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280ea8296f
skia2/gm/rebaseline_server/compare_to_expectations.py
commit-bot@chromium.org 280ea8296f rebaseline_server: multithreaded loading/diffing of images 
BUG=skia:2414
NOTRY=True
R=rmistry@google.com

Author: epoger@google.com

Review URL: https://codereview.chromium.org/235923002

git-svn-id: http://skia.googlecode.com/svn/trunk@14184 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-04-14 18:15:29 +00:00

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Python
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#!/usr/bin/python
"""
Copyright 2013 Google Inc.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
Repackage expected/actual GM results as needed by our HTML rebaseline viewer.
"""
# System-level imports
import argparse
import fnmatch
import json
import logging
import os
import re
import sys
import time
# Imports from within Skia
#
# TODO(epoger): Once we move the create_filepath_url() function out of
# download_actuals into a shared utility module, we won't need to import
# download_actuals anymore.
#
# We need to add the 'gm' directory, so that we can import gm_json.py within
# that directory. That script allows us to parse the actual-results.json file
# written out by the GM tool.
# Make sure that the 'gm' dir is in the PYTHONPATH, but add it at the *end*
# so any dirs that are already in the PYTHONPATH will be preferred.
PARENT_DIRECTORY = os.path.dirname(os.path.realpath(__file__))
GM_DIRECTORY = os.path.dirname(PARENT_DIRECTORY)
TRUNK_DIRECTORY = os.path.dirname(GM_DIRECTORY)
if GM_DIRECTORY not in sys.path:
sys.path.append(GM_DIRECTORY)
import download_actuals
import gm_json
import imagediffdb
import imagepair
import imagepairset
import results
EXPECTATION_FIELDS_PASSED_THRU_VERBATIM = [
results.KEY__EXPECTATIONS__BUGS,
results.KEY__EXPECTATIONS__IGNOREFAILURE,
results.KEY__EXPECTATIONS__REVIEWED,
]
DEFAULT_EXPECTATIONS_DIR = os.path.join(TRUNK_DIRECTORY, 'expectations', 'gm')
IMAGEPAIR_SET_DESCRIPTIONS = ('expected image', 'actual image')
class ExpectationComparisons(results.BaseComparisons):
"""Loads actual and expected GM results into an ImagePairSet.
Loads actual and expected results from all builders, except for those skipped
by _ignore_builder().
Once this object has been constructed, the results (in self._results[])
are immutable. If you want to update the results based on updated JSON
file contents, you will need to create a new ExpectationComparisons object."""
def __init__(self, actuals_root=results.DEFAULT_ACTUALS_DIR,
expected_root=DEFAULT_EXPECTATIONS_DIR,
generated_images_root=results.DEFAULT_GENERATED_IMAGES_ROOT,
diff_base_url=None, builder_regex_list=None):
"""
Args:
actuals_root: root directory containing all actual-results.json files
expected_root: root directory containing all expected-results.json files
generated_images_root: directory within which to create all pixel diffs;
if this directory does not yet exist, it will be created
diff_base_url: base URL within which the client should look for diff
images; if not specified, defaults to a "file:///" URL representation
of generated_images_root
builder_regex_list: List of regular expressions specifying which builders
we will process. If None, process all builders.
"""
time_start = int(time.time())
if builder_regex_list != None:
self.set_match_builders_pattern_list(builder_regex_list)
self._image_diff_db = imagediffdb.ImageDiffDB(generated_images_root)
self._diff_base_url = (
diff_base_url or
download_actuals.create_filepath_url(generated_images_root))
self._actuals_root = actuals_root
self._expected_root = expected_root
self._load_actual_and_expected()
self._timestamp = int(time.time())
logging.info('Number of download file collisions: %s' %
imagediffdb.global_file_collisions)
logging.info('Results complete; took %d seconds.' %
(self._timestamp - time_start))
def edit_expectations(self, modifications):
"""Edit the expectations stored within this object and write them back
to disk.
