新增对reload信号的处理，实现对systemctl reload的响应

main.py

@@ -3,14 +3,36 @@ from fastapi.responses import StreamingResponse, HTMLResponse
 from typing import List
 import base64
 import openai
+import signal
 
 app = FastAPI()
-with open("key", "r") as k:
+key = ""
-    key = k.read()
+prompt = ""
+
+
+def get_key():
+    with open("key", "r") as f:
+        k = f.read()
+    return k
+
+
+def get_prompt():
+    with open("prompt", "r", encoding="utf-8") as f:
+        p = f.read()
+    return p
+
+
+def load_config():
+    global key, prompt
+    key = get_key()
+    prompt = get_prompt()
+
+
+signal.signal(signal.SIGHUP, load_config())
+
+load_config()
 client = openai.OpenAI(api_key=key,
                        base_url="https://open.bigmodel.cn/api/paas/v4/")
-with open("prompt", "r", encoding="utf-8") as p:
-    prompt = p.read()
 
 
 # WebSocket连接管理器
@@ -67,7 +89,7 @@ async def predict(file: UploadFile = File(...)):
                 "content": [
                     {
                         "type": "text",
-                        "text": prompt,
+                        "text": get_prompt(),
                     },
                     {
                         "type": "image_url",