summaryrefslogtreecommitdiffstats
path: root/vnftest/onap/runners/sequence.py
blob: b34149504a3976773525e225b645b781b234cff1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
##############################################################################
# Copyright 2018 EuropeanSoftwareMarketingLtd.
# ===================================================================
#  Licensed under the ApacheLicense, Version2.0 (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
#
# 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
##############################################################################
# vnftest comment: this is a modified copy of
# rally/rally/benchmark/runners/sequence.py

"""A runner that every run changes a specified input value to the step.
The input value in the sequence is specified in a list in the input file.
"""

from __future__ import absolute_import

import logging
import multiprocessing
import time
import traceback

import os

from vnftest.onap.runners import base

LOG = logging.getLogger(__name__)


def _worker_process(queue, cls, method_name, step_cfg,
                    context_cfg, aborted, output_queue):

    sequence = 1

    runner_cfg = step_cfg['runner']

    interval = runner_cfg.get("interval", 1)
    arg_name = runner_cfg.get('step_option_name')
    sequence_values = runner_cfg.get('sequence')

    if 'options' not in step_cfg:
        step_cfg['options'] = {}

    options = step_cfg['options']

    runner_cfg['runner_id'] = os.getpid()

    LOG.info("worker START, sequence_values(%s, %s), class %s",
             arg_name, sequence_values, cls)

    step = cls(step_cfg, context_cfg)
    step.setup()
    method = getattr(step, method_name)

    sla_action = None
    if "sla" in step_cfg:
        sla_action = step_cfg["sla"].get("action", "assert")

    for value in sequence_values:
        options[arg_name] = value

        LOG.debug("runner=%(runner)s seq=%(sequence)s START",
                  {"runner": runner_cfg["runner_id"], "sequence": sequence})

        data = {}
        errors = ""

        try:
            result = method(data)
        except AssertionError as assertion:
            # SLA validation failed in step, determine what to do now
            if sla_action == "assert":
                raise
            elif sla_action == "monitor":
                LOG.warning("SLA validation failed: %s", assertion.args)
                errors = assertion.args
        except Exception as e:
            errors = traceback.format_exc()
            LOG.exception(e)
        else:
            if result:
                output_queue.put(result)

        time.sleep(interval)

        step_output = {
            'timestamp': time.time(),
            'sequence': sequence,
            'data': data,
            'errors': errors
        }

        queue.put(step_output)

        LOG.debug("runner=%(runner)s seq=%(sequence)s END",
                  {"runner": runner_cfg["runner_id"], "sequence": sequence})

        sequence += 1

        if (errors and sla_action is None) or aborted.is_set():
            break

    try:
        step.teardown()
    except Exception:
        # catch any exception in teardown and convert to simple exception
        # never pass exceptions back to multiprocessing, because some exceptions can
        # be unpicklable
        # https://bugs.python.org/issue9400
        LOG.exception("")
        raise SystemExit(1)
    LOG.info("worker END")
    LOG.debug("queue.qsize() = %s", queue.qsize())
    LOG.debug("output_queue.qsize() = %s", output_queue.qsize())


class SequenceRunner(base.Runner):
    """Run a step by changing an input value defined in a list

  Parameters
    interval - time to wait between each step invocation
        type:    int
        unit:    seconds
        default: 1 sec
    step_option_name - name of the option that is increased each invocation
        type:    string
        unit:    na
        default: none
    sequence - list of values which are executed in their respective steps
        type:    [int]
        unit:    na
        default: none
    """

    __execution_type__ = 'Sequence'

    def _run_step(self, cls, method, step_cfg, context_cfg):
        name = "{}-{}-{}".format(self.__execution_type__, step_cfg.get("type"), os.getpid())
        self.process = multiprocessing.Process(
            name=name,
            target=_worker_process,
            args=(self.result_queue, cls, method, step_cfg,
                  context_cfg, self.aborted, self.output_queue))
        self.process.start()