Move secrets_masker over to airflow_shared distribution #54449

amoghrajesh · 2025-08-13T10:44:08Z

Why

As part of #51545, we are trying to avoid code duplication between airflow-core and task-sdk. The secrets masking functionality is widely used so that it can be moved to a shared library. This follows the pattern set by the timezone utilities migration(#53149) and ensures a single source of truth for secrets masking logic across Airflow codebase.

High level changes made

1. Created shared library structure

New directory: shared/secrets_masker/ with standard shared library layout
Project configuration: shared/secrets_masker/pyproject.toml defining apache-airflow-shared-secrets_masker
Source code: Moved from task-sdk/src/airflow/sdk/execution_time/secrets_masker.py to shared/secrets_masker/src/airflow_shared/secrets_masker/secrets_masker.py

2. Updated consuming packages

Workspace configuration: Added shared/secrets_masker to root pyproject.toml workspace members
Public API modules: Created task-sdk/src/airflow/sdk/secrets_masker.py that re-exports shared functionality
Import statements: Updated imports across airflow-core and task-sdk to use new shared paths

4. How the updates were made:

Pre-commit hooks: Leveraged existing check-shared-distributions-structure and check-shared-distributions-usage hooks
Symlinks: Automatic creation of symlinks from airflow/_shared/secrets_masker and airflow/sdk/_shared/secrets_masker
Force-include: Automated addition to pyproject.toml files for wheel packaging

Sanity tests

Symlink verification

# Verify symlinks exist and point to correct locations
(airflow) ➜  airflow git:(move-secrets-masker-to-shared) ✗ ls -la airflow-core/src/airflow/_shared/secrets_masker
ls -la task-sdk/src/airflow/sdk/_shared/secrets_masker
lrwxr-xr-x@ 1 amoghdesai  staff  67 Aug 13 15:59 airflow-core/src/airflow/_shared/secrets_masker -> ../../../../shared/secrets_masker/src/airflow_shared/secrets_masker
lrwxr-xr-x@ 1 amoghdesai  staff  70 Aug 13 15:59 task-sdk/src/airflow/sdk/_shared/secrets_masker -> ../../../../../shared/secrets_masker/src/airflow_shared/secrets_masker


# Check symlink targets
(airflow) ➜  airflow git:(move-secrets-masker-to-shared) ✗ readlink airflow-core/src/airflow/_shared/secrets_masker
readlink task-sdk/src/airflow/sdk/_shared/secrets_masker
../../../../shared/secrets_masker/src/airflow_shared/secrets_masker
../../../../../shared/secrets_masker/src/airflow_shared/secrets_masker

Shared library test in isolation

# Test shared library works independently
(airflow) ➜  airflow git:(move-secrets-masker-to-shared) ✗ cd shared/secrets_masker
PYTHONPATH=src python -c "
from airflow_shared.secrets_masker.secrets_masker import SecretsMasker
filt = SecretsMasker()
filt.add_mask('password')
print('✅ Shared library works in isolation')
"
✅ Shared library works in isolation

Import validation

# Test imports work from consuming packages
(airflow) ➜  secrets_masker git:(move-secrets-masker-to-shared) ✗python -c "from airflow.sdk.secrets_masker import SecretsMasker; print('✅ task-sdk import works')""
python -c "from airflow._shared.secrets_masker.secrets_masker import SecretsMasker; print('✅ airflow-core import works')"
✅ task-sdk import works
✅ airflow-core import works

Some tests for peace of mind

DAG used for testing some cases:

from __future__ import annotations

import logging

from airflow import DAG
from airflow.providers.standard.operators.empty import EmptyOperator
from airflow.providers.standard.operators.python import PythonOperator
from airflow.sdk import Variable, Connection


def my_function() -> None:
    conn = Connection.get("my_connection")
    logging.getLogger(__name__).info(conn.password)
    print("via print", conn.password)


with DAG("subprocess_dag") as dag:
    start = EmptyOperator(task_id="start")

    py_func = PythonOperator(task_id="py_func", python_callable=my_function)

    end = EmptyOperator(task_id="end")

    start >> py_func >> end

Env set:

export AIRFLOW_CONN_MY_CONNECTION="mysql://testuser:testpassword123@localhost:3306/testdb

