public NatsMemoryOwner(NatsMemoryPool owner, int length)
{
_owner = owner;
_buffer = owner._pool.Rent(length);
Memory = _buffer.AsMemory(0, length <= 0 ? _owner.MaxBufferSize : length);
}
public static INatsServerMessage?ParseMessage(NatsMemoryPool pool, in ReadOnlySpan <byte> line, ref SequenceReader <byte> reader)
public static IMemoryOwner <byte> RentedSerialize(NatsMemoryPool pool, string subscriptionId, int?maxMessages)
{
var hint = _command.Length;
hint += subscriptionId.Length;
if (maxMessages != null)
{
if (maxMessages < 10)
{
hint += 1;
}
else if (maxMessages < 100)
{
hint += 2;
}
else if (maxMessages < 1_000)
{
hint += 3;
}
else if (maxMessages < 10_000)
{
hint += 4;
}
else if (maxMessages < 100_000)
{
hint += 5;
}
else if (maxMessages < 1_000_000)
{
hint += 6;
}
else if (maxMessages < 10_000_000)
{
hint += 7;
}
else
{
throw new ArgumentOutOfRangeException(nameof(maxMessages));
}
hint += _del.Length;
}
hint += _end.Length;
var rented = pool.Rent(hint);
var buffer = rented.Memory;
_command.CopyTo(buffer);
var consumed = _command.Length;
consumed += Encoding.UTF8.GetBytes(subscriptionId, buffer.Slice(consumed).Span);
if (maxMessages != null)
{
_del.CopyTo(buffer.Slice(consumed));
consumed += _del.Length;
Utf8Formatter.TryFormat(maxMessages.Value, buffer.Slice(consumed).Span, out var written);
consumed += written;
}
_end.CopyTo(buffer.Slice(consumed));
return(rented);
}
public static IMemoryOwner <byte> RentedSerialize(NatsMemoryPool pool, string subject, string?replyTo, ReadOnlyMemory <byte> payload)
{
var hint = _command.Length; // PUB
hint += subject.Length + 1; // Subject + space
hint += replyTo?.Length + 1 ?? 0; // ReplyTo
if (payload.Length < 10)
{
hint += 1;
}
else if (payload.Length < 100)
{
hint += 2;
}
else if (payload.Length < 1_000)
{
hint += 3;
}
else if (payload.Length < 10_000)
{
hint += 4;
}
else if (payload.Length < 100_000)
{
hint += 5;
}
else if (payload.Length < 1_000_000)
{
hint += 6;
}
else if (payload.Length < 10_000_000)
{
hint += 7;
}
else
{
throw new ArgumentOutOfRangeException(nameof(payload));
}
hint += _end.Length; // Ending
hint += payload.Length;
hint += _end.Length; // Ending Payload
var rented = pool.Rent(hint);
var buffer = rented.Memory;
_command.CopyTo(buffer);
var consumed = _command.Length;
consumed += Encoding.ASCII.GetBytes(subject, buffer.Slice(consumed).Span);
_del.CopyTo(buffer.Slice(consumed));
consumed++;
if (!string.IsNullOrEmpty(replyTo))
{
consumed += Encoding.UTF8.GetBytes(replyTo, buffer.Slice(consumed).Span);
_del.CopyTo(buffer.Slice(consumed));
consumed++;
}
Utf8Formatter.TryFormat(payload.Length, buffer.Slice(consumed).Span, out var written);
consumed += written;
_end.CopyTo(buffer.Slice(consumed));
consumed += _end.Length;
if (!payload.IsEmpty)
{
payload.CopyTo(buffer.Slice(consumed));
consumed += payload.Length;
}
_end.CopyTo(buffer.Slice(consumed));
return(rented);
}
public NatsMessageParser(NatsMemoryPool memoryPool)
{
_memoryPool = memoryPool;
}