/// <summary>
/// Event handler for service stopping operation.
/// </summary>
/// <param name="sender">Event source.</param>
/// <param name="e">Event arguments.</param>
/// <remarks>
/// Time-series framework uses this handler to un-wire events and dispose of system objects.
/// </remarks>
protected virtual void ServiceStoppingHandler(object sender, EventArgs e)
{
// Stop generation zero garbage collection timer
if (m_gcGenZeroTimer != null)
{
m_gcGenZeroTimer.Enabled = false;
m_gcGenZeroTimer.Elapsed -= m_gcGenZeroTimer_Elapsed;
m_gcGenZeroTimer.Dispose();
}
m_gcGenZeroTimer = null;
// Dispose system health exporter
if (m_healthExporter != null)
{
m_healthExporter.Enabled = false;
m_serviceHelper.ServiceComponents.Remove(m_healthExporter);
m_healthExporter.Dispose();
m_healthExporter.StatusMessage -= m_iaonSession.StatusMessageHandler;
m_healthExporter.ProcessException -= m_iaonSession.ProcessExceptionHandler;
}
m_healthExporter = null;
// Dispose system status exporter
if (m_statusExporter != null)
{
m_statusExporter.Enabled = false;
m_serviceHelper.ServiceComponents.Remove(m_statusExporter);
m_statusExporter.Dispose();
m_statusExporter.StatusMessage -= m_iaonSession.StatusMessageHandler;
m_statusExporter.ProcessException -= m_iaonSession.ProcessExceptionHandler;
}
m_statusExporter = null;
// Dispose Iaon session
if (m_iaonSession != null)
{
m_serviceHelper.ServiceComponents.Remove(m_iaonSession.InputAdapters);
m_serviceHelper.ServiceComponents.Remove(m_iaonSession.ActionAdapters);
m_serviceHelper.ServiceComponents.Remove(m_iaonSession.OutputAdapters);
m_iaonSession.Dispose();
m_iaonSession.StatusMessage -= m_iaonSession_StatusMessage;
m_iaonSession.ProcessException -= m_iaonSession_ProcessException;
}
m_iaonSession = null;
m_serviceHelper.ServiceStarting -= ServiceStartingHandler;
m_serviceHelper.ServiceStarted -= ServiceStartedHandler;
m_serviceHelper.ServiceStopping -= ServiceStoppingHandler;
if (m_serviceHelper.StatusLog != null)
{
m_serviceHelper.StatusLog.Flush();
m_serviceHelper.StatusLog.LogException -= LogExceptionHandler;
}
if (m_serviceHelper.ErrorLogger != null && m_serviceHelper.ErrorLogger.ErrorLog != null)
{
m_serviceHelper.ErrorLogger.ErrorLog.Flush();
m_serviceHelper.ErrorLogger.ErrorLog.LogException -= LogExceptionHandler;
}
if ((object)m_configurationCacheComplete != null)
{
// Release any waiting threads before disposing wait handle
m_configurationCacheComplete.Set();
m_configurationCacheComplete.Dispose();
}
m_configurationCacheComplete = null;
// Unattach from handler for unobserved task exceptions
TaskScheduler.UnobservedTaskException -= TaskScheduler_UnobservedTaskException;
}
/// <summary>
/// Event handler for service started operation.
/// </summary>
/// <param name="sender">Event source.</param>
/// <param name="e">Event arguments.</param>
/// <remarks>
/// Time-series framework uses this handler to handle initialization of system objects.