Note that this will NOT update the results stored in self._results[] ;
in order to see those updates, you must instantiate a new
ExpectationComparisons object based on the (now updated) files on disk.
Args:
modifications: a list of dictionaries, one for each expectation to update:
[
{
imagepair.KEY__EXPECTATIONS_DATA: {
results.KEY__EXPECTATIONS__BUGS: [123, 456],
results.KEY__EXPECTATIONS__IGNOREFAILURE: false,
results.KEY__EXPECTATIONS__REVIEWED: true,
},
imagepair.KEY__EXTRA_COLUMN_VALUES: {
results.KEY__EXTRACOLUMN__BUILDER: 'Test-Mac10.6-MacMini4.1-GeForce320M-x86-Debug',
results.KEY__EXTRACOLUMN__CONFIG: '8888',
results.KEY__EXTRACOLUMN__TEST: 'bigmatrix',
},
results.KEY__NEW_IMAGE_URL: 'bitmap-64bitMD5/bigmatrix/10894408024079689926.png',
},
...
]
"""
expected_builder_dicts = self._read_dicts_from_root(self._expected_root)
for mod in modifications:
image_name = results.IMAGE_FILENAME_FORMATTER % (
mod[imagepair.KEY__EXTRA_COLUMN_VALUES]
[results.KEY__EXTRACOLUMN__TEST],
mod[imagepair.KEY__EXTRA_COLUMN_VALUES]
[results.KEY__EXTRACOLUMN__CONFIG])
_, hash_type, hash_digest = gm_json.SplitGmRelativeUrl(
mod[results.KEY__NEW_IMAGE_URL])
allowed_digests = [[hash_type, int(hash_digest)]]
new_expectations = {
gm_json.JSONKEY_EXPECTEDRESULTS_ALLOWEDDIGESTS: allowed_digests,
}
for field in EXPECTATION_FIELDS_PASSED_THRU_VERBATIM:
value = mod[imagepair.KEY__EXPECTATIONS_DATA].get(field)
if value is not None:
new_expectations[field] = value
builder_dict = expected_builder_dicts[
mod[imagepair.KEY__EXTRA_COLUMN_VALUES]
[results.KEY__EXTRACOLUMN__BUILDER]]
builder_expectations = builder_dict.get(gm_json.JSONKEY_EXPECTEDRESULTS)
if not builder_expectations:
builder_expectations = {}
builder_dict[gm_json.JSONKEY_EXPECTEDRESULTS] = builder_expectations
builder_expectations[image_name] = new_expectations
ExpectationComparisons._write_dicts_to_root(
expected_builder_dicts, self._expected_root)
@staticmethod
def _write_dicts_to_root(meta_dict, root, pattern='*.json'):
"""Write all per-builder dictionaries within meta_dict to files under
the root path.
Security note: this will only write to files that already exist within
the root path (as found by os.walk() within root), so we don't need to
worry about malformed content writing to disk outside of root.
However, the data written to those files is not double-checked, so it
could contain poisonous data.
Args:
meta_dict: a builder-keyed meta-dictionary containing all the JSON
dictionaries we want to write out
root: path to root of directory tree within which to write files
pattern: which files to write within root (fnmatch-style pattern)
Raises:
IOError if root does not refer to an existing directory
KeyError if the set of per-builder dictionaries written out was
different than expected
"""
if not os.path.isdir(root):
raise IOError('no directory found at path %s' % root)
actual_builders_written = []
for dirpath, dirnames, filenames in os.walk(root):
for matching_filename in fnmatch.filter(filenames, pattern):
builder = os.path.basename(dirpath)
per_builder_dict = meta_dict.get(builder)
if per_builder_dict is not None:
fullpath = os.path.join(dirpath, matching_filename)
gm_json.WriteToFile(per_builder_dict, fullpath)
actual_builders_written.append(builder)
# Check: did we write out the set of per-builder dictionaries we
# expected to?
expected_builders_written = sorted(meta_dict.keys())
actual_builders_written.sort()
if expected_builders_written != actual_builders_written:
raise KeyError(
'expected to write dicts for builders %s, but actually wrote them '
'for builders %s' % (
expected_builders_written, actual_builders_written))
def _load_actual_and_expected(self):
"""Loads the results of all tests, across all builders (based on the
files within self._actuals_root and self._expected_root),
and stores them in self._results.
