/// <summary>
/// This override sends the service start message.
/// </summary>
protected override void StartInternal()
{
//This method starts the components in the service in the correct order.
try
{
mEventsWrapper.OnStartRequested();
//This method initialises the configuration.
EventStart(() => ConfigurationInitialise(), "Configuration");
//This initialises the process loop.
EventStart(() => CoreEngineInitialize(), "Core Engine Initialization");
//This method initialises the serialization container.
EventStart(() => ServiceStart(mServiceHandlers), "Service Handlers Container");
//Start data collection.
EventStart(() => ServiceStart(mDataCollection), "Data Collection");
//OK, register the resource tracker
EventStart(() => ServiceStart(mResourceMonitor), "Resource Tracker");
//This method connects any components that require Shared Service together before they start.
EventStart(() => mCommands.SharedServicesConnect(), "Command Shared Services");
//Ensure that the communication handler is working.
EventStart(() => ServiceStart(mCommunication), "Communication Container");
//Start the senders
EventStart(() => mCommunication.SendersStart(), "Communication Senders");
//Ensure that any handlers are registered.
EventStart(() => ServiceStart(mCommands), "Commands Container");
//OK, start the loop to start processing requests and picking up messages from the listeners.
EventStart(() => TaskManagerStart(), "Task Manager");
//Finally register the housekeeping schedules.
EventStart(() => SchedulesRegister(), "Scheduler");
//OK start the commands in parallel at the same priority group.
EventStart(() => mCommands.CommandsStart(ServiceStart), "Commands");
//Now start the listeners and deadletter listeners
EventStart(() => mCommunication.ListenersStart(), "Communication Listeners");
//OK start the commands in parallel at the same priority group.
EventStart(() => Dispatch = new DispatchWrapper(mServiceHandlers, mTaskManager.ExecuteOrEnqueue, () => Status
, Policies.TaskManager.TransmissionPayloadTraceEnabled)
, "Dispatch Wrapper");
//Signal that start has completed.
mEventsWrapper.OnStartCompleted();
//Do a final log now that everything has started up.
LogStatistics().Wait(TimeSpan.FromSeconds(1));
}
catch (Exception ex)
{
try
{
//Throw the original exception.
mDataCollection?.LogException("StartInternal unhandled exception thrown - service is stopping", ex);
//Just try and tidy up where possible.
StopInternal();
}
catch (Exception)
{
// Nothing do be done here
}
//Throw the original exception out to the initiating party
throw ex;
}
}
