kaxil opened a new pull request, #53655:
URL: https://github.com/apache/airflow/pull/53655
Add `get_previous_dagrun` method to RuntimeTaskInstance to replace the
removed `DagRun.get_previous_dagrun()` method from Airflow 2.x. This enables
users to access previous DAG run information from task context for conditional
logic like notifications on state changes.
Changes:
- Add `GetPreviousDagRun` message and `PreviousDagRunResult` response in
comms
- Add `get_previous_dagrun` instance method to `RuntimeTaskInstance`
- Add `/dag-runs/{dag_id}/previous` API endpoint with optional state
filtering
- Add `get_previous` method to DagRunOperations API client
- Update supervisor to handle `GetPreviousDagRun` messages
Usage:
```python
def my_task(context):
ti = context["ti"]
previous_run = ti.get_previous_dagrun()
if previous_run:
# Access previous run metadata
print(f"Previous run: {previous_run.dag_run.run_id}")
```
**ToDo**:
- [ ] Add Cadwyn migration
- [ ] Remove defaults when sending serialized object to buffer
Fixes #53628
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