+ @api.route('/healthcheck', methods=['GET'])

+ def healthcheck():

+     """

+     Request handler for performing an application-level health check. This is

+     not part of the published API, it is intended for use by OpenShift or other

+     monitoring tools.

+ 

+     Returns a 200 response if the application is alive and able to serve requests.

+     """

+     try:

+         db.session.execute("SELECT 1 FROM result LIMIT 0").fetchall()

+     except Exception:

+         app.logger.exception('Healthcheck failed on DB query.')

+         return jsonify({"message": 'Unable to communicate with database'}), 503

+ 

+     return jsonify({"message": 'Health check OK'}), 200

+ 

+ 

+ 

+     def test_healthcheck_success(self):

+         r = self.app.get('/api/v2.0/healthcheck')

+         assert r.status_code == 200

+ 

+         data = json.loads(r.data)

+         assert data.get('message') == 'Health check OK'

+ 

+     def test_healthcheck_fail(self):

+         resultsdb.db.session.execute('DROP TABLE result')

+         r = self.app.get('/api/v2.0/healthcheck')

+         assert r.status_code == 503

+ 

+         data = json.loads(r.data)

+         assert data.get('message') == 'Unable to communicate with database'