I'm trying to work with AppDomains for the first time and I'm finding myself a bit lost.
Here is what I've done: I have a console app that instantiates a Bootstrapper class and calls Bootstrapper.Bootstrap.
The class looks something like this:
public class Bootstrapper : MarshalByRefObject
{
private static AppDomain SecondaryAppDomain;
private Bootstrapper _secondaryDomainBootstrapper;
public Robot CurrentlyRunningRobot;
public Bootstrapper OwningBootstrapper;
public Bootstrapper()
{
}
public void Bootstrap()
{
InitializeSecondaryAppDomain();
RunInSecondaryAppDomain();
}
private void DestroySecondaryAppDomain()
{
AppDomain.Unload(SecondaryAppDomain);
}
private static int initCount = 0;
private static void InitializeSecondaryAppDomain()
{
initCount++;
SecondaryAppDomain = AppDomain.CreateDomain("SecondaryAppDomain" + initCount);
}
private void RunInSecondaryAppDomain()
{
_secondaryDomainBootstrapper =
(Bootstrapper)
SecondaryAppDomain.CreateInstanceAndUnwrap(Assembly.GetExecutingAssembly().FullName,
"myNamespace.Bootstrapper");
_secondaryDomainBootstrapper.OwningBootstrapper = this;
_secondaryDomainBootstrapper.Initialize(Args);
}
private void Initialize(string[] args)
{
//Do some stuff...
//Start() returns Task<Robot>
var robot = Initializer.Start();
CurrentlyRunningRobot = robot.Result;
CurrentlyRunningRobot.HardResetRequested += OnHardResetRequested;
robot.Wait();
}
private void DoHardReset()
{
DestroySecondaryAppDomain();
InitializeSecondaryAppDomain();
RunInSecondaryAppDomain();
}
private void OnHardResetRequested(object sender, EventArgs e)
{
OwningBootstrapper.DoHardReset();
}
}
The intention is that whatever is running in the Secondary domain and request that it be terminated and restarted.
What's happening, though, is that when I call DestroySecondaryAppDomain() (from within the default AppDomain) I wind up with ThreadAbortExceptions.
I've been reading a bunch of docs and that seems totally normal. The thing that I'm having difficulty with is why I can't seem to deal with it in my default AppDomain.
When the secondary AppDomain is unloaded (in DestroySecondaryAppDomain) I never get to execute the rest of the code in DoHardReset. What (probably simple) thing am I failing to understand?
