feat: add file log (#3612)

Co-authored-by: liuzhenghua-jk <liuzhenghua-jk@360shuke.com>

api/app.py

@@ -1,4 +1,6 @@
 import os
+import sys
+from logging.handlers import RotatingFileHandler
 
 if not os.environ.get("DEBUG") or os.environ.get("DEBUG").lower() != 'true':
     from gevent import monkey
@@ -86,7 +88,25 @@ def create_app(test_config=None) -> Flask:
 
     app.secret_key = app.config['SECRET_KEY']
 
-    logging.basicConfig(level=app.config.get('LOG_LEVEL', 'INFO'))
+    log_handlers = None
+    log_file = app.config.get('LOG_FILE')
+    if log_file:
+        log_dir = os.path.dirname(log_file)
+        os.makedirs(log_dir, exist_ok=True)
+        log_handlers = [
+            RotatingFileHandler(
+                filename=log_file,
+                maxBytes=1024 * 1024 * 1024,
+                backupCount=5
+            ),
+            logging.StreamHandler(sys.stdout)
+        ]
+    logging.basicConfig(
+        level=app.config.get('LOG_LEVEL'),
+        format=app.config.get('LOG_FORMAT'),
+        datefmt=app.config.get('LOG_DATEFORMAT'),
+        handlers=log_handlers
+    )
 
     initialize_extensions(app)
     register_blueprints(app)

api/config.py

@@ -38,6 +38,9 @@ DEFAULTS = {
     'QDRANT_CLIENT_TIMEOUT': 20,
     'CELERY_BACKEND': 'database',
     'LOG_LEVEL': 'INFO',
+    'LOG_FILE': '',
+    'LOG_FORMAT': '%(asctime)s.%(msecs)03d %(levelname)s [%(threadName)s] [%(filename)s:%(lineno)d] - %(message)s',
+    'LOG_DATEFORMAT': '%Y-%m-%d %H:%M:%S',
     'HOSTED_OPENAI_QUOTA_LIMIT': 200,
     'HOSTED_OPENAI_TRIAL_ENABLED': 'False',
     'HOSTED_OPENAI_TRIAL_MODELS': 'gpt-3.5-turbo,gpt-3.5-turbo-1106,gpt-3.5-turbo-instruct,gpt-3.5-turbo-16k,gpt-3.5-turbo-16k-0613,gpt-3.5-turbo-0613,gpt-3.5-turbo-0125,text-davinci-003',
@@ -107,6 +110,9 @@ class Config:
         self.DEPLOY_ENV = get_env('DEPLOY_ENV')
         self.TESTING = False
         self.LOG_LEVEL = get_env('LOG_LEVEL')
+        self.LOG_FILE = get_env('LOG_FILE')
+        self.LOG_FORMAT = get_env('LOG_FORMAT')
+        self.LOG_DATEFORMAT = get_env('LOG_DATEFORMAT')
 
         # The backend URL prefix of the console API.
         # used to concatenate the login authorization callback or notion integration callback.