internal static int ParseLogEntryPrologue(ReadOnlySpan <byte> input, out long length, out long term, out DateTimeOffset timeStamp, out bool isSnapshot)
{
var reader = new SpanReader <byte>(input);
length = ReadInt64LittleEndian(reader.Read(sizeof(long)));
term = ReadInt64LittleEndian(reader.Read(sizeof(long)));
timeStamp = reader.Read <DateTimeOffset>();
isSnapshot = ValueTypeExtensions.ToBoolean(reader.Read());
return(reader.ConsumedCount);
}
internal static int ParseLogEntryPrologue(ReadOnlySpan <byte> input, out long length, out long term, out DateTimeOffset timeStamp, out bool isSnapshot)
{
length = ReadInt64LittleEndian(input);
input = input.Slice(sizeof(long));
term = ReadInt64LittleEndian(input);
input = input.Slice(sizeof(long));
timeStamp = Span.Read <DateTimeOffset>(ref input);
isSnapshot = ValueTypeExtensions.ToBoolean(input[0]);
return(sizeof(long) + sizeof(long) + Unsafe.SizeOf <DateTimeOffset>() + sizeof(byte));
}
private long term, commitIndex, lastIndex, lastApplied; // volatile
internal NodeState(DirectoryInfo location)
{
mappedFile = MemoryMappedFile.CreateFromFile(Path.Combine(location.FullName, FileName), FileMode.OpenOrCreate, null, Capacity, MemoryMappedFileAccess.ReadWrite);
stateView = mappedFile.CreateViewAccessor();
term = stateView.ReadInt64(TermOffset);
commitIndex = stateView.ReadInt64(CommitIndexOffset);
lastIndex = stateView.ReadInt64(LastIndexOffset);
lastApplied = stateView.ReadInt64(LastAppliedOffset);
var hasLastVote = ValueTypeExtensions.ToBoolean(stateView.ReadByte(LastVotePresenceOffset));
if (hasLastVote)
{
stateView.Read(LastVoteOffset, out ClusterMemberId votedFor);
this.votedFor = votedFor;
}
}
public override ValueTask <bool> ProcessInboundMessageAsync(PacketHeaders headers, ReadOnlyMemory <byte> payload, EndPoint endpoint, CancellationToken token)
{
Debug.Assert(headers.Control == FlowControl.Ack);
TrySetResult(ValueTypeExtensions.ToBoolean(payload.Span[0]));
return(new ValueTask <bool>(false));
}