fix: logging on gunicorn

fixes #4

.env.example

@@ -6,7 +6,6 @@ ROLES_PATH="data/roles.json"
 STATIC_DIR="data/static/"
 MAX_FILE_UPLOAD_LENGTH="16777216"
 
-LOG_LEVEL="INFO"
 LOGS_PATH="data/logs/app.log"
 
 ADMIN_USERNAME="admin"

Dockerfile

@@ -8,4 +8,4 @@ EXPOSE 8000
 RUN chmod u+x entrypoint.sh
 
 ENTRYPOINT [ "./entrypoint.sh" ]
-CMD ["gunicorn", "--bind", "0.0.0.0:8000", "app:create_app()"]
+CMD ["gunicorn", "--bind", "0.0.0.0:8000", "app:create_app()", "--log-level", "info", "--access-logfile", "/hs-api/data/logs/access.log", "--error-logfile", "/hs-api/data/logs/error.log"]

app/__init__.py

@@ -11,6 +11,7 @@
 from app.extensions import roles_handler
 from app.extensions import logos_handler
 
+
 def create_app(config_class=Config):
     flask_app = Flask(__name__)
     flask_app.config.from_object(config_class)
@@ -76,19 +77,22 @@ def register_commands(app: Flask):
     register_create_admin_user_command(app)
 
 def setup_logger(app: Flask):
+    """ 
+    If ran with gunicorn simply sets Flask logger to gunicorn ones, configured through cli arguments. 
+    If ran with Flask development server simply logs at debug level or default to stdout. """
+    if app.debug:
+        app.logger.setLevel(logging.DEBUG)
+        return 
+
+    # create logs folder
     logs_path = app.config.get("LOGS_PATH")
-    if app.debug or logs_path == basedir: # don't set logger in debug or if not log file
-        return
-
-    levels = {"DEBUG": logging.DEBUG, "INFO": logging.INFO, "WARNING": logging.WARNING}
-
     log_dir = os.path.dirname(logs_path)
     if not os.path.exists(log_dir):
         os.makedirs(log_dir)
 
-    app.logger.setLevel(levels[app.config.get("LOG_LEVEL")])
-    handler = logging.FileHandler(logs_path)
-    BASIC_FORMAT = "[%(asctime)s] %(levelname)s [%(name)s.%(funcName)s:%(lineno)d] %(message)s"  
-    handler.setFormatter(logging.Formatter(BASIC_FORMAT))
-    app.logger.addHandler(handler)
-    logging.getLogger("werkzeug").addHandler(handler)  # Root logger for all logs
+    # ran in gunicorn, use gunicorn handlers set through cli arguments
+    if __name__ != '__main__':
+        gunicorn_logger = logging.getLogger('gunicorn.error')
+        app.logger.handlers = gunicorn_logger.handlers
+        app.logger.setLevel(gunicorn_logger.level)
+        return

app/config.py

@@ -41,12 +41,11 @@ class Config:
     MAX_CONTENT_LENGTH = _get_int_env_or_default("MAX_FILE_UPLOAD_LENGTH", 16 * 1024 * 1024)
 
     LOGS_PATH = os.path.join(basedir, _get_env_or_default("LOGS_PATH", ""))
-    LOG_LEVEL = _get_env_or_default("LOG_LEVEL", "INFO")
 
     FRONTEND_ORIGIN = _get_env_or_default("FRONTEND_ORIGIN", "http://localhost:3000")
 
-    ADMIN_USERNAME = _get_env_or_default("ADMIN_USERNAME", "admin")
-    ADMIN_PASSWORD = _get_env_or_default("ADMIN_PASSWORD", "admin")
+    ADMIN_USERNAME = _get_env_or_default("ADMIN_USERNAME", "")
+    ADMIN_PASSWORD = _get_env_or_default("ADMIN_PASSWORD", "")
 
     CLIENT_ID = _get_env_or_default("CLIENT_ID", "")
     CLIENT_SECRET = _get_env_or_default("CLIENT_SECRET", "")

docker-compose.yaml

@@ -12,8 +12,7 @@ services:
       - STATIC_DIR=data/static/
       - ROLES_PATH=data/roles.json
       - SESSION_DIR=data/flask_sessions/
-      - LOGS_PATH=data/logs/app.log
-      - LOG_LEVEL=INFO
+      - LOGS_PATH=data/logs/
       - MAX_FILE_UPLOAD_LENGTH=16777216
       - CLIENT_ID=
       - CLIENT_SECRET=