Ejemplo n.º 1
0
func (zkts *Server) GetSrvShard(cell, keyspace, shard string) (*topo.SrvShard, error) {
	path := zkPathForVtShard(cell, keyspace, shard)
	data, stat, err := zkts.zconn.Get(path)
	if err != nil {
		if zookeeper.IsError(err, zookeeper.ZNONODE) {
			err = topo.ErrNoNode
		}
		return nil, err
	}
	return topo.NewSrvShard(data, stat.Version())
}
Ejemplo n.º 2
0
func (tr *TopoReader) GetEndPoints(req topo.GetEndPointsArgs, reply *topo.VtnsAddrs) (err error) {
	shardPath := zkPathForVtShard(req.Cell, req.Keyspace, req.Shard)
	zkrReply := &zk.ZkNode{}
	if err := tr.zkr.Get(&zk.ZkPath{Path: shardPath}, zkrReply); err != nil {
		return err
	}
	shard, err := topo.NewSrvShard(zkrReply.Data, zkrReply.Stat.Version())
	if err != nil {
		return err
	}
	*reply = shard.AddrsByType[req.TabletType]
	return nil
}
Ejemplo n.º 3
0
func (zkts *Server) GetSrvShard(cell, keyspace, shard string) (*topo.SrvShard, error) {
	path := zkPathForVtShard(cell, keyspace, shard)
	data, stat, err := zkts.zconn.Get(path)
	if err != nil {
		if zookeeper.IsError(err, zookeeper.ZNONODE) {
			err = topo.ErrNoNode
		}
		return nil, err
	}
	srvShard := topo.NewSrvShard(int64(stat.Version()))
	if len(data) > 0 {
		if err := json.Unmarshal([]byte(data), srvShard); err != nil {
			return nil, fmt.Errorf("SrvShard unmarshal failed: %v %v", data, err)
		}
	}
	return srvShard, nil
}
Ejemplo n.º 4
0
// GetSrvShard implements topo.Server.
func (s *Server) GetSrvShard(ctx context.Context, cellName, keyspace, shard string) (*topo.SrvShard, error) {
	cell, err := s.getCell(cellName)
	if err != nil {
		return nil, err
	}

	resp, err := cell.Get(srvShardFilePath(keyspace, shard), false /* sort */, false /* recursive */)
	if err != nil {
		return nil, convertError(err)
	}
	if resp.Node == nil {
		return nil, ErrBadResponse
	}

	value := topo.NewSrvShard(int64(resp.Node.ModifiedIndex))
	if err := json.Unmarshal([]byte(resp.Node.Value), value); err != nil {
		return nil, fmt.Errorf("bad serving shard data (%v): %q", err, resp.Node.Value)
	}
	return value, nil
}