Added healthcheck

api/utils.py

@@ -7,6 +7,7 @@ from sqlalchemy.exc import DatabaseError
 import time
 from werkzeug.security import generate_password_hash
 
+db_ready = False
 
 def admin_required(user_id, message='Access denied.'):
     "Check if common user try to make administrative action."
@@ -33,10 +34,12 @@ def get_user_or_404(user_id):
 
 def wait_for_db(max_retries):
     "Try to connect with database <max_retries> times."
+    global db_ready
     for _ in range(max_retries):
         try:
             with db.engine.connect() as connection:
                 connection.execute(text("SELECT 1"))
+            db_ready = True
             return
         except DatabaseError:
             time.sleep(3)