在openshift上运行带有无限循环的简单python应用程序

Question

I'm writing small & simple telegram bot on python. I never used this language in my work and decided that's a good way to learn by practice.

To get updates my app currently uses long polling called from an endless loop.

So I'm basically searching for the simplest way to run this app on openshift. I tried to use this example on flask but it didn't work. There are a lot of other options to implement background infinite processes with multiprocessing (from django and cerely to tornado) but it seems that all of them are way too advanced and complicated for my rather modest needs.

Answer 1

If the polling is not event driven, then you could use 'cron' (you can add cron cartridge to your gear) to periodically trigger your python script, that does the work and "dies".

However, keep in mind that Openshfit is not really intended to be your worker thread (unless you are on the bronze plan or higher). Unless you receive an external request to your gear within 24 hour period, your gear will be "idled" and your process will no longer run.

The way to get around this, "officially", is probably to get the bronze plan (you will not be charged unless you require the 4th gear instance),

"Unofficially", you can create a gear with python that will give you a default website. Then you create a new python script that does your job and trigger it using cron. To keep the gear from idling, use something like uptimerobot to ping your "website" every day.

Answer 2

How do I get SSL for my domains?

If you are still getting by on OpenShift Online's generous Free plan, you'll see a warning message at the top of your application's SSL configuration area. You can always take advantage of our *.rhcloud.com wildcard certificate in order to securely connect to any application via it's original, OpenShift-provided hostname URL.

Tornado is very simple, my first steps in telegram bot dev I did using this server on openshift platform.