Skip to main content

mixins for tornado

Project description

tornadoist -currently- provides Mixins to execute code outside tornado.ioloop.IOLoop to avoid blocking. These are:

  • CeleryMixin: Celery Tasks
  • ProcessMixin: Functions in separate process

Both support results, avoids polling or timeouts. More info below.

Demo app included. (Celery with mongodb:// preconfigured in demo app)

CeleryMixin

CeleryMixin is a Mixin class to use with tornado.web.RequestHandler that provides a Tornado-like interface to running Celery tasks on TornadoServer.

HowTO

Using tornado.gen

from tornado import web, gen
from tornadoist import CeleryMixin

class CeleryHandler(tornado.web.RequestHandler, CeleryMixin):
    @web.asynchronous
    @gen.engine
    def get(self):
        result = yield gen.Task(self.add_task, some_task, 'somearg')
        self.write('Hello %s World!' % result)
        self.finish()

Or using explicit callback

class CeleryHandler(tornado.web.RequestHandler, CeleryMixin):
    @tornado.web.asynchronous
    def get(self):
        self.add_task(some_task, callback=self._on_result)

    def _on_result(self, result):
        do_something_with_result(result)
        self.finish()

ProcessMixin

ProcessMixin is a Mixin class to use with tornado.web.RequestHandler that provides a Tornado-like interface to running functions with multiprocessing.Process outside IOLoop.

HowTO

Using tornado.gen

from tornado import web, gen
from tornadoist import ProcessMixin

class ProcessHandler(tornado.web.RequestHandler, ProcessMixin):
    @tornado.web.asynchronous
    @tornado.gen.engine
    def get(self):
        result = yield tornado.gen.Task(self.add_task, my_blocking_function,
                                        'somearg', some_kwarg=42)
        self.write('Hello Process World! %s' % result)
        self.finish()

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Files for tornadoist, version 0.5.2
Filename, size File type Python version Upload date Hashes
Filename, size tornadoist-0.5.2.tar.gz (4.3 kB) File type Source Python version None Upload date Hashes View

Supported by

AWS AWS Cloud computing Datadog Datadog Monitoring Facebook / Instagram Facebook / Instagram PSF Sponsor Fastly Fastly CDN Google Google Object Storage and Download Analytics Huawei Huawei PSF Sponsor Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Salesforce Salesforce PSF Sponsor Sentry Sentry Error logging StatusPage StatusPage Status page