/// <summary>
/// Initializes a new instance of the <see cref="SessionDispatcher"/> class.
/// </summary>
public SessionDispatcher()
{
TraceFactory.Logger.Debug("Initializing dispatcher...");
EventPublisher = new SessionDispatcherEventPublisher();
_backupFile = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "proxies.dat");
AppDomain.CurrentDomain.ProcessExit += OnDispatcherProcessExit;
int maxEntries = 1;
if (GlobalSettings.IsDistributedSystem)
{
try
{
string count = GlobalSettings.Items["MaxSessionsPerDispatcher"];
if (int.TryParse(count, out maxEntries))
{
TraceFactory.Logger.Debug("Max proxy instances set to {0}".FormatWith(maxEntries));
}
}
catch (SettingNotFoundException ex)
{
TraceFactory.Logger.Error(ex.Message);
}
}
_proxyControllers = new SessionProxyControllerSet(maxEntries);
// Load any existing data in case the dispatcher service died.
//SessionDataLoad();
}
/// <summary>
/// Loads the session data from a local cache
/// </summary>
public void SessionDataLoad()
{
TraceFactory.Logger.Debug("Loading proxy references and subscribers");
EventPublisher.LoadSubscriberData();
// If there is a proxy entries cache file, load it and process it.
if (File.Exists(_backupFile))
{
TraceFactory.Logger.Debug("Cache file exists, loading");
var proxies = LegacySerializer.DeserializeDataContract <SessionProxyControllerSet>(File.ReadAllText(_backupFile));
// If the number of entries is greater than the max, then we need to adjust
// the max to account for all entries.
if (proxies.Count > _proxyControllers.Maximum)
{
_proxyControllers = new SessionProxyControllerSet(proxies.Count);
}
// Create a new entry in the proxie entries and then tell the proxy
// entry to refresh all subscribers.
foreach (var proxy in proxies.Values)
{
try
{
proxy.Channel.Ping();
_proxyControllers.Add(proxy);
TraceFactory.Logger.Debug("Endpoint reloaded for {0}".FormatWith(proxy.SessionId));
}
catch (EndpointNotFoundException ex)
{
TraceFactory.Logger.Debug("Endpoint skipped for {0}:{1}".FormatWith(proxy.SessionId, ex.Message));
}
}
try
{
File.Delete(_backupFile);
TraceFactory.Logger.Debug("deleted {0}".FormatWith(_backupFile));
}
catch (Exception ex)
{
TraceFactory.Logger.Error("Error deleting saved proxies file", ex);
}
}
else
{
TraceFactory.Logger.Debug("Nothing to load...");
}
}