private async Task DownloadToStreamHelperAsync(IReadBindingHandle binding, GridFSFileInfo <TFileId> fileInfo, Stream destination, GridFSDownloadOptions options, CancellationToken cancellationToken = default(CancellationToken))
{
var checkMD5 = options.CheckMD5 ?? false;
var retryReads = _database.Client.Settings.RetryReads;
using (var source = new GridFSForwardOnlyDownloadStream <TFileId>(this, binding.Fork(), fileInfo, checkMD5)
{
RetryReads = retryReads
})
{
var count = source.Length;
var buffer = new byte[fileInfo.ChunkSizeBytes];
while (count > 0)
{
var partialCount = (int)Math.Min(buffer.Length, count);
await source.ReadBytesAsync(buffer, 0, partialCount, cancellationToken).ConfigureAwait(false);
await destination.WriteAsync(buffer, 0, partialCount, cancellationToken).ConfigureAwait(false);
count -= partialCount;
}
await source.CloseAsync(cancellationToken).ConfigureAwait(false);
}
}
private async Task DownloadToStreamAsyncHelper(IReadBindingHandle binding, GridFSFilesCollectionDocument filesCollectionDocument, Stream destination, GridFSDownloadOptions options = null, CancellationToken cancellationToken = default(CancellationToken))
{
var checkMD5 = options.CheckMD5 ?? false;
using (var source = new GridFSForwardOnlyDownloadStream(this, binding.Fork(), filesCollectionDocument, checkMD5))
{
var count = source.Length;
var buffer = new byte[filesCollectionDocument.ChunkSizeBytes];
while (count > 0)
{
var partialCount = (int)Math.Min(buffer.Length, count);
await source.ReadBytesAsync(buffer, 0, partialCount, cancellationToken).ConfigureAwait(false);
await destination.WriteAsync(buffer, 0, partialCount, cancellationToken).ConfigureAwait(false);
count -= partialCount;
}
await source.CloseAsync(cancellationToken).ConfigureAwait(false);
}
}
private async Task DownloadToStreamHelperAsync(IReadBindingHandle binding, GridFSFileInfo fileInfo, Stream destination, GridFSDownloadOptions options, CancellationToken cancellationToken = default(CancellationToken))
{
var checkMD5 = options.CheckMD5 ?? false;
using (var source = new GridFSForwardOnlyDownloadStream(this, binding.Fork(), fileInfo, checkMD5))
{
var count = source.Length;
var buffer = new byte[fileInfo.ChunkSizeBytes];
while (count > 0)
{
var partialCount = (int)Math.Min(buffer.Length, count);
await source.ReadBytesAsync(buffer, 0, partialCount, cancellationToken).ConfigureAwait(false);
await destination.WriteAsync(buffer, 0, partialCount, cancellationToken).ConfigureAwait(false);
count -= partialCount;
}
await source.CloseAsync(cancellationToken).ConfigureAwait(false);
}
}