// Scan scans the key range specified by start key through end key up
// to some maximum number of results. The last key of the iteration is
// returned with the reply.
func (r *Range) Scan(args *proto.ScanRequest, reply *proto.ScanResponse) {
kvs, err := r.engine.Scan(args.Key, args.EndKey, args.MaxResults)
if err != nil {
reply.SetGoError(err)
return
}
reply.Rows = make([]proto.KeyValue, len(kvs))
for idx, kv := range kvs {
// TODO(Jiang-Ming): provide the correct timestamp and checksum once switch to mvcc
reply.Rows[idx] = proto.KeyValue{Key: kv.Key, Value: proto.Value{Bytes: kv.Value}}
}
}
// Scan scans the key range specified by start key through end key up
// to some maximum number of results. The last key of the iteration is
// returned with the reply.
func (r *Range) Scan(batch engine.Engine, args *proto.ScanRequest, reply *proto.ScanResponse) []proto.Intent {
kvs, intents, err := engine.MVCCScan(batch, args.Key, args.EndKey, args.MaxResults, args.Timestamp, args.ReadConsistency == proto.CONSISTENT, args.Txn)
reply.Rows = kvs
reply.SetGoError(err)
return intents
}
// Scan scans the key range specified by start key through end key up
// to some maximum number of results. The last key of the iteration is
// returned with the reply.
func (r *Range) Scan(args *proto.ScanRequest, reply *proto.ScanResponse) {
kvs, err := r.mvcc.Scan(args.Key, args.EndKey, args.MaxResults, args.Timestamp, args.Txn)
reply.Rows = kvs
reply.SetGoError(err)
}