private async Task <OpenStreamResult> GetFileStreamAsync(Context context, ContentHash hash)
{
Debug.Assert(_contentStoreByCacheName != null);
// Iterate through all known stores, looking for content in each.
// In most of our configurations there is just one store anyway,
// and doing this means both we can callers don't have
// to deal with cache roots and drive letters.
foreach (KeyValuePair <string, IContentStore> entry in _contentStoreByCacheName)
{
IStreamStore store = entry.Value as IStreamStore;
if (store != null)
{
OpenStreamResult result = await store.StreamContentAsync(context, hash);
if (result.Code != OpenStreamResult.ResultCode.ContentNotFound)
{
return(result);
}
}
}
return(new OpenStreamResult(OpenStreamResult.ResultCode.ContentNotFound, $"{hash} to found"));
}