public async Task WriteToAsync(Stream @out)
{
TarStreamBuilder tarStreamBuilder = new TarStreamBuilder();
DockerLoadManifestEntryTemplate manifestTemplate = new DockerLoadManifestEntryTemplate();
// Adds all the layers to the tarball and manifest.
foreach (ILayer layer in image.GetLayers())
{
string layerName = layer.GetBlobDescriptor().GetDigest().GetHash() + LAYER_FILE_EXTENSION;
tarStreamBuilder.AddBlobEntry(
layer.GetBlob(), layer.GetBlobDescriptor().GetSize(), layerName);
manifestTemplate.AddLayerFile(layerName);
}
// Adds the container configuration to the tarball.
ContainerConfigurationTemplate containerConfiguration =
new ImageToJsonTranslator(image).GetContainerConfiguration();
tarStreamBuilder.AddByteEntry(
JsonTemplateMapper.ToByteArray(containerConfiguration),
CONTAINER_CONFIGURATION_JSON_FILE_NAME);
// Adds the manifest to tarball.
manifestTemplate.SetRepoTags(imageReference.ToStringWithTag());
tarStreamBuilder.AddByteEntry(
JsonTemplateMapper.ToByteArray(new List <DockerLoadManifestEntryTemplate> {
manifestTemplate
}),
MANIFEST_JSON_FILE_NAME);
await tarStreamBuilder.WriteAsTarArchiveToAsync(@out).ConfigureAwait(false);
}
/**
* Gets the directory corresponding to the given image reference.
*
* @param imageReference the image reference
* @return a path in the form of {@code
* (fib-cache)/images/registry[!port]/repository!(tag|digest-type!digest)}
*/
public SystemPath GetImageDirectory(IImageReference imageReference)
{
imageReference = imageReference ?? throw new ArgumentNullException(nameof(imageReference));
// Replace ':' and '@' with '!' to avoid directory-naming restrictions
string replacedReference = imageReference.ToStringWithTag().Replace(':', '!').Replace('@', '!');
// Split image reference on '/' to build directory structure
IEnumerable <string> directories = Splitter.On('/').Split(replacedReference);
SystemPath destination = GetImagesDirectory();
foreach (string dir in directories)
{
destination = destination.Resolve(dir);
}
return(destination);
}