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cache_endpoints.py — Endpoint API per Gestione Cache
Endpoint:
GET /api/cache/stats — Statistiche cache
POST /api/cache/invalidate — Invalida un entry
GET /api/cache/health — Health check cache
POST /api/cache/reset-stats — Resetta statistiche
"""
from fastapi import APIRouter, HTTPException
from pydantic import BaseModel
from typing import Optional
import logging
# Import cache manager
try:
from backend.api.cache_manager import (
get_cache_stats,
reset_cache_stats,
invalidate_cache,
CacheStrategy,
CACHE_ENABLED,
)
except ImportError:
from cache_manager import (
get_cache_stats,
reset_cache_stats,
invalidate_cache,
CacheStrategy,
CACHE_ENABLED,
)
_logger = logging.getLogger("cache_endpoints")
router = APIRouter(prefix="/api/cache", tags=["cache"])
# ── Modelli Pydantic ──────────────────────────────────────────────────────
class InvalidateCacheRequest(BaseModel):
strategy: str # "query", "memory", "embedding", "conversation", "analytics"
identifier: str
class CacheStatsResponse(BaseModel):
enabled: bool
hits: int
misses: int
sets: int
deletes: int
evictions: int
hit_rate_percent: float
total_requests: int
class CacheHealthResponse(BaseModel):
ok: bool
cache_enabled: bool
message: str
# ── Endpoint: Statistiche Cache ────────────────────────────────────────────
@router.get("/stats", response_model=CacheStatsResponse)
async def cache_stats():
"""Ritorna le statistiche del cache layer."""
try:
stats = get_cache_stats()
return CacheStatsResponse(**stats)
except Exception as exc:
_logger.error(f"Error fetching cache stats: {exc}")
raise HTTPException(500, "Error fetching cache stats")
# ── Endpoint: Invalida Cache ──────────────────────────────────────────────
@router.post("/invalidate")
async def invalidate_cache_entry(req: InvalidateCacheRequest):
"""Invalida un entry specifico dalla cache."""
try:
# Valida strategy
try:
strategy = CacheStrategy(req.strategy)
except ValueError:
raise HTTPException(
400,
f"Invalid strategy. Must be one of: {', '.join([s.value for s in CacheStrategy])}",
)
# Invalida
success = await invalidate_cache(strategy, req.identifier)
return {
"ok": success,
"strategy": req.strategy,
"identifier": req.identifier,
"message": "Cache entry invalidated" if success else "Failed to invalidate cache entry",
}
except HTTPException:
raise
except Exception as exc:
_logger.error(f"Error invalidating cache: {exc}")
raise HTTPException(500, "Error invalidating cache")
# ── Endpoint: Health Check ────────────────────────────────────────────────
@router.get("/health", response_model=CacheHealthResponse)
async def cache_health():
"""Health check per il cache layer."""
try:
stats = get_cache_stats()
return CacheHealthResponse(
ok=True,
cache_enabled=CACHE_ENABLED,
message=f"Cache layer operational. Hit rate: {stats.get('hit_rate_percent', 0):.1f}%",
)
except Exception as exc:
_logger.error(f"Cache health check failed: {exc}")
return CacheHealthResponse(
ok=False,
cache_enabled=CACHE_ENABLED,
message=f"Cache health check failed: {str(exc)}",
)
# ── Endpoint: Reset Statistiche ───────────────────────────────────────────
@router.post("/reset-stats")
async def reset_stats():
"""Resetta le statistiche del cache."""
try:
reset_cache_stats()
return {
"ok": True,
"message": "Cache statistics reset",
}
except Exception as exc:
_logger.error(f"Error resetting cache stats: {exc}")
raise HTTPException(500, "Error resetting cache stats")
# ── Endpoint: Info Cache ──────────────────────────────────────────────────
@router.get("/info")
async def cache_info():
"""Ritorna informazioni sulla configurazione del cache."""
try:
from cache_manager import (
CACHE_ENABLED,
CACHE_TTL_DEFAULT,
CACHE_MAX_SIZE,
CACHE_TTL_BY_STRATEGY,
SUPABASE_A_URL,
SUPABASE_B_URL,
)
return {
"enabled": CACHE_ENABLED,
"ttl_default_seconds": CACHE_TTL_DEFAULT,
"max_size": CACHE_MAX_SIZE,
"ttl_by_strategy": {k.value: v for k, v in CACHE_TTL_BY_STRATEGY.items()},
"supabase_a_configured": bool(SUPABASE_A_URL),
"supabase_b_configured": bool(SUPABASE_B_URL),
}
except Exception as exc:
_logger.error(f"Error fetching cache info: {exc}")
raise HTTPException(500, "Error fetching cache info")
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