Merge "Adding auto generate scale-out support for correlated traffic"
[yardstick.git] / yardstick / benchmark / runners / iteration.py
1 # Copyright 2014: Mirantis Inc.
2 # All Rights Reserved.
3 #
4 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
5 #    not use this file except in compliance with the License. You may obtain
6 #    a copy of the License at
7 #
8 #         http://www.apache.org/licenses/LICENSE-2.0
9 #
10 #    Unless required by applicable law or agreed to in writing, software
11 #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 #    License for the specific language governing permissions and limitations
14 #    under the License.
15
16 # yardstick comment: this is a modified copy of
17 # rally/rally/benchmark/runners/constant.py
18
19 """A runner that runs a configurable number of times before it returns
20 """
21
22 from __future__ import absolute_import
23
24 import logging
25 import multiprocessing
26 import time
27 import traceback
28
29 import os
30
31 from yardstick.benchmark.runners import base
32
33 LOG = logging.getLogger(__name__)
34
35
36 QUEUE_PUT_TIMEOUT = 10
37
38
39 def _worker_process(queue, cls, method_name, scenario_cfg,
40                     context_cfg, aborted, output_queue):
41
42     sequence = 1
43
44     runner_cfg = scenario_cfg['runner']
45
46     interval = runner_cfg.get("interval", 1)
47     iterations = runner_cfg.get("iterations", 1)
48     run_step = runner_cfg.get("run_step", "setup,run,teardown")
49
50     delta = runner_cfg.get("delta", 2)
51     LOG.info("worker START, iterations %d times, class %s", iterations, cls)
52
53     runner_cfg['runner_id'] = os.getpid()
54
55     benchmark = cls(scenario_cfg, context_cfg)
56     if "setup" in run_step:
57         benchmark.setup()
58
59     method = getattr(benchmark, method_name)
60
61     sla_action = None
62     if "sla" in scenario_cfg:
63         sla_action = scenario_cfg["sla"].get("action", "assert")
64     if "run" in run_step:
65         while True:
66
67             LOG.debug("runner=%(runner)s seq=%(sequence)s START",
68                       {"runner": runner_cfg["runner_id"],
69                        "sequence": sequence})
70
71             data = {}
72             errors = ""
73
74             try:
75                 result = method(data)
76             except AssertionError as assertion:
77                 # SLA validation failed in scenario, determine what to do now
78                 if sla_action == "assert":
79                     raise
80                 elif sla_action == "monitor":
81                     LOG.warning("SLA validation failed: %s", assertion.args)
82                     errors = assertion.args
83                 elif sla_action == "rate-control":
84                     try:
85                         scenario_cfg['options']['rate']
86                     except KeyError:
87                         scenario_cfg.setdefault('options', {})
88                         scenario_cfg['options']['rate'] = 100
89
90                     scenario_cfg['options']['rate'] -= delta
91                     sequence = 1
92                     continue
93             except Exception:
94                 errors = traceback.format_exc()
95                 LOG.exception("")
96             else:
97                 if result:
98                     # add timeout for put so we don't block test
99                     # if we do timeout we don't care about dropping individual KPIs
100                     output_queue.put(result, True, QUEUE_PUT_TIMEOUT)
101
102             time.sleep(interval)
103
104             benchmark_output = {
105                 'timestamp': time.time(),
106                 'sequence': sequence,
107                 'data': data,
108                 'errors': errors
109             }
110
111             queue.put(benchmark_output, True, QUEUE_PUT_TIMEOUT)
112
113             LOG.debug("runner=%(runner)s seq=%(sequence)s END",
114                       {"runner": runner_cfg["runner_id"],
115                        "sequence": sequence})
116
117             sequence += 1
118
119             if (errors and sla_action is None) or \
120                     (sequence > iterations or aborted.is_set()):
121                 LOG.info("worker END")
122                 break
123     if "teardown" in run_step:
124         try:
125             benchmark.teardown()
126         except Exception:
127             # catch any exception in teardown and convert to simple exception
128             # never pass exceptions back to multiprocessing, because some exceptions can
129             # be unpicklable
130             # https://bugs.python.org/issue9400
131             LOG.exception("")
132             raise SystemExit(1)
133
134     LOG.debug("queue.qsize() = %s", queue.qsize())
135     LOG.debug("output_queue.qsize() = %s", output_queue.qsize())
136
137
138 class IterationRunner(base.Runner):
139     """Run a scenario for a configurable number of times
140
141 If the scenario ends before the time has elapsed, it will be started again.
142
143   Parameters
144     iterations - amount of times the scenario will be run for
145         type:    int
146         unit:    na
147         default: 1
148     interval - time to wait between each scenario invocation
149         type:    int
150         unit:    seconds
151         default: 1 sec
152     """
153     __execution_type__ = 'Iteration'
154
155     def _run_benchmark(self, cls, method, scenario_cfg, context_cfg):
156         name = "{}-{}-{}".format(self.__execution_type__, scenario_cfg.get("type"), os.getpid())
157         self.process = multiprocessing.Process(
158             name=name,
159             target=_worker_process,
160             args=(self.result_queue, cls, method, scenario_cfg,
161                   context_cfg, self.aborted, self.output_queue))
162         self.process.start()