"""
logging.info('Reading actual-results JSON files from %s...' %
self._actuals_root)
actual_builder_dicts = self._read_dicts_from_root(self._actuals_root)
logging.info('Reading expected-results JSON files from %s...' %
self._expected_root)
expected_builder_dicts = self._read_dicts_from_root(self._expected_root)
all_image_pairs = imagepairset.ImagePairSet(
descriptions=IMAGEPAIR_SET_DESCRIPTIONS,
diff_base_url=self._diff_base_url)
failing_image_pairs = imagepairset.ImagePairSet(
descriptions=IMAGEPAIR_SET_DESCRIPTIONS,
diff_base_url=self._diff_base_url)
all_image_pairs.ensure_extra_column_values_in_summary(
column_id=results.KEY__EXTRACOLUMN__RESULT_TYPE, values=[
results.KEY__RESULT_TYPE__FAILED,
results.KEY__RESULT_TYPE__FAILUREIGNORED,
results.KEY__RESULT_TYPE__NOCOMPARISON,
results.KEY__RESULT_TYPE__SUCCEEDED,
])
failing_image_pairs.ensure_extra_column_values_in_summary(
column_id=results.KEY__EXTRACOLUMN__RESULT_TYPE, values=[
results.KEY__RESULT_TYPE__FAILED,
results.KEY__RESULT_TYPE__FAILUREIGNORED,
results.KEY__RESULT_TYPE__NOCOMPARISON,
])
builders = sorted(actual_builder_dicts.keys())
num_builders = len(builders)
builder_num = 0
for builder in builders:
builder_num += 1
logging.info('Generating pixel diffs for builder #%d of %d, "%s"...' %
(builder_num, num_builders, builder))
actual_results_for_this_builder = (
actual_builder_dicts[builder][gm_json.JSONKEY_ACTUALRESULTS])
for result_type in sorted(actual_results_for_this_builder.keys()):
results_of_this_type = actual_results_for_this_builder[result_type]
if not results_of_this_type:
continue
for image_name in sorted(results_of_this_type.keys()):
(test, config) = results.IMAGE_FILENAME_RE.match(image_name).groups()
actual_image_relative_url = (
ExpectationComparisons._create_relative_url(
hashtype_and_digest=results_of_this_type[image_name],
test_name=test))
# Default empty expectations; overwrite these if we find any real ones
expectations_per_test = None
expected_image_relative_url = None
expectations_dict = None
try:
expectations_per_test = (
expected_builder_dicts
[builder][gm_json.JSONKEY_EXPECTEDRESULTS][image_name])
# TODO(epoger): assumes a single allowed digest per test, which is
# fine; see https://code.google.com/p/skia/issues/detail?id=1787
expected_image_hashtype_and_digest = (
expectations_per_test
[gm_json.JSONKEY_EXPECTEDRESULTS_ALLOWEDDIGESTS][0])
expected_image_relative_url = (
ExpectationComparisons._create_relative_url(
hashtype_and_digest=expected_image_hashtype_and_digest,
test_name=test))
expectations_dict = {}
for field in EXPECTATION_FIELDS_PASSED_THRU_VERBATIM:
expectations_dict[field] = expectations_per_test.get(field)
except (KeyError, TypeError):
