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ansible/hacking/shippable/incidental.py

466 lines
16 KiB
Python

#!/usr/bin/env python
# PYTHON_ARGCOMPLETE_OK
# (c) 2020 Red Hat, Inc.
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
"""CLI tool for reporting on incidental test coverage."""
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
# noinspection PyCompatibility
import argparse
import glob
import json
import os
import re
import subprocess
import sys
import hashlib
try:
# noinspection PyPackageRequirements
import argcomplete
except ImportError:
argcomplete = None
# Following changes should be made to improve the overall style:
# TODO use new style formatting method.
# TODO type hints.
# TODO pathlib.
def main():
"""Main program body."""
args = parse_args()
try:
incidental_report(args)
except ApplicationError as ex:
sys.exit(ex)
def parse_args():
"""Parse and return args."""
source = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
parser = argparse.ArgumentParser(description='Report on incidental test coverage downloaded from Shippable.')
parser.add_argument('result',
type=directory,
help='path to directory containing test results downloaded from Shippable')
parser.add_argument('--output',
type=optional_directory,
default=os.path.join(source, 'test', 'results', '.tmp', 'incidental'),
help='path to directory where reports should be written')
parser.add_argument('--source',
type=optional_directory,
default=source,
help='path to git repository containing Ansible source')
parser.add_argument('--skip-checks',
action='store_true',
help='skip integrity checks, use only for debugging')
parser.add_argument('--ignore-cache',
dest='use_cache',
action='store_false',
help='ignore cached files')
parser.add_argument('-v', '--verbose',
action='store_true',
help='increase verbosity')
targets = parser.add_mutually_exclusive_group()
targets.add_argument('--targets',
type=regex,
default='^incidental_',
help='regex for targets to analyze, default: %(default)s')
targets.add_argument('--plugin-path',
help='path to plugin to report incidental coverage on')
if argcomplete:
argcomplete.autocomplete(parser)
args = parser.parse_args()
return args
def optional_directory(value):
if not os.path.exists(value):
return value
return directory(value)
def directory(value):
if not os.path.isdir(value):
raise argparse.ArgumentTypeError('"%s" is not a directory' % value)
return value
def regex(value):
try:
return re.compile(value)
except Exception as ex:
raise argparse.ArgumentTypeError('"%s" is not a valid regex: %s' % (value, ex))
def incidental_report(args):
"""Generate incidental coverage report."""
ct = CoverageTool()
git = Git(os.path.abspath(args.source))
coverage_data = CoverageData(os.path.abspath(args.result))
try:
git.show([coverage_data.result_sha, '--'])
except subprocess.CalledProcessError:
raise ApplicationError('%s: commit not found: %s\n'
'make sure your source repository is up-to-date' % (git.path, coverage_data.result_sha))
if coverage_data.result != "succeeded":
check_failed(args, 'results indicate tests did not pass (result: %s)\n'
're-run until passing, then download the latest results and re-run the report using those results' % coverage_data.result)
if not coverage_data.paths:
raise ApplicationError('no coverage data found\n'
'make sure the downloaded results are from a code coverage run on Shippable')
# generate a unique subdirectory in the output directory based on the input files being used
path_hash = hashlib.sha256(b'\n'.join(p.encode() for p in coverage_data.paths)).hexdigest()
output_path = os.path.abspath(os.path.join(args.output, path_hash))
data_path = os.path.join(output_path, 'data')
reports_path = os.path.join(output_path, 'reports')
for path in [data_path, reports_path]:
if not os.path.exists(path):
os.makedirs(path)
# combine coverage results into a single file
combined_path = os.path.join(output_path, 'combined.json')
cached(combined_path, args.use_cache, args.verbose,
lambda: ct.combine(coverage_data.paths, combined_path))
