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https://github.com/cloudchacho/taskhawk-python


https://github.com/cloudchacho/taskhawk-python

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README

          

Taskhawk Library for Python
===========================

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TaskHawk is a replacement for celery that works on AWS SQS/SNS and Google PubSub, while keeping things pretty simple and
straightforward. Any unbound function can be converted into a TaskHawk task.

Only Python 3.6+ is supported currently.

You can find the latest, most up to date, documentation at `Read the Docs`_.

Quick Start
-----------

First, install the library:

.. code:: sh

$ pip install taskhawk

Next, set up a few configuration settings:

Common required settings:

.. code:: python

TASKHAWK_QUEUE = "DEV-MYAPP"

When using AWS, additional required settings are:

.. code:: python

AWS_ACCESS_KEY =
AWS_ACCOUNT_ID =
AWS_REGION =
AWS_SECRET_KEY =

TASKHAWK_CONSUMER_BACKEND = 'taskhawk.backends.aws.AWSSQSConsumerBackend'
TASKHAWK_PUBLISHER_BACKEND = 'taskhawk.backends.aws.AWSSNSPublisherBackend'

In case of GCP, additional required settings are:

.. code:: python

TASKHAWK_CONSUMER_BACKEND = 'taskhawk.backends.gcp.GooglePubSubConsumerBackend'
TASKHAWK_PUBLISHER_BACKEND = 'taskhawk.backends.gcp.GooglePubSubPublisherBackend'

If running outside Google Cloud (e.g. locally), set ``GOOGLE_APPLICATION_CREDENTIALS``.

Within Google Cloud, these credentials and permissions are managed by Google using IAM.

If the Pub/Sub resources lie in a different project, set ``GOOGLE_CLOUD_PROJECT`` to the project id.

For Django projects, simple use `Django settings`_ to configure Taskhawk. For Flask projects, use `Flask config`_.
For other frameworks, you can either declare an environment variable called ``SETTINGS_MODULE`` that points to a
module where settings may be found, or manually configure using ``taskhawk.conf.settings.configure_with_object``.

Then, simply add the decorator ``taskhawk.task`` to your function:

.. code:: python

@taskhawk.task
def send_email(to: str, subject: str, from_email: str = None) -> None:
# send email

And finally, dispatch your function asynchronously:

.. code:: python

send_email.dispatch('example@email.com', 'Hello!', from_email='example@spammer.com')

Development
-----------

Getting Started
~~~~~~~~~~~~~~~
Assuming that you have Python, ``pyenv`` and ``pyenv-virtualenv`` installed, set up your
environment and install the required dependencies like this instead of
the ``pip install taskhawk`` defined above:

.. code:: sh

$ git clone https://github.com/cloudchacho/taskhawk-python.git
$ cd taskhawk-python
$ pyenv virtualenv 3.7.7 taskhawk-python-3.7
...
$ pyenv activate taskhawk-python-3.7
$ pip install -r requirements/dev-3.7.txt

Running Tests
~~~~~~~~~~~~~
You can run tests in using ``make test``. By default,
it will run all of the unit and functional tests, but you can also specify your own
``py.test`` options.

.. code:: sh

$ py.test
$ py.test tests/test_consumer.py

Generating Documentation
~~~~~~~~~~~~~~~~~~~~~~~~
Sphinx is used for documentation. You can generate HTML locally with the
following:

.. code:: sh

$ pip install -e .[dev]
$ make docs

Getting Help
------------

We use GitHub issues for tracking bugs and feature requests.

* If it turns out that you may have found a bug, please `open an issue `__

.. _Read the Docs: https://taskhawk.readthedocs.io/en/latest/
.. _Django settings: https://docs.djangoproject.com/en/2.0/topics/settings/
.. _Flask config: https://flask.palletsprojects.com/en/1.1.x/config/