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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 opnfv.utils.opnfv_logger as OPNFVLogger
import os
import time
import shutil
logger = OPNFVLogger.Logger('ovs_logger').getLogger()
class OVSLogger(object):
def __init__(self, basedir, ft_resdir):
self.ovs_dir = basedir
self.ft_resdir = ft_resdir
self.__mkdir_p(self.ovs_dir)
self.__mkdir_p(self.ft_resdir)
def __mkdir_p(self, dirpath):
if not os.path.exists(dirpath):
os.makedirs(dirpath)
def __ssh_host(self, ssh_conn, host_prefix='10.20.0'):
try:
_, stdout, _ = ssh_conn.exec_command('hostname -I')
hosts = stdout.readline().strip().split(' ')
found_host = [h for h in hosts if h.startswith(host_prefix)][0]
return found_host
except Exception as e:
logger.error(e)
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 as e:
logger.error('[__remote_command(ssh_client, {0})]: {1}'
.format(cmd, e))
return None
def create_artifact_archive(self):
shutil.make_archive(self.ovs_dir,
'zip',
root_dir=os.path.dirname(self.ovs_dir),
base_dir=self.ovs_dir)
shutil.copy2('{0}.zip'.format(self.ovs_dir), self.ft_resdir)
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 as 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 as e:
logger.error('[vsctl_show(ssh_client)]: {0}'.format(e))
return None
def dump_ovs_logs(self, controller_clients, compute_clients,
related_error=None, timestamp=None):
if timestamp is None:
timestamp = time.strftime("%Y%m%d-%H%M%S")
clients = controller_clients + compute_clients
for client in clients:
self.ofctl_dump_flows(client, timestamp=timestamp)
self.vsctl_show(client, timestamp=timestamp)
if related_error is not None:
dumpdir = os.path.join(self.ovs_dir, timestamp)
self.__mkdir_p(dumpdir)
with open(os.path.join(dumpdir, 'error'), 'w') as f:
f.write(related_error)
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