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##############################################################################
# Copyright (c) 2015 Ericsson AB 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
##############################################################################
""" Handler for yardstick command 'task' """
import sys
import os
import yaml
import atexit
import pkg_resources
import ipaddress
from yardstick.benchmark.context.model import Context
from yardstick.benchmark.runners import base as base_runner
from yardstick.common.task_template import TaskTemplate
from yardstick.common.utils import cliargs
output_file_default = "/tmp/yardstick.out"
class TaskCommands(object):
'''Task commands.
Set of commands to manage benchmark tasks.
'''
@cliargs("taskfile", type=str, help="path to taskfile", nargs=1)
@cliargs("--task-args", dest="task_args",
help="Input task args (dict in json). These args are used"
"to render input task that is jinja2 template.")
@cliargs("--task-args-file", dest="task_args_file",
help="Path to the file with input task args (dict in "
"json/yaml). These args are used to render input"
"task that is jinja2 template.")
@cliargs("--keep-deploy", help="keep context deployed in cloud",
action="store_true")
@cliargs("--parse-only", help="parse the benchmark config file and exit",
action="store_true")
@cliargs("--output-file", help="file where output is stored, default %s" %
output_file_default, default=output_file_default)
def do_start(self, args):
'''Start a benchmark scenario.'''
atexit.register(atexit_handler)
parser = TaskParser(args.taskfile[0])
scenarios, run_in_parallel = parser.parse(args.task_args,
args.task_args_file)
if args.parse_only:
sys.exit(0)
if os.path.isfile(args.output_file):
os.remove(args.output_file)
for context in Context.list:
context.deploy()
runners = []
if run_in_parallel:
for scenario in scenarios:
runner = run_one_scenario(scenario, args.output_file)
runners.append(runner)
# Wait for runners to finish
for runner in runners:
runner_join(runner)
print "Runner ended, output in", args.output_file
else:
# run serially
for scenario in scenarios:
runner = run_one_scenario(scenario, args.output_file)
runner_join(runner)
print "Runner ended, output in", args.output_file
if args.keep_deploy:
# keep deployment, forget about stack (hide it for exit handler)
Context.list = []
else:
for context in Context.list:
context.undeploy()
print "Done, exiting"
# TODO: Move stuff below into TaskCommands class !?
class TaskParser(object):
'''Parser for task config files in yaml format'''
def __init__(self, path):
self.path = path
def parse(self, task_args=None, task_args_file=None):
'''parses the task file and return an context and scenario instances'''
print "Parsing task config:", self.path
try:
kw = {}
if task_args_file:
with open(task_args_file) as f:
kw.update(parse_task_args("task_args_file", f.read()))
kw.update(parse_task_args("task_args", task_args))
except TypeError:
raise TypeError()
try:
with open(self.path) as f:
try:
input_task = f.read()
rendered_task = TaskTemplate.render(input_task, **kw)
except Exception as e:
print(("Failed to render template:\n%(task)s\n%(err)s\n")
% {"task": input_task, "err": e})
raise e
print(("Input task is:\n%s\n") % rendered_task)
cfg = yaml.load(rendered_task)
except IOError as ioerror:
sys.exit(ioerror)
if cfg["schema"] != "yardstick:task:0.1":
sys.exit("error: file %s has unknown schema %s" % (self.path,
cfg["schema"]))
# TODO: support one or many contexts? Many would simpler and precise
if "context" in cfg:
context_cfgs = [cfg["context"]]
else:
context_cfgs = cfg["contexts"]
for cfg_attrs in context_cfgs:
context = Context()
context.init(cfg_attrs)
run_in_parallel = cfg.get("run_in_parallel", False)
# TODO we need something better here, a class that represent the file
return cfg["scenarios"], run_in_parallel
def atexit_handler():
'''handler for process termination'''
base_runner.Runner.terminate_all()
if len(Context.list) > 0:
print "Undeploying all contexts"
for context in Context.list:
context.undeploy()
def is_ip_addr(addr):
'''check if string addr is an IP address'''
try:
ipaddress.ip_address(unicode(addr))
return True
except ValueError:
return False
def run_one_scenario(scenario_cfg, output_file):
'''run one scenario using context'''
key_filename = pkg_resources.resource_filename(
'yardstick.resources', 'files/yardstick_key')
host = Context.get_server(scenario_cfg["host"])
runner_cfg = scenario_cfg["runner"]
runner_cfg['host'] = host.public_ip
runner_cfg['user'] = host.context.user
runner_cfg['key_filename'] = key_filename
runner_cfg['output_filename'] = output_file
if "target" in scenario_cfg:
if is_ip_addr(scenario_cfg["target"]):
scenario_cfg["ipaddr"] = scenario_cfg["target"]
else:
target = Context.get_server(scenario_cfg["target"])
# get public IP for target server, some scenarios require it
if target.public_ip:
runner_cfg['target'] = target.public_ip
# TODO scenario_cfg["ipaddr"] is bad naming
if host.context != target.context:
# target is in another context, get its public IP
scenario_cfg["ipaddr"] = target.public_ip
else:
# target is in the same context, get its private IP
scenario_cfg["ipaddr"] = target.private_ip
runner = base_runner.Runner.get(runner_cfg)
print "Starting runner of type '%s'" % runner_cfg["type"]
runner.run(scenario_cfg["type"], scenario_cfg)
return runner
def runner_join(runner):
'''join (wait for) a runner, exit process at runner failure'''
status = runner.join()
base_runner.Runner.release(runner)
if status != 0:
sys.exit("Runner failed")
def print_invalid_header(source_name, args):
print(("Invalid %(source)s passed:\n\n %(args)s\n")
% {"source": source_name, "args": args})
def parse_task_args(src_name, args):
try:
kw = args and yaml.safe_load(args)
kw = {} if kw is None else kw
except yaml.parser.ParserError as e:
print_invalid_header(src_name, args)
print(("%(source)s has to be YAML. Details:\n\n%(err)s\n")
% {"source": src_name, "err": e})
raise TypeError()
if not isinstance(kw, dict):
print_invalid_header(src_name, args)
print(("%(src)s had to be dict, actually %(src_type)s\n")
% {"src": src_name, "src_type": type(kw)})
raise TypeError()
return kw
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