You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
415 lines
13 KiB
415 lines
13 KiB
#!/usr/bin/python2
|
|
|
|
# Copyright 2014 Google Inc.
|
|
#
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
"""Skia's Chromium Codereview Comparison Script.
|
|
|
|
This script takes two Codereview URLs, looks at the trybot results for
|
|
the two codereviews and compares the results.
|
|
|
|
Usage:
|
|
compare_codereview.py CONTROL_URL ROLL_URL
|
|
"""
|
|
|
|
import collections
|
|
import os
|
|
import re
|
|
import sys
|
|
import urllib2
|
|
import HTMLParser
|
|
|
|
|
|
class CodeReviewHTMLParser(HTMLParser.HTMLParser):
|
|
"""Parses CodeReview web page.
|
|
|
|
Use the CodeReviewHTMLParser.parse static function to make use of
|
|
this class.
|
|
|
|
This uses the HTMLParser class because it's the best thing in
|
|
Python's standard library. We need a little more power than a
|
|
regex. [Search for "You can't parse [X]HTML with regex." for more
|
|
information.
|
|
"""
|
|
# pylint: disable=I0011,R0904
|
|
@staticmethod
|
|
def parse(url):
|
|
"""Parses a CodeReview web pages.
|
|
|
|
Args:
|
|
url (string), a codereview URL like this:
|
|
'https://codereview.chromium.org/?????????'.
|
|
|
|
Returns:
|
|
A dictionary; the keys are bot_name strings, the values
|
|
are CodeReviewHTMLParser.Status objects
|
|
"""
|
|
parser = CodeReviewHTMLParser()
|
|
try:
|
|
parser.feed(urllib2.urlopen(url).read())
|
|
except (urllib2.URLError,):
|
|
print >> sys.stderr, 'Error getting', url
|
|
return None
|
|
parser.close()
|
|
return parser.statuses
|
|
|
|
# namedtuples are like lightweight structs in Python. The low
|
|
# overhead of a tuple, but the ease of use of an object.
|
|
Status = collections.namedtuple('Status', ['status', 'url'])
|
|
|
|
def __init__(self):
|
|
HTMLParser.HTMLParser.__init__(self)
|
|
self._id = None
|
|
self._status = None
|
|
self._href = None
|
|
self._anchor_data = ''
|
|
self._currently_parsing_trybotdiv = False
|
|
# statuses is a dictionary of CodeReviewHTMLParser.Status
|
|
self.statuses = {}
|
|
|
|
def handle_starttag(self, tag, attrs):
|
|
"""Overrides the HTMLParser method to implement functionality.
|
|
|
|
[[begin standard library documentation]]
|
|
This method is called to handle the start of a tag
|
|
(e.g. <div id="main">).
|
|
|
|
The tag argument is the name of the tag converted to lower
|
|
case. The attrs argument is a list of (name, value) pairs
|
|
containing the attributes found inside the tag's <>
|
|
brackets. The name will be translated to lower case, and
|
|
quotes in the value have been removed, and character and
|
|
entity references have been replaced.
|
|
|
|
For instance, for the tag <A HREF="http://www.cwi.nl/">, this
|
|
method would be called as handle_starttag('a', [('href',
|
|
'http://www.cwi.nl/')]).
|
|
[[end standard library documentation]]
|
|
"""
|
|
attrs = dict(attrs)
|
|
if tag == 'div':
|
|
# We are looking for <div id="tryjobdiv*">.
|
|
id_attr = attrs.get('id','')
|
|
if id_attr.startswith('tryjobdiv'):
|
|
self._id = id_attr
|
|
if (self._id and tag == 'a'
|
|
and 'build-result' in attrs.get('class', '').split()):
|
|
# If we are already inside a <div id="tryjobdiv*">, we
|
|
# look for a link if the form
|
|
# <a class="build-result" href="*">. Then we save the
|
|
# (non-standard) status attribute and the URL.
|
|
self._status = attrs.get('status')
|
|
self._href = attrs.get('href')
|
|
self._currently_parsing_trybotdiv = True
|
|
# Start saving anchor data.
|
|
|
|
def handle_data(self, data):
|
|
"""Overrides the HTMLParser method to implement functionality.
