/// <summary>
/// This will download the dedup into stdin stream while extracting the TAR simulataneously (piped). This is done by
/// starting the download through a Task and starting the TAR/7z process which is reading from STDIN.
/// </summary>
/// <remarks>
/// Windows will use 7z to extract the TAR file (only if 7z is installed on the machine and is part of PATH variables).
/// Non-Windows machines will extract TAR file using the 'tar' command'.
/// </remarks>
public static Task DownloadAndExtractTarAsync(
AgentTaskPluginExecutionContext context,
Manifest manifest,
DedupManifestArtifactClient dedupManifestClient,
string tarWorkingDirectory,
CancellationToken cancellationToken)
{
ValidateTarManifest(manifest);
DedupIdentifier dedupId = DedupIdentifier.Create(manifest.Items.Single(i => i.Path.EndsWith(archive, StringComparison.OrdinalIgnoreCase)).Blob.Id);
// We now can simply specify the working directory as the tarball will contain paths relative to it
ProcessStartInfo processStartInfo = GetExtractStartProcessInfo(context, tarWorkingDirectory);
if (!Directory.Exists(tarWorkingDirectory))
{
Directory.CreateDirectory(tarWorkingDirectory);
}
Func <Process, CancellationToken, Task> downloadTaskFunc =
(process, ct) =>
Task.Run(async() =>
{
try
{
await dedupManifestClient.DownloadToStreamAsync(dedupId, process.StandardInput.BaseStream, proxyUri: null, cancellationToken: ct);
process.StandardInput.BaseStream.Close();
}
catch (Exception e)
{
try
{
process.Kill();
}
catch { }
ExceptionDispatchInfo.Capture(e).Throw();
}
});
return(RunProcessAsync(
context,
processStartInfo,
downloadTaskFunc,
() => { },
cancellationToken));
}
/// <summary>
/// This will download the dedup into stdin stream while extracting the TAR simulataneously (piped). This is done by
/// starting the download through a Task and starting the TAR/7z process which is reading from STDIN.
/// </summary>
/// <remarks>
/// Windows will use 7z to extract the TAR file (only if 7z is installed on the machine and is part of PATH variables).
/// Non-Windows machines will extract TAR file using the 'tar' command'.
/// </remarks>
public static Task DownloadAndExtractTarAsync(
AgentTaskPluginExecutionContext context,
Manifest manifest,
DedupManifestArtifactClient dedupManifestClient,
string targetDirectory,
CancellationToken cancellationToken)
{
ValidateTarManifest(manifest);
Directory.CreateDirectory(targetDirectory);
DedupIdentifier dedupId = DedupIdentifier.Create(manifest.Items.Single(i => i.Path == $"/{archiveFileName}").Blob.Id);
bool does7zExists = isWindows ? CheckIf7ZExists() : false;
string processFileName = (does7zExists) ? "7z" : "tar";
string processArguments = (does7zExists) ? $"x -si -aoa -o{targetDirectory} -ttar" : $"-xf - -C {targetDirectory}";
Func <Process, CancellationToken, Task> downloadTaskFunc =
(process, ct) =>
Task.Run(async() => {
try
{
await dedupManifestClient.DownloadToStreamAsync(dedupId, process.StandardInput.BaseStream, proxyUri: null, cancellationToken: ct);
process.StandardInput.BaseStream.Close();
}
catch (Exception e)
{
process.Kill();
ExceptionDispatchInfo.Capture(e).Throw();
}
});
return(RunProcessAsync(
context,
processFileName,
processArguments,
downloadTaskFunc,
() => { },
cancellationToken));
}