private static async Task <Stream> ProcessManifest(BicepRegistryBlobClient client, OciManifest manifest)
{
ProcessConfig(manifest.Config);
if (manifest.Layers.Length != 1)
{
throw new InvalidModuleException("Expected a single layer in the OCI artifact.");
}
var layer = manifest.Layers.Single();
return(await ProcessLayer(client, layer));
}
private static async Task <Stream> ProcessLayer(BicepRegistryBlobClient client, OciDescriptor layer)
{
if (!string.Equals(layer.MediaType, BicepMediaTypes.BicepModuleLayerV1Json, MediaTypeComparison))
{
throw new InvalidModuleException($"Did not expect layer media type \"{layer.MediaType}\".");
}
Response <DownloadBlobResult> blobResult;
try
{
blobResult = await client.DownloadBlobAsync(layer.Digest);
}
catch (RequestFailedException exception) when(exception.Status == 404)
{
throw new InvalidModuleException($"Module manifest refers to a non-existent blob with digest \"{layer.Digest}\".", exception);
}
ValidateBlobResponse(blobResult, layer);
return(blobResult.Value.Content);
}
private static async Task <(OciManifest, Stream, string)> DownloadManifestAsync(OciArtifactModuleReference moduleReference, BicepRegistryBlobClient client)
{
Response <DownloadManifestResult> manifestResponse;
try
{
manifestResponse = await client.DownloadManifestAsync(moduleReference.Tag, new DownloadManifestOptions(ContentType.ApplicationVndOciImageManifestV1Json));
}
catch (RequestFailedException exception) when(exception.Status == 404)
{
// manifest does not exist
throw new OciModuleRegistryException("The module does not exist in the registry.", exception);
}
ValidateManifestResponse(manifestResponse);
// the SDK doesn't expose all the manifest properties we need
// so we need to deserialize the manifest ourselves to get everything
var stream = manifestResponse.Value.Content;
stream.Position = 0;
var deserialized = DeserializeManifest(stream);
stream.Position = 0;
return(deserialized, stream, manifestResponse.Value.Digest);
}
