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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 Mac address module."""
import logging
from compass.hdsdiscovery import base
from compass.hdsdiscovery import utils
CLASS_NAME = "Mac"
class Mac(base.BasePlugin):
"""Open Vswitch MAC address module."""
def __init__(self, host, credential):
self.host = host
self.credential = credential
def process_data(self, oper="SCAN", **kwargs):
"""Dynamically call the function according 'oper'
:param oper: operation of data processing
"""
func_name = oper.lower()
return getattr(self, func_name)(**kwargs)
def scan(self, **kwargs):
"""Implemnets the scan method in BasePlugin class.
.. note::
In this module, mac addesses were retrieved by ssh.
"""
try:
user = self.credential['username']
pwd = self.credential['password']
except KeyError:
logging.error("Cannot find username and password in credential")
return None
cmd = ("BRIDGES=$(ovs-vsctl show |grep Bridge |cut -f 2 -d '\"');"
"for br in $BRIDGES; do"
"PORTS=$(ovs-ofctl show $br |grep addr |cut -f 1 -d ':' "
"|egrep -v 'eth|wlan|LOCAL'|awk -F '(' '{print $1}');"
"for port in $PORTS; do"
"RESULT=$(ovs-appctl fdb/show $br |"
"awk '$1 == '$port' {print $1" "$2" "$3}');"
"echo '$RESULT'"
"done;"
"done;")
output = None
try:
output = utils.ssh_remote_execute(self.host, user, pwd, cmd)
except Exception as error:
logging.exception(error)
return None
logging.debug("[scan][output] output is %s", output)
if not output:
return None
fields_arr = ['port', 'vlan', 'mac']
result = []
for line in output:
if not line or line == '\n':
continue
values_arr = line.split()
temp = {}
for field, value in zip(fields_arr, values_arr):
temp[field] = value
result.append(temp.copy())
return result
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