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authorPeter Mikus <pmikus@cisco.com>2019-02-06 16:15:58 +0000
committerPeter Mikus <pmikus@cisco.com>2019-02-08 14:55:39 +0000
commit390cb24b3945442fba9f84dc292b6a4138d4835e (patch)
tree406343768fd1e82097cd880c2752026e32b129c8 /resources/libraries/python/LimitUtil.py
parent7348bd7bf8eee50dbc2316ee9bae3ad0403522e9 (diff)
CSIT-845 Capture VPP core-dump from vpp crash on DUTs
Change-Id: I987dcd5092d8527c9aefbe093e1ed7ae144d191b Signed-off-by: Peter Mikus <pmikus@cisco.com>
Diffstat (limited to 'resources/libraries/python/LimitUtil.py')
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diff --git a/resources/libraries/python/LimitUtil.py b/resources/libraries/python/LimitUtil.py
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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 limit library."""
+
+from resources.libraries.python.ssh import exec_cmd_no_error
+
+__all__ = ["LimitUtil"]
+
+
+class LimitUtil(object):
+ """Class contains methods for getting or setting process resource limits."""
+
+ @staticmethod
+ def get_pid_limit(node, pid):
+ """Get process resource limits.
+
+ :param node: Node in the topology.
+ :param pid: Process ID.
+ :type node: dict
+ :type pid: int
+ """
+ command = 'prlimit --noheadings --pid={pid}'.format(pid=pid)
+
+ 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_pid_limit(node, pid, resource, limit):
+ """Set process resource limits.
+
+ :param node: Node in the topology.
+ :param pid: Process ID.
+ :param resource: Resource to set limits.
+ :param limit: Limit value.
+ :type node: dict
+ :type pid: int
+ :type resource: str
+ :type limit: str
+ """
+ command = 'prlimit --{resource}={limit} --pid={pid}'.format(
+ resource=resource, limit=limit, pid=pid)
+
+ message = 'Node {host} failed to run: {command}'.\
+ format(host=node['host'], command=command)
+
+ exec_cmd_no_error(node, command, sudo=True, message=message)
+