Using Amazon s3 boto library, how can I get the URL of a saved key?
PythonAmazon S3BotoPython Problem Overview
I am saving a key to a bucket with:
key = bucket.new_key(fileName)
key.set_contents_from_string(base64.b64decode(data))
key.set_metadata('Content-Type', 'image/jpeg')
key.set_acl('public-read')
After the save is successful, how can I access the URL of the newly created file?
Python Solutions
Solution 1 - Python
If the key is publicly readable (as shown above) you can use Key.generate_url:
url = key.generate_url(expires_in=0, query_auth=False)
If the key is private and you want to generate an expiring URL to share the content with someone who does not have direct access you could do:
url = key.generate_url(expires_in=300)
where expires is the number of seconds before the URL expires. These will produce HTTPS url's. If you prefer an HTTP url, use this:
url = key.generate_url(expires_in=0, query_auth=False, force_http=True)
Solution 2 - Python
For Boto3, you need to do it the following way...
import boto3
s3 = boto3.client('s3')
url = '{}/{}/{}'.format(s3.meta.endpoint_url, bucket, key)
Solution 3 - Python
import boto
from boto.s3.connection import S3Connection
conn = S3Connection('AWS_ACCESS_KEY', 'AWS_SECRET_KEY')
secure_https_url = 'https://{host}/{bucket}/{key}'.format(
host=conn.server_name(),
bucket='name-of-bucket',
key='name_of_key')
http_url = 'http://{bucket}.{host}/{key}'.format(
host=conn.server_name(),
bucket='name-of-bucket',
key='name_of_key')
That's how I did it in boto 2.23.0 for a public URL. I couldn't get the expires_in=None argument to work.
Note that for HTTPS you can't use a subdomain.