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##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
# Author: George Paraskevopoulos (geopar@intracom-telecom.com)
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
import functest.utils.functest_logger as rl
import os
import time
logger = rl.Logger('ovs_utils').getLogger()
class OVSLogger(object):
def __init__(self, basedir):
self.ovs_dir = os.path.join(basedir, 'odl-sfc/ovs')
self.__mkdir_p(self.ovs_dir)
def __mkdir_p(self, dirpath):
if not os.path.exists(dirpath):
os.makedirs(dirpath)
def __ssh_host(self, ssh_conn):
return ssh_conn.get_transport().getpeername()[0]
def __dump_to_file(self, operation, host, text, timestamp=None):
ts = (timestamp if timestamp is not None
else time.strftime("%Y%m%d-%H%M%S"))
dumpdir = os.path.join(self.ovs_dir, ts)
self.__mkdir_p(dumpdir)
fname = '{0}_{1}'.format(operation, host)
with open(os.path.join(dumpdir, fname), 'w') as f:
f.write(text)
def __remote_cmd(self, ssh_conn, cmd):
try:
_, stdout, stderr = ssh_conn.exec_command(cmd)
errors = stderr.readlines()
if len(errors) > 0:
host = self.__ssh_host(ssh_conn)
logger.error(''.join(errors))
raise Exception('Could not execute {0} in {1}'
.format(cmd, host))
output = ''.join(stdout.readlines())
return output
except Exception, e:
logger.error('[__remote_command(ssh_client, {0})]: {1}'
.format(cmd, e))
return None
def ofctl_dump_flows(self, ssh_conn, br='br-int',
choose_table=None, timestamp=None):
try:
cmd = 'ovs-ofctl -OOpenFlow13 dump-flows {0}'.format(br)
if choose_table is not None:
cmd = '{0} table={1}'.format(cmd, choose_table)
output = self.__remote_cmd(ssh_conn, cmd)
operation = 'ofctl_dump_flows'
host = self.__ssh_host(ssh_conn)
self.__dump_to_file(operation, host, output, timestamp=timestamp)
return output
except Exception, e:
logger.error('[ofctl_dump_flows(ssh_client, {0}, {1})]: {2}'
.format(br, choose_table, e))
return None
def vsctl_show(self, ssh_conn, timestamp=None):
try:
cmd = 'ovs-vsctl show'
output = self.__remote_cmd(ssh_conn, cmd)
operation = 'vsctl_show'
host = self.__ssh_host(ssh_conn)
self.__dump_to_file(operation, host, output, timestamp=timestamp)
return output
except Exception, e:
logger.error('[vsctl_show(ssh_client)]: {0}'.format(e))
return None
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