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# Copyright 2013: Mirantis Inc.
# All Rights Reserved.
#
# 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.
import configparser
import copy
import errno
import inspect
import json
import os
import shutil
import subprocess
import tempfile
from rally.utils import encodeutils
class RallyCliError(Exception):
def __init__(self, cmd, code, output):
self.command = cmd
self.code = code
self.output = encodeutils.safe_decode(output)
self.msg = "Command: %s Code: %d Output: %s\n" % (self.command,
self.code,
self.output)
def __str__(self):
return self.msg
class JsonTempFile(object):
def __init__(self, config):
config_file = tempfile.NamedTemporaryFile(delete=False)
config_file.write(encodeutils.safe_encode(json.dumps(config)))
config_file.close()
self.filename = config_file.name
def __del__(self):
os.unlink(self.filename)
class TaskConfig(JsonTempFile):
pass
class Rally(object):
"""Create and represent separate rally installation.
Usage:
rally = Rally()
rally("deployment", "create", "--name", "Some Deployment Name")
output = rally("deployment list")
"""
_DEPLOYMENT_CREATE_ARGS = ""
def __init__(self, force_new_db=False, plugin_path=None):
# NOTE(sskripnick): we should change home dir to avoid races
# and do not touch any user files in ~/.rally
self.tmp_dir = tempfile.mkdtemp()
self.env = copy.deepcopy(os.environ)
self.env["HOME"] = self.tmp_dir
self.config_filename = None
self.method_name = None
self.class_name = None
caller_frame = inspect.currentframe().f_back
if caller_frame.f_code.co_name == "__call__":
caller_frame = caller_frame.f_back
self.method_name = caller_frame.f_code.co_name
if self.method_name == "setUp":
raise Exception("No rally instance should be generated in "
"setUp method")
test_object = caller_frame.f_locals["self"]
self.class_name = test_object.__class__.__name__
if force_new_db or ("RCI_KEEP_DB" not in os.environ):
config_filename = os.path.join(self.tmp_dir, "conf")
config = configparser.RawConfigParser()
config.add_section("database")
config.set("database", "connection",
"sqlite:///%s/db" % self.tmp_dir)
with open(config_filename, "w") as conf:
config.write(conf)
self.args = ["rally", "--config-file", config_filename]
subprocess.call(["rally", "--config-file", config_filename,
"db", "recreate"], env=self.env)
self.config_filename = config_filename
else:
self.args = ["rally"]
subprocess.call(["rally", "db", "recreate"], env=self.env)
if plugin_path:
self.args.extend(["--plugin-paths", os.path.abspath(plugin_path)])
self.reports_root = os.environ.get("REPORTS_ROOT",
"rally-cli-output-files")
self._created_files = []
self("deployment create --name MAIN%s" % self._DEPLOYMENT_CREATE_ARGS,
write_report=False)
def __del__(self):
shutil.rmtree(self.tmp_dir)
def _safe_make_dirs(self, dirs):
try:
os.makedirs(dirs)
except OSError as exc:
if exc.errno == errno.EEXIST and os.path.isdir(dirs):
pass
else:
raise
def gen_report_path(self, suffix=None, extension=None, keep_old=False):
"""Report file path/name modifier
:param suffix: suffix that will be appended to filename.
It will be appended before extension
:param extension: file extension.
:param keep_old: if True, previous reports will not be deleted,
but rename to 'nameSuffix.old*.extension'
:return: complete report name to write report
"""
self._safe_make_dirs("%s/%s" % (self.reports_root, self.class_name))
suff = suffix or ""
ext = extension or "txt"
path = "%s/%s/%s%s.%s" % (self.reports_root, self.class_name,
self.method_name, suff, ext)
if path not in self._created_files:
if os.path.exists(path):
if not keep_old:
os.remove(path)
else:
path_list = path.split(".")
old_suff = "old"
path_list.insert(-1, old_suff)
new_path = ".".join(path_list)
count = 0
while os.path.exists(new_path):
count += 1
path_list[-2] = "old%d" % count
new_path = ".".join(path_list)
os.rename(path, new_path)
self._created_files.append(path)
return path
def __call__(self, cmd, getjson=False, report_path=None, raw=False,
suffix=None, extension=None, keep_old=False,
write_report=True, no_logs=False):
"""Call rally in the shell
:param cmd: rally command
:param getjson: in cases, when rally prints JSON, you can catch output
deserialized
:param report_path: if present, rally 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:
if no_logs or getjson:
cmd = self.args + ["--log-file", "/dev/null"] + cmd
with open(os.devnull, "w") as DEVNULL:
output = encodeutils.safe_decode(subprocess.check_output(
cmd, stderr=DEVNULL, env=self.env))
else:
cmd = self.args + cmd
output = encodeutils.safe_decode(subprocess.check_output(
cmd, stderr=subprocess.STDOUT, env=self.env))
if getjson:
return json.loads(output)
return output
except subprocess.CalledProcessError as e:
output = encodeutils.safe_decode(e.output)
raise RallyCliError(cmd, e.returncode, output) from None
finally:
if write_report:
if not report_path:
report_path = self.gen_report_path(
suffix=suffix, extension=extension, keep_old=keep_old)
with open(report_path, "a") as rep:
if not raw:
rep.write("\n%s:\n" % " ".join(cmd))
rep.write("%s\n" % output)
def get_global(global_key, env):
home_dir = env.get("HOME")
with open("%s/.rally/globals" % home_dir) as f:
for line in f.readlines():
if line.startswith("%s=" % global_key):
key, value = line.split("=")
return value.rstrip()
return ""
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