openstack/neutron-lbaas
Code Issues Proposed changes
4e934ada6b
neutron-lbaas/tools/subunit-trace.py
Russell Bryant 5f399868d8 Show progress output while running unit tests 
This patch imports some magic to enable showing test output as the
tests run.  Seeing output showing tests as they execute is reassuring
that the test run is continuing to make progress.  This originated in
tempest and was then brought over to Nova in this commit:

  https://review.openstack.org/#/c/121914/

Note the justification in that commit to just copy it instead of move
it to a shared repo.

To get the old behavior where you only get output when something
fails, you can set the TRACE_FAILONLY env var.  That originated in
this commit in Nova:

  https://review.openstack.org/#/c/123801/

Change-Id: I6a079ad5f630383650c0f9dee09e04250d0e2c5a
2014-11-20 21:05:32 +00:00

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#!/usr/bin/env python
# Copyright 2014 Hewlett-Packard Development Company, L.P.
# Copyright 2014 Samsung Electronics
# 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.
"""Trace a subunit stream in reasonable detail and high accuracy."""
import argparse
import functools
import os
import re
import sys
import mimeparse
import subunit
import testtools
DAY_SECONDS = 60 * 60 * 24
FAILS = []
RESULTS = {}
class Starts(testtools.StreamResult):
def __init__(self, output):
super(Starts, self).__init__()
self._output = output
def startTestRun(self):
self._neednewline = False
self._emitted = set()
def status(self, test_id=None, test_status=None, test_tags=None,
runnable=True, file_name=None, file_bytes=None, eof=False,
mime_type=None, route_code=None, timestamp=None):
super(Starts, self).status(
test_id, test_status,
test_tags=test_tags, runnable=runnable, file_name=file_name,
file_bytes=file_bytes, eof=eof, mime_type=mime_type,
route_code=route_code, timestamp=timestamp)
if not test_id:
if not file_bytes:
return
if not mime_type or mime_type == 'test/plain;charset=utf8':
mime_type = 'text/plain; charset=utf-8'
primary, sub, parameters = mimeparse.parse_mime_type(mime_type)
content_type = testtools.content_type.ContentType(
primary, sub, parameters)
content = testtools.content.Content(
content_type, lambda: [file_bytes])
text = content.as_text()
if text and text[-1] not in '\r\n':
self._neednewline = True
self._output.write(text)
elif test_status == 'inprogress' and test_id not in self._emitted:
if self._neednewline:
self._neednewline = False
self._output.write('\n')
worker = ''
for tag in test_tags or ():
if tag.startswith('worker-'):
worker = '(' + tag[7:] + ') '
if timestamp:
timestr = timestamp.isoformat()
else:
timestr = ''
self._output.write('%s: %s%s [start]\n' %
(timestr, worker, test_id))
self._emitted.add(test_id)
def cleanup_test_name(name, strip_tags=True, strip_scenarios=False):
"""Clean up the test name for display.
By default we strip out the tags in the test because they don't help us
in identifying the test that is run to it's result.
Make it possible to strip out the testscenarios information (not to
be confused with tempest scenarios) however that's often needed to
indentify generated negative tests.
"""
if strip_tags:
tags_start = name.find('[')
tags_end = name.find(']')
if tags_start > 0 and tags_end > tags_start:
newname = name[:tags_start]
newname += name[tags_end + 1:]
name = newname
if strip_scenarios:
tags_start = name.find('(')
tags_end = name.find(')')
if tags_start > 0 and tags_end > tags_start:
newname = name[:tags_start]
newname += name[tags_end + 1:]
name = newname
return name
def get_duration(timestamps):
start, end = timestamps
if not start or not end:
duration = ''
else:
delta = end - start
duration = '%d.%06ds' % (
delta.days * DAY_SECONDS + delta.seconds, delta.microseconds)
return duration
def find_worker(test):
for tag in test['tags']:
if tag.startswith('worker-'):
return int(tag[7:])
return 'NaN'
# Print out stdout/stderr if it exists, always
def print_attachments(stream, test, all_channels=False):
"""Print out subunit attachments.
Print out subunit attachments that contain content. This
runs in 2 modes, one for successes where we print out just stdout
and stderr, and an override that dumps all the attachments.
"""
channels = ('stdout', 'stderr')
for name, detail in test['details'].items():
# NOTE(sdague): the subunit names are a little crazy, and actually
# are in the form pythonlogging:'' (with the colon and quotes)
name = name.split(':')[0]
if detail.content_type.type == 'test':
