// verifyLocalMember verifies the configured member is in configured
// cluster. If strict is set, it also verifies the configured member
// has the same peer urls as configured advertised peer urls.
func (c *ServerConfig) verifyLocalMember(strict bool) error {
urls := c.InitialPeerURLsMap[c.Name]
// Make sure the cluster at least contains the local server.
if urls == nil {
return fmt.Errorf("couldn't find local name %q in the initial cluster configuration", c.Name)
}
// Advertised peer URLs must match those in the cluster peer list
apurls := c.PeerURLs.StringSlice()
sort.Strings(apurls)
urls.Sort()
if strict {
if !netutil.URLStringsEqual(apurls, urls.StringSlice()) {
umap := map[string]types.URLs{c.Name: c.PeerURLs}
return fmt.Errorf("--initial-cluster must include %s given --initial-advertise-peer-urls=%s", types.URLsMap(umap).String(), strings.Join(apurls, ","))
}
}
return nil
}
// ValidateClusterAndAssignIDs validates the local cluster by matching the PeerURLs
// with the existing cluster. If the validation succeeds, it assigns the IDs
// from the existing cluster to the local cluster.
// If the validation fails, an error will be returned.
func ValidateClusterAndAssignIDs(local *cluster, existing *cluster) error {
ems := existing.Members()
lms := local.Members()
if len(ems) != len(lms) {
return fmt.Errorf("member count is unequal")
}
sort.Sort(MembersByPeerURLs(ems))
sort.Sort(MembersByPeerURLs(lms))
for i := range ems {
if !netutil.URLStringsEqual(ems[i].PeerURLs, lms[i].PeerURLs) {
return fmt.Errorf("unmatched member while checking PeerURLs")
}
lms[i].ID = ems[i].ID
}
local.members = make(map[types.ID]*Member)
for _, m := range lms {
local.members[m.ID] = m
}
return nil
}