func (s *interfaceManagerSuite) manager(c *C) *ifacestate.InterfaceManager {
if s.privateMgr == nil {
mgr, err := ifacestate.Manager(s.state, s.extraIfaces)
c.Assert(err, IsNil)
s.privateMgr = mgr
}
return s.privateMgr
}
// New creates a new Overlord with all its state managers.
func New() (*Overlord, error) {
o := &Overlord{
loopTomb: new(tomb.Tomb),
}
backend := &overlordStateBackend{
path: dirs.SnapStateFile,
ensureBefore: o.ensureBefore,
}
s, err := loadState(backend)
if err != nil {
return nil, err
}
o.stateEng = NewStateEngine(s)
snapMgr, err := snapstate.Manager(s)
if err != nil {
return nil, err
}
o.snapMgr = snapMgr
o.stateEng.AddManager(o.snapMgr)
assertMgr, err := assertstate.Manager(s)
if err != nil {
return nil, err
}
o.assertMgr = assertMgr
o.stateEng.AddManager(o.assertMgr)
ifaceMgr, err := ifacestate.Manager(s, nil)
if err != nil {
return nil, err
}
o.ifaceMgr = ifaceMgr
o.stateEng.AddManager(o.ifaceMgr)
return o, nil
}