detail.content_type.type = 'text'
if (all_channels or name in channels) and detail.as_text():
title = "Captured %s:" % name
stream.write("\n%s\n%s\n" % (title, ('~' * len(title))))
# indent attachment lines 4 spaces to make them visually
# offset
for line in detail.as_text().split('\n'):
stream.write(" %s\n" % line)
def show_outcome(stream, test, print_failures=False, failonly=False):
global RESULTS
status = test['status']
# TODO(sdague): ask lifeless why on this?
if status == 'exists':
return
worker = find_worker(test)
name = cleanup_test_name(test['id'])
duration = get_duration(test['timestamps'])
if worker not in RESULTS:
RESULTS[worker] = []
RESULTS[worker].append(test)
# don't count the end of the return code as a fail
if name == 'process-returncode':
return
if status == 'fail':
FAILS.append(test)
stream.write('{%s} %s [%s] ... FAILED\n' % (
worker, name, duration))
if not print_failures:
print_attachments(stream, test, all_channels=True)
elif not failonly:
if status == 'success':
stream.write('{%s} %s [%s] ... ok\n' % (
worker, name, duration))
print_attachments(stream, test)
elif status == 'skip':
stream.write('{%s} %s ... SKIPPED: %s\n' % (
worker, name, test['details']['reason'].as_text()))
else:
stream.write('{%s} %s [%s] ... %s\n' % (
worker, name, duration, test['status']))
if not print_failures:
print_attachments(stream, test, all_channels=True)
stream.flush()
def print_fails(stream):
"""Print summary failure report.
Currently unused, however there remains debate on inline vs. at end
reporting, so leave the utility function for later use.
"""
if not FAILS:
return
stream.write("\n==============================\n")
stream.write("Failed %s tests - output below:" % len(FAILS))
stream.write("\n==============================\n")
for f in FAILS:
stream.write("\n%s\n" % f['id'])
stream.write("%s\n" % ('-' * len(f['id'])))
print_attachments(stream, f, all_channels=True)
stream.write('\n')
def count_tests(key, value):
count = 0
for k, v in RESULTS.items():
for item in v:
if key in item:
if re.search(value, item[key]):
count += 1
return count
def run_time():
runtime = 0.0
for k, v in RESULTS.items():
for test in v:
runtime += float(get_duration(test['timestamps']).strip('s'))
return runtime
def worker_stats(worker):
tests = RESULTS[worker]
num_tests = len(tests)
delta = tests[-1]['timestamps'][1] - tests[0]['timestamps'][0]
return num_tests, delta
def print_summary(stream):
stream.write("\n======\nTotals\n======\n")
stream.write("Run: %s in %s sec.\n" % (count_tests('status', '.*'),
run_time()))
stream.write(" - Passed: %s\n" % count_tests('status', 'success'))
stream.write(" - Skipped: %s\n" % count_tests('status', 'skip'))
stream.write(" - Failed: %s\n" % count_tests('status', 'fail'))
# we could have no results, especially as we filter out the process-codes
if RESULTS:
stream.write("\n==============\nWorker Balance\n==============\n")
for w in range(max(RESULTS.keys()) + 1):
if w not in RESULTS:
stream.write(
" - WARNING: missing Worker %s! "
"Race in testr accounting.\n" % w)
else:
num, time = worker_stats(w)
stream.write(" - Worker %s (%s tests) => %ss\n" %
(w, num, time))
def parse_args():
parser = argparse.ArgumentParser()
parser.add_argument('--no-failure-debug', '-n', action='store_true',
dest='print_failures', help='Disable printing failure '
'debug information in realtime')
parser.add_argument('--fails', '-f', action='store_true',
dest='post_fails', help='Print failure debug '
'information after the stream is proccesed')
parser.add_argument('--failonly', action='store_true',
dest='failonly', help="Don't print success items",
default=(
os.environ.get('TRACE_FAILONLY', False)
is not False))
return parser.parse_args()
def main():
args = parse_args()
stream = subunit.ByteStreamToStreamResult(
sys.stdin, non_subunit_name='stdout')
starts = Starts(sys.stdout)
outcomes = testtools.StreamToDict(
functools.partial(show_outcome, sys.stdout,
print_failures=args.print_failures,
failonly=args.failonly
))
summary = testtools.StreamSummary()
result = testtools.CopyStreamResult([starts, outcomes, summary])
result.startTestRun()
try:
stream.run(result)
finally:
result.stopTestRun()
if count_tests('status', '.*') == 0:
print("The test run didn't actually run any tests")
return 1
if args.post_fails:
print_fails(sys.stdout)
print_summary(sys.stdout)
return (0 if summary.wasSuccessful() else 1)
if __name__ == '__main__':
sys.exit(main())
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