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django-serverless-oauth-session

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django-serverless-oauth-session

Provides a Django app for storing tokens in AWS's DynamoDB, and providing a convenient requests session which uses the token. This is a use-case-specific library, and is intended for backend integrations that must authenticate with an API which only supports OAuth2 for its authentication protocol.

0.5.0
PyPI
Maintainers
1

Don't Use

This is in super-duper early development. Stay away!

Introduction

This is a use-case specific library, enabling you to quickly get up and running with a backend integration where OAuth2 is necessary.

This package assumes you're not using Django's ORM (a SQL database) and that you are using AWS. If so, the point is to spin up a DynamoDB table with which your application can store an OAuth token from an authenticating user. This table will only have one active token at a time, which is the token of the most recent user to authenticate. Past tokens are kept around for up to one month.

This package is certainly not intended for a user-facing web-application.

Usage

Taking a looking at the example project will probably tell you everything you need to know, but here are the explicit details.

settings.py

In your settings.py, add django_serverless_oauth_session to your INSTALLED_APPS

# settings.py

INSTALLED_APPS = [
    # ...
    "django_serverless_oauth_session",
]

NOTE

By registering this app, the DynamoDB table will be created in AWS on the start-up of the app if it doesn't already exist. To turn this off, set OAUTH_TOKEN_TABLE_CREATE = False in settings.py. This might be useful if you need to add KMS keys to your table, or you'd rather provision in some other way.

Also, your environment must have your AWS credentials ready to go, just like you would have them set-up for boto3.

Set a LOGIN_REDIRECT_URL

# settings.py

LOGIN_REDIRECT_URL = "/"

And finally, fill in your OAuth provider's details, as well as some info for AWS

# settings.py

# AWS stuff
OAUTH_TOKEN_TABLE_NAME = "some-table-name"
AWS_REGION = "us-west-2"

# OAuth app stuff
OAUTH_CLIENT_ID = os.getenv('GITHUB_CLIENT_ID')
OAUTH_CLIENT_SECRET = os.getenv('GITHUB_CLIENT_SECRET')
OAUTH_ACCESS_TOKEN_URL = "https://github.com/login/oauth/access_token"
OAUTH_AUTHORIZE_URL = "https://github.com/login/oauth/authorize"
OAUTH_USER_INFO_URL = "https://api.github.com/user"
OAUTH_SCOPE = "user:email"

# optional OAuth stuff
OAUTH_INCLUDE_SCOPE_IN_REFRESH = True  # defaults to False, shouldn't be common
OAUTH_ACCESS_TOKEN_KWARGS = {
    "client_id": OAUTH_CLIENT_ID,
    "client_secret": OAUTH_CLIENT_SECRET
}  # passed when trying to obtain the token

# if the state should be passed again to the provider in the POST to obtain the token
# (this is not typical, and should be False in 99% of cases)
OAUTH_STATE_PROVIDER_CHECK = False

urls

Register the following urls in your root url conf

# urls.py
from django.urls import include, path

urlpatterns = [
    # ...
    path("oauth/", include("django_serverless_oauth_session.urls")),
]

The callback url will be the above, appended with callback, e.g., http://localhost:8000/oauth/callback

Support for custom URL callbacks will be worked on in a future version.

Getting the token

Somewhere in your site, you'll need a view with a button with which users can click to get started. Put this in your template to kick off the OAuth process.

<a href="{% url 'sls-login' %}" class="btn btn-primary">Click to OAuth</a>

Using it!

After all that set-up, you probably want to use it. The above enables to you grab an authenticated requests session that handles authenticated and token refreshing for you.

from django_serverless_oauth_session import get_oauth_session

def repos(request):
    session = get_oauth_session()
    response = session.get("https://api.github.com/user/repos")
    repos = response.json()
    return render(request, "repos.html", {"repos": repos})

This allows you to simply import this function and start making calls to your API in backend scripts and the like.

Please refer to the documentation for requests for more info on how to use the session.

Keywords

django

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