web.py cron

#this function allows us to do periodic things
#not perfect, but eh. 
#for now this simply updates the statistics
#but could easily be used to do more "cron" like things
#this gets called for EVERY page, so don't do any heavy lifting
next_cron_run = 0
def my_processor(handler): 
    global next_cron_run
    if (time.time() > next_cron_run):
        logger.debug("DOING CRON RUN")
        thr = threading.Thread(target=update_db)
        thr.start()
        next_cron_run = time.time() + (60*60) # run again in 1 hour
    
    return handler()

app.add_processor(my_processor)




def update_db():
    global t_globals
    logger.info("Start updating blog data")
    m.BlogData.update_stats()
    blog_data(update=True)
    logger.info("Finish updating blog data")