public static async Task <Stream> TryBindStreamAsync(BlobBaseClient blob, CancellationToken cancellationToken, string eTag = null)
{
Stream rawStream;
try
{
if (eTag != null)
{
BlobOpenReadOptions readOptions = new BlobOpenReadOptions(allowModifications: false)
{
Conditions = new BlobRequestConditions()
{
IfMatch = new ETag(eTag),
},
};
rawStream = await blob.OpenReadAsync(readOptions, cancellationToken : cancellationToken).ConfigureAwait(false);
}
else
{
rawStream = await blob.OpenReadAsync(cancellationToken : cancellationToken).ConfigureAwait(false);
}
}
catch (RequestFailedException exception)
{
// Testing generic error case since specific error codes are not available for FetchAttributes
// (HEAD request), including OpenRead.
if (!exception.IsNotFound())
{
throw;
}
return(null);
}
return(rawStream);
}
public static async Task <Stream> TryBindStreamAsync(BlobBaseClient blob, CancellationToken cancellationToken)
{
Stream rawStream;
try
{
rawStream = await blob.OpenReadAsync(cancellationToken : cancellationToken).ConfigureAwait(false);
}
catch (RequestFailedException exception)
{
// Testing generic error case since specific error codes are not available for FetchAttributes
// (HEAD request), including OpenRead.
if (!exception.IsNotFound())
{
throw;
}
return(null);
}
return(rawStream);
}