// mvccEncodeKey makes a timestamped key which is the concatenation of
// the given key and the corresponding timestamp. The key is expected
// to have been encoded using EncodeBinary.
func mvccEncodeKey(key Key, timestamp proto.Timestamp) Key {
if timestamp.WallTime < 0 || timestamp.Logical < 0 {
panic(fmt.Sprintf("negative values disallowed in timestamps: %+v", timestamp))
}
k := append([]byte{}, key...)
k = encoding.EncodeUint64Decreasing(k, uint64(timestamp.WallTime))
k = encoding.EncodeUint32Decreasing(k, uint32(timestamp.Logical))
return k
}
// mvccEncodeKey makes a timestamped key which is the concatenation of
// the given key and the corresponding timestamp. The key is expected
// to have been encoded using EncodeBinary.
func mvccEncodeKey(key Key, timestamp proto.Timestamp) Key {
if timestamp.WallTime < 0 || timestamp.Logical < 0 {
// TODO(Spencer): Reevaluate this panic vs. returning an error, see
// https://github.com/cockroachdb/cockroach/pull/50/files#diff-6d2dccecc0623fb6dd5456ae18bbf19eR611
panic(fmt.Sprintf("negative values disallowed in timestamps: %+v", timestamp))
}
k := append([]byte{}, key...)
k = encoding.EncodeUint64Decreasing(k, uint64(timestamp.WallTime))
k = encoding.EncodeUint32Decreasing(k, uint32(timestamp.Logical))
return k
}
// RaftLogKey returns a system-local key for a Raft log entry.
func RaftLogKey(raftID int64, logIndex uint64) proto.Key {
// The log is stored "backwards" so we can easily find the highest index stored.
return MakeRangeIDKey(raftID, KeyLocalRaftLogSuffix, encoding.EncodeUint64Decreasing(nil, logIndex))
}