// remove will remove the supplied unit from state. It will panic if it
// observes inconsistent internal state.
func (d *Deployer) remove(unit *apideployer.Unit) error {
unitName := unit.Name()
if d.deployed.Contains(unitName) {
panic("must not remove a deployed unit")
} else if unit.Life() == params.Alive {
panic("must not remove an Alive unit")
}
logger.Infof("removing unit %q", unitName)
return unit.Remove()
}
