/// <summary>
/// Extracts raw file indexes from each layer in an image, working from the top down.
/// </summary>
/// <param name="image"></param>
/// <param name="maxDepth">Maximum layers down to search. If 0, searches all layers</param>
/// <returns></returns>
async IAsyncEnumerable <LayerIndex> GetRawIndexesAsync(string repository, Image image, int maxDepth = 0)
{
var layers = image.Layers.Reverse();
var depth = 1;
foreach (var layer in layers)
{
List <string> files;
using (var layerStream = await RecurseClient.GetLayerArchiveAsync(repository, layer.Digest))
{
try
{
files = extractor.ExtractFiles(layerStream).ToList();
}
catch (SharpZipBaseException ex)
{
logger.LogError(ex, "Encountered corrupt layer archive, halting index.");
yield break;
}
}
yield return(new LayerIndex
{
Depth = depth++,
Digest = layer.Digest,
Files = files
});
if (maxDepth > 0 && depth > maxDepth)
{
break;
}
}
}
private async Task <ImageSet> ParseV2ThinManifest(string repository, string digest, string manifest)
{
var thinManifest = JsonConvert.DeserializeObject <ManifestV2>(manifest);
var config = await RecurseClient.GetImageConfigAsync(repository, thinManifest.Config.Digest);
if (config == null)
{
throw new NotFoundException("The requested manifest does not exist in the registry.");
}
var image = new Image
{
History = config.History.Select(h => Model.History.From(h)),
Layers = thinManifest.Layers.Select(l => l.ToLayer()),
Digest = digest,
Platform = new Platform
{
Architecture = config.Architecture,
OS = config.OS,
OSVerion = config.OSVersion
}
};
return(new ImageSet
{
Date = image.History.Max(h => h.Created),
Images = new[] { image },
Platforms = new[] { image.Platform },
SetDigest = image.Digest
});
}
private async Task <ImageSet> ParseV2FatManifest(string repository, string digest, string manifest)
{
var images = new List <Image>();
var fatManifest = JsonConvert.DeserializeObject <FatManifest>(manifest);
foreach (var subManifest in fatManifest.Manifests)
{
images.Add((await RecurseClient.GetImageSetAsync(repository, subManifest.Digest)).Images.First());
}
return(new ImageSet
{
Date = images.SelectMany(i => i.History.Select(h => h.Created)).Max(),
Images = images,
Platforms = images.Select(i => i.Platform),
SetDigest = digest,
});
}
