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# Copyright (c) 2017 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.
"""Memif interface library."""
from resources.libraries.python.ssh import SSH
from resources.libraries.python.VatExecutor import VatExecutor, VatTerminal
class Memif(object):
"""Memif interface class."""
def __init__(self):
pass
@staticmethod
def create_memif_interface(node, socket, mid, role="master"):
"""Create Memif interface on the given node.
:param node: Given node to create Memif interface on.
:param socket: Memif interface socket path.
:param mid: Memif interface ID.
:param role: Memif interface role [master|slave]. Default is master.
:type node: dict
:type socket: str
:type mid: str
:type role: str
:returns: SW interface index.
:rtype: int
:raises ValueError: If command 'create memif' fails.
"""
with VatTerminal(node, json_param=False) as vat:
vat.vat_terminal_exec_cmd_from_template(
'memif_create.vat',
socket=socket, id=mid, role=role)
if 'sw_if_index' in vat.vat_stdout:
try:
return int(vat.vat_stdout.split()[4])
except KeyError:
raise ValueError('Create Memif interface failed on node '
'{}"'.format(node['host']))
else:
raise ValueError('Create Memif interface failed on node '
'{}"'.format(node['host']))
@staticmethod
def show_memif(node):
"""Show Memif data for the given node.
:param node: Given node to show Memif data on.
:type node: dict
"""
vat = VatExecutor()
vat.execute_script("memif_dump.vat", node, json_out=False)
@staticmethod
def clear_memif_socks(node, *socks):
"""Clear Memif sockets for the given node.
:param node: Given node to clear Memif sockets on.
:param socks: Memif sockets.
:type node: dict
:type socks: list
"""
ssh = SSH()
ssh.connect(node)
for sock in socks:
ssh.exec_command_sudo('rm -f {}'.format(sock))
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