfo] = {}
self._loaded_plugins: Dict[str, PluginInterface] = {}
self._plugin_capabilities: Dict[str, List[str]] = {}
def register_discovered_plugin(self, plugin_info: PluginInfo):
"""Register a discovered plugin."""
self._discovered_plugins[plugin_info.manifest.name] = plugin_info
def register_loaded_plugin(self, plugin_name: str, plugin: PluginInterface):
"""Register a successfully loaded plugin."""
self._loaded_plugins[plugin_name] = plugin
def unregister_plugin(self, plugin_name: str):
"""Unregister a plugin (remove from loaded)."""
if plugin_name in self._loaded_plugins:
del self._loaded_plugins[plugin_name]
def get_discovered_plugins(self) -> List[PluginInfo]:
"""Get list of all discovered plugins."""
return list(self._discovered_plugins.values())
def get_loaded_plugins(self) -> List[PluginInterface]:
"""Get list of all loaded plugins."""
return list(self._loaded_plugins.values())
def get_plugin_by_name(self, name: str) -> Optional[PluginInterface]:
"""Get loaded plugin by name."""
return self._loaded_plugins.get(name)
def is_plugin_loaded(self, name: str) -> bool:
"""Check if plugin is currently loaded."""
return name in self._loaded_plugins
def get_plugins_by_capability(self, capability: str) -> List[PluginInterface]:
"""Get all plugins that provide a specific capability."""
result = []
for plugin_name, capabilities in self._plugin_capabilities.items():
if capability in capabilities:
plugin = self._loaded_plugins.get(plugin_name)
if plugin:
result.append(plugin)
return resultFile: src/stonks_overwatch/plugins/manager/loader.py
import importlib
import importlib.util
import sys
from pathlib import Path
from typing import Optional, Type
from stonks_overwatch.plugins.models import PluginInfo, PluginManifest
from stonks_overwatch.plugins.interfaces import PluginInterface
class PluginLoadError(Exception):
"""Raised when plugin loading fails."""
pass
class PluginLoader:
"""Handles dynamic loading and unloading of plugins."""
def __init__(self):
self._loaded_modules: Dict[str, any] = {}
def load_plugin_from_path(self, plugin_path: Path) -> PluginInterface:
"""Load plugin from file system path."""
# Load manifest
manifest_path = plugin_path / "plugin_manifest.json"
if not manifest_path.exists():
raise PluginLoadError(f"Manifest not found: {manifest_path}")
manifest = self._load_manifest(manifest_path)
# Load plugin module
plugin_module = self._load_plugin_module(plugin_path, manifest)
# Get plugin class
plugin_class = self._get_plugin_class(plugin_module, manifest)
# Instantiate plugin
plugin_instance = plugin_class(manifest)
# Store module reference for cleanup
self._loaded_modules[manifest.name] = plugin_module
return plugin_instance
def load_plugin_from_entry_point(self, entry_point) -> PluginInterface:
"""Load plugin from setuptools entry point."""
try:
plugin_class = entry_point.load()
# Get manifest from plugin class
if hasattr(plugin_class, 'get_manifest'):
manifest = plugin_class.get_manifest()
else:
raise PluginLoadError(f"Plugin {entry_point.name} missing get_manifest method")
# Instantiate plugin
plugin_instance = plugin_class(manifest)
return plugin_instance
except Exception as e:
raise PluginLoadError(f"Failed to load plugin from entry point {entry_point.name}: {e}")
def unload_plugin(self, plugin_name: str) -> bool:
"""Unload plugin and cleanup modules."""
if plugin_name in self._loaded_modules:
# Remove from sys.modules
module = self._loaded_modules[plugin_name]
if hasattr(module, '__name__') and module.__name__ in sys.modules:
del sys.modules[module.__name__]
# Remove from our tracking
del self._loaded_modules[plugin_name]
return True
return False
def _load_manifest(self, manifest_path: Path) -> PluginManifest:
"""Load and parse plugin manifest."""
import json
try:
with open(manifest_path, 'r') as f:
manifest_data = json.load(f)
# Convert to PluginManifest object
return self._parse_manifest(manifest_data)
except Exception as e:
raise PluginLoadError(f"Failed to load manifest {manifest_path}: {e}")
def _parse_manifest(self, data: dict) -> PluginManifest:
"""Parse manifest JSON into PluginManifest object."""
