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Add rollback capability if update extraction fails

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This commit is contained in:
Eric Reed 2013-04-10 16:07:31 -04:00
parent d327095b4b
commit 236b79cc8a
1 changed files with 8 additions and 10 deletions
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18
MediaBrowser.Installer/MainWindow.xaml.cs
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@ -241,7 +241,6 @@ namespace MediaBrowser.Installer
} }
catch (Exception e) catch (Exception e)
{ {
SystemClose("Error Removing Archive - " + e.GetType().FullName + "\n\n" + e.Message); SystemClose("Error Removing Archive - " + e.GetType().FullName + "\n\n" + e.Message);
return; return;
} }
@ -399,17 +398,12 @@ namespace MediaBrowser.Installer
protected void ExtractPackage(string archive) protected void ExtractPackage(string archive)
{ {
// Delete old content of system // Delete old content of system
var systemDir = Path.Combine(RootPath, "system"); var systemDir = Path.Combine(RootPath, "System");
var backupDir = Path.Combine(RootPath, "System.old");
if (Directory.Exists(systemDir)) if (Directory.Exists(systemDir))
{ {
try if (Directory.Exists(backupDir)) Directory.Delete(backupDir,true);
{ Directory.Move(systemDir, backupDir);
Directory.Delete(systemDir, true);
}
catch
{
// we tried...
}
} }
// And extract // And extract
@ -437,6 +431,10 @@ namespace MediaBrowser.Installer
} }
else else
{ {
//Rollback
if (Directory.Exists(systemDir)) Directory.Delete(systemDir);
Directory.Move(backupDir, systemDir);
File.Delete(archive); // so we don't try again if its an update
throw; throw;
} }
} }