"""Amazon SQS connector."""

import boto3


def get_queue(queue_url, sqs_resource=None):
    """Get Amazon SQS queue.

    Args:
        queue_url (str): The Queue's url identifier.
        sqs_resource (boto3.resources.base.ServiceResource): SQS resource.
    Returns:
        Queue: Instance of Amazon SQS queue.
    """
    sqs = sqs_resource if sqs_resource else boto3.resource('sqs')
    if sqs is None:
        return None
    queue = sqs.Queue(queue_url)
    return queue