Clear failed policy statuses for a VPP-automated policy when we detect the automated app goes from zero available licenses to more than zero

[iansltx]

Problem

Policy-automated VPP app installs fail if the automated app has no available licenses, and fixing that issue on won't result in the app being installed (split from #25514).

What have you tried?

The workaround for this is to either manually install the app on the affected host after obtaining more licenses (in which case you'll get an error if licenses are still unavailable) or, for a larger number of affected hosts, remove and then re-add the policy automation.

Potential solutions

Periodically check available license counts for VPP apps, and when a VPP app goes from zero available licenses to more than zero, clear policy failures for automations pointing to that app so the next host sync can successfully install the app.

As part of this, we should display available license counts in the UI, including freshness indicators, and update the count on a per-app basis if we find out during an install attempt that licenses are not available.

What is the expected workflow as a result of your proposal?

If a VPP app fails to install due to VPP license exhaustion being turned off for a host, adding more licenses for that app is sufficient for policy based VPP installs to be re-queued for that policy, with no further manual intervention.

[noahtalerman]

FYI @iansltx closed this request because I grouped it into the following request:

• Re-trigger App Store (VPP) app installs that failed #25623

[fleet-release]

Licenses once empty,
Now replenished, flow freely.
Policies breathe easy.