Source code for awslimitchecker.services.cloudformation

"""
awslimitchecker/services/cloudformation.py

The latest version of this package is available at:
<https://github.com/jantman/awslimitchecker>

################################################################################
Copyright 2015-2017 Jason Antman <jason@jasonantman.com>

    This file is part of awslimitchecker, also known as awslimitchecker.

    awslimitchecker is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    awslimitchecker is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with awslimitchecker.  If not, see <http://www.gnu.org/licenses/>.

The Copyright and Authors attributions contained herein may not be removed or
otherwise altered, except to add the Author attribution of a contributor to
this work. (Additional Terms pursuant to Section 7b of the AGPL v3)
################################################################################
While not legally required, I sincerely request that anyone who finds
bugs please submit them at <https://github.com/jantman/pydnstest> or
to me via email, and that you send any contributions or improvements
either as a pull request on GitHub, or to me via email.
################################################################################

AUTHORS:
Jason Antman <jason@jasonantman.com> <http://www.jasonantman.com>
################################################################################
"""

import abc  # noqa
import logging

from .base import _AwsService
from ..limit import AwsLimit

logger = logging.getLogger(__name__)


[docs]class _CloudformationService(_AwsService): service_name = 'CloudFormation' api_name = 'cloudformation' # AWS API name to connect to (boto3.client)
[docs] def find_usage(self): """ Determine the current usage for each limit of this service, and update corresponding Limit via :py:meth:`~.AwsLimit._add_current_usage`. """ ignore_statuses = [ 'DELETE_COMPLETE' ] logger.debug("Checking usage for service %s", self.service_name) self.connect() for lim in self.limits.values(): lim._reset_usage() count = 0 paginator = self.conn.get_paginator('describe_stacks') iter = paginator.paginate() for page in iter: for stk in page['Stacks']: if stk['StackStatus'] not in ignore_statuses: count += 1 self.limits['Stacks']._add_current_usage( count, aws_type='AWS::CloudFormation::Stack' ) self._have_usage = True logger.debug("Done checking usage.")
[docs] def get_limits(self): """ Return all known limits for this service, as a dict of their names to :py:class:`~.AwsLimit` objects. :returns: dict of limit names to :py:class:`~.AwsLimit` objects :rtype: dict """ if self.limits != {}: return self.limits limits = {} limits['Stacks'] = AwsLimit( 'Stacks', self, 200, self.warning_threshold, self.critical_threshold, limit_type='AWS::CloudFormation::Stack', ) self.limits = limits return limits
[docs] def _update_limits_from_api(self): """ Call the service's API action to retrieve limit/quota information, and update AwsLimit objects in ``self.limits`` with this information. """ logger.debug('Setting CloudFormation limits from API') self.connect() resp = self.conn.describe_account_limits() for lim in resp['AccountLimits']: if lim['Name'] == 'StackLimit': self.limits['Stacks']._set_api_limit(lim['Value']) continue logger.debug('API response contained unknown CloudFormation ' 'limit: %s', lim['Name'])
[docs] def required_iam_permissions(self): """ Return a list of IAM Actions required for this Service to function properly. All Actions will be shown with an Effect of "Allow" and a Resource of "*". :returns: list of IAM Action strings :rtype: list """ return [ 'cloudformation:DescribeAccountLimits', 'cloudformation:DescribeStacks' ]