func (ls *Stores) updateBootstrapInfo(bi *gossip.BootstrapInfo) error {
if bi.Timestamp.Less(ls.biLatestTS) {
return nil
}
ctx := ls.AnnotateCtx(context.TODO())
// Update the latest timestamp and set cached version.
ls.biLatestTS = bi.Timestamp
ls.latestBI = protoutil.Clone(bi).(*gossip.BootstrapInfo)
// Update all stores.
for _, s := range ls.storeMap {
if err := engine.MVCCPutProto(ctx, s.engine, nil, keys.StoreGossipKey(), hlc.ZeroTimestamp, nil, bi); err != nil {
return err
}
}
return nil
}
// ReadBootstrapInfo implements the gossip.Storage interface. Read
// attempts to read gossip bootstrap info from every known store and
// finds the most recent from all stores to initialize the bootstrap
// info argument. Returns an error on any issues reading data for the
// stores (but excluding the case in which no data has been persisted
// yet).
func (ls *Stores) ReadBootstrapInfo(bi *gossip.BootstrapInfo) error {
ls.mu.RLock()
defer ls.mu.RUnlock()
latestTS := hlc.ZeroTimestamp
ctx := ls.AnnotateCtx(context.TODO())
// Find the most recent bootstrap info.
for _, s := range ls.storeMap {
var storeBI gossip.BootstrapInfo
ok, err := engine.MVCCGetProto(ctx, s.engine, keys.StoreGossipKey(), hlc.ZeroTimestamp, true, nil, &storeBI)
if err != nil {
return err
}
if ok && latestTS.Less(storeBI.Timestamp) {
latestTS = storeBI.Timestamp
*bi = storeBI
}
}
log.Infof(ctx, "read %d node addresses from persistent storage", len(bi.Addresses))
return ls.updateBootstrapInfo(bi)
}