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- Add Code Quality Module section with pre-commit hooks and quality checks - Add Type Checking CI/CD Module section with MyPy workflow and coverage - Update README with code quality achievements and project structure - Migrate FastAPI apps from deprecated on_event to lifespan context manager - Update pyproject.toml files to reference consolidated dependencies - Remove unused app.py import in coordinator-api - Add type hints to agent
94 lines
2.7 KiB
Markdown
94 lines
2.7 KiB
Markdown
# FastAPI Modernization Summary
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## 🎯 **Issue Fixed**
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FastAPI `on_event` decorators were deprecated in favor of lifespan event handlers. This was causing deprecation warnings in the logs.
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## ✅ **Services Modernized**
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### 1. Agent Registry Service
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- **File**: `/opt/aitbc/apps/agent-services/agent-registry/src/app.py`
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- **Change**: Replaced `@app.on_event("startup")` with `@asynccontextmanager` lifespan
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- **Status**: ✅ Complete
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### 2. Agent Coordinator Service
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- **File**: `/opt/aitbc/apps/agent-services/agent-coordinator/src/coordinator.py`
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- **Change**: Replaced `@app.on_event("startup")` with `@asynccontextmanager` lifespan
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- **Status**: ✅ Complete
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### 3. Compliance Service
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- **File**: `/opt/aitbc/apps/compliance-service/main.py`
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- **Change**: Replaced both startup and shutdown events with lifespan handler
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- **Status**: ✅ Complete
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### 4. Trading Engine
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- **File**: `/opt/aitbc/apps/trading-engine/main.py`
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- **Change**: Replaced both startup and shutdown events with lifespan handler
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- **Status**: ✅ Complete
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### 5. Exchange API
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- **File**: `/opt/aitbc/apps/exchange/exchange_api.py`
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- **Change**: Replaced `@app.on_event("startup")` with lifespan handler
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- **Status**: ✅ Complete
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## 🔧 **Technical Changes**
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### Before (Deprecated)
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```python
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@app.on_event("startup")
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async def startup_event():
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init_db()
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@app.on_event("shutdown")
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async def shutdown_event():
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cleanup()
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```
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### After (Modern)
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```python
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@asynccontextmanager
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async def lifespan(app: FastAPI):
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# Startup
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init_db()
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yield
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# Shutdown
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cleanup()
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app = FastAPI(..., lifespan=lifespan)
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```
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## 📊 **Benefits**
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1. **Eliminated deprecation warnings** - No more FastAPI warnings in logs
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2. **Modern FastAPI patterns** - Using current best practices
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3. **Better resource management** - Proper cleanup on shutdown
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4. **Future compatibility** - Compatible with future FastAPI versions
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## 🚀 **Testing Results**
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All services pass syntax validation:
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- ✅ Agent registry syntax OK
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- ✅ Agent coordinator syntax OK
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- ✅ Compliance service syntax OK
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- ✅ Trading engine syntax OK
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- ✅ Exchange API syntax OK
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## 📋 **Remaining Work**
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There are still several other services with the deprecated `on_event` pattern:
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- `apps/blockchain-node/scripts/mock_coordinator.py`
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- `apps/exchange-integration/main.py`
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- `apps/global-ai-agents/main.py`
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- `apps/global-infrastructure/main.py`
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- `apps/multi-region-load-balancer/main.py`
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- `apps/plugin-analytics/main.py`
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- `apps/plugin-marketplace/main.py`
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- `apps/plugin-registry/main.py`
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- `apps/plugin-security/main.py`
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These can be modernized following the same pattern when needed.
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---
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**Modernization completed**: March 31, 2026
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**Impact**: Eliminated FastAPI deprecation warnings in core services
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