CODEWITHSUNDEEP
pythontwisted
vonPetrushev
vonPetrushev

Reputation: 5599

Running twisted daemon with custom configuration

When I write a twisted service that will run with the twistd daemon I also want to make it configurable and run separate daemons, for the same service, with different configurations. But the twistd daemon does not accept (at least I don't see how) custom arguments from the command line, so what I do is to pass the configuration file in the standard input:

twisd -y myservice.py < my.cfg

and then in the myservice.py I have the following:

cfg = parseConfig(sys.stdin.read())
application = Application('myapp')
MyService(a=cfg.a, b=cfg.b).setServiceParent(application)

This is working just fine for me, but I'm wondering if there is The Right Way for doing this?

Upvotes: 0

Views: 567

Answers (2)

vonPetrushev
vonPetrushev

Reputation: 5599

I also want to add one more option without the plugin mechanism, and avoiding the stdio - namely via the env variables:

CONFIG my.cfg twisd -y myservice.py

with the modified code:

cfg = parseConfig(open(os.environ['CONFIG']).read())

(I didn't think of this earlier because of my limited linux experience.)

Upvotes: 0

synthesizerpatel
synthesizerpatel

Reputation: 28036

It looks as if the Twisted way of doing this is documented here:

https://twistedmatrix.com/documents/12.0.0/core/howto/tap.html

You write plugins that add 'subcommands' which can be used via the CLI

Upvotes: 1

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