Show service online status

[Arnei]

Requires opencast/opencast#6632 to function.

Fixes #1166.

Adds a column to the services table that displays the online status of a service using traffic lights, much like the respective column in the servers table.
This change should make it easier to reason about why certain jobs may not able to be dispatched.

Notably, an offline service does not necessarily mean that there is an error or even a problem. Therefore this patch does not add a notification about services being offline.

How to test this

• Have an Opencast 17 or newer with Add isOnline to admin ui service endpoint opencast#6632 installed. Ideally have a distributed setup as well (no AllInOne).
• Force services to be offline or in maintenance somehow. The latter can be achieved through the servers page in the ui.

[github-actions]

Use docker or podman to test this pull request locally.

Run test server using develop.opencast.org as backend:

podman run --rm -it -p 127.0.0.1:3000:3000 ghcr.io/opencast/opencast-admin-interface:pr-1178

Specify a different backend like stable.opencast.org:

podman run --rm -it -p 127.0.0.1:3000:3000 -e PROXY_TARGET=https://stable.opencast.org ghcr.io/opencast/opencast-admin-interface:pr-1178

It may take a few seconds for the interface to spin up.
It will then be available at http://127.0.0.1:3000.
For more options you can pass on to the proxy, take a look at the README.md.

[github-actions]

This pull request is deployed at test.admin-interface.opencast.org/1178/2025-04-08_10-15-59/ .
It might take a few minutes for it to become available.

[gregorydlogan]

For easier testing, even on an all in one set heartbeat.interval=0 in org.opencastproject.serviceregistry.impl.ServiceRegistryJpaImpl.cfg, then use update oc_host_registration set online=0; and/or update oc_host_registration set maintenance=1; to make hosts be offline and/or in maintenance.

This is really nitpicky, but should we center the traffic light? I feel like it looks odd being that far over, even though everything else is left adjusted.

As is		Centered

[Arnei]

This is really nitpicky, but should we center the traffic light? I feel like it looks odd being that far over, even though everything else is left adjusted.

I'm slightly in favor of keeping it left, just because that keeps it the same as the other columns and does not make it look so lost in case the column is wider than min-width. But I also do not care all that much.

[wsmirnow]

Works for me

[gregorydlogan]

Fine by me