public Builder With(VersionEdit versionEdit)
{
// TODO Update compaction pointers
// Delete files
foreach (var iter in versionEdit.DeletedFiles)
{
var level = iter.Item1;
var number = iter.Item2;
_levels[level].DeletedFiles.Add(number);
}
// Add new files
foreach (var iter in versionEdit.NewFiles)
{
var level = iter.Item1;
var f = iter.Item2;
_levels[level].AddedFiles.Add(f);
_levels[level].DeletedFiles.Remove(f.Number);
}
return(this);
}
public static VersionEdit DecodeFrom(Stream stream)
{
var pb = new CodedInputStream(stream);
var v = new VersionEdit();
while (pb.Position < stream.Length)
{
var tag = (Tag)pb.ReadInt32();
switch (tag)
{
case Tag.Comparator:
v.Comparator = pb.ReadString();
break;
case Tag.LogNumber:
v.LogNumber = pb.ReadUInt64();
break;
case Tag.NextFileNumber:
v.NextFileNumber = pb.ReadUInt64();
break;
case Tag.LastSequence:
v.LastSequence = pb.ReadUInt64();
// TODO
break;
case Tag.CompactPointer:
v._compactPointers.Add(new Tuple <int, InternalKey>(
ReadLevel(pb), // level
ReadInternalKey(pb) // internal key
));
break;
case Tag.DeletedFile:
v.DeletedFiles.Add(new Tuple <int, ulong>(
ReadLevel(pb), // level
pb.ReadUInt64()) // number
);
break;
case Tag.NewFile:
v._newFiles.Add(new Tuple <int, FileMetaData>(
ReadLevel(pb), // level
new FileMetaData
{
Number = pb.ReadUInt64(),
FileSize = pb.ReadUInt64(),
Smallest = ReadInternalKey(pb),
Largest = ReadInternalKey(pb)
})
);
break;
case Tag.PrevLogNumber:
v.PrevLogNumber = pb.ReadUInt64();
break;
default:
throw new ArgumentOutOfRangeException();
}
}
return(v);
}
