60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
|
"""
|
||
|
|
API 依赖注入
|
||
|
|
模型懒加载 + 并发控制
|
||
|
|
"""
|
||
|
|
import asyncio
|
||
|
|
from typing import Optional
|
||
|
|
|
||
|
|
from app.config.paths import get_logger
|
||
|
|
|
||
|
|
logger = get_logger("api")
|
||
|
|
|
||
|
|
# ============================================================
|
||
|
|
# 并发控制：限制同时进行的预测任务数，防止资源耗尽
|
||
|
|
# ============================================================
|
||
|
|
MAX_CONCURRENT_PREDICTIONS = 8
|
||
|
|
_prediction_semaphore: Optional[asyncio.Semaphore] = None
|
||
|
|
|
||
|
|
|
||
|
|
def get_prediction_semaphore() -> asyncio.Semaphore:
|
||
|
|
"""获取预测信号量（惰性初始化，兼容事件循环）"""
|
||
|
|
global _prediction_semaphore
|
||
|
|
if _prediction_semaphore is None:
|
||
|
|
_prediction_semaphore = asyncio.Semaphore(MAX_CONCURRENT_PREDICTIONS)
|
||
|
|
return _prediction_semaphore
|
||
|
|
|
||
|
|
|
||
|
|
# ============================================================
|
||
|
|
# 模型单例（启动时加载一次）
|
||
|
|
# ============================================================
|
||
|
|
_rainfall_model = None
|
||
|
|
_earthquake_model = None
|
||
|
|
|
||
|
|
|
||
|
|
def get_rainfall_model():
|
||
|
|
"""获取暴雨DBN模型单例"""
|
||
|
|
global _rainfall_model
|
||
|
|
if _rainfall_model is None:
|
||
|
|
from app.models.dbn.rainfall.rainfall_dbn import RainfallDBN
|
||
|
|
_rainfall_model = RainfallDBN()
|
||
|
|
logger.info("暴雨DBN模型加载完成")
|
||
|
|
return _rainfall_model
|
||
|
|
|
||
|
|
|
||
|
|
def get_earthquake_model():
|
||
|
|
"""获取地震DBN模型单例"""
|
||
|
|
global _earthquake_model
|
||
|
|
if _earthquake_model is None:
|
||
|
|
from app.models.dbn.earthquake.earthquake_dbn import EarthquakeDBN
|
||
|
|
_earthquake_model = EarthquakeDBN()
|
||
|
|
logger.info("地震DBN模型加载完成")
|
||
|
|
return _earthquake_model
|
||
|
|
|
||
|
|
|
||
|
|
def is_model_loaded() -> dict:
|
||
|
|
"""检查模型加载状态"""
|
||
|
|
return {
|
||
|
|
"rainfall_model_loaded": _rainfall_model is not None,
|
||
|
|
"earthquake_model_loaded": _earthquake_model is not None,
|
||
|
|
}
|