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75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
""" This is a sub-module for backend/scheduler functionality. """
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import fedmsg
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import moksha.hub
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import module_build_service.models
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import module_build_service.scheduler.consumer
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import logging
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log = logging.getLogger(__name__)
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def main(initial_messages, stop_condition):
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""" Run the consumer until some condition is met.
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Setting stop_condition to None will run the consumer forever.
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"""
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config = fedmsg.config.load_config()
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config["mbsconsumer"] = True
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config["mbsconsumer.stop_condition"] = stop_condition
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config["mbsconsumer.initial_messages"] = initial_messages
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# Moksha requires that we subscribe to *something*, so tell it /dev/null
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# since we'll just be doing in-memory queue-based messaging for this single
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# build.
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config["zmq_enabled"] = True
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config["zmq_subscribe_endpoints"] = "ipc:///dev/null"
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consumers = [module_build_service.scheduler.consumer.MBSConsumer]
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# Note that the hub we kick off here cannot send any message. You
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# should use fedmsg.publish(...) still for that.
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moksha.hub.main(
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# Pass in our config dict
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options=config,
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# Only run the specified consumers if any are so specified.
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consumers=consumers,
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# Do not run default producers.
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producers=[],
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# Tell moksha to quiet its logging.
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framework=False,
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)
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def make_simple_stop_condition(session):
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""" Return a simple stop_condition callable.
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Intended to be used with the main() function here in manage.py and tests.
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The stop_condition returns true when the latest module build enters the any
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of the finished states.
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"""
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def stop_condition(message):
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# XXX - We ignore the message here and instead just query the DB.
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# Grab the latest module build.
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module = (
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session.query(module_build_service.models.ModuleBuild)
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.order_by(module_build_service.models.ModuleBuild.id.desc())
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.first()
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)
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done = (
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module_build_service.models.BUILD_STATES["failed"],
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module_build_service.models.BUILD_STATES["ready"],
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module_build_service.models.BUILD_STATES["done"],
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)
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result = module.state in done
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log.debug("stop_condition checking %r, got %r" % (module, result))
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return result
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return stop_condition
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