Keep jenkins slave offline when user logs into Windows

Question

Is there any way to configure Jenkins to mark Windows slave offline when a user starts using slave?

EDIT: By starts using I mean user logs on.

Answer 1

Since a Jenkins slave can be registered as a Windows service, one way would be to ensure that there is no currently logged on user.

One could conceive a Windows tasks, running regularely, which would check if a user is logged on, and:

• if there is one, would stop the service.
• if not, (re)start the same Jenkins slave agent windows service.

For checking who is logged on, see "From WindowsService how can I find currently logged in user from C#?" for one way.