get_s3_temp_url.py

from argparse import ArgumentParser
from urlparse import urlparse
import boto

def get_temp_url(bucket, key, expires_in, upload):
    s3conn = boto.connect_s3()
    bucket = s3conn.get_bucket(bucket)
    key = bucket.get_key(key, validate=False)
    url = key.generate_url(expires_in, method='PUT' if upload else 'GET')
    return url

def main():
    parser = ArgumentParser()
    parser.add_argument('-e', '--expires_in', default=3600, type=int,
                        help='how long url is valid for in seconds')
    parser.add_argument('-u', '--upload', default=False,
                        action='store_true',
                        help='create url for uploading file (default is to create a url meant for downloading')
    parser.add_argument('s3url', help='location of object in url style (ex: s3://bucket-name/path/to/key)')
    ns = parser.parse_args()
    parseds3loc = urlparse(ns.s3url)
    bucket = parseds3loc.netloc
    key = parseds3loc.path

    tempurl = get_temp_url(bucket, key, ns.expires_in, ns.upload)
    print(tempurl)

if __name__ == '__main__':
    main()