Some minor config tweaks to try and deal with some database timeout issues.

config/default.py

@@ -26,10 +26,14 @@ DB_PORT = environ.get('DB_PORT', default="5432")
 DB_NAME = environ.get('DB_NAME', default="crc_dev")
 DB_USER = environ.get('DB_USER', default="crc_user")
 DB_PASSWORD = environ.get('DB_PASSWORD', default="crc_pass")
+SQLALCHEMY_ENGINE_OPTIONS = {"pool_pre_ping": True}   # May help with some disconnect issues.
+SQLALCHEMY_TRACK_MODIFICATIONS = False
 SQLALCHEMY_DATABASE_URI = environ.get(
     'SQLALCHEMY_DATABASE_URI',
     default="postgresql://%s:%s@%s:%s/%s" % (DB_USER, DB_PASSWORD, DB_HOST, DB_PORT, DB_NAME)
 )
+
+
 TOKEN_AUTH_TTL_HOURS = float(environ.get('TOKEN_AUTH_TTL_HOURS', default=24))
 SECRET_KEY = environ.get('SECRET_KEY', default="Shhhh!!! This is secret!  And better darn well not show up in prod.")
 FRONTEND_AUTH_CALLBACK = environ.get('FRONTEND_AUTH_CALLBACK', default="http://localhost:4200/session")

crc/__init__.py

@@ -19,7 +19,6 @@ connexion_app = connexion.FlaskApp(__name__)
 
 app = connexion_app.app
 app.config.from_object('config.default')
-app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
 
 if "TESTING" in os.environ and os.environ["TESTING"] == "true":
     app.config.from_object('config.testing')
@@ -28,6 +27,7 @@ else:
     app.config.root_path = app.instance_path
     app.config.from_pyfile('config.py', silent=True)
 
+
 db = SQLAlchemy(app)
 """:type: sqlalchemy.orm.SQLAlchemy"""