Add log configuration to flask api

api_rest/gunicorn.py

@@ -1,12 +1,31 @@
 # -*- coding: utf-8 -*-
+import logging
+from logging.handlers import RotatingFileHandler
 import multiprocessing
 import os
 from distutils.util import strtobool
 
 bind = f"0.0.0.0:{os.getenv('PORT', '8000')}"
-accesslog = "-"
+
+if not os.path.exists('logs'):
+    os.makedirs('logs')
+accesslog = "logs/access.log"
 access_log_format = "%(h)s %(l)s %(u)s %(t)s '%(r)s' %(s)s %(b)s '%(f)s' '%(a)s' in %(D)sµs"  # noqa: E501
 
+access_logger = logging.getLogger('gunicorn.access')
+access_handler = RotatingFileHandler(
+    accesslog, maxBytes=1024 * 1024 * 100, backupCount=5)
+access_logger.addHandler(access_handler)
+
+errorlog = 'logs/app.log'
+error_logger = logging.getLogger('gunicorn.error')
+error_handler = RotatingFileHandler(
+    errorlog, maxBytes=1024 * 1024 * 100, backupCount=5)
+error_logger.addHandler(error_handler)
+
+if (os.environ.get('FLASK_DEBUG') == 'true'):
+    loglevel = 'debug'
+
 workers = int(os.getenv("WEB_CONCURRENCY", multiprocessing.cpu_count() * 2))
 threads = int(os.getenv("PYTHON_MAX_THREADS", 1))