Upload image available at public URL to S3 using boto

Question

I\'m working in a Python web environment and I can simply upload a file from the filesystem to S3 using boto\'s key.set_contents_from_filename(path/to/file). However, I\'d l

Answer 1

A simple 3-lines implementation that works on a lambda out-of-the-box:

import boto3
import requests

s3_object = boto3.resource('s3').Object(bucket_name, object_key)

with requests.get(url, stream=True) as r:
    s3_object.put(Body=r.content)

The source for the .get part comes straight from the requests documentation

Answer 2

Unfortunately, there really isn't any way to do this. At least not at the moment. We could add a method to boto, say set_contents_from_url, but that method would still have to download the file to the local machine and then upload it. It might still be a convenient method but it wouldn't save you anything.

In order to do what you really want to do, we would need to have some capability on the S3 service itself that would allow us to pass it the URL and have it store the URL to a bucket for us. That sounds like a pretty useful feature. You might want to post that to the S3 forums.

Answer 3

import boto
from boto.s3.key import Key
from boto.s3.connection import OrdinaryCallingFormat
from urllib import urlopen


def upload_images_s3(img_url):
    try:
        connection = boto.connect_s3('access_key', 'secret_key', calling_format=OrdinaryCallingFormat())       
        bucket = connection.get_bucket('boto-demo-1519388451')
        file_obj = Key(bucket)
        file_obj.key = img_url.split('/')[::-1][0]
        fp = urlopen(img_url)
        result = file_obj.set_contents_from_string(fp.read())
    except Exception, e:
        return e