Esempio n. 1
0
func doRange(kv dstorage.KV, r *pb.RangeRequest) *pb.RangeResponse {
	resp := &pb.RangeResponse{}
	resp.Header = &pb.ResponseHeader{}
	kvs, rev, err := kv.Range(r.Key, r.RangeEnd, r.Limit, 0)
	if err != nil {
		panic("not handled error")
	}

	resp.Header.Revision = rev
	for i := range kvs {
		resp.Kvs = append(resp.Kvs, &kvs[i])
	}
	return resp
}
Esempio n. 2
0
func doCompare(kv dstorage.KV, c *pb.Compare) (int64, bool) {
	ckvs, rev, err := kv.Range(c.Key, nil, 1, 0)
	if err != nil {
		return rev, false
	}

	ckv := ckvs[0]

	// -1 is less, 0 is equal, 1 is greater
	var result int
	switch c.Target {
	case pb.Compare_VALUE:
		result = bytes.Compare(ckv.Value, c.Value)
	case pb.Compare_CREATE:
		result = compareInt64(ckv.CreateRevision, c.CreateRevision)
	case pb.Compare_MOD:
		result = compareInt64(ckv.ModRevision, c.ModRevision)
	case pb.Compare_VERSION:
		result = compareInt64(ckv.Version, c.Version)
	}

	switch c.Result {
	case pb.Compare_EQUAL:
		if result != 0 {
			return rev, false
		}
	case pb.Compare_GREATER:
		if result != 1 {
			return rev, false
		}
	case pb.Compare_LESS:
		if result != -1 {
			return rev, false
		}
	}
	return rev, true
}