- 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:
- # config external_network based on env var
- if "networks" in cfg_attrs:
- for _, attrs in cfg_attrs["networks"].items():
- attrs["external_network"] = os.environ.get(
- 'EXTERNAL_NETWORK', 'net04_ext')
- 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