Microsoft/bcquality
1
0
Fork 0
mirror of https://github.com/microsoft/BCQuality.git synced 2026-10-06 23:26:55 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

knowledge(performance): add job queue reliability guidance

Browse source
This commit is contained in:
demiliani 2026-09-01 09:09:01 +02:00
parent 85ceaaa1a4
commit dbed0dc081
20 changed files with 488 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

28
community/knowledge/performance/job-queue-handlers-must-not-require-ui.md Normal file
View file

@ -0,0 +1,28 @@
---
bc-version: [all]
domain: performance
keywords: [job-queue, background-session, guiallowed, confirm, runmodal, client-callback]
technologies: [al]
countries: [w1]
application-area: [all]
---
# Job queue handlers must not require user interaction
> Contributions welcome — open a PR to refine or extend this article.
## Description
A job queue handler runs in a background session with no client UI. Calls that require a client callback, such as `Confirm`, `Page.RunModal`, `Report.RunModal`, upload, or download, can stop the job with a non-retriable callback error. `Message` is suppressed and logged by the server, so it cannot communicate a result to the user who scheduled the job.
## Best Practice
Make a dedicated job queue entry point non-interactive. Validate parameters and data in AL, persist business-visible status when needed, and let failures propagate to the job queue log. If one procedure genuinely serves both foreground and background callers, isolate optional UI-only behavior behind `GuiAllowed`; do not use the guard to silently skip a decision that the operation requires.
See sample: `job-queue-handlers-must-not-require-ui.good.al`.
## Anti Pattern
Calling `Confirm`, `Page.Run`, `Page.RunModal`, `Report.Run`, `Report.RunModal`, `Hyperlink`, `File.Upload`, or `File.Download` from a codeunit run by the job queue. Another signal is using `Message` as the only success or failure notification: no user is attached to receive it.
See sample: `job-queue-handlers-must-not-require-ui.bad.al`.