ashb commented on a change in pull request #6342: [AIRFLOW-5662] fix incorrect
naming and batch db call for scheduler metrics
URL: https://github.com/apache/airflow/pull/6342#discussion_r391559959
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File path: airflow/models/pool.py
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@@ -48,6 +50,45 @@ def get_pool(pool_name, session=None):
def get_default_pool(session=None):
return Pool.get_pool(Pool.DEFAULT_POOL_NAME, session=session)
+ @staticmethod
+ @provide_session
+ def slots_stats(session=None) -> Dict[str, Dict[str, int]]:
+ from airflow.models.taskinstance import TaskInstance # Avoid circular
import
+
+ pools = {}
+
+ pool_rows = session.query(Pool.pool, Pool.slots).all()
+ for (pool_name, total_slots) in pool_rows:
+ pools[pool_name] = {
+ "total": total_slots,
+ "used": 0,
+ "queued": 0,
+ }
+
+ state_count = (
+ session.query(TaskInstance.pool, TaskInstance.state, func.count())
+ .filter(TaskInstance.state.in_(STATES_TO_COUNT_AS_RUNNING))
+ .filter(TaskInstance.pool.in_(pools.keys()))
Review comment:
Is this conditional needed?
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