private async Task <bool> TryStreamCachedAllFilesZip(
Release release,
Stream outputStream,
CancellationToken?cancellationToken = null)
{
var path = release.AllFilesZipPath();
var allFilesZip = await _blobStorageService.FindBlob(PublicReleaseFiles, path);
// Ideally, we would have some way to do this caching via annotations,
// but this a chunk of work to get working properly as piping
// the cached file to target stream isn't super trivial.
// For now, we'll just do this manually as it's way easier.
if (allFilesZip?.Updated is not null &&
allFilesZip.Updated.Value.AddSeconds(AllFilesZipTtl) >= DateTime.UtcNow)
{
await _blobStorageService.DownloadToStream(
containerName : PublicReleaseFiles,
path : path,
stream : outputStream,
cancellationToken : cancellationToken
);
await outputStream.DisposeAsync();
return(true);
}
return(false);
}
private async Task ZipAllFilesToStream(
Release release,
Stream outputStream,
CancellationToken?cancellationToken = null)
{
var releaseFiles = (await QueryReleaseFiles(release.Id).ToListAsync())
.OrderBy(rf => rf.File.ZipFileEntryName())
.ToList();
var path = Path.GetTempPath() + release.AllFilesZipFileName();
var fileStream = File.Open(path, FileMode.OpenOrCreate, FileAccess.ReadWrite);
await using var multiWriteStream = new MultiWriteStream(outputStream, fileStream);
await DoZipFilesToStream(releaseFiles, release, multiWriteStream, cancellationToken);
await multiWriteStream.FlushAsync();
// Now cache the All files zip into blob storage
// so that we can quickly fetch it again.
fileStream.Position = 0;
await _blobStorageService.UploadStream(
containerName : PublicReleaseFiles,
path : release.AllFilesZipPath(),
stream : fileStream,
contentType : MediaTypeNames.Application.Zip
);
await fileStream.DisposeAsync();
File.Delete(path);
}
public void AllFilesZipPath()
{
const string releaseSlug = "release-slug";
const string publicationSlug = "publication-slug";
var release = new Release
{
Id = Guid.NewGuid(),
Slug = releaseSlug,
Publication = new Publication
{
Slug = publicationSlug
}
};
Assert.Equal($"{release.Id}/zip/{publicationSlug}_{releaseSlug}.zip", release.AllFilesZipPath());
}