'Returns the AWS object associated with a given option.
The heuristics used are a bit lame.  If the option name contains
the word \'bucket\' it is assumed to be an S3 bucket, if the name
contains the word \'queue\' it is assumed to be an SQS queue and
if it contains the word \'domain\' it is assumed to be a SimpleDB
domain.  If the option name specified does not exist in the
config file or if the AWS object cannot be retrieved this
returns None.'

def get_obj(self, name):

    val = self.get(name)
    if (not val):
        return None
    if (name.find('queue') >= 0):
        obj = boto.lookup('sqs', val)
        if obj:
            obj.set_message_class(ServiceMessage)
    elif (name.find('bucket') >= 0):
        obj = boto.lookup('s3', val)
    elif (name.find('domain') >= 0):
        obj = boto.lookup('sdb', val)
    else:
        obj = None
    return obj
