internal bool CheckIsAlive()
{
try
{
Target.Ping();
return(true);
}
catch (Exception ex)
{
Logger.Error(ex, $"Could not ping {ServiceName}");
Target = null;
return(false);
}
}
// COM Endpoint from IDvcChannelBroker
public IBrokeredDvcServiceRegistration RegisterService(string name, IBrokeredDvcService service)
{
if (string.IsNullOrWhiteSpace(name))
{
throw new ArgumentNullException(nameof(name));
}
if (service == null)
{
throw new ArgumentNullException(nameof(service));
}
ServiceRegistration existingRegistration;
lock (syncRegisteredServices)
{
RegisteredServices.TryGetValue(name, out existingRegistration);
}
if (existingRegistration != null)
{
if (existingRegistration.CheckIsAlive())
{
throw new InvalidOperationException($"Service '{name}' is already registered");
}
else
{
KillRegistration(existingRegistration);
}
}
// May leak if TOCTOU
existingRegistration = new ServiceRegistration(name, service);
lock (syncRegisteredServices)
{
// May throw if TOCTOU... I'm fine with that.
RegisteredServices.Add(name, existingRegistration);
}
return(new UnregisterProxy(this, existingRegistration));
}
public void Dispose()
{
Target = null;
}
public ServiceRegistration(string name, IBrokeredDvcService service)
{
this.ServiceName = name;
this.Target = service;
}
