// allLocalSnapInfos returns the information about the all current snaps and their SnapStates.
func allLocalSnapInfos(st *state.State) ([]aboutSnap, error) {
st.Lock()
defer st.Unlock()
snapStates, err := snapstate.All(st)
if err != nil {
return nil, err
}
about := make([]aboutSnap, 0, len(snapStates))
var firstErr error
for name, snapState := range snapStates {
info, err := snap.ReadInfo(name, snapState.Current())
if err != nil {
// XXX: aggregate instead?
if firstErr == nil {
firstErr = err
}
continue
}
about = append(about, aboutSnap{info, snapState})
}
return about, firstErr
}
func (s *snapmgrQuerySuite) TestAll(c *C) {
st := s.st
st.Lock()
defer st.Unlock()
snapStates, err := snapstate.All(st)
c.Assert(err, IsNil)
c.Check(snapStates, HasLen, 1)
var snapst *snapstate.SnapState
for name, sst := range snapStates {
c.Assert(name, Equals, "name1")
snapst = sst
}
c.Check(snapst.Active, Equals, true)
c.Check(snapst.Current(), NotNil)
info12, err := snap.ReadInfo("name1", snapst.Current())
c.Assert(err, IsNil)
c.Check(info12.Name(), Equals, "name1")
c.Check(info12.Revision, Equals, 12)
c.Check(info12.Summary(), Equals, "s12")
c.Check(info12.Version, Equals, "1.2")
c.Check(info12.Description(), Equals, "Lots of text")
info11, err := snap.ReadInfo("name1", snapst.Sequence[0])
c.Assert(err, IsNil)
c.Check(info11.Name(), Equals, "name1")
c.Check(info11.Revision, Equals, 11)
c.Check(info11.Version, Equals, "1.1")
}
// localSnapInfo returns the information about the current snap for the given name plus the SnapState with the active flag and other snap revisions.
func localSnapInfo(st *state.State, name string) (info *snap.Info, active bool, err error) {
st.Lock()
defer st.Unlock()
var snapst snapstate.SnapState
err = snapstate.Get(st, name, &snapst)
if err != nil && err != state.ErrNoState {
return nil, false, fmt.Errorf("cannot consult state: %v", err)
}
cur := snapst.Current()
if cur == nil {
return nil, false, nil
}
info, err = snap.ReadInfo(name, cur)
if err != nil {
return nil, false, fmt.Errorf("cannot read snap details: %v", err)
}
return info, snapst.Active, nil
}