public DownloadDataAccess(string toolCachePath, string userAgent)
{
youTubeDLResolver = new ToolResolver(
cacheDirectory: Path.Join(toolCachePath, "youtube-dl"),
fileName: "youtube-dl.exe",
DownloadResolvers.GitHubReleaseAsset(
owner: "ytdl-org",
repo: "youtube-dl",
assetName: "youtube-dl.exe",
userAgent));
ffmpegResolver = new ToolResolver(
cacheDirectory: Path.Join(toolCachePath, "ffmpeg"),
fileName: "ffmpeg.exe",
getLatestDownloadAsync: async cancellationToken =>
{
using var client = OwnershipTracker.Create(
new HttpClient(new HttpClientHandler { AutomaticDecompression = DecompressionMethods.All }));
var version = await client.OwnedInstance.GetStringAsync("https://www.gyan.dev/ffmpeg/builds/release-version", cancellationToken).ConfigureAwait(false);
return(new AvailableToolDownload(
version,
client.ReleaseOwnership(),
downloadUrl: "https://www.gyan.dev/ffmpeg/builds/ffmpeg-release-essentials.zip",
StreamTransforms.UnzipSingleFile($"ffmpeg-{version}-essentials_build/bin/ffmpeg.exe")));
});
}
public LeaseSource(string version, RefCountedFileLock fileLock)
{
using var lease = OwnershipTracker.Create(fileLock.Lease());
Version = version;
FileLock = fileLock;
Lease = lease.ReleaseOwnership();
}
public static Func <CancellationToken, Task <AvailableToolDownload> > GitHubReleaseAsset(
string owner,
string repo,
string assetName,
string userAgent,
Func <string, Func <Stream, Stream>?>?getStreamTransformForVersion = null)
{
if (string.IsNullOrWhiteSpace(owner))
{
throw new ArgumentException("Owner must be specified.", nameof(owner));
}
if (string.IsNullOrWhiteSpace(repo))
{
throw new ArgumentException("Repository must be specified.", nameof(repo));
}
if (string.IsNullOrWhiteSpace(assetName))
{
throw new ArgumentException("Asset name must be specified.", nameof(assetName));
}
if (string.IsNullOrWhiteSpace(userAgent))
{
throw new ArgumentException("User agent must be specified.", nameof(userAgent));
}
return(async cancellationToken =>
{
using var client = OwnershipTracker.Create(
new HttpClient(new HttpClientHandler { AutomaticDecompression = DecompressionMethods.All })
{
BaseAddress = new Uri("https://api.github.com"),
DefaultRequestHeaders = { { "User-Agent", userAgent } }
});
var(version, downloadUrl) = await GetLatestGitHubReleaseAssetAsync(client.OwnedInstance, owner, repo, assetName, cancellationToken);
if (downloadUrl is null)
{
throw new NotImplementedException($"Unable to find {assetName} in latest GitHub release.");
}
var streamTransform = getStreamTransformForVersion?.Invoke(version);
return new AvailableToolDownload(version, client.ReleaseOwnership(), downloadUrl, streamTransform);
});
}