with open(combined_path) as combined_file:
combined = json.load(combined_file)
if args.plugin_path:
# reporting on coverage missing from the test target for the specified plugin
# the report will be on a single target
cache_path_format = '%s' + '-for-%s' % os.path.splitext(os.path.basename(args.plugin_path))[0]
target_pattern = '^%s$' % get_target_name_from_plugin_path(args.plugin_path)
include_path = args.plugin_path
missing = True
target_name = get_target_name_from_plugin_path(args.plugin_path)
else:
# reporting on coverage exclusive to the matched targets
# the report can contain multiple targets
cache_path_format = '%s'
target_pattern = args.targets
include_path = None
missing = False
target_name = None
# identify integration test targets to analyze
target_names = sorted(combined['targets'])
incidental_target_names = [target for target in target_names if re.search(target_pattern, target)]
if not incidental_target_names:
if target_name:
# if the plugin has no tests we still want to know what coverage is missing
incidental_target_names = [target_name]
else:
raise ApplicationError('no targets to analyze')
# exclude test support plugins from analysis
# also exclude six, which for an unknown reason reports bogus coverage lines (indicating coverage of comments)
exclude_path = '^(test/support/|lib/ansible/module_utils/six/)'
# process coverage for each target and then generate a report
# save sources for generating a summary report at the end
summary = {}
report_paths = {}
for target_name in incidental_target_names:
cache_name = cache_path_format % target_name
only_target_path = os.path.join(data_path, 'only-%s.json' % cache_name)
cached(only_target_path, args.use_cache, args.verbose,
lambda: ct.filter(combined_path, only_target_path, include_targets=[target_name], include_path=include_path, exclude_path=exclude_path))
without_target_path = os.path.join(data_path, 'without-%s.json' % cache_name)
cached(without_target_path, args.use_cache, args.verbose,
lambda: ct.filter(combined_path, without_target_path, exclude_targets=[target_name], include_path=include_path, exclude_path=exclude_path))
if missing:
source_target_path = missing_target_path = os.path.join(data_path, 'missing-%s.json' % cache_name)
cached(missing_target_path, args.use_cache, args.verbose,
lambda: ct.missing(without_target_path, only_target_path, missing_target_path, only_gaps=True))
else:
source_target_path = exclusive_target_path = os.path.join(data_path, 'exclusive-%s.json' % cache_name)
cached(exclusive_target_path, args.use_cache, args.verbose,
lambda: ct.missing(only_target_path, without_target_path, exclusive_target_path, only_gaps=True))
source_expanded_target_path = os.path.join(os.path.dirname(source_target_path), 'expanded-%s' % os.path.basename(source_target_path))
cached(source_expanded_target_path, args.use_cache, args.verbose,
lambda: ct.expand(source_target_path, source_expanded_target_path))
summary[target_name] = sources = collect_sources(source_expanded_target_path, git, coverage_data)
txt_report_path = os.path.join(reports_path, '%s.txt' % cache_name)
cached(txt_report_path, args.use_cache, args.verbose,
lambda: generate_report(sources, txt_report_path, coverage_data, target_name, missing=missing))
report_paths[target_name] = txt_report_path
# provide a summary report of results
for target_name in incidental_target_names:
sources = summary[target_name]
report_path = os.path.relpath(report_paths[target_name])
print('%s: %d arcs, %d lines, %d files - %s' % (
target_name,
sum(len(s.covered_arcs) for s in sources),
sum(len(s.covered_lines) for s in sources),
len(sources),
report_path,
))
if not missing:
sys.stderr.write('NOTE: This report shows only coverage exclusive to the reported targets. '
'As targets are removed, exclusive coverage on the remaining targets will increase.\n')
def get_target_name_from_plugin_path(path): # type: (str) -> str
"""Return the integration test target name for the given plugin path."""
