':returns: item_list - list of Redshift Policies.
:returns: exception_map - A dict where the keys are a tuple containing the
location of the exception and the value is the actual exception'

def slurp(self):

    self.prep_for_slurp()
    from security_monkey.common.sts_connect import connect
    item_list = []
    exception_map = {}
    for account in self.accounts:
        account_db = Account.query.filter((Account.name == account)).first()
        account_number = account_db.identifier
        for region in regions():
            app.logger.debug('Checking    {}/{}/{}'.format(self.index, account, region.name))
            try:
                redshift = connect(account, 'redshift', region=region)
                all_clusters = []
                marker = None
                while True:
                    response = self.wrap_aws_rate_limited_call(redshift.describe_clusters, marker=marker)
                    all_clusters.extend(response['DescribeClustersResponse']['DescribeClustersResult']['Clusters'])
                    if (response['DescribeClustersResponse']['DescribeClustersResult']['Marker'] is not None):
                        marker = response['DescribeClustersResponse']['DescribeClustersResult']['Marker']
                    else:
                        break
            except Exception as e:
                if (region.name not in TROUBLE_REGIONS):
                    exc = BotoConnectionIssue(str(e), 'redshift', account, region.name)
                    self.slurp_exception((self.index, account, region.name), exc, exception_map, source='{}-watcher'.format(self.index))
                continue
            app.logger.debug('Found    {}    {}'.format(len(all_clusters), Redshift.i_am_plural))
            for cluster in all_clusters:
                cluster_id = cluster['ClusterIdentifier']
                if self.check_ignore_list(cluster_id):
                    continue
                arn = 'arn:aws:redshift:{region}:{account_number}:cluster:{name}'.format(region=region.name, account_number=account_number, name=cluster_id)
                cluster['arn'] = arn
                item = RedshiftCluster(region=region.name, account=account, name=cluster_id, arn=arn, config=dict(cluster))
                item_list.append(item)
    return (item_list, exception_map)