plugin_data = data.get('plugin', {})
api_data = data.get('api', {})
deps_data = data.get('dependencies', {})
caps_data = data.get('capabilities', {})
config_data = data.get('configuration', {})
services_data = data.get('services', {})
entry_data = data.get('entry_points', {})
return PluginManifest(
name=plugin_data.get('name'),
version=plugin_data.get('version'),
type=plugin_data.get('type'),
display_name=plugin_data.get('display_name'),
description=plugin_data.get('description'),
author=plugin_data.get('author'),
license=plugin_data.get('license'),
homepage=plugin_data.get('homepage'),
min_api_version=api_data.get('min_version'),
max_api_version=api_data.get('max_version'),
required_interfaces=api_data.get('interfaces', []),
python_version=deps_data.get('python'),
core_dependencies={k: v for k, v in deps_data.items() if k != 'python'},
plugin_dependencies=deps_data.get('plugin_dependencies', {}),
services=caps_data.get('services', []),
features=caps_data.get('features', []),
supported_markets=caps_data.get('supported_markets', []),
supported_currencies=caps_data.get('supported_currencies', []),
config_class=config_data.get('config_class'),
required_credentials=config_data.get('required_credentials', []),
optional_settings=config_data.get('optional_settings', []),
service_mappings=services_data,
main_entry_point=entry_data.get('main'),
config_entry_point=entry_data.get('config')
)
def _load_plugin_module(self, plugin_path: Path, manifest: PluginManifest):
"""Load plugin module from path."""
module_name = f"plugin_{manifest.name}"
# Add plugin path to sys.path temporarily
plugin_path_str = str(plugin_path)
if plugin_path_str not in sys.path:
sys.path.insert(0, plugin_path_str)
try:
# Import the main module
spec = importlib.util.spec_from_file_location(
module_name,
plugin_path / "__init__.py"
)
if spec is None:
raise PluginLoadError(f"Could not load plugin spec from {plugin_path}")
module = importlib.util.module_from_spec(spec)
# Execute the module
spec.loader.exec_module(module)
return module
except Exception as e:
raise PluginLoadError(f"Failed to load plugin module: {e}")
finally:
# Remove from sys.path
if plugin_path_str in sys.path:
sys.path.remove(plugin_path_str)
def _get_plugin_class(self, module, manifest: PluginManifest) -> Type[PluginInterface]:
"""Extract plugin class from loaded module."""
# Parse entry point to get class name
entry_point = manifest.main_entry_point
if ':' in entry_point:
module_path, class_name = entry_point.split(':')
else:
raise PluginLoadError(f"Invalid entry point format: {entry_point}")
# Get the class from module
if hasattr(module, class_name):
plugin_class = getattr(module, class_name)
# Verify it implements PluginInterface
if not issubclass(plugin_class, PluginInterface):
raise PluginLoadError(f"Plugin class {class_name} does not implement PluginInterface")
return plugin_class
else:
raise PluginLoadError(f"Plugin class {class_name} not found in module")File: src/stonks_overwatch/plugins/manager/plugin_manager.py
from typing import List, Optional, Dict, Any
from pathlib import Path
from stonks_overwatch.plugins.models import PluginInfo, PluginManifest
from stonks_overwatch.plugins.interfaces import PluginInterface, BrokerPluginInterface
from stonks_overwatch.plugins.registry.plugin_registry import PluginRegistry
from stonks_overwatch.plugins.manager.loader import PluginLoader
from stonks_overwatch.plugins.manager.validator import PluginValidator
from stonks_overwatch.plugins.manager.discovery import PluginDiscovery
from stonks_overwatch.utils.core.logger import StonksLogger
from stonks_overwatch.utils.core.logger_constants import LOGGER_PLUGINS
class PluginManager:
"""Central manager for all plugin operations."""
def __init__(self):
self.logger = StonksLogger.get_logger(LOGGER_PLUGINS, "[PLUGIN_MANAGER]")
self.registry = PluginRegistry()
self.loader = PluginLoader()
self.validator = PluginValidator()
self.discovery = PluginDiscovery()
def discover_all_plugins(self) -> List[PluginInfo]:
"""Discover all available plugins from all sources."""
self.logger.info("Starting plugin discovery...")
discovered = []
# Discover from entry points
entry_point_plugins = self.discovery.discover_from_entry_points()
discovered.extend(entry_point_plugins)
# Discover from file system
fs_plugins = self.discovery.discover_from_filesystem()
discovered.extend(fs_plugins)
# Register discovered plugins
for plugin_info in discovered:
self.registry.register_discovered_plugin(plugin_info)
self.logger.info(f"Discovered {len(discovered)} plugins")
return discovered
def load_plugin(self, plugin_name: str, auto_validate: bool = True) -> bool:
"""Load a specific plugin by name."""
