func membersFromStore(st store.Store) (map[types.ID]*Member, map[types.ID]bool) {
members := make(map[types.ID]*Member)
removed := make(map[types.ID]bool)
e, err := st.Get(storeMembersPrefix, true, true)
if err != nil {
if isKeyNotFound(err) {
return members, removed
}
plog.Panicf("get storeMembers should never fail: %v", err)
}
for _, n := range e.Node.Nodes {
m, err := nodeToMember(n)
if err != nil {
plog.Panicf("nodeToMember should never fail: %v", err)
}
members[m.ID] = m
}
e, err = st.Get(storeRemovedMembersPrefix, true, true)
if err != nil {
if isKeyNotFound(err) {
return members, removed
}
plog.Panicf("get storeRemovedMembers should never fail: %v", err)
}
for _, n := range e.Node.Nodes {
removed[mustParseMemberIDFromKey(n.Key)] = true
}
return members, removed
}
func clusterVersionFromStore(st store.Store) *semver.Version {
e, err := st.Get(path.Join(StoreClusterPrefix, "version"), false, false)
if err != nil {
if isKeyNotFound(err) {
return nil
}
plog.Panicf("unexpected error (%v) when getting cluster version from store", err)
}
return semver.Must(semver.NewVersion(*e.Node.Value))
}