private bool IsReloadNeeded()
{
if (configFileChanged)
{
return(true);
}
try
{
uint ver = ServiceDAO.GetSettingsVersion();
if (AppSettings.GetSettingsVersion() != ver)
{
log.Info("Service settings have been changed from " + AppSettings.GetSettingsVersion() +
" to " + ver);
return(true);
}
}
catch (Exception ex)
{
log.Info("Can't get service settings version from database", ex);
}
return(false);
}
/// <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);
}
}