private bool TryDownloadUpgrade(ProductUpgrader productUpgrader, out string errorMessage)
{
using (ITracer activity = this.tracer.StartActivity("Checking for product upgrades.", EventLevel.Informational))
{
Version newerVersion = null;
string detailedError = null;
if (!productUpgrader.TryGetNewerVersion(out newerVersion, out detailedError))
{
errorMessage = "Could not fetch new version info. " + detailedError;
return false;
}
if (newerVersion == null)
{
// Already up-to-date
// Make sure there a no asset installers remaining in the Downloads directory. This can happen if user
// upgraded by manually downloading and running asset installers.
productUpgrader.CleanupDownloadDirectory();
errorMessage = null;
return true;
}
if (productUpgrader.TryDownloadNewestVersion(out detailedError))
{
errorMessage = null;
return true;
}
else
{
errorMessage = "Could not download product upgrade. " + detailedError;
return false;
}
}
}
private void TimerCallback(object unusedState)
{
string errorMessage = null;
InstallerPreRunChecker prerunChecker = new InstallerPreRunChecker(this.tracer, string.Empty);
ProductUpgrader productUpgrader = new ProductUpgrader(ProcessHelper.GetCurrentProcessVersion(), this.tracer);
if (prerunChecker.TryRunPreUpgradeChecks(out string _) && this.TryDownloadUpgrade(productUpgrader, out errorMessage))
{
return;
}
productUpgrader.CleanupDownloadDirectory();
if (errorMessage != null)
{
this.tracer.RelatedError(errorMessage);
}
}