add health endpoint

src/app.py

@@ -5,12 +5,13 @@ from flask_restful import Api
 import sentry_sdk
 from sentry_sdk.integrations.flask import FlaskIntegration
 from sentry_sdk.integrations.sqlalchemy import SqlalchemyIntegration
-
+from healthcheck import HealthCheck
 
 from config import *
 from db import db
 from marshm import ma
 from resources import SampleResource, SampleParameterResource
+from healthchecks import health_database_status
 
 """
 Main Flask RESTful APIm
@@ -42,6 +43,7 @@ app.config['FLASK_PIKA_PARAMS'] = {'host': RABBITMQ_HOST,
                                    'port': 5672,
                                    'virtual_host': '/'}
 api = Api(app)
+health = HealthCheck(app, "/healthz")
 db.init_app(app)
 ma.init_app(app)
 
@@ -62,6 +64,7 @@ logger.addHandler(handler)
 api.add_resource(SampleResource, "/sample")
 api.add_resource(SampleParameterResource, '/sample/<tag>')
 
+health.add_check(health_database_status)
 
 if __name__ == "__main__":
     app.run(