|
|
|
|
[[begin standard library documentation]]
|
|
This method is called to process arbitrary data (e.g. text
|
|
nodes and the content of <script>...</script> and
|
|
<style>...</style>).
|
|
[[end standard library documentation]]
|
|
"""
|
|
# Save the text inside the <a></a> tags. Assume <a> tags
|
|
# aren't nested.
|
|
if self._currently_parsing_trybotdiv:
|
|
self._anchor_data += data
|
|
|
|
def handle_endtag(self, tag):
|
|
"""Overrides the HTMLParser method to implement functionality.
|
|
|
|
[[begin standard library documentation]]
|
|
This method is called to handle the end tag of an element
|
|
(e.g. </div>). The tag argument is the name of the tag
|
|
converted to lower case.
|
|
[[end standard library documentation]]
|
|
"""
|
|
if tag == 'a' and self._status:
|
|
# We take the accumulated self._anchor_data and save it as
|
|
# the bot name.
|
|
bot = self._anchor_data.strip()
|
|
stat = CodeReviewHTMLParser.Status(status=self._status,
|
|
url=self._href)
|
|
if bot:
|
|
# Add to accumulating dictionary.
|
|
self.statuses[bot] = stat
|
|
# Reset state to search for the next bot.
|
|
self._currently_parsing_trybotdiv = False
|
|
self._anchor_data = ''
|
|
self._status = None
|
|
self._href = None
|
|
|
|
|
|
class BuilderHTMLParser(HTMLParser.HTMLParser):
|
|
"""parses Trybot web pages.
|
|
|
|
Use the BuilderHTMLParser.parse static function to make use of
|
|
this class.
|
|
|
|
This uses the HTMLParser class because it's the best thing in
|
|
Python's standard library. We need a little more power than a
|
|
regex. [Search for "You can't parse [X]HTML with regex." for more
|
|
information.
|
|
"""
|
|
# pylint: disable=I0011,R0904
|
|
@staticmethod
|
|
def parse(url):
|
|
"""Parses a Trybot web page.
|
|
|
|
Args:
|
|
url (string), a trybot result URL.
|
|
|
|
Returns:
|
|
An array of BuilderHTMLParser.Results, each a description
|
|
of failure results, along with an optional url
|
|
"""
|
|
parser = BuilderHTMLParser()
|
|
try:
|
|
parser.feed(urllib2.urlopen(url).read())
|
|
except (urllib2.URLError,):
|
|
print >> sys.stderr, 'Error getting', url
|
|
return []
|
|
parser.close()
|
|
return parser.failure_results
|
|
|
|
Result = collections.namedtuple('Result', ['text', 'url'])
|
|
|
|
def __init__(self):
|
|
HTMLParser.HTMLParser.__init__(self)
|
|
self.failure_results = []
|
|
self._current_failure_result = None
|
|
self._divlevel = None
|
|
self._li_level = 0
|
|
self._li_data = ''
|
|
self._current_failure = False
|
|
self._failure_results_url = ''
|
|
|
|
def handle_starttag(self, tag, attrs):
|
|
"""Overrides the HTMLParser method to implement functionality.
|
|
|
|
[[begin standard library documentation]]
|
|
This method is called to handle the start of a tag
|
|
(e.g. <div id="main">).
|
|
|
|
The tag argument is the name of the tag converted to lower
|
|
case. The attrs argument is a list of (name, value) pairs
|
|
containing the attributes found inside the tag's <>
|
|
brackets. The name will be translated to lower case, and
|
|
quotes in the value have been removed, and character and
|
|
entity references have been replaced.
|
|
|
|
For instance, for the tag <A HREF="http://www.cwi.nl/">, this
|
|
method would be called as handle_starttag('a', [('href',
|
|
'http://www.cwi.nl/')]).
