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[18.0] queue_job: job failed to be requeued or cancelled if function is removed while job not yet done

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評価

難易度
3/5
見積もり時間
1〜2日
初心者へのやさしさ
38/100
issue の種類
バグ
明瞭さ
おおむね明確
活発さ
静か
技術スタック
python
領域
backend

調査の方向性

The failure is in _change_job_state in queue_job/models/queue_job.py, which calls Job.load, and in _load_from_db_record in queue_job/job.py, where getattr(recordset, method_name) raises once the function is removed. Start by reading those two spots and deciding whether state-only actions (requeue, cancel, set done) can skip resolving the method. Done means those actions succeed on a job whose method no longer exists, with a test covering that case. The issue itself leaves the expected behaviour open, so check with maintainers first.

索引モデルが issue の本文から書いたものです。

説明

bug

Module

queue_job

Describe the bug

If a job having its function (job.method_name) removed, while being pending/enqueued or failed (maybe, I haven't double checked but I think loading failed jobs during initialization), the job runner will stuck trying to requeue the job as failing to load the job. Trying to cancel to unlink the job from UI will also fail due to the same reason.

To Reproduce

Affected versions: 18.0 but properly other versions too.

Steps to reproduce the behavior: Explained in the description.

Expected behavior
I don't really know whether this is truly a bug, or it's missing a reliable way to prevent this from happening, maybe it's a rule of thumb to not having function removed if it's used in queue job, but since function can be enqueue anywhere using with_delay or delayable(), it's hard to tell which functions are used with queue job. Unless we always define job as job function to allow enqueueing it.

A way to prevent this issue from happening without enforcing how to implement jobs or control the development is to not loading the job if we are just setting the state of it (requeue, cancel or set done).

Additional context
Below is where it fails, since method_name is removed, getattr simply break

  File "/opt/odoo/src/queue/queue_job/models/queue_job.py", line 309, in _change_job_state
    job_ = Job.load(record.env, record.uuid)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/odoo/src/queue/queue_job/job.py", line 213, in load
    return cls._load_from_db_record(stored)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/odoo/src/queue/queue_job/job.py", line 288, in _load_from_db_record
    method = getattr(recordset, method_name)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
主要言語
Python
スター
271
フォーク
602
平均マージ
4日 4時間
マージ済み PR(30日)
6

環境構築

はじめの一歩

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  2. 着手することを issue にコメントします — 二人が同じ作業をするのを防げます。
  3. リポジトリをフォークし、ブランチを切って変更します。
  4. issue 番号を参照したプルリクエストを送ります。

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