Hi I have no experience with task queues and am thinking to adapt my code from both the web2py example of homemade task queues at:
http://web2py.com/books/default/chapter/29/08/emails-and-sms?search=Sending+messages+using+a+background+task#Sending-messages-using-a-background-task and pythonanywhere longRunningTasks script at: https://help.pythonanywhere.com/pages/LongRunningTasks/ this page tells the programmer to make sure his code is *resilient to being terminated unexpectedly*: what is that mean ? For instance can this code extracted from the w2p book be considered resilient : BOOK EXTRACT: First, in a model file within our application, we set up a database model to store our email queue: 1 2 3 4 5 db.define_table('queue', Field('status'), Field('email'), Field('subject'), Field('message')) >From a controller, we can then enqueue messages to be sent by: 1 2 3 4 db.queue.insert(status='pending', email='y...@example.com', subject='test', message='test') Next, we need a background processing script that reads the queue and sends the emails: 1 2 3 4 5 6 7 8 9 10 11 12 13 ## in file /app/private/*mail_queue.py* import time while True: rows = db(db.queue.status=='pending').select() for row in rows: if mail.send(to=row.email, subject=row.subject, message=row.message): row.update_record(status='sent') else: row.update_record(status='failed') db.commit() time.sleep(60) # check every minute I didn't investigate too much so far but I might adapt the pythonanywhere script to trigger something derived from *mail_queue.py* via python *subprocess* module. would this be an orthodox/resilient way to proceed with scheduled tasks ? https://docs.python.org/2/library/subprocess.html -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
