Run Loop Run Loop - 4 years ago 212
Python Question

Using Cloudfront with Django S3Boto

I have successfully set up my app to use S3 for storing all static and media files. However, I would like to upload to S3 (current operation), but serve from a cloudfront instance I have set up. I have tried adjusting settings to the cloudfront url but it does not work. How can I upload to S3 and serve from Cloudfront please?

Settings

AWS_S3_CUSTOM_DOMAIN = '%s.s3.amazonaws.com' % AWS_STORAGE_BUCKET_NAME

DEFAULT_FILE_STORAGE = 'app.custom_storages.MediaStorage'
STATICFILES_STORAGE = 'app.custom_storages.StaticStorage'

STATICFILES_LOCATION = 'static'
MEDIAFILES_LOCATION = 'media'

STATIC_URL = "https://s3-eu-west-1.amazonaws.com/app/%s/" % (STATICFILES_LOCATION)
MEDIA_URL = "https://%s/%s/" % (AWS_S3_CUSTOM_DOMAIN, MEDIAFILES_LOCATION)


custom_storages.py

from django.conf import settings
from storages.backends.s3boto import S3BotoStorage

class StaticStorage(S3BotoStorage):
location = settings.STATICFILES_LOCATION

class MediaStorage(S3BotoStorage):
location = settings.MEDIAFILES_LOCATION

Answer Source

Your code is almost complete except you are not adding your cloudfront domain to STATIC_URL/MEDIA_URL and your custom storages.

In detail, you must first install the dependencies

pip install django-storages-redux boto

Add the required settings to your django settings file

INSTALLED_APPS = (
    ...
    'storages',
    ...
)

AWS_STORAGE_BUCKET_NAME = 'mybucketname'
AWS_CLOUDFRONT_DOMAIN = 'xxxxxxxx.cloudfront.net'
AWS_ACCESS_KEY_ID = get_secret("AWS_ACCESS_KEY_ID")
AWS_SECRET_ACCESS_KEY = get_secret("AWS_SECRET_ACCESS_KEY")

MEDIAFILES_LOCATION = 'media'
MEDIA_ROOT = '/%s/' % MEDIAFILES_LOCATION
MEDIA_URL = '//%s/%s/' % (AWS_CLOUDFRONT_DOMAIN, MEDIAFILES_LOCATION)
DEFAULT_FILE_STORAGE = 'app.custom_storages.MediaStorage'

STATICFILES_LOCATION = 'static'
STATIC_ROOT = '/%s/' % STATICFILES_LOCATION
STATIC_URL = '//%s/%s/' % (AWS_CLOUDFRONT_DOMAIN, STATICFILES_LOCATION)
STATICFILES_STORAGE = 'app.custom_storages.StaticStorage'

Your custom storages need some modification to present the cloudfront domain for the resources, instead of the S3 domain:

from django.conf import settings
from storages.backends.s3boto import S3BotoStorage

class StaticStorage(S3BotoStorage):
"""uploads to 'mybucket/static/', serves from 'cloudfront.net/static/'"""
    location = settings.STATICFILES_LOCATION

    def __init__(self, *args, **kwargs):
        kwargs['custom_domain'] = settings.AWS_CLOUDFRONT_DOMAIN
        super(StaticStorage, self).__init__(*args, **kwargs)

class MediaStorage(S3BotoStorage):
"""uploads to 'mybucket/media/', serves from 'cloudfront.net/media/'"""
    location = settings.MEDIAFILES_LOCATION

    def __init__(self, *args, **kwargs):
        kwargs['custom_domain'] = settings.AWS_CLOUDFRONT_DOMAIN
        super(MediaStorage, self).__init__(*args, **kwargs)

And that is all you need, assuming your bucket and cloudfront domain are correctly linked and the user's AWS_ACCESS_KEY has access permissions to your bucket. Additionally, based on your use case, you may wish to make your s3 bucket items read-only accessible by everyone.

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