better logging for the api

Author: cyrilus

.env

@@ -1,5 +1,7 @@
 NB_WORKERS=6
 MAXTIME=120
 SECRET_KEY=DEFAULT_KEY
+## if you want to change the log level DEBUG INFO WARNING ERROR CRITICAL
+#LOG_LEVEL=INFO
 ## If you want to disable the hack for html line to make thing work when html start with <ul><li>
 #DISABLE_HTML_HACK=True

API/utils.py

@@ -2,7 +2,7 @@
 Copyright (C) 2023 Probesys
 """
 
-from flask import Response, send_file
+from flask import Response, send_file, current_app
 
 import lotemplate as ot
 
@@ -180,8 +180,7 @@ def fill_file(directory: str, file: str, json, error_caught=False) -> Union[tupl
     """
     if  isinstance(json, list):
         json=json[0]
-        print("####\nUsing a list of dict is DEPRECATED, you must directly send the dict.")
-        print("See documentation.\n#######")
+        current_app.logger.warning("DEPRECATED Using a list of dict is DEPRECATED, you must directly send the dict. See documentation.")
     cnx = connexion()
     global scannedjson
     try:

CHANGELOG.md

@@ -8,6 +8,9 @@ The upgrade documentation is in the file [UPGRADE.md](UPGRADE.md).
 Versions 2.x
 ------------
 
+- V2.2.2 : 2025-12-12
+    - add better logs for the api using logging
+
 - v2.2.1 : 2025-11-03
   - FIX : Sort variable to avoid sub string replacement
 

app.py

@@ -2,7 +2,7 @@
 Copyright (C) 2023 Probesys
 """
 
-from flask import Flask,request, jsonify,after_this_request,send_file 
+from flask import Flask,request, jsonify,after_this_request,send_file
 from werkzeug.utils import secure_filename
 
 import os
@@ -15,6 +15,10 @@
 from lotemplate import statistic_open_document,clean_old_open_document
 
 app = Flask(__name__)
+if os.getenv('LOG_LEVEL') :
+    app.logger.setLevel(os.getenv('LOG_LEVEL'))
+else:
+    app.logger.setLevel('ERROR')
 
 @app.route("/", methods=['PUT', 'GET'])
 def main_route():
@@ -111,7 +115,7 @@ def delete_tmp_file(response):
             try:
                 os.remove(file)
             except Exception:
-                print("Error delete file " + str(file))
+                app.logger.error("Error delete file " + str(file))
         return response
     if request.headers.get('secretkey', '') != os.environ.get('SECRET_KEY', ''):
         return utils.error_sim(
@@ -142,7 +146,6 @@ def delete_tmp_file(response):
     elif request.method == 'POST':
         if not request.json:
             return utils.error_sim('ApiError', 'missing_json', "You must provide a json in the body"), 400
-
         file ,response = utils.fill_file(directory, file, request.json)
         return response
     elif request.method == 'DELETE':

docker-compose.yml

@@ -13,4 +13,5 @@ services:
       - NB_WORKERS=$NB_WORKERS
       - MAXTIME=$MAXTIME
       - DISABLE_HTML_HACK=${DISABLE_HTML_HACK:-}
-    command: "gunicorn -b 0.0.0.0:8000 app:app"
+      - LOG_LEVEL=${LOG_LEVEL:-}
+    command: "gunicorn -b 0.0.0.0:8000  --access-logfile '-'  --access-logformat '%(h)s %(l)s %(u)s %(t)s  \"%(r)s\" %(s)s %(b)s \"%(f)s\" \"%(a)s\" %(M)s' app:app"