feat(operator): Add SignalWatcher #1147
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Techassi
moved this from Development: In Progress
to Development: Waiting for Review
in Stackable Engineering
Techassi
moved this from Development: Waiting for Review
to Development: In Progress
in Stackable Engineering
Techassi
moved this from Development: In Progress
to Development: Waiting for Review
in Stackable Engineering
maltesander
moved this from Development: Waiting for Review
to Development: In Review
in Stackable Engineering
maltesander
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Feb 3, 2026
Co-authored-by: Malte Sander <malte.sander.it@gmail.com>
Techassi
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Part of stackabletech/issues#803.
Note
Internally, we could use an CancellationToken instead of a watch channel, but this would require us to add
tokio_utilsas a dependency.CancellationTokenon it's own is also not sufficient, as the cancellation needs to be triggered by a signal (like SIGTERM). TheSignalWatcherabstracts waiting for the signal and notifying downstream tasks all in one place.This PR adds a new
SignalWatcherwhich can be used to watch signals and multiply them to gracefully shutdown multiple concurrent tasks/futures.