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# Copyright 2014 Huawei Technologies Co. Ltd
#
# 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.
"""Open Vswitch module."""
import logging
import re
from compass.hdsdiscovery import base
from compass.hdsdiscovery import utils
# Vendor_loader will load vendor instance by CLASS_NAME
CLASS_NAME = "OVSwitch"
class OVSwitch(base.BaseVendor):
"""Open Vswitch."""
def __init__(self):
self.__name = "Open vSwitch"
def is_this_vendor(self, sys_info, host=None, credential=None, **kwargs):
"""Determine if the hostname is accociated witH this vendor.
:param host: swtich's IP address
:param credential: credential to access switch
"""
result = sys_info
if host and credential:
if utils.is_valid_ssh_credential(credential):
user = credential['username']
pwd = credential['password']
else:
msg = ("[OVSwitch]The format of credential %r is not for SSH "
"or incorrect Keywords! " % credential)
logging.info(msg)
return False
cmd = "ovs-vsctl -V"
result = None
try:
result = utils.ssh_remote_execute(host, user, pwd, cmd)
logging.debug('%s result for %s is %s', cmd, host, result)
if not result:
return False
except Exception as exc:
logging.error("No vendor or connection failed to run %s", cmd)
logging.exception(exc)
return False
if isinstance(result, str):
result = [result]
for line in result:
if not line:
continue
if re.search(r"\b" + re.escape(self.__name) + r"\b", line):
return True
return False
@property
def name(self):
"""Open Vswitch name."""
return self.__name
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