Running a task through CLI: airflow tasks test subprocess_dag py_fu

[2025-08-21T07:52:11.216+0000] {dag.py:2329} INFO - created dagrun <DagRun subprocess_dag @ None: __airflow_temporary_run_2025-08-21T07:52:11.207333+00:00__, state:running, queued_at: None. run_type: manual>
[2025-08-21T07:52:11.222+0000] {dag.py:1293} INFO - [DAG TEST] starting task_id=py_func map_index=-1
[2025-08-21T07:52:11.680+0000] {dag.py:1296} INFO - [DAG TEST] running task <TaskInstance: subprocess_dag.py_func __airflow_temporary_run_2025-08-21T07:52:11.207333+00:00__ [None]>
2025-08-21 07:52:12 [debug    ] Starting task instance run     hostname=e2cc5b7dc023 pid=450 ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022 unixname=root
2025-08-21 07:52:12 [debug    ] Retrieved task instance details dag_id=subprocess_dag state=queued task_id=py_func ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022
2025-08-21 07:52:12 [info     ] Task started                   hostname=e2cc5b7dc023 previous_state=queued ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022
2025-08-21 07:52:12 [info     ] Task instance state updated    rows_affected=1 ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022
[2025-08-21T07:52:12.497+0000] {_client.py:1025} INFO - HTTP Request: PATCH http://in-process.invalid./task-instances/0198cb9d-28d2-7800-82b0-7161dc72f022/run "HTTP/1.1 200 OK"
2025-08-21 07:52:12 [debug    ] Sending request                msg=SetRenderedFields(rendered_fields={'templates_dict': None, 'op_args': [], 'op_kwargs': {}}, type='SetRenderedFields')
2025-08-21 07:52:12 [debug    ] Received message from task runner [supervisor] msg=SetRenderedFields(rendered_fields={'templates_dict': None, 'op_args': [], 'op_kwargs': {}}, type='SetRenderedFields')
2025-08-21 07:52:12 [info     ] Updating RenderedTaskInstanceFields field_count=3 ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022
2025-08-21 07:52:12 [debug    ] RenderedTaskInstanceFields updated successfully ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022
[2025-08-21T07:52:12.509+0000] {_client.py:1025} INFO - HTTP Request: PUT http://in-process.invalid./task-instances/0198cb9d-28d2-7800-82b0-7161dc72f022/rtif "HTTP/1.1 201 Created"
2025-08-21 07:52:12 [debug    ] Sending request                msg=MaskSecret(value='***', name=None, type='MaskSecret')
2025-08-21 07:52:12 [debug    ] Received message from task runner (body omitted) [supervisor] msg=<class 'airflow.sdk.execution_time.comms.MaskSecret'>
[2025-08-21T07:52:12.513+0000] {subprocess_mask_var.py:13} INFO - ***
via print ***
[2025-08-21T07:52:12.513+0000] {python.py:218} INFO - Done. Returned value was: None
2025-08-21 07:52:12 [debug    ] Sending request                msg=SucceedTask(state='success', end_date=datetime.datetime(2025, 8, 21, 7, 52, 12, 513546, tzinfo=datetime.timezone.utc), task_outlets=[], outlet_events=[], rendered_map_index=None, type='SucceedTask')
2025-08-21 07:52:12 [debug    ] Received message from task runner [supervisor] msg=SucceedTask(state='success', end_date=datetime.datetime(2025, 8, 21, 7, 52, 12, 513546, tzinfo=datetime.timezone.utc), task_outlets=[], outlet_events=[], rendered_map_index=None, type='SucceedTask')
2025-08-21 07:52:12 [debug    ] Updating task instance state   new_state=success ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022
2025-08-21 07:52:12 [debug    ] Retrieved current task instance state max_tries=0 previous_state=running ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022 try_number=0
2025-08-21 07:52:12 [info     ] Task instance state updated    new_state=success rows_affected=1 ti_id=0198cb9d-28d2-7800-82b0-7161dc72f022
[2025-08-21T07:52:12.522+0000] {_client.py:1025} INFO - HTTP Request: PATCH http://in-process.invalid./task-instances/0198cb9d-28d2-7800-82b0-7161dc72f022/state "HTTP/1.1 204 No Content"
2025-08-21 07:52:12 [debug    ] Running finalizers             [task] ti=RuntimeTaskInstance(id=UUID('0198cb9d-28d2-7800-82b0-7161dc72f022'), task_id='py_func', dag_id='subprocess_dag', run_id='__airflow_temporary_run_2025-08-21T07:52:11.207333+00:00__', try_number=0, dag_version_id=UUID('0198cb9b-d3d6-74f3-a561-083d897ed8cd'), map_index=-1, hostname='e2cc5b7dc023', context_carrier=None, task=<Task(PythonOperator): py_func>, max_tries=0, start_date=datetime.datetime(2025, 8, 21, 7, 52, 11, 880733, tzinfo=datetime.timezone.utc), end_date=datetime.datetime(2025, 8, 21, 7, 52, 12, 513546, tzinfo=datetime.timezone.utc), state=<TaskInstanceState.SUCCESS: 'success'>, is_mapped=False, rendered_map_index=None, log_url=None)

