func (f *fakeSnappyBackend) ForeignTask(kind string, status state.Status, ss *snapstate.SnapSetup) {
f.ops = append(f.ops, fakeOp{
op: kind + ":" + status.String(),
name: ss.Name(),
revno: ss.Revision(),
})
}
// patch2:
// - migrates SnapSetup.Name to SnapSetup.SideInfo.RealName
// - backfills SnapState.{Sequence,Candidate}.RealName if its missing
func patch2(s *state.State) error {
var stateMap map[string]*OldSnapState
err := s.Get("snaps", &stateMap)
if err == state.ErrNoState {
return nil
}
if err != nil {
return err
}
// migrate SnapSetup in all tasks:
// - the new SnapSetup uses SideInfo, backfil from Candidate
// - also move SnapSetup.{Name,Revision} into SnapSetup.SideInfo.{RealName,Revision}
var oldSS OldSnapSetup
var newSS snapstate.SnapSetup
for _, t := range s.Tasks() {
err := t.Get("snap-setup", &oldSS)
if err == state.ErrNoState {
continue
}
if err != nil && err != state.ErrNoState {
return err
}
// some things stay the same
newSS.Channel = oldSS.Channel
newSS.Flags = oldSS.Flags
newSS.SnapPath = oldSS.SnapPath
newSS.DownloadInfo = oldSS.DownloadInfo
newSS.SideInfo = oldSS.SideInfo
// ... and some change
if newSS.SideInfo == nil {
newSS.SideInfo = &snap.SideInfo{}
if snapst, ok := stateMap[oldSS.Name]; ok && snapst.Candidate != nil {
newSS.SideInfo = snapst.Candidate
}
}
if newSS.SideInfo.RealName == "" {
newSS.SideInfo.RealName = oldSS.Name
}
if newSS.SideInfo.Revision.Unset() {
newSS.SideInfo.Revision = oldSS.Revision
}
t.Set("snap-setup", &newSS)
}
// backfill snapstate.SnapState.{Sequence,Candidate} with RealName
// (if that is missing, was missing for e.g. sideloaded snaps)
for snapName, snapState := range stateMap {
for _, si := range snapState.Sequence {
setRealName(si, snapName)
}
}
s.Set("snaps", stateMap)
return nil
}