self.logger.info(f"Loading plugin: {plugin_name}")
# Get plugin info
discovered_plugins = self.registry.get_discovered_plugins()
plugin_info = next((p for p in discovered_plugins if p.manifest.name == plugin_name), None)
if not plugin_info:
self.logger.error(f"Plugin not found: {plugin_name}")
return False
try:
# Validate plugin if requested
if auto_validate:
validation_result = self.validator.validate_manifest(plugin_info.manifest)
if not validation_result.is_valid:
self.logger.error(f"Plugin validation failed: {validation_result.errors}")
return False
dep_result = self.validator.validate_dependencies(plugin_info.manifest)
if not dep_result.is_valid:
self.logger.error(f"Plugin dependency validation failed: {dep_result.errors}")
return False
# Load the plugin
if plugin_info.path:
# Load from file system
plugin = self.loader.load_plugin_from_path(Path(plugin_info.path))
else:
# Load from entry point
self.logger.error("Entry point loading not yet implemented")
return False
# Initialize plugin
if not plugin.initialize():
self.logger.error(f"Plugin initialization failed: {plugin_name}")
return False
# Register loaded plugin
self.registry.register_loaded_plugin(plugin_name, plugin)
self.logger.info(f"Successfully loaded plugin: {plugin_name}")
return True
except Exception as e:
self.logger.error(f"Failed to load plugin {plugin_name}: {e}")
return False
def unload_plugin(self, plugin_name: str) -> bool:
"""Unload a specific plugin."""
self.logger.info(f"Unloading plugin: {plugin_name}")
plugin = self.registry.get_plugin_by_name(plugin_name)
if not plugin:
self.logger.warning(f"Plugin not loaded: {plugin_name}")
return False
try:
# Shutdown plugin
if not plugin.shutdown():
self.logger.warning(f"Plugin shutdown returned false: {plugin_name}")
# Unload from loader
self.loader.unload_plugin(plugin_name)
# Unregister from registry
self.registry.unregister_plugin(plugin_name)
self.logger.info(f"Successfully unloaded plugin: {plugin_name}")
return True
except Exception as e:
self.logger.error(f"Failed to unload plugin {plugin_name}: {e}")
return False
def get_broker_plugins(self) -> List[BrokerPluginInterface]:
"""Get all loaded broker plugins."""
broker_plugins = []
for plugin in self.registry.get_loaded_plugins():
if isinstance(plugin, BrokerPluginInterface):
broker_plugins.append(plugin)
return broker_plugins
def get_plugin_health(self, plugin_name: str) -> Optional[Dict[str, Any]]:
"""Get health status of a specific plugin."""
plugin = self.registry.get_plugin_by_name(plugin_name)
if plugin:
return plugin.health_check()
return None
def reload_plugin(self, plugin_name: str) -> bool:
"""Reload a plugin (unload and load again)."""
self.logger.info(f"Reloading plugin: {plugin_name}")
if self.registry.is_plugin_loaded(plugin_name):
if not self.unload_plugin(plugin_name):
return False
return self.load_plugin(plugin_name)- Plugin registry implementation
- Plugin loader with file system and entry point support
- Core plugin manager with lifecycle operations
- Error handling and logging framework
- Unit tests for core functionality
- Integration tests for plugin loading/unloading
- Implement multiple plugin discovery mechanisms
- Support entry points (setuptools) discovery
- Support file system discovery with manifest scanning
- Create plugin metadata parsing and validation
File: src/stonks_overwatch/plugins/manager/discovery.py
import pkg_resources
from typing import List, Iterator
from pathlib import Path
from stonks_overwatch.plugins.models import PluginInfo, PluginManifest
from stonks_overwatch.utils.core.logger import StonksLogger
from stonks_overwatch.utils.core.logger_constants import LOGGER_PLUGINS
class PluginDiscovery:
"""Handles discovery of plugins from multiple sources."""
ENTRY_POINT_GROUP = "stonks_overwatch.brokers"
PLUGIN_DIRECTORIES = [
Path.cwd() / "plugins",
Path.home() / ".stonks_overwatch" / "plugins",
Path("/usr/local/share/stonks_overwatch/plugins"),
]
def __init__(self):
self.logger = StonksLogger.get_logger(LOGGER_PLUGINS, "[PLUGIN_DISCOVERY]")
def discover_from_entry_points(self) -> List[PluginInfo]:
"""Discover plugins using setuptools entry points."""
