private void TryCleanupUnusedAdminBuildpacks(StagingStartRequestAdminBuildpack[] adminBuildpacks, string adminBuildpackDir)
{
if (!Directory.Exists(adminBuildpackDir))
{
return;
}
var cachedAdminBuilpacks = new DirectoryInfo(adminBuildpackDir).EnumerateDirectories().ToDictionary(di => di.Name, di => di.FullName);
var adminBuildpacksLookup = adminBuildpacks.ToLookup(ab => ab.Key);
foreach (var cachedBuildpack in cachedAdminBuilpacks)
{
if (adminBuildpacksLookup.Contains(cachedBuildpack.Key))
{
continue;
}
bool signaled = false;
var buildpackMutex = new Mutex(false, AdminBuildpackMutexName(cachedBuildpack.Key));
try
{
signaled = buildpackMutex.WaitOne(0);
if (signaled)
{
Logger.Info("Deleting old admin buildpack {0} from {1}", cachedBuildpack.Key, cachedBuildpack.Value);
Directory.Delete(cachedBuildpack.Value, true);
}
}
finally
{
if (signaled)
{
buildpackMutex.ReleaseMutex();
}
buildpackMutex.Dispose();
}
}
}
