fleet/changes/21073-deleting-ios-host
Victor Lyuboslavsky 734357af14
Deleting an ABM iOS/iPadOS host keeps it in Fleet. (#21433)
#21073 
- Deleted iOS/iPadOS host will continue to report to Fleet as long as
host is in Apple Business Manager (ABM).
- Refetching an offline iOS/iPadOS host will not add new MDM commands to
the queue if previous refetch has not completed yet.

Video demo:
https://www.loom.com/share/2f7ecb22e1924d4cbbbdd7dd297439ef?sid=dbfe1939-cb46-47ca-a7a8-84965ed68a7e

I considered `nano_command_results` but could not think of an efficient
way to use `nano_command_results` to determine if refetch was already
done. The problem is that we're overloading `command_uuid` to include
the `REFETCH` identifier. So we can't simply add an index on `(uuid,
command_uuid, updated_at)`. We need to do a partial text match on
`command_uuid` which then requires a full scan of the matching
`updated_at` timestamps. It feels like a search like this could blow up
for a large `nano_enrollment_queue` and `nano_command_results` table.

# Checklist for submitter

If some of the following don't apply, delete the relevant line.

<!-- Note that API documentation changes are now addressed by the
product design team. -->

- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/Committing-Changes.md#changes-files)
for more information.
- [x] Added/updated tests
- [x] If database migrations are included, checked table schema to
confirm autoupdate
- For database migrations:
- [x] Ensured the correct collation is explicitly set for character
columns (`COLLATE utf8mb4_unicode_ci`).
- [x] Manual QA for all new/changed functionality
2024-08-21 08:51:04 -05:00

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- Deleted iOS/iPadOS host will continue to report to Fleet as long as host is in Apple Business Manager (ABM).
- Refetching an offline iOS/iPadOS host will not add new MDM commands to the queue if previous refetch has not completed yet.