plugins = []
try:
for entry_point in pkg_resources.iter_entry_points(self.ENTRY_POINT_GROUP):
try:
# Load the plugin class to get manifest
plugin_class = entry_point.load()
if hasattr(plugin_class, 'get_manifest'):
manifest = plugin_class.get_manifest()
plugin_info = PluginInfo(
manifest=manifest,
path="", # Entry point has no path
state="discovered"
)
plugins.append(plugin_info)
except Exception as e:
self.logger.warning(f"Failed to load entry point {entry_point.name}: {e}")
except Exception as e:
self.logger.error(f"Error discovering entry points: {e}")
return plugins
def discover_from_filesystem(self) -> List[PluginInfo]:
"""Discover plugins by scanning file system directories."""
plugins = []
for directory in self.PLUGIN_DIRECTORIES:
if directory.exists() and directory.is_dir():
plugins.extend(self._scan_directory(directory))
return plugins
def _scan_directory(self, directory: Path) -> List[PluginInfo]:
"""Scan a directory for plugin manifests."""
plugins = []
for item in directory.iterdir():
if item.is_dir():
manifest_file = item / "plugin_manifest.json"
if manifest_file.exists():
try:
manifest = self._load_manifest_file(manifest_file)
plugin_info = PluginInfo(
manifest=manifest,
path=str(item),
state="discovered"
)
plugins.append(plugin_info)
except Exception as e:
self.logger.warning(f"Failed to load manifest {manifest_file}: {e}")
return plugins
def _load_manifest_file(self, manifest_path: Path) -> PluginManifest:
"""Load and parse a manifest file."""
import json
with open(manifest_path, 'r') as f:
data = json.load(f)
# Extract nested structure and flatten for PluginManifest
plugin_data = data.get('plugin', {})
api_data = data.get('api', {})
deps_data = data.get('dependencies', {})
caps_data = data.get('capabilities', {})
config_data = data.get('configuration', {})
services_data = data.get('services', {})
entry_data = data.get('entry_points', {})
return PluginManifest(
name=plugin_data.get('name'),
version=plugin_data.get('version'),
type=plugin_data.get('type'),
display_name=plugin_data.get('display_name'),
description=plugin_data.get('description'),
author=plugin_data.get('author'),
license=plugin_data.get('license'),
homepage=plugin_data.get('homepage'),
min_api_version=api_data.get('min_version'),
max_api_version=api_data.get('max_version'),
required_interfaces=api_data.get('interfaces', []),
python_version=deps_data.get('python'),
core_dependencies={k: v for k, v in deps_data.items() if k != 'python'},
plugin_dependencies=deps_data.get('plugin_dependencies', {}),
services=caps_data.get('services', []),
features=caps_data.get('features', []),
supported_markets=caps_data.get('supported_markets', []),
supported_currencies=caps_data.get('supported_currencies', []),
config_class=config_data.get('config_class'),
required_credentials=config_data.get('required_credentials', []),
optional_settings=config_data.get('optional_settings', []),
service_mappings=services_data,
main_entry_point=entry_data.get('main'),
config_entry_point=entry_data.get('config')
)- Entry points discovery implementation
- File system discovery with manifest parsing
- Plugin directory scanning logic
- Manifest validation and parsing
- Discovery integration tests
- Performance optimization for large plugin directories
- Implement comprehensive plugin state management
- Create plugin event system
- Build health monitoring and metrics
- Add plugin configuration hot-reloading
File: src/stonks_overwatch/plugins/manager/lifecycle.py
from enum import Enum
from typing import Dict, List, Callable, Any
from dataclasses import dataclass
from datetime import datetime
class PluginState(Enum):
DISCOVERED = "discovered"
LOADING = "loading"
LOADED = "loaded"
ACTIVE = "active"
ERROR = "error"
DISABLED = "disabled"
UNLOADING = "unloading"
@dataclass
class PluginStateTransition:
from_state: PluginState
to_state: PluginState
timestamp: datetime
reason: str
class PluginLifecycleManager:
"""Manages plugin lifecycle states and transitions."""
def __init__(self):
self._plugin_states: Dict[str, PluginState] = {}
self._state_history: Dict[str, List[PluginStateTransition]] = {}
self._event_handlers: Dict[str, List[Callable]] = {}
def set_plugin_state(self, plugin_name: str, new_state: PluginState, reason: str = ""):
"""Set plugin state and record transition."""
old_state = self._plugin_states.get(plugin_name, PluginState.DISCOVERED)
if old_state != new_state:
# Record transition
transition = PluginStateTransition(
from_state=old_state,
to_state=new_state,
timestamp=datetime.now(),
reason=reason
)
# Update state
self._plugin_states[plugin_name] = new_state
# Record history
if plugin_name not in self._state_history:
self._state_history[plugin_name] = []
self._state_history[plugin_name].append(transition)
# Trigger events
self._trigger_state_change_event(plugin_name, transition)
def get_plugin_state(self, plugin_name: str) -> PluginState:
"""Get current state of plugin."""
