Python script to reverse MTurk rejection using boto library and M2Crypto

reverse_rejection.py

#!/usr/bin/env python

import sys

# We use M2Crypto here because MTurk API does not presently allow use of IAM keys, making SSL essential
# Adapted from script by Heikki Toivonen:
# http://www.heikkitoivonen.net/blog/2009/10/12/using-m2crypto-with-boto-secure-access-to-amazon-web-services/

from M2Crypto import httpslib, SSL
from boto.mturk.connection import MTurkConnection
 

AWS_ACCESS_KEY = "AWSKEYHERE"
AWS_SECRET_ACCESS_KEY = "SECRETKEYHERE"
REASON ="""
    Put reason for the reversal here
    """
ASSIGNMENT_ID = "ASSIGNMENT_ID_HERE_NOT_HIT_ID"

def https_connection_factory(host, port=None, strict=0, **ssl):
    """HTTPS connection factory that creates secure connections
    using M2Crypto."""
    ctx = SSL.Context('tlsv1')
    ctx.set_verify(SSL.verify_peer | SSL.verify_fail_if_no_peer_cert, depth=9)
    if ctx.load_verify_locations('cacert.pem') != 1:
        raise Exception('No CA certs')
    return httpslib.HTTPSConnection(host, port=port, strict=strict,
                                    ssl_context=ctx)
 
def create_connection(aws_access_key_id, aws_secret_access_key):
    """Create MTurk connection."""
    conn = MTurkConnection(aws_access_key_id=aws_access_key_id,
                         aws_secret_access_key=aws_secret_access_key,
                         https_connection_factory=(https_connection_factory, ()))
    return conn



if __name__ == '__main__':
    # Sample usage
 
    conn = create_connection(AWS_ACCESS_KEY, AWS_SECRET_ACCESS_KEY)
 
    try:
        conn.approve_rejected_assignment(ASSIGNMENT_ID, REASON)
    except EXCEPTION, e:
        print e