Base code

backend/models/api_monitoring.py

@@ -0,0 +1,102 @@
+"""
+API Monitoring Database Models
+Persistent storage for API monitoring statistics.
+"""
+
+from sqlalchemy import Column, Integer, String, DateTime, Float, Boolean, JSON, Index, Text
+from sqlalchemy.ext.declarative import declarative_base
+from datetime import datetime
+import json
+
+Base = declarative_base()
+
+class APIRequest(Base):
+    """Store individual API requests for monitoring."""
+    
+    __tablename__ = "api_requests"
+    
+    id = Column(Integer, primary_key=True)
+    timestamp = Column(DateTime, default=datetime.utcnow, nullable=False)
+    path = Column(String(500), nullable=False)
+    method = Column(String(10), nullable=False)
+    status_code = Column(Integer, nullable=False)
+    duration = Column(Float, nullable=False)  # Response time in seconds
+    user_id = Column(String(50), nullable=True)
+    cache_hit = Column(Boolean, nullable=True)
+    request_size = Column(Integer, nullable=True)
+    response_size = Column(Integer, nullable=True)
+    user_agent = Column(String(500), nullable=True)
+    ip_address = Column(String(45), nullable=True)
+    
+    # Indexes for fast queries
+    __table_args__ = (
+        Index('idx_timestamp', 'timestamp'),
+        Index('idx_path_method', 'path', 'method'),
+        Index('idx_status_code', 'status_code'),
+        Index('idx_user_id', 'user_id'),
+    )
+
+class APIEndpointStats(Base):
+    """Aggregated statistics per endpoint."""
+    
+    __tablename__ = "api_endpoint_stats"
+    
+    id = Column(Integer, primary_key=True)
+    endpoint = Column(String(500), nullable=False, unique=True)  # "GET /api/endpoint"
+    total_requests = Column(Integer, default=0)
+    total_errors = Column(Integer, default=0)
+    total_duration = Column(Float, default=0.0)
+    avg_duration = Column(Float, default=0.0)
+    min_duration = Column(Float, nullable=True)
+    max_duration = Column(Float, nullable=True)
+    last_called = Column(DateTime, nullable=True)
+    cache_hits = Column(Integer, default=0)
+    cache_misses = Column(Integer, default=0)
+    cache_hit_rate = Column(Float, default=0.0)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    __table_args__ = (
+        Index('idx_endpoint', 'endpoint'),
+        Index('idx_total_requests', 'total_requests'),
+        Index('idx_avg_duration', 'avg_duration'),
+    )
+
+class SystemHealth(Base):
+    """System health snapshots."""
+    
+    __tablename__ = "system_health"
+    
+    id = Column(Integer, primary_key=True)
+    timestamp = Column(DateTime, default=datetime.utcnow, nullable=False)
+    status = Column(String(20), nullable=False)  # healthy, warning, critical
+    total_requests = Column(Integer, default=0)
+    total_errors = Column(Integer, default=0)
+    error_rate = Column(Float, default=0.0)
+    avg_response_time = Column(Float, default=0.0)
+    cache_hit_rate = Column(Float, default=0.0)
+    active_endpoints = Column(Integer, default=0)
+    metrics = Column(JSON, nullable=True)  # Additional metrics
+    
+    __table_args__ = (
+        Index('idx_timestamp', 'timestamp'),
+        Index('idx_status', 'status'),
+    )
+
+class CachePerformance(Base):
+    """Cache performance metrics."""
+    
+    __tablename__ = "cache_performance"
+    
+    id = Column(Integer, primary_key=True)
+    timestamp = Column(DateTime, default=datetime.utcnow, nullable=False)
+    cache_type = Column(String(50), nullable=False)  # "comprehensive_user_data", "redis", etc.
+    hits = Column(Integer, default=0)
+    misses = Column(Integer, default=0)
+    hit_rate = Column(Float, default=0.0)
+    avg_response_time = Column(Float, default=0.0)
+    total_requests = Column(Integer, default=0)
+    
+    __table_args__ = (
+        Index('idx_timestamp', 'timestamp'),
+        Index('idx_cache_type', 'cache_type'),
+    )