# There are several cases in which we would expect to find
# no expectations for a given test:
#
# 1. result_type == NOCOMPARISON
# There are no expectations for this test yet!
#
# 2. alternate rendering mode failures (e.g. serialized)
# In cases like
# https://code.google.com/p/skia/issues/detail?id=1684
# ('tileimagefilter GM test failing in serialized render mode'),
# the gm-actuals will list a failure for the alternate
# rendering mode even though we don't have explicit expectations
# for the test (the implicit expectation is that it must
# render the same in all rendering modes).
#
# Don't log type 1, because it is common.
# Log other types, because they are rare and we should know about
# them, but don't throw an exception, because we need to keep our
# tools working in the meanwhile!
if result_type != results.KEY__RESULT_TYPE__NOCOMPARISON:
logging.warning('No expectations found for test: %s' % {
results.KEY__EXTRACOLUMN__BUILDER: builder,
results.KEY__EXTRACOLUMN__RESULT_TYPE: result_type,
'image_name': image_name,
})
# If this test was recently rebaselined, it will remain in
# the 'failed' set of actuals until all the bots have
# cycled (although the expectations have indeed been set
# from the most recent actuals). Treat these as successes
# instead of failures.
#
# TODO(epoger): Do we need to do something similar in
# other cases, such as when we have recently marked a test
# as ignoreFailure but it still shows up in the 'failed'
# category? Maybe we should not rely on the result_type
# categories recorded within the gm_actuals AT ALL, and
# instead evaluate the result_type ourselves based on what
# we see in expectations vs actual checksum?
if expected_image_relative_url == actual_image_relative_url:
updated_result_type = results.KEY__RESULT_TYPE__SUCCEEDED
else:
updated_result_type = result_type
extra_columns_dict = {
results.KEY__EXTRACOLUMN__RESULT_TYPE: updated_result_type,
results.KEY__EXTRACOLUMN__BUILDER: builder,
results.KEY__EXTRACOLUMN__TEST: test,
results.KEY__EXTRACOLUMN__CONFIG: config,
}
try:
image_pair = imagepair.ImagePair(
image_diff_db=self._image_diff_db,
base_url=gm_json.GM_ACTUALS_ROOT_HTTP_URL,
imageA_relative_url=expected_image_relative_url,
imageB_relative_url=actual_image_relative_url,
expectations=expectations_dict,
extra_columns=extra_columns_dict)
all_image_pairs.add_image_pair(image_pair)
if updated_result_type != results.KEY__RESULT_TYPE__SUCCEEDED:
failing_image_pairs.add_image_pair(image_pair)
except Exception:
logging.exception('got exception while creating new ImagePair')
self._results = {
results.KEY__HEADER__RESULTS_ALL: all_image_pairs.as_dict(),
results.KEY__HEADER__RESULTS_FAILURES: failing_image_pairs.as_dict(),
}
def main():
logging.basicConfig(format='%(asctime)s %(levelname)s %(message)s',
datefmt='%m/%d/%Y %H:%M:%S',
level=logging.INFO)
parser = argparse.ArgumentParser()
parser.add_argument(
'--actuals', default=results.DEFAULT_ACTUALS_DIR,
help='Directory containing all actual-result JSON files; defaults to '
'\'%(default)s\' .')
parser.add_argument(
'--expectations', default=DEFAULT_EXPECTATIONS_DIR,
help='Directory containing all expected-result JSON files; defaults to '
'\'%(default)s\' .')
parser.add_argument(
'--outfile', required=True,
help='File to write result summary into, in JSON format.')
parser.add_argument(
'--results', default=results.KEY__HEADER__RESULTS_FAILURES,
help='Which result types to include. Defaults to \'%(default)s\'; '
'must be one of ' +
str([results.KEY__HEADER__RESULTS_FAILURES,
results.KEY__HEADER__RESULTS_ALL]))
parser.add_argument(
'--workdir', default=results.DEFAULT_GENERATED_IMAGES_ROOT,
help='Directory within which to download images and generate diffs; '
'defaults to \'%(default)s\' .')
args = parser.parse_args()
results_obj = ExpectationComparisons(actuals_root=args.actuals,
expected_root=args.expectations,
generated_images_root=args.workdir)
gm_json.WriteToFile(
results_obj.get_packaged_results_of_type(results_type=args.results),
args.outfile)
if __name__ == '__main__':
main()
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