return self._plugin_states.get(plugin_name, PluginState.DISCOVERED)
def get_plugins_by_state(self, state: PluginState) -> List[str]:
"""Get all plugins in a specific state."""
return [name for name, s in self._plugin_states.items() if s == state]
def register_event_handler(self, event_type: str, handler: Callable):
"""Register event handler for lifecycle events."""
if event_type not in self._event_handlers:
self._event_handlers[event_type] = []
self._event_handlers[event_type].append(handler)
def _trigger_state_change_event(self, plugin_name: str, transition: PluginStateTransition):
"""Trigger state change event."""
event_type = f"state_change.{transition.to_state.value}"
if event_type in self._event_handlers:
for handler in self._event_handlers[event_type]:
try:
handler(plugin_name, transition)
except Exception as e:
# Log error but don't stop other handlers
passFile: src/stonks_overwatch/plugins/monitoring/health.py
from typing import Dict, Any, List
from dataclasses import dataclass
from datetime import datetime, timedelta
from stonks_overwatch.plugins.interfaces import PluginInterface
@dataclass
class HealthMetric:
name: str
value: Any
unit: str
timestamp: datetime
@dataclass
class HealthStatus:
plugin_name: str
is_healthy: bool
status_message: str
metrics: List[HealthMetric]
last_check: datetime
class PluginHealthMonitor:
"""Monitors plugin health and collects metrics."""
def __init__(self):
self._health_history: Dict[str, List[HealthStatus]] = {}
self._metric_thresholds: Dict[str, Dict[str, Any]] = {}
def check_plugin_health(self, plugin: PluginInterface) -> HealthStatus:
"""Perform health check on a plugin."""
try:
# Get health data from plugin
health_data = plugin.health_check()
# Convert to metrics
metrics = []
for key, value in health_data.items():
metric = HealthMetric(
name=key,
value=value,
unit=self._get_metric_unit(key),
timestamp=datetime.now()
)
metrics.append(metric)
# Determine overall health
is_healthy = self._evaluate_health(plugin.manifest.name, metrics)
status_message = "Healthy" if is_healthy else "Unhealthy"
status = HealthStatus(
plugin_name=plugin.manifest.name,
is_healthy=is_healthy,
status_message=status_message,
metrics=metrics,
last_check=datetime.now()
)
# Store in history
self._store_health_status(status)
return status
except Exception as e:
# Plugin health check failed
status = HealthStatus(
plugin_name=plugin.manifest.name,
is_healthy=False,
status_message=f"Health check failed: {e}",
metrics=[],
last_check=datetime.now()
)
self._store_health_status(status)
return status
def get_health_history(self, plugin_name: str, hours: int = 24) -> List[HealthStatus]:
"""Get health history for a plugin."""
if plugin_name not in self._health_history:
return []
cutoff = datetime.now() - timedelta(hours=hours)
return [
status for status in self._health_history[plugin_name]
if status.last_check >= cutoff
]
def set_metric_threshold(self, plugin_name: str, metric_name: str,
min_value: Any = None, max_value: Any = None):
"""Set health thresholds for plugin metrics."""
if plugin_name not in self._metric_thresholds:
self._metric_thresholds[plugin_name] = {}
self._metric_thresholds[plugin_name][metric_name] = {
'min': min_value,
'max': max_value
}
def _evaluate_health(self, plugin_name: str, metrics: List[HealthMetric]) -> bool:
"""Evaluate if plugin is healthy based on metrics and thresholds."""
if plugin_name not in self._metric_thresholds:
return True # No thresholds defined, assume healthy
thresholds = self._metric_thresholds[plugin_name]
for metric in metrics:
if metric.name in thresholds:
threshold = thresholds[metric.name]
if threshold['min'] is not None and metric.value < threshold['min']:
return False
if threshold['max'] is not None and metric.value > threshold['max']:
return False
return True
def _store_health_status(self, status: HealthStatus):
"""Store health status in history."""
if status.plugin_name not in self._health_history:
self._health_history[status.plugin_name] = []
self._health_history[status.plugin_name].append(status)
# Keep only last 1000 entries per plugin
if len(self._health_history[status.plugin_name]) > 1000:
self._health_history[status.plugin_name] = self._health_history[status.plugin_name][-1000:]
def _get_metric_unit(self, metric_name: str) -> str:
"""Get unit for metric name."""
