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##############################################################################
# Copyright (c) 2015 Huawei Technologies Co.,Ltd and others.
#
# 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
##############################################################################
from __future__ import absolute_import
import copy
import os
import subprocess
from oslo_serialization import jsonutils
from oslo_utils import encodeutils
class Yardstick(object):
"""Create and represent separate yardstick installation.
Usage:
yardstick = yardstick()
output = yardstick("runner list")
"""
def __init__(self, fake=False):
self.args = ["yardstick"]
self.env = copy.deepcopy(os.environ)
def __del__(self):
pass
def __call__(self, cmd, getjson=False, report_path=None, raw=False,
suffix=None, extension=None, keep_old=False,
write_report=False):
"""Call yardstick in the shell
:param cmd: yardstick command
:param getjson: in cases, when yardstick prints JSON, you can catch
output deserialized
TO DO:
:param report_path: if present, yardstick command and its output will
be written to file with passed file name
:param raw: don't write command itself to report file. Only output
will be written
"""
if not isinstance(cmd, list):
cmd = cmd.split(" ")
try:
output = encodeutils.safe_decode(subprocess.check_output(
self.args + cmd, stderr=subprocess.STDOUT, env=self.env),
'utf-8')
if getjson:
return jsonutils.loads(output)
return output
except subprocess.CalledProcessError as e:
raise e
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