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# Copyright (c) 2019 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Linux sysctl library."""
from resources.libraries.python.ssh import exec_cmd_no_error
__all__ = ["SysctlUtil"]
class SysctlUtil(object):
"""Class contains methods for getting or setting sysctl settings."""
@staticmethod
def get_sysctl_value(node, key):
"""Get sysctl key.
:param node: Node in the topology.
:param key: Key that will be set.
:type node: dict
:type key: str
"""
command = 'sysctl {key}'.format(key=key)
message = 'Node {host} failed to run: {command}'.\
format(host=node['host'], command=command)
exec_cmd_no_error(node, command, sudo=True, message=message)
@staticmethod
def set_sysctl_value(node, key, value):
"""Set sysctl key to specific value.
:param node: Node in the topology.
:param key: Key that will be set.
:param value: Value to set.
:type node: dict
:type key: str
:type value: str
"""
command = 'sysctl -w {key}={value}'.format(key=key, value=value)
message = 'Node {host} failed to run: {command}'.\
format(host=node['host'], command=command)
exec_cmd_no_error(node, command, sudo=True, message=message)
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