|
|
[[end standard library documentation]]
|
|
"""
|
|
attrs = dict(attrs)
|
|
if tag == 'li':
|
|
# <li> tags can be nested. So we have to count the
|
|
# nest-level for backing out.
|
|
self._li_level += 1
|
|
return
|
|
if tag == 'div' and attrs.get('class') == 'failure result':
|
|
# We care about this sort of thing:
|
|
# <li>
|
|
# <li>
|
|
# <li>
|
|
# <div class="failure result">...</div>
|
|
# </li>
|
|
# </li>
|
|
# We want this text here.
|
|
# </li>
|
|
if self._li_level > 0:
|
|
self._current_failure = True # Tells us to keep text.
|
|
return
|
|
|
|
if tag == 'a' and self._current_failure:
|
|
href = attrs.get('href')
|
|
# Sometimes we want to keep the stdio url. We always
|
|
# return it, just in case.
|
|
if href.endswith('/logs/stdio'):
|
|
self._failure_results_url = href
|
|
|
|
def handle_data(self, data):
|
|
"""Overrides the HTMLParser method to implement functionality.
|
|
|
|
[[begin standard library documentation]]
|
|
This method is called to process arbitrary data (e.g. text
|
|
nodes and the content of <script>...</script> and
|
|
<style>...</style>).
|
|
[[end standard library documentation]]
|
|
"""
|
|
if self._current_failure:
|
|
self._li_data += data
|
|
|
|
def handle_endtag(self, tag):
|
|
"""Overrides the HTMLParser method to implement functionality.
|
|
|
|
[[begin standard library documentation]]
|
|
This method is called to handle the end tag of an element
|
|
(e.g. </div>). The tag argument is the name of the tag
|
|
converted to lower case.
|
|
[[end standard library documentation]]
|
|
"""
|
|
if tag == 'li':
|
|
self._li_level -= 1
|
|
if 0 == self._li_level:
|
|
if self._current_failure:
|
|
result = self._li_data.strip()
|
|
first = result.split()[0]
|
|
if first:
|
|
result = re.sub(
|
|
r'^%s(\s+%s)+' % (first, first), first, result)
|
|
# Sometimes, it repeats the same thing
|
|
# multiple times.
|
|
result = re.sub(r'unexpected flaky.*', '', result)
|
|
# Remove some extra unnecessary text.
|
|
result = re.sub(r'\bpreamble\b', '', result)
|
|
result = re.sub(r'\bstdio\b', '', result)
|
|
url = self._failure_results_url
|
|
self.failure_results.append(
|
|
BuilderHTMLParser.Result(result, url))
|
|
self._current_failure_result = None
|
|
# Reset the state.
|
|
self._current_failure = False
|
|
self._li_data = ''
|
|
self._failure_results_url = ''
|
|
|
|
|
|
def printer(indent, string):
|
|
"""Print indented, wrapped text.
|
|
"""
|
|
def wrap_to(line, columns):
|
|
"""Wrap a line to the given number of columns, return a list
|
|
of strings.
|
|
"""
|
|
ret = []
|
|
nextline = ''
|
|
for word in line.split():
|
|
if nextline:
|
|
if len(nextline) + 1 + len(word) > columns:
|
|
ret.append(nextline)
|
|
nextline = word
|
|
else:
|
|
nextline += (' ' + word)
|
|
else:
|
|
nextline = word
|
|
if nextline:
|
|
ret.append(nextline)
|
|
return ret
|
|
out = sys.stdout
|
|
spacer = ' '
|
|
for line in string.split('\n'):
|
|
for i, wrapped_line in enumerate(wrap_to(line, 68 - (2 * indent))):
|
|
out.write(spacer * indent)
|
|
if i > 0:
|
|
out.write(spacer)
|
|
out.write(wrapped_line)
|
|
out.write('\n')
|
|
out.flush()
|
|
|
|
|
|
def main(control_url, roll_url, verbosity=1):
|
|
"""Compare two Codereview URLs
|
|
|
|
Args:
|
|
control_url, roll_url: (strings) URL of the format
|
|
https://codereview.chromium.org/?????????
