func (s *FortressSuite) TestWorkersIndependent(c *gc.C) {
fix := newFixture(c)
defer fix.TearDown(c)
// Create a separate worker and associated guard from the same manifold.
worker2, err := fix.manifold.Start(nil)
c.Assert(err, jc.ErrorIsNil)
defer CheckStop(c, worker2)
var guard2 fortress.Guard
err = fix.manifold.Output(worker2, &guard2)
c.Assert(err, jc.ErrorIsNil)
// Unlock the separate worker; check the original worker is unaffected.
err = guard2.Unlock()
c.Assert(err, jc.ErrorIsNil)
AssertLocked(c, fix.Guest(c))
}
// updateCharmDir sets charm directory availability for sharing among
// concurrent workers according to local operation state.
func updateCharmDir(opState operation.State, guard fortress.Guard, abort fortress.Abort) error {
var changing bool
// Determine if the charm content is changing.
if opState.Kind == operation.Install || opState.Kind == operation.Upgrade {
changing = true
} else if opState.Kind == operation.RunHook && opState.Hook != nil && opState.Hook.Kind == hooks.UpgradeCharm {
changing = true
}
available := opState.Started && !opState.Stopped && !changing
logger.Tracef("charmdir: available=%v opState: started=%v stopped=%v changing=%v",
available, opState.Started, opState.Stopped, changing)
if available {
return guard.Unlock()
} else {
return guard.Lockdown(abort)
}
}