This is specifically to test the recent issue: 1f4c55c

Running a trigger with a dag that will log using dag processor, root logger, structlog etc

Trigger:

from __future__ import annotations

import asyncio
import logging

import structlog

from airflow.sdk import Connection, Variable
from airflow.sdk.log import mask_secret
from airflow.triggers.base import BaseTrigger, TriggerEvent


print(f"{__file__=} loaded")


class CustomTrigger(BaseTrigger):
    async def run(self, **args):
        from asgiref.sync import sync_to_async

        await sync_to_async(Variable.set)("my_api_key", "password1")
        x = await sync_to_async(Variable.get)("my_api_key")

        logging.getLogger(__name__).info("my_api_key=%s", x)
        secret = "some-secret-value"
        await sync_to_async(mask_secret)(secret)
        await sync_to_async(mask_secret)("some-secret-value")

        logging.getLogger(__name__).info("after manual mask %s", secret)

        await structlog.get_logger().ainfo("Testing structlog", val=secret, api_key="abcdef", x=x)

        yield TriggerEvent({"Hi": "from trigger"})

    def serialize(self):
        return (
            f"{type(self).__module__}.{type(self).__qualname__}",
            {},
        )

DAG:

from airflow.exceptions import AirflowRescheduleException, TaskDeferred
from airflow.sdk import dag, task
from airflow.sdk import Variable
import logging

x = Variable.get("toplevel_api_key", default="secret_api")
print(f"{x=}")
logging.root.info("toplevel=%s", x)

@dag()
def trigger_a_gag():
    @task
    def trigger(event=None) -> None:
        if event:
            print(event)
        else:
            from triggera import CustomTrigger
            raise TaskDeferred(trigger=CustomTrigger(), method_name="execute")

    trigger()


trigger_a_gag()

Logs:

[2025-08-21, 13:24:55] INFO - __file__='/files/plugins/triggera.py' loaded: chan="stdout": source="task"
[2025-08-21, 13:24:55] INFO - DAG bundles loaded: dags-folder: source="airflow.dag_processing.bundles.manager.DagBundlesManager"
[2025-08-21, 13:24:55] INFO - Filling up the DagBag from /files/dags/reschedule-dag.py: source="airflow.models.dagbag.DagBag"
[2025-08-21, 13:24:55] INFO - toplevel=***: source="root"
[2025-08-21, 13:24:55] INFO - x='***': chan="stdout": source="task"
[2025-08-21, 13:24:55] INFO - Pausing task as DEFERRED. : dag_id="trigger_a_gag": task_id="trigger": run_id="manual__2025-08-21T07:54:54.321189+00:00": source="task"
[2025-08-21, 13:24:57] INFO - trigger trigger_a_gag/manual__2025-08-21T07:54:54.321189+00:00/trigger/-1/1 (ID 1) starting
[2025-08-21, 13:24:59] INFO - my_api_key=***: source="triggera"
[2025-08-21, 13:24:59] INFO - after manual mask ***: source="triggera"
[2025-08-21, 13:24:59] INFO - Testing structlog: val="***": api_key="***": x="***"
[2025-08-21, 13:24:59] INFO - Trigger fired event: name="trigger_a_gag/manual__2025-08-21T07:54:54.321189+00:00/trigger/-1/1 (ID 1)": result="TriggerEvent<{'Hi': 'from trigger'}>"
[2025-08-21, 13:24:59] INFO - trigger completed: name="trigger_a_gag/manual__2025-08-21T07:54:54.321189+00:00/trigger/-1/1 (ID 1)"
[2025-08-21, 13:25:00] INFO - __file__='/files/plugins/triggera.py' loaded: chan="stdout": source="task"
[2025-08-21, 13:25:00] INFO - DAG bundles loaded: dags-folder: source="airflow.dag_processing.bundles.manager.DagBundlesManager"
[2025-08-21, 13:25:00] INFO - Filling up the DagBag from /files/dags/reschedule-dag.py: source="airflow.models.dagbag.DagBag"
[2025-08-21, 13:25:00] INFO - toplevel=***: source="root"
[2025-08-21, 13:25:00] INFO - x='***': chan="stdout": source="task"
[2025-08-21, 13:25:00] ERROR - Task failed with exception: source="task"

TODO next

Update occurences of these imports in providers
Update these occurrences in docs if any

^ Add meaningful description above
Read the Pull Request Guidelines for more information.
In case of fundamental code changes, an Airflow Improvement Proposal (AIP) is needed.
In case of a new dependency, check compliance with the ASF 3rd Party License Policy.
In case of backwards incompatible changes please leave a note in a newsfragment file, named {pr_number}.significant.rst or {issue_number}.significant.rst, in airflow-core/newsfragments.

shared/secrets_masker/tests/secrets_masker/test_secrets_masker.py

amoghrajesh · 2025-08-22T12:05:29Z

@kaxil / @potiuk thanks for your reviews, I have handled all / most of your comments, could you take a look when possible?