|
|
|
|
verbosity: (int) verbose level. 0, 1, or 2.
|
|
"""
|
|
# pylint: disable=I0011,R0914,R0912
|
|
control = CodeReviewHTMLParser.parse(control_url)
|
|
roll = CodeReviewHTMLParser.parse(roll_url)
|
|
all_bots = set(control) & set(roll) # Set intersection.
|
|
if not all_bots:
|
|
print >> sys.stderr, (
|
|
'Error: control %s and roll %s have no common trybots.'
|
|
% (list(control), list(roll)))
|
|
return
|
|
|
|
control_name = '[control %s]' % control_url.split('/')[-1]
|
|
roll_name = '[roll %s]' % roll_url.split('/')[-1]
|
|
|
|
out = sys.stdout
|
|
|
|
for bot in sorted(all_bots):
|
|
if (roll[bot].status == 'success'):
|
|
if verbosity > 1:
|
|
printer(0, '==%s==' % bot)
|
|
printer(1, 'OK')
|
|
continue
|
|
|
|
if control[bot].status != 'failure' and roll[bot].status != 'failure':
|
|
continue
|
|
printer(0, '==%s==' % bot)
|
|
|
|
formatted_results = []
|
|
for (status, name, url) in [
|
|
(control[bot].status, control_name, control[bot].url),
|
|
( roll[bot].status, roll_name, roll[bot].url)]:
|
|
lines = []
|
|
if status == 'failure':
|
|
results = BuilderHTMLParser.parse(url)
|
|
for result in results:
|
|
formatted_result = re.sub(r'(\S*\.html) ', '\n__\g<1>\n', result.text)
|
|
# Strip runtimes.
|
|
formatted_result = re.sub(r'\(.*\)', '', formatted_result)
|
|
lines.append((2, formatted_result))
|
|
if ('compile' in result.text or '...and more' in result.text):
|
|
lines.append((3, re.sub('/[^/]*$', '/', url) + result.url))
|
|
formatted_results.append(lines)
|
|
|
|
identical = formatted_results[0] == formatted_results[1]
|
|
|
|
|
|
for (formatted_result, (status, name, url)) in zip(
|
|
formatted_results,
|
|
[(control[bot].status, control_name, control[bot].url),
|
|
(roll[bot].status, roll_name, roll[bot].url)]):
|
|
if status != 'failure' and not identical:
|
|
printer(1, name)
|
|
printer(2, status)
|
|
elif status == 'failure':
|
|
if identical:
|
|
printer(1, control_name + ' and ' + roll_name + ' failed identically')
|
|
else:
|
|
printer(1, name)
|
|
for (indent, line) in formatted_result:
|
|
printer(indent, line)
|
|
if identical:
|
|
break
|
|
out.write('\n')
|
|
|
|
if verbosity > 0:
|
|
# Print out summary of all of the bots.
|
|
out.write('%11s %11s %4s %s\n\n' %
|
|
('CONTROL', 'ROLL', 'DIFF', 'BOT'))
|
|
for bot in sorted(all_bots):
|
|
if roll[bot].status == 'success':
|
|
diff = ''
|
|
elif (control[bot].status == 'success' and
|
|
roll[bot].status == 'failure'):
|
|
diff = '!!!!'
|
|
elif ('pending' in control[bot].status or
|
|
'pending' in roll[bot].status):
|
|
diff = '....'
|
|
else:
|
|
diff = '****'
|
|
out.write('%11s %11s %4s %s\n' % (
|
|
control[bot].status, roll[bot].status, diff, bot))
|
|
out.write('\n')
|
|
out.flush()
|
|
|
|
if __name__ == '__main__':
|
|
if len(sys.argv) < 3:
|
|
print >> sys.stderr, __doc__
|
|
exit(1)
|
|
main(sys.argv[1], sys.argv[2],
|
|
int(os.environ.get('COMPARE_CODEREVIEW_VERBOSITY', 1)))
|
|
|