protected override void OnStart(string[] args)
{
try
{
AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.UnhandledException += UnhandledExceptionEventHandler;
string info = string.Format(Emailer.startedMessageTempl, Environment.MachineName, DateTime.Now);
log.Info(info);
InitializeDivaInstance();
InitializeSettings(GetSettingsFromDatabase());
ServiceDAO.ResetIlcState();
ExecutorFactory.Instance.ConstructExecutor(ServiceDAO.GetScenarios());
projectIdsByCronExpressions = GetProjectIdsByCronExpressions();
InitializeSchedulerAsync();
settingsReloadTimer = new Timer(CheckSettingsVersionAndReloadIfNeeded, null, TIMER_DUE, TIMER_PERIOD);
fileWatcher = new FileSystemWatcher(Path.GetDirectoryName(Process.GetCurrentProcess().MainModule.FileName));
fileWatcher.NotifyFilter = NotifyFilters.LastWrite;
fileWatcher.Filter = Process.GetCurrentProcess().MainModule.ModuleName + ".config";
fileWatcher.EnableRaisingEvents = true;
fileWatcher.Changed += OnConfigFileChanged;
if (Emailer.SendEmail("", info, AppSettings.GetCommonRecipientEmailAddresses()))
{
scheduler.Start();
// Normal exit
return;
}
log.Error("Failed to send email. Service will be stopped.");
}
catch (CompileErrorException e)
{
log.Error("Script compiler error.");
Emailer.SendEmail(e.Message, "Script compiler error.",
AppSettings.GetCommonRecipientEmailAddresses(), e.FileName);
}
catch (Exception e)
{
String failureMessage = e.Message + "\n" + e.StackTrace;
log.Error("OnStart()", e);
// Error handling
Emailer.SendEmail(failureMessage, Emailer.generalFailureSubject,
AppSettings.GetCommonRecipientEmailAddresses());
}
Stop();
}
protected override void OnStop()
{
// any tear-down necessary to stop your service.
LineCheckerJob.serviceShutdown = true;
if (scheduler != null)
{
scheduler.Shutdown(true);
}
// TODO
string info = string.Format(Emailer.stoppedMessageTempl, Environment.MachineName, DateTime.Now);
log.Info(info);
Emailer.SendEmail("", info, AppSettings.GetCommonRecipientEmailAddresses());
}
/// <summary>
/// changes settings on the fly if needed
/// </summary>
/// <param name="stateInfo">parameter required by callback signature</param>
public void CheckSettingsVersionAndReloadIfNeeded(Object stateInfo)
{
log.Info("CheckSettingsVersionAndReloadIfNeeded()...");
try
{
// To avoid Timer Event Reentrance
settingsReloadTimer.Change(Timeout.Infinite, Timeout.Infinite);
if (!IsReloadNeeded())
{
return;
}
// restart quartz
scheduler.Shutdown(true);
IDictionary settings = null;
try
{
settings = GetSettingsFromDatabase();
projectIdsByCronExpressions = GetProjectIdsByCronExpressions();
log.Info("Trying to apply new settings. Version: " + settings[AppSettings.SettingsVersion]);
}
catch (Exception ex)
{
log.Info("Can't get service settings from database", ex);
log.Info("Trying to restore previous settings. Version: " + AppSettings.GetSettingsVersion());
settings = AppSettings.AppSettingsMap;
}
configFileChanged = false;
foreach (string s in new string[] { "appSettings", "connectionStrings", "log4net", "common/logging" })
{
ConfigurationManager.RefreshSection(s);
}
LogManager.Adapter = null;
log = LogManager.GetLogger(AppSettings.GetCommonLoggerName());
InitializeSettings(settings);
InitializeSchedulerAsync();
scheduler.Start();
}
catch (Exception e)
{
// we can't get settings
String failureMessage = e.Message + "\n" + e.StackTrace;
log.Error("CheckSettingsVersionAndReloadIfNeeded", e);
Emailer.SendEmail(failureMessage, Emailer.generalFailureSubject,
AppSettings.GetCommonRecipientEmailAddresses());
Stop();
}
finally
{
settingsReloadTimer.Change(TIMER_DUE, TIMER_PERIOD);
}
}