public SnStream(BlobStorageContext context, byte[] rawData = null)
{
Context = context;
_underlyingStream = rawData != null
? new RepositoryStream(context.FileId, context.Length, rawData)
: context.Provider.GetStreamForRead(context);
}
private static async Task CopyFromStreamByChunksAsync(BlobStorageContext context, Stream input)
{
// This method should be used only when the client has a stream and
// the target will be a regular SQL varbinary column, because we do
// not have a special write stream for that case. In every other case
// the blobprovider API should be used that exposes a writable stream.
var buffer = new byte[BlobStorage.BinaryChunkSize];
int read;
long offset = 0;
while ((read = await input.ReadAsync(buffer, 0, buffer.Length)) > 0)
{
await context.Provider.WriteAsync(context, offset, GetLocalBufferAfterRead(read, buffer));
offset += read;
}
}
private static void UpdateContextProperties(BlobStorageContext context, int versionId, int propertyTypeId, long fullSize)
{
context.Length = fullSize;
context.VersionId = versionId;
context.PropertyTypeId = propertyTypeId;
}
private SnStream(BlobStorageContext context, Stream underlyingStream)
{
Context = context;
_underlyingStream = underlyingStream;
}