parts = os.path.splitext(path)[0].split(os.path.sep)
plugin_name = parts[-1]
if path.startswith('lib/ansible/modules/'):
plugin_type = None
elif path.startswith('lib/ansible/plugins/'):
plugin_type = parts[3]
elif path.startswith('lib/ansible/module_utils/'):
plugin_type = parts[2]
elif path.startswith('plugins/'):
plugin_type = parts[1]
else:
raise ApplicationError('Cannot determine plugin type from plugin path: %s' % path)
if plugin_type is None:
target_name = plugin_name
else:
target_name = '%s_%s' % (plugin_type, plugin_name)
return target_name
class CoverageData:
def __init__(self, result_path):
with open(os.path.join(result_path, 'run.json')) as run_file:
run = json.load(run_file)
self.result_sha = run["resources"]["repositories"]["self"]["version"]
self.result = run['result']
self.github_base_url = 'https://github.com/ansible/ansible/blob/%s/' % self.result_sha
# locate available results
self.paths = sorted(glob.glob(os.path.join(result_path, '*', 'coverage-analyze-targets.json')))
class Git:
def __init__(self, path):
self.git = 'git'
self.path = path
try:
self.show()
except subprocess.CalledProcessError:
raise ApplicationError('%s: not a git repository' % path)
def show(self, args=None):
return self.run(['show'] + (args or []))
def run(self, command):
return subprocess.check_output([self.git] + command, cwd=self.path)
class CoverageTool:
def __init__(self):
self.analyze_cmd = ['ansible-test', 'coverage', 'analyze', 'targets']
def combine(self, input_paths, output_path):
subprocess.check_call(self.analyze_cmd + ['combine'] + input_paths + [output_path])
def filter(self, input_path, output_path, include_targets=None, exclude_targets=None, include_path=None, exclude_path=None):
args = []
if include_targets:
for target in include_targets:
args.extend(['--include-target', target])
if exclude_targets:
for target in exclude_targets:
args.extend(['--exclude-target', target])
if include_path:
args.extend(['--include-path', include_path])
if exclude_path:
args.extend(['--exclude-path', exclude_path])
subprocess.check_call(self.analyze_cmd + ['filter', input_path, output_path] + args)
def missing(self, from_path, to_path, output_path, only_gaps=False):
args = []
if only_gaps:
args.append('--only-gaps')
subprocess.check_call(self.analyze_cmd + ['missing', from_path, to_path, output_path] + args)
def expand(self, input_path, output_path):
subprocess.check_call(self.analyze_cmd + ['expand', input_path, output_path])
class SourceFile:
def __init__(self, path, source, coverage_data, coverage_points):
self.path = path
self.lines = source.decode().splitlines()
self.coverage_data = coverage_data
self.coverage_points = coverage_points
self.github_url = coverage_data.github_base_url + path
is_arcs = ':' in dict(coverage_points).popitem()[0]
if is_arcs:
parse = parse_arc
else:
parse = int
self.covered_points = set(parse(v) for v in coverage_points)
self.covered_arcs = self.covered_points if is_arcs else None
self.covered_lines = set(abs(p[0]) for p in self.covered_points) | set(abs(p[1]) for p in self.covered_points)
def collect_sources(data_path, git, coverage_data):
with open(data_path) as data_file:
data = json.load(data_file)
sources = []
for path_coverage in data.values():
for path, path_data in path_coverage.items():
sources.append(SourceFile(path, git.show(['%s:%s' % (coverage_data.result_sha, path)]), coverage_data, path_data))
return sources
def generate_report(sources, report_path, coverage_data, target_name, missing):
output = [
'Target: %s (%s coverage)' % (target_name, 'missing' if missing else 'exclusive'),
'GitHub: %stest/integration/targets/%s' % (coverage_data.github_base_url, target_name),
]
for source in sources:
if source.covered_arcs:
output.extend([
'',
'Source: %s (%d arcs, %d/%d lines):' % (source.path, len(source.covered_arcs), len(source.covered_lines), len(source.lines)),
'GitHub: %s' % source.github_url,
'',
])
else:
output.extend([
'',
'Source: %s (%d/%d lines):' % (source.path, len(source.covered_lines), len(source.lines)),
'GitHub: %s' % source.github_url,
'',
])
last_line_no = 0
for line_no, line in enumerate(source.lines, start=1):
if line_no not in source.covered_lines:
continue
if last_line_no and last_line_no != line_no - 1:
output.append('')
notes = ''
if source.covered_arcs:
from_lines = sorted(p[0] for p in source.covered_points if abs(p[1]) == line_no)
to_lines = sorted(p[1] for p in source.covered_points if abs(p[0]) == line_no)
if from_lines:
notes += ' ### %s -> (here)' % ', '.join(str(from_line) for from_line in from_lines)
if to_lines:
notes += ' ### (here) -> %s' % ', '.join(str(to_line) for to_line in to_lines)
output.append('%4d %s%s' % (line_no, line, notes))
last_line_no = line_no
with open(report_path, 'w') as report_file:
report_file.write('\n'.join(output) + '\n')
def parse_arc(value):
return tuple(int(v) for v in value.split(':'))
def cached(path, use_cache, show_messages, func):
if os.path.exists(path) and use_cache:
if show_messages:
sys.stderr.write('%s: cached\n' % path)
sys.stderr.flush()
return
if show_messages:
sys.stderr.write('%s: generating ... ' % path)
sys.stderr.flush()
func()
if show_messages:
sys.stderr.write('done\n')
sys.stderr.flush()
def check_failed(args, message):
if args.skip_checks:
sys.stderr.write('WARNING: %s\n' % message)
return
raise ApplicationError(message)
class ApplicationError(Exception):
pass
if __name__ == '__main__':
main()