@potiuk added the CI job for this too

amoghrajesh · 2025-08-22T12:05:57Z

The CI job is finally green: https://github.com/apache/airflow/actions/runs/17154718454/job/48668823304?pr=54449

potiuk

Wonderful!

kaxil

Some comments to be addressed but high-level is fine

amoghrajesh · 2025-08-23T05:18:29Z

Good lord, that was a big one with changes in many areas including precommits etc! Thanks for your reviews @potiuk and @kaxil! The tooling is awesome (even more so with the improvements now) for shared library bootstrapping! Merging this and will be handling the open comments in #54859 and resolve it soon

potiuk · 2025-08-23T12:58:27Z

Good lord, that was a big one with changes in many areas including precommits etc! Thanks for your reviews @potiuk and @kaxil! The tooling is awesome (even more so with the improvements now) for shared library bootstrapping! Merging this and will be handling the open comments in #54859 and resolve it soon

Indeed. I am very happy with the tooling :). And with #54863 we have small common test framework for the shared distributions as well :)

Move secrets_masker over to airflow_shared distribution

36d72c2

amoghrajesh requested review from XD-DENG, ashb, bolkedebruin, bugraoz93, dstandish, eladkal, ephraimbuddy, hussein-awala, jason810496, jedcunningham, kaxil, o-nikolas, pierrejeambrun, rawwar and shubhamraj-git as code owners August 13, 2025 10:44

boring-cyborg bot added area:API Airflow's REST/HTTP API area:CLI area:ConfigTemplates area:DAG-processing area:logging area:providers area:serialization area:task-sdk area:Triggerer provider:amazon AWS/Amazon - related issues labels Aug 13, 2025

amoghrajesh requested review from potiuk and removed request for XD-DENG, bolkedebruin and bugraoz93 August 13, 2025 10:46

amoghrajesh added 11 commits August 22, 2025 11:46

review 1 from kaxil

2c81740

removing masking from processor

4a87939

public variable

dcbe01b

fixing pyprojects

635b21d

adding workflow for shared masker

8638f1b

:facepalm

7853f62

fix runner

2414958

correct name of library with normalize changes

e3025fd

wrong name

cb78a2a

cleaning code up

4b28b83

add pydantic as dependency

632db50

amoghrajesh commented Aug 22, 2025

View reviewed changes

shared/secrets_masker/tests/secrets_masker/test_secrets_masker.py Show resolved Hide resolved

fixing tests

b399d45

amoghrajesh requested review from kaxil and potiuk August 22, 2025 13:41

potiuk approved these changes Aug 22, 2025

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kaxil approved these changes Aug 22, 2025

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amoghrajesh mentioned this pull request Aug 23, 2025

Revisit backcompat of secrets masker imports in airflow local settings before 3.1 #54859

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amoghrajesh merged commit 7982542 into apache:main Aug 23, 2025
194 checks passed

amoghrajesh deleted the move-secrets-masker-to-shared branch August 23, 2025 05:18

github-project-automation bot moved this from In Progress to Done in AIP-72 - Task Execution Interface and SDK Aug 23, 2025

amoghrajesh mentioned this pull request Aug 25, 2025

Adding a compat shim for secrets_masker that was moved to shared #54915

Merged

mangal-vairalkar pushed a commit to mangal-vairalkar/airflow that referenced this pull request Aug 30, 2025

Move secrets_masker over to airflow_shared distribution (apache#54449)

5f0f6db

eladkal mentioned this pull request Sep 5, 2025

Status of testing Providers that were prepared on September 05, 2025 #55285

Closed

amoghrajesh mentioned this pull request Nov 27, 2025

Redact secrets in rendered templates properly to not expose them on UI #58767

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amoghrajesh mentioned this pull request Dec 17, 2025

Redact secrets in rendered templates properly when truncating it #59566

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Move secrets_masker over to airflow_shared distribution #54449

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Why

High level changes made

1. Created shared library structure

2. Updated consuming packages

4. How the updates were made:

Sanity tests

Symlink verification

Shared library test in isolation

Import validation

Some tests for peace of mind

TODO next

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