unit_map = {
'memory_usage': 'MB',
'cpu_usage': '%',
'request_count': 'count',
'error_rate': '%',
'response_time': 'ms'
}
return unit_map.get(metric_name, '')- Plugin state management system
- Lifecycle event system
- Health monitoring and metrics collection
- Plugin performance tracking
- State transition history
- Automated health checks and alerting
- Create adapters for existing broker implementations
- Enable side-by-side operation of legacy and plugin systems
- Provide migration tools and utilities
- Maintain backward compatibility
✅ Completed: Task 39 (Authentication Service & Validation Refactoring) has prepared the authentication system for plugins:
- Generic Credential Types: Authentication interfaces now use
objectinstead of broker-specific types - Polymorphic Validation:
CredentialValidatorsupports plugin-provided credential classes - Centralized Helpers:
AuthenticationHelperprovides unified broker readiness checks - Plugin-Ready: No core authentication code dependencies on specific broker types
This refactoring enables plugins to provide their own credential classes without modifying core authentication interfaces.
File: src/stonks_overwatch/plugins/legacy/bridge.py
from typing import Dict, Type, List
from stonks_overwatch.plugins.interfaces import BrokerPluginInterface
from stonks_overwatch.plugins.models import PluginManifest, PluginType
from stonks_overwatch.core.service_types import ServiceType
from stonks_overwatch.config.base_config import BaseConfig
class LegacyBrokerAdapter(BrokerPluginInterface):
"""Adapter to wrap legacy broker implementations as plugins."""
def __init__(self, broker_name: str, broker_config: dict):
self.broker_name = broker_name
self.broker_config = broker_config
self._manifest = self._create_manifest()
self._services = {}
self._config_class = None
# Extract legacy components
self._extract_legacy_components()
@property
def manifest(self) -> PluginManifest:
return self._manifest
def initialize(self) -> bool:
"""Initialize legacy broker adapter."""
try:
# Initialize any legacy components if needed
return True
except Exception:
return False
def shutdown(self) -> bool:
"""Shutdown legacy broker adapter."""
try:
# Cleanup legacy components if needed
return True
except Exception:
return False
def health_check(self) -> Dict[str, any]:
"""Basic health check for legacy broker."""
return {
'status': 'legacy_adapter',
'broker_name': self.broker_name,
'services_count': len(self._services),
'config_available': self._config_class is not None
}
def get_config_class(self) -> Type[BaseConfig]:
"""Return legacy broker configuration class."""
return self._config_class
def get_services(self) -> Dict[ServiceType, Type]:
"""Return legacy broker services."""
return self._services
def validate_configuration(self, config: BaseConfig) -> List[str]:
"""Validate legacy configuration (basic validation)."""
errors = []
if not config:
errors.append("Configuration is required")
return errors
def _create_manifest(self) -> PluginManifest:
"""Create plugin manifest from legacy broker config."""
# Extract information from legacy config
supports_complete = self.broker_config.get("supports_complete_registration", False)
services = list(self.broker_config.get("services", {}).keys())
return PluginManifest(
name=f"{self.broker_name}-legacy",
version="1.0.0",
type=PluginType.BROKER,
display_name=f"{self.broker_name.title()} (Legacy)",
description=f"Legacy adapter for {self.broker_name} broker",
author="Stonks Overwatch",
license="MIT",
min_api_version="1.0.0",
max_api_version="2.0.0",
required_interfaces=["BrokerServiceInterface"],
python_version=">=3.11",
core_dependencies={},
plugin_dependencies={},
services=[service.value for service in services],
features=["legacy_adapter"],
supported_markets=[],
supported_currencies=[],
config_class=f"{self.broker_name}.config",
required_credentials=[],
optional_settings=[],
service_mappings={},
main_entry_point=f"{self.broker_name}_legacy:LegacyAdapter",
config_entry_point=f"{self.broker_name}.config:Config"
)
def _extract_legacy_components(self):
"""Extract services and config from legacy broker config."""
# Get config class
self._config_class = self.broker_config.get("config")
# Get services
legacy_services = self.broker_config.get("services", {})
for service_type, service_class in legacy_services.items():
if isinstance(service_type, ServiceType):
self._services[service_type] = service_classFile: src/stonks_overwatch/plugins/legacy/migration.py
from pathlib import Path
from typing import Dict, Any
import json
from stonks_overwatch.core.registry_setup import BROKER_CONFIGS
from stonks_overwatch.plugins.models import PluginManifest
class BrokerMigrationTool:
"""Tools for migrating legacy brokers to plugin format."""
def __init__(self, output_dir: Path = None):
self.output_dir = output_dir or Path("./migrated_plugins")
def migrate_all_legacy_brokers(self):
"""Migrate all brokers from BROKER_CONFIGS to plugin format."""
