jscheffl commented on PR #63677:
URL: https://github.com/apache/airflow/pull/63677#issuecomment-4071059546
As I have the same demand, how about the following - just tried it and might
be a good option w/o needing this PR:
(1) Create a "pseudo Dag file", e.g. `__git_info__.py` in your Dags folder
like:
```
from __future__ import annotations
from airflow.models.variable import Variable
from airflow.sdk import DAG
# assume we read the needed info from git here...
GIT_INFO = {
"branch": "main",
"commit": "abc123",
"date": "2024-06-01T12:00:00Z",
}
Variable.set("git_info", GIT_INFO, serialize_json=True)
# Dummy something that Dag Parser will read this...
if isinstance("test", DAG):
pass
```
(Some code to be added to read GIT info thoug... but you have this at your
hands anyway...
Then use the following `airflow_local_settings.py` on your API server:
```
from __future__ import annotations
from cachetools import TTLCache, cached
from airflow.api_fastapi.common.types import UIAlert
from airflow.models.variable import Variable
@cached(cache=TTLCache(maxsize=1, ttl=60))
def get_dashboard_ui_alerts() -> str:
"""Get the list of UI alerts to be shown on the dashboard."""
git_info = Variable.get("git_info", default_var=None,
deserialize_json=True)
return f"Current Git branch: {git_info.get('branch')}, commit:
{git_info.get('commit')}, date: {git_info.get('date')}" if git_info else "No
Git info available."
class DynamicAlerts(list):
"""Dynamically load the list of UI alerts to be shown on the
dashboard."""
def __iter__(self):
yield UIAlert(text=get_dashboard_ui_alerts(), category="info")
DASHBOARD_UIALERTS = DynamicAlerts()
```
Yeah.. Variable might not be ideal but is cached for 60s at least... as long
as there are no other state structures available... (There is still an ongoing
discussion how to store e.g. state in triggerer.... but discussion is still
ongoing)
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