Koji-containerbuilds need a way to know the build is being cancelled to stop the Openshift task. Current API doesn't allow that - there is no way for a plugin (or any other system) that the build has been cancelled.
I suggest to add a new callback - cancel - for this action
cancel
A hub plugin could trigger on postTaskStateChange and take action if such a task is canceled. I don't see where we need a new callback for this.
@mikem changed the status to Invalid
Invalid
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/179
Please continue any further discussion there.