"""
awslimitchecker/services/autoscaling.py
The latest version of this package is available at:
<https://github.com/jantman/awslimitchecker>
################################################################################
Copyright 2015 Jason Antman <jason@jasonantman.com> <http://www.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 boto
import boto.ec2.autoscale
import logging
from .base import _AwsService
from ..limit import AwsLimit
from ..utils import boto_query_wrapper
logger = logging.getLogger(__name__)
[docs]class _AutoscalingService(_AwsService):
service_name = 'AutoScaling'
[docs] def connect(self):
"""Connect to API if not already connected; set self.conn."""
if self.conn is not None:
return
elif self.region:
self.conn = self.connect_via(boto.ec2.autoscale.connect_to_region)
else:
self.conn = boto.connect_autoscale()
[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`.
"""
logger.debug("Checking usage for service %s", self.service_name)
self.connect()
for lim in self.limits.values():
lim._reset_usage()
self.limits['Auto Scaling groups']._add_current_usage(
len(
boto_query_wrapper(self.conn.get_all_groups)
),
aws_type='AWS::AutoScaling::AutoScalingGroup',
)
self.limits['Launch configurations']._add_current_usage(
len(
boto_query_wrapper(
self.conn.get_all_launch_configurations
)
),
aws_type='AWS::AutoScaling::LaunchConfiguration',
)
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 = {}
# autoscaleconnection.get_all_groups()
limits['Auto Scaling groups'] = AwsLimit(
'Auto Scaling groups',
self,
20,
self.warning_threshold,
self.critical_threshold,
limit_type='AWS::AutoScaling::AutoScalingGroup',
)
# autoscaleconnection.get_all_launch_configurations()
limits['Launch configurations'] = AwsLimit(
'Launch configurations',
self,
100,
self.warning_threshold,
self.critical_threshold,
limit_type='AWS::AutoScaling::LaunchConfiguration',
)
self.limits = limits
return limits
[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 [
'autoscaling:DescribeAccountLimits',
'autoscaling:DescribeAutoScalingGroups',
'autoscaling:DescribeLaunchConfigurations',
]
[docs] def _update_limits_from_api(self):
"""
Query EC2's DescribeAccountAttributes API action, and update limits
with the quotas returned. Updates ``self.limits``.
"""
self.connect()
logger.info("Querying EC2 DescribeAccountAttributes for limits")
lims = boto_query_wrapper(self.conn.get_account_limits)
self.limits['Auto Scaling groups']._set_api_limit(
lims.max_autoscaling_groups)
self.limits['Launch configurations']._set_api_limit(
lims.max_launch_configurations
)