/// </remarks>
protected virtual void ServiceStartedHandler(object sender, EventArgs e)
{
// Define a line of asterisks for emphasis
string stars = new string('*', 79);
// Log startup information
m_serviceHelper.UpdateStatus(
UpdateType.Information,
"\r\n\r\n{0}\r\n\r\n" +
"Node {{{1}}} Initializing\r\n\r\n" +
" System Time: {2} UTC\r\n\r\n" +
" Current Path: {3}\r\n\r\n" +
" Machine Name: {4}\r\n\r\n" +
" OS Version: {5}\r\n\r\n" +
" Product Name: {6}\r\n\r\n" +
" Working Memory: {7}\r\n\r\n" +
" Execution Mode: {8}-bit\r\n\r\n" +
" Processors: {9}\r\n\r\n" +
" GC Server Mode: {10}\r\n\r\n" +
" GC Latency Mode: {11}\r\n\r\n" +
" Process Account: {12}\\{13}\r\n\r\n" +
"{14}\r\n",
stars,
m_iaonSession.NodeID,
DateTime.UtcNow.ToString("yyyy-MM-dd HH:mm:ss.fff"),
FilePath.TrimFileName(FilePath.RemovePathSuffix(FilePath.GetAbsolutePath("")), 61),
Environment.MachineName,
Environment.OSVersion.VersionString,
Registry.GetValue("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion", "ProductName", null).ToNonNullString("<Unavailable>"),
SI2.ToScaledIECString(Environment.WorkingSet, 3, "B"),
IntPtr.Size * 8,
Environment.ProcessorCount,
GCSettings.IsServerGC,
GCSettings.LatencyMode,
Environment.UserDomainName,
Environment.UserName,
stars);
// Create health exporter
m_healthExporter = new MultipleDestinationExporter("HealthExporter", Timeout.Infinite);
m_healthExporter.Initialize(new ExportDestination[] { new ExportDestination(FilePath.GetAbsolutePath("Health.txt"), false) });
m_healthExporter.StatusMessage += m_iaonSession.StatusMessageHandler;
m_healthExporter.ProcessException += m_iaonSession.ProcessExceptionHandler;
m_serviceHelper.ServiceComponents.Add(m_healthExporter);
// Create status exporter
m_statusExporter = new MultipleDestinationExporter("StatusExporter", Timeout.Infinite);
m_statusExporter.Initialize(new ExportDestination[] { new ExportDestination(FilePath.GetAbsolutePath("Status.txt"), false) });
m_statusExporter.StatusMessage += m_iaonSession.StatusMessageHandler;
m_statusExporter.ProcessException += m_iaonSession.ProcessExceptionHandler;
m_serviceHelper.ServiceComponents.Add(m_statusExporter);
// Define scheduled service processes
m_serviceHelper.AddScheduledProcess(HealthMonitorProcessHandler, "HealthMonitor", "* * * * *"); // Every minute
m_serviceHelper.AddScheduledProcess(StatusExportProcessHandler, "StatusExport", "*/30 * * * *"); // Every 30 minutes
// Add key Iaon collections as service components
m_serviceHelper.ServiceComponents.Add(m_iaonSession.InputAdapters);
m_serviceHelper.ServiceComponents.Add(m_iaonSession.ActionAdapters);
m_serviceHelper.ServiceComponents.Add(m_iaonSession.OutputAdapters);
// Define remote client requests (i.e., console commands)
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("List", "Displays status for specified adapter or collection", ListRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("Connect", "Connects (or starts) specified adapter", StartRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("Disconnect", "Disconnects (or stops) specified adapter", StopRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("Invoke", "Invokes a command for specified adapter", InvokeRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("ListCommands", "Displays possible commands for specified adapter", ListCommandsRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("Initialize", "Initializes specified adapter or collection", InitializeRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("ReloadConfig", "Manually reloads the system configuration", ReloadConfigRequstHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("UpdateConfigFile", "Updates an option in the configuration file", UpdateConfigFileRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("Authenticate", "Authenticates network shares for health and status exports", AuthenticateRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("Restart", "Attempts to restart the host service", RestartServiceHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("RefreshRoutes", "Spawns request to recalculate routing tables", RefreshRoutesRequestHandler));
m_serviceHelper.ClientRequestHandlers.Add(new ClientRequestHandler("TemporalSupport", "Detemines if any adapters support temporal processing", TemporalSupportRequestHandler));
try
{
// Start system initialization on an independent thread so that service responds in a timely fashion...
ThreadPool.QueueUserWorkItem(InitializeSystem);
}
catch (Exception ex)
{
// Process exception for logging
DisplayStatusMessage("Failed to queue system initialization due to exception: {0}", UpdateType.Alarm, ex.Message);
m_serviceHelper.ErrorLogger.Log(ex);
}
}
