Django as S3 proxy

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小蘑菇
小蘑菇 2021-01-02 23:06

I extended a ModelAdmin with a custom field \"Download file\", which is a link to a URL in my Django project, like:

http://www.myproject.com/downloads/1


        
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  • 2021-01-02 23:37

    Rather than proxying, why not simply redirect?

    Use the django view at www.myproject.com/downloads/1 to serve a HTTP Redirect to the S3 storage URL - it's possible to generate time-limited authenticated URLs e.g. see here https://docs.aws.amazon.com/AmazonS3/latest/dev/ShareObjectPreSignedURL.html

    Then the client downloads the file directly from S3, but the contents is still secure and access has to come through your Django application

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  • 2021-01-02 23:43

    Yes, you can use Django as a proxy to stream your S3 files to the user.

    1. Generate a standard S3 url for your file.
    2. Use the requests library to fetch your file in streaming mode.
    3. Use Django to serve up the raw stream to the user.
    import requests, boto3
    from django.views.generic import View
    from django.http.response import HttpResponse
    
    class MediaDownloadView(View):
    
        def get(self, request, *args, **kwargs):
            s3 = boto3.resource(
                service_name='s3', aws_access_key_id='XXX_AWS_ACCESS_KEY_ID',
                aws_secret_access_key='XXX_AWS_ACCESS_KEY',
            )
            url = s3.meta.client.generate_presigned_url(
                ClientMethod="get_object", ExpiresIn=3600,
                Params={
                    "Bucket": 'XXX_BUCKET_NAME',
                    "Key": 'XXX_OBJECT_KEY',
                },
            )
            r = requests.get(url=url, stream=True)
            r.raise_for_status()
            response = HttpResponse(r.raw, content_type='audio/mp3')
            response['Content-Disposition'] = 'inline; filename=music.mp3'
            return response
    
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