for broker_name, broker_config in BROKER_CONFIGS.items():
self.migrate_broker(broker_name, broker_config)
def migrate_broker(self, broker_name: str, broker_config: dict):
"""Migrate a single broker to plugin format."""
print(f"Migrating broker: {broker_name}")
# Create plugin directory
plugin_dir = self.output_dir / f"{broker_name}-plugin"
plugin_dir.mkdir(parents=True, exist_ok=True)
# Generate manifest
manifest = self._generate_manifest(broker_name, broker_config)
manifest_path = plugin_dir / "plugin_manifest.json"
with open(manifest_path, 'w') as f:
json.dump(manifest, f, indent=2)
# Generate plugin wrapper
self._generate_plugin_wrapper(broker_name, broker_config, plugin_dir)
# Setup plugin structure
self._setup_plugin_structure(broker_name, plugin_dir)
print(f"Migration complete: {plugin_dir}")
def _generate_manifest(self, broker_name: str, broker_config: dict) -> dict:
"""Generate plugin manifest from legacy config."""
services = broker_config.get("services", {})
config_class = broker_config.get("config")
manifest_data = {
"plugin": {
"name": f"{broker_name}-broker",
"version": "1.0.0",
"type": "broker",
"display_name": f"{broker_name.title()} Broker",
"description": f"Migrated {broker_name} broker plugin",
"author": "Stonks Overwatch Team",
"license": "MIT"
},
"api": {
"min_version": "1.0.0",
"max_version": "2.0.0",
"interfaces": [
"BrokerServiceInterface",
"PortfolioServiceInterface",
"TransactionServiceInterface"
]
},
"dependencies": {
"python": ">=3.11",
"stonks-overwatch-core": ">=2.0.0"
},
"capabilities": {
"services": [service_type.value for service_type in services.keys()],
"features": ["migrated_legacy"],
"supported_markets": [],
"supported_currencies": []
},
"configuration": {
"config_class": f"{broker_name}.config.{config_class.__name__}" if config_class else "",
"required_credentials": [],
"optional_settings": []
},
"services": {
service_type.value: f"{broker_name}.services.{service_class.__name__}"
for service_type, service_class in services.items()
},
"entry_points": {
"main": f"{broker_name}.plugin:{broker_name.title()}Plugin",
"config": f"{broker_name}.config:{config_class.__name__}" if config_class else ""
}
}
return manifest_data
def _generate_plugin_wrapper(self, broker_name: str, broker_config: dict, plugin_dir: Path):
"""Generate plugin wrapper class."""
config_class_name = broker_config.get("config", "Config").__name__
plugin_class_name = f"{broker_name.title()}Plugin"
plugin_code = f'''"""
Migrated {broker_name} broker plugin.
This is an automatically generated plugin wrapper for the legacy {broker_name} broker.
"""
from typing import Dict, Type, List
from stonks_overwatch.plugins.interfaces import BrokerPluginInterface
from stonks_overwatch.plugins.models import PluginManifest
from stonks_overwatch.core.service_types import ServiceType
from stonks_overwatch.config.base_config import BaseConfig
# Import legacy components
from stonks_overwatch.config.{broker_name} import {config_class_name}
{self._generate_service_imports(broker_name, broker_config)}
class {plugin_class_name}(BrokerPluginInterface):
"""Plugin wrapper for {broker_name} broker."""
def __init__(self, manifest: PluginManifest):
self._manifest = manifest
@property
def manifest(self) -> PluginManifest:
return self._manifest
def initialize(self) -> bool:
"""Initialize {broker_name} plugin."""
try:
return True
except Exception:
return False
def shutdown(self) -> bool:
"""Shutdown {broker_name} plugin."""
try:
return True
except Exception:
return False
def health_check(self) -> Dict[str, any]:
"""Health check for {broker_name} plugin."""
return {{
'status': 'ok',
'broker': '{broker_name}',
'plugin_type': 'migrated_legacy'
}}
def get_config_class(self) -> Type[BaseConfig]:
"""Return {broker_name} configuration class."""
return {config_class_name}
def get_services(self) -> Dict[ServiceType, Type]:
"""Return {broker_name} services."""
return {{
{self._generate_service_mappings(broker_config)}
}}
def validate_configuration(self, config: BaseConfig) -> List[str]:
"""Validate {broker_name} configuration."""
errors = []
if not isinstance(config, {config_class_name}):
errors.append("Invalid configuration type")
return errors
@classmethod
def get_manifest(cls) -> PluginManifest:
"""Get plugin manifest."""
