XD-DENG commented on a change in pull request #4309: [AIRFLOW-3504]
Extend/refine the functionality of "/health" endpoint
URL: https://github.com/apache/airflow/pull/4309#discussion_r246398014
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File path: airflow/www/blueprints.py
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@@ -32,6 +37,26 @@ def index():
@routes.route('/health')
def health():
- """ We can add an array of tests here to check the server's health """
- content = Markup(markdown.markdown("The server is healthy!"))
- return content
+ session = settings.Session()
+ DM = models.DagModel
+ payload = {}
+
+ latest_scheduler_run = None
+ payload['metadatabase'] = {'status': 'healthy'}
+ try:
+ latest_scheduler_run =
session.query(func.max(DM.last_scheduler_run)).scalar()
+ except Exception as _:
+ payload['metadatabase']['status'] = 'unhealthy'
+
+ if not latest_scheduler_run:
+ scheduler_status = 'unhealthy'
+ else:
+ if timezone.utcnow() - latest_scheduler_run <= timedelta(seconds=30):
Review comment:
I have put this threshold into `airflow.cfg` as a configuration item, with
default value 30 seconds.
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