/// <inheritdoc />
protected override IEnumerable <MessageRecord> ReadMessagesFromStream(Stream stream,
MessageQuery query)
{
if (compress)
{
stream = new GZipStream(stream, CompressionMode.Decompress, false);
}
var commandSerializer = new MessageBinarySerializer(stream, Serializer);
for (MessageRecord message; (message = commandSerializer.Read()) != null;)
{
if (query.Match(message))
{
yield return(message);
}
}
}
/// <inheritdoc />
public Task AddAsync(MessageRecord messageRecord, CancellationToken cancellationToken)
{
if (disposed)
{
throw new ObjectDisposedException(null);
}
lock (SyncRoot)
{
// We cannot continue zip streams, so we have to create new file
// every time with new stream.
string name = GetAvailableFileNameByDate(currentFileStream, DateTime.Now, compress);
if (currentFileStream == null || System.IO.Path.GetFileName(currentFileStream.Name) != name)
{
Close();
currentFileStream = new FileStream(System.IO.Path.Combine(Path, name), FileMode.Append);
if (compress)
{
currentGZipStream = new GZipStream(currentFileStream, CompressionMode.Compress);
}
currentBinarySerializer = new MessageBinarySerializer(CurrentStream, Serializer);
}
currentBinarySerializer.Write(messageRecord);
}
if (!BufferStream)
{
lock (SyncRoot)
{
currentGZipStream?.Flush();
currentFileStream.Flush();
}
}
return(completedTask);
}
