private static void RunTaskOnNewTopic(object topicSleepTask)
{
if (topicSleepTask == null)
{
return;
}
AppKeepAliveTask task = (AppKeepAliveTask)topicSleepTask;
log.Info("deserialized AppKeepAliveTask task");
// give a little time to make sure the taskqueue was updated after spawning the topic
Thread.Sleep(10000); // 10 seconds
task.RunTask();
log.Info("started AppKeepAliveTask task");
}
private void StartOrResumeTasks()
{
// NOTE: In IIS 7 using integrated mode, HttpContext.Current will always be null in Application_Start
// http://weblogs.asp.net/jgaylord/archive/2008/09/04/iis7-integrated-mode-and-global-asax.aspx
if (WebConfigSettings.UseAppKeepAlive)
{
AppKeepAliveTask keepAlive;
try
{
try
{
if ((HttpContext.Current != null) && (HttpContext.Current.Request != null))
{
keepAlive = new AppKeepAliveTask();
keepAlive.UrlToRequest = WebUtils.GetSiteRoot();
keepAlive.MaxRunTimeMinutes = WebConfigSettings.AppKeepAliveMaxRunTimeMinutes;
keepAlive.MinutesToSleep = WebConfigSettings.AppKeepAliveSleepMinutes;
keepAlive.QueueTask();
}
}
catch (HttpException)
{
//this error will be thrown when using IIS 7 Integrated pipeline mode
//since we have no context.Request to get the site root, in IIS 7 Integrated pipeline mode
//we need to use an additional config setting to get the url to request for keep alive
if (WebConfigSettings.AppKeepAliveUrl.Length > 0)
{
keepAlive = new AppKeepAliveTask();
keepAlive.UrlToRequest = WebConfigSettings.AppKeepAliveUrl;
keepAlive.MaxRunTimeMinutes = WebConfigSettings.AppKeepAliveMaxRunTimeMinutes;
keepAlive.MinutesToSleep = WebConfigSettings.AppKeepAliveSleepMinutes;
keepAlive.QueueTask();
}
}
}
catch (Exception ex)
{
// if a new installation the table will not exist yet so just log and swallow
log.Error(ex);
}
}
WebTaskManager.StartOrResumeTasks(true);
}