示例#1
0
func putRoutingProviders(ds datastore.Datastore, k key.Key, newRecords []*dhtpb.Message_Peer) error {
	log.Event(context.Background(), "putRoutingProviders", &k)
	oldRecords, err := getRoutingProviders(ds, k)
	if err != nil {
		return err
	}
	mergedRecords := make(map[string]*dhtpb.Message_Peer)
	for _, provider := range oldRecords {
		mergedRecords[provider.GetId()] = provider // add original records
	}
	for _, provider := range newRecords {
		mergedRecords[provider.GetId()] = provider // overwrite old record if new exists
	}
	var protomsg dhtpb.Message
	protomsg.ProviderPeers = make([]*dhtpb.Message_Peer, 0, len(mergedRecords))
	for _, provider := range mergedRecords {
		protomsg.ProviderPeers = append(protomsg.ProviderPeers, provider)
	}
	data, err := proto.Marshal(&protomsg)
	if err != nil {
		return err
	}
	return ds.Put(providerKey(k), data)
}