import json
from pathlib import Path
manifest_path = Path(__file__).parent / "plugin_manifest.json"
with open(manifest_path, 'r') as f:
data = json.load(f)
# Parse and return manifest
# Implementation would need full conversion logic
pass
'''
plugin_file = plugin_dir / "__init__.py"
with open(plugin_file, 'w') as f:
f.write(plugin_code)
def _generate_service_imports(self, broker_name: str, broker_config: dict) -> str:
"""Generate import statements for services."""
imports = []
services = broker_config.get("services", {})
for service_type, service_class in services.items():
module_path = f"stonks_overwatch.services.brokers.{broker_name}.services"
imports.append(f"from {module_path} import {service_class.__name__}")
return "\n".join(imports)
def _generate_service_mappings(self, broker_config: dict) -> str:
"""Generate service type mappings."""
mappings = []
services = broker_config.get("services", {})
for service_type, service_class in services.items():
mappings.append(f" ServiceType.{service_type.name}: {service_class.__name__},")
return "\n".join(mappings)
def _setup_plugin_structure(self, broker_name: str, plugin_dir: Path):
"""Set up plugin directory structure."""
# Create subdirectories
(plugin_dir / "config").mkdir(exist_ok=True)
(plugin_dir / "services").mkdir(exist_ok=True)
(plugin_dir / "client").mkdir(exist_ok=True)
(plugin_dir / "repositories").mkdir(exist_ok=True)
# Create __init__.py files
for subdir in ["config", "services", "client", "repositories"]:
init_file = plugin_dir / subdir / "__init__.py"
init_file.touch()
print(f"Created plugin structure in {plugin_dir}")- Legacy broker adapter implementation
- Migration utilities and tools
- Side-by-side operation support
- Backward compatibility testing
- Migration documentation and guides
- Automated migration scripts
- Implement advanced plugin capabilities
- Add security and sandboxing
- Create plugin marketplace features
- Build comprehensive monitoring and analytics
Considerations:
- Resource limits per plugin (memory, CPU)
- Permission system for file access
- Network access control
- Process isolation options
Considerations:
- Semantic versioning enforcement
- Dependency conflict resolution
- Virtual environment per plugin
- Shared dependency optimization
Considerations:
- Plugin catalog/directory
- Plugin ratings and reviews
- Automatic updates
- Plugin signing and verification
Considerations:
- Performance metrics collection
- Resource usage tracking
- Error rate monitoring
- Usage analytics
- Security and sandboxing framework
- Dependency resolution system
- Plugin marketplace infrastructure
- Advanced monitoring and analytics
- Performance optimization
- Production readiness testing
| Risk | Impact | Probability | Mitigation |
|---|---|---|---|
| Performance degradation | High | Medium | Benchmarking, caching, lazy loading |
| Memory leaks from plugins | High | Medium | Resource tracking, automatic cleanup |
| Plugin compatibility issues | Medium | High | Comprehensive validation, version checks |
| Security vulnerabilities | High | Low | Sandboxing, permission system |
- Migration: Gradual migration with fallback to current system
- Testing: Comprehensive test suite for plugin validation
- Documentation: Clear migration guides and examples
- Support: Backward compatibility for existing integrations
- Zero Breaking Changes: Existing functionality continues to work
- Performance Maintained: <5% performance impact for core operations
- Easy Plugin Development: New broker plugin in <1 day
- Reliable Operations: 99.9% uptime with plugin failures isolated
- Community Adoption: Enable 3rd party broker development
- 90% code coverage for all plugin components
- Mock plugin implementations for testing
- Validation logic testing
- Dependency resolution testing
- Full plugin lifecycle testing (discover → load → initialize → use → unload)
- Multi-plugin scenarios
- Legacy adapter testing
- Configuration validation
- Load testing with multiple plugins
- Memory leak detection
- CPU usage profiling
- Startup time impact
- Plugin isolation verification
- Permission system testing
- Malicious plugin simulation
- Resource limit enforcement
- Cross-version plugin compatibility
- API version compatibility matrix
- Legacy broker compatibility
- Python version compatibility
-
Phase 0: Preparation (1-2 weeks)
- Finalize all decision gates
- Assign development team
- Set up project tracking
- Create detailed sprint plans
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Phase 1: Start Implementation (Week 1)
- Begin with plugin metadata and interfaces
- Set up development environment
- Create initial documentation structure
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Regular Reviews
- Weekly progress reviews
- Phase completion gate reviews
- Stakeholder updates
- Archive this document for future reference
- Document reasons for rejection
- Consider alternative approaches to extensibility
- Focus on incremental improvements to current system
Last Updated: November 2025 Document Type: Comprehensive Proposal with Implementation Guide Status: Pending Approval