/// <inheritdoc/>
public override int ExecuteCommand(string commandText, int timeout, out string commandOutput, out string errorMessage)
{
using (var cancellationTokenSource = new CancellationTokenSource())
{
Task <ProcessResult> task = LocalProcessAsyncRunner.ExecuteProcessAsync(WSLCommandLine.GetExecStartInfo(this.Name, commandText), cancellationTokenSource.Token);
#pragma warning disable VSTHRD002 // Avoid problematic synchronous waits
if (!task.Wait(timeout))
{
cancellationTokenSource.Cancel();
throw new TimeoutException();
}
ProcessResult result = task.Result;
#pragma warning restore VSTHRD002 // Avoid problematic synchronous waits
commandOutput = string.Join("\n", result.StdOut);
errorMessage = string.Join("\n", result.StdErr);
return(result.ExitCode);
}
}
public static IEnumerable <string> GetInstalledDistros()
{
HashSet <string> distributions = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
ThreadHelper.JoinableTaskFactory.Run(StringResources.WaitingOp_EnumeratingWSLDistros, async(progress, cancellationToken) =>
{
ProcessStartInfo startInfo = GetWSLStartInfo("-l -v", Encoding.Unicode);
ProcessResult processResult = await LocalProcessAsyncRunner.ExecuteProcessAsync(startInfo, cancellationToken);
if (processResult.ExitCode != 0)
{
const int NoDistrosExitCode = -1;
if (processResult.ExitCode == NoDistrosExitCode)
{
// Older versions of wsl don't like the '-v' and will also fail with -1 for that reason. Check if this is why we are seeing the failure
ProcessResult retryResult = await LocalProcessAsyncRunner.ExecuteProcessAsync(GetWSLStartInfo("-l", Encoding.Unicode), cancellationToken);
// If the exit code is still NoDistros then they really don't have any distros
if (retryResult.ExitCode == NoDistrosExitCode)
{
throw new WSLException(StringResources.Error_WSLNoDistros);
}
// For any other code, they don't have WSL 2 installed.
else
{
throw new WSLException(StringResources.WSL_V2Required);
}
}
else
{
if (processResult.StdErr.Count > 0)
{
VsOutputWindowWrapper.WriteLine(StringResources.Error_WSLExecErrorOut_Args2.FormatCurrentCultureWithArgs(startInfo.FileName, startInfo.Arguments));
foreach (string line in processResult.StdErr)
{
VsOutputWindowWrapper.WriteLine("\t" + line);
}
}
throw new WSLException(StringResources.Error_WSLEnumDistrosFailed_Args1.FormatCurrentCultureWithArgs(processResult.ExitCode));
}
}
// Parse the installed distributions
/* Ouput looks like:
* NAME STATE VERSION
* Ubuntu Stopped 2
* docker-desktop-data Running 2
* docker-desktop Running 2
*/
Regex distributionRegex = new Regex(@"^\*?\s+(?<name>\S+)\s");
foreach (string line in processResult.StdOut.Skip(1))
{
Match match = distributionRegex.Match(line);
if (match.Success)
{
string distroName = match.Groups["name"].Value;
if (distroName.StartsWith("docker-desktop", StringComparison.OrdinalIgnoreCase))
{
continue;
}
distributions.Add(distroName);
}
}
});
if (distributions.Count == 0)
{
throw new WSLException(StringResources.Error_WSLNoDistros);
}
return(distributions);
}