public async Task FillPipeAsync(DiscordAttachment attachment, PipeWriter writer)
{
using (var client = HttpClientFactory.Create())
using (var downloadStream = await client.GetStreamAsync(attachment.Url).ConfigureAwait(false))
using (var gzipStream = new GZipStream(downloadStream, CompressionMode.Decompress))
{
try
{
int read;
FlushResult flushed;
do
{
var memory = writer.GetMemory(Config.MinimumBufferSize);
read = await gzipStream.ReadAsync(memory, Config.Cts.Token);
writer.Advance(read);
flushed = await writer.FlushAsync(Config.Cts.Token).ConfigureAwait(false);
} while (read > 0 && !(flushed.IsCompleted || flushed.IsCanceled || Config.Cts.IsCancellationRequested));
}
catch (Exception e)
{
Config.Log.Error(e, "Error filling the log pipe");
writer.Complete(e);
return;
}
}
writer.Complete();
}
// Making this async since regular read/write are tested below
private static async Task DecompressAsync(MemoryStream compareStream, MemoryStream gzStream)
{
var ms = new MemoryStream();
var zip = new GZipStream(gzStream, CompressionMode.Decompress);
var GZipStream = new MemoryStream();
int _bufferSize = 1024;
var bytes = new Byte[_bufferSize];
bool finished = false;
int retCount;
while (!finished)
{
retCount = await zip.ReadAsync(bytes, 0, _bufferSize);
if (retCount != 0)
await GZipStream.WriteAsync(bytes, 0, retCount);
else
finished = true;
}
GZipStream.Position = 0;
compareStream.Position = 0;
byte[] compareArray = compareStream.ToArray();
byte[] writtenArray = GZipStream.ToArray();
Assert.Equal(compareArray.Length, writtenArray.Length);
for (int i = 0; i < compareArray.Length; i++)
{
Assert.Equal(compareArray[i], writtenArray[i]);
}
}
