Add cockroachdb config and module

Author: israelias

Diff for: backend/app.py

@@ -23,7 +23,6 @@
 from resources.user import UserAPI, UsersAPI, user_ns, users_ns
 
 
-
 # Heroku-specific postgresql config
 # uri = os.getenv("DATABASE_URL")
 # if uri and uri.startswith("postgres://"):
@@ -61,7 +60,10 @@
     app.config["SQLALCHEMY_DATABASE_URI"] = "sqlite:///" + os.path.join(basedir, "db.sqlite")
 else:
     # Production DB
+    from sqlalchemy import create_engine
     app.config["SQLALCHEMY_DATABASE_URI"] = os.environ.get("DATABASE_URL")
+    engine = create_engine(os.environ['DATABASE_URL'])
+    engine.connect()
 # Apply db settings
 app.config["SQLALCHEMY_TRACK_MODIFICATIONS"] = False
 app.config["PROPAGATE_EXCEPTIONS"] = True

Diff for: backend/requirements.txt

@@ -28,6 +28,7 @@ pytz==2021.1
 regex==2021.4.4
 six==1.16.0
 SQLAlchemy==1.4.17
+sqlalchemy-cockroachdb==1.4.4
 toml==0.10.2
 typing==3.7.4.3
 Werkzeug==0.16.1