/// <summary>
/// Performs a clean termination of the Ella system<br />
/// Includes
/// <list type="bullet">
/// <item>
/// <description>Stopping all publishers </description>
/// </item>
/// <item>
/// <description>Cancelling all subscriptions </description>
/// </item>
/// <item>
/// <description>Notifying other nodes of the termination </description>
/// </item>
/// </list>
/// </summary>
public static void Ella()
{
_log.Debug("Shutting down Ella");
_log.Debug("Broadcasting shutdown message to all nodes");
/*
* Notify other nodes of the termination
*/
Networking.BroadcastShutdown();
/*
* Cancel all subscriptions
*/
var groupedSubscriptions = EllaModel.Instance.FilterSubscriptions(s => true).GroupBy(s => s.Subscriber).ToArray();
foreach (var s in groupedSubscriptions)
{
Unsubscribe.From(s.Key);
}
_log.Debug("Unsubscribed all subscribers");
/*
* Stop all publishers
*/
var activePublishers = EllaModel.Instance.GetActivePublishers().ToArray();
_log.Debug("Stopping publishers");
foreach (var activePublisher in activePublishers)
{
try
{
Stop.Publisher(activePublisher.Instance);
}
catch (Exception ex)
{
_log.ErrorFormat("Could not stop publisher {0}. {1}", activePublisher.Instance, ex.Message);
}
}
//Join and terminate (if necessary) the publisher threads
var publisherThreads = EllaModel.Instance.PublisherThreads.ToArray();
foreach (Thread t in publisherThreads)
{
if (!t.Join(1000))
{
try
{
t.Abort();
if (!t.Join(1000))
{
_log.DebugFormat("Could not terminate thread {0}. Did all I could.", t);
}
}
catch (Exception)
{
_log.DebugFormat("Could not terminate thread {0}. Did all I could.", t);
}
}
}
Networking.Stop();
}
