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Viewing changes to Tools/Scripts/webkitpy/common/net/failuremap.py

  • Committer: Package Import Robot
  • Author(s): Jonathan Riddell
  • Date: 2013-02-18 14:24:18 UTC
  • Revision ID: package-import@ubuntu.com-20130218142418-eon0jmjg3nj438uy
Tags: upstream-2.3
Import upstream version 2.3

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Tools/Scripts/webkitpy/common/net/failuremap.py
 
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# Copyright (C) 2010 Google Inc. All rights reserved.
 
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#
 
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# Redistribution and use in source and binary forms, with or without
 
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# modification, are permitted provided that the following conditions are
 
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# met:
 
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#
 
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#     * Redistributions of source code must retain the above copyright
 
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# notice, this list of conditions and the following disclaimer.
 
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#     * Redistributions in binary form must reproduce the above
 
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# copyright notice, this list of conditions and the following disclaimer
 
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# in the documentation and/or other materials provided with the
 
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# distribution.
 
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#     * Neither the name of Google Inc. nor the names of its
 
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# contributors may be used to endorse or promote products derived from
 
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# this software without specific prior written permission.
 
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#
 
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
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# FIXME: This probably belongs in the buildbot module.
 
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class FailureMap(object):
 
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    def __init__(self):
 
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        self._failures = []
 
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    def add_regression_window(self, builder, regression_window):
 
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        self._failures.append({
 
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            'builder': builder,
 
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            'regression_window': regression_window,
 
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        })
 
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    def is_empty(self):
 
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        return not self._failures
 
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    def failing_revisions(self):
 
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        failing_revisions = [failure_info['regression_window'].revisions()
 
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                             for failure_info in self._failures]
 
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        return sorted(set(sum(failing_revisions, [])))
 
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    def builders_failing_for(self, revision):
 
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        return self._builders_failing_because_of([revision])
 
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    def tests_failing_for(self, revision):
 
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        tests = [failure_info['regression_window'].failing_tests()
 
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                 for failure_info in self._failures
 
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                 if revision in failure_info['regression_window'].revisions()
 
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                    and failure_info['regression_window'].failing_tests()]
 
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        result = set()
 
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        for test in tests:
 
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            result = result.union(test)
 
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        return sorted(result)
 
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    def failing_tests(self):
 
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        return set(sum([self.tests_failing_for(revision) for revision in self.failing_revisions()], []))
 
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    def _old_failures(self, is_old_failure):
 
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        return filter(lambda revision: is_old_failure(revision),
 
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                      self.failing_revisions())
 
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    def _builders_failing_because_of(self, revisions):
 
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        revision_set = set(revisions)
 
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        return [failure_info['builder'] for failure_info in self._failures
 
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                if revision_set.intersection(
 
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                    failure_info['regression_window'].revisions())]
 
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    # FIXME: We should re-process old failures after some time delay.
 
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    # https://bugs.webkit.org/show_bug.cgi?id=36581
 
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    def filter_out_old_failures(self, is_old_failure):
 
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        old_failures = self._old_failures(is_old_failure)
 
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        old_failing_builder_names = set([builder.name()
 
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            for builder in self._builders_failing_because_of(old_failures)])
 
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        # We filter out all the failing builders that could have been caused
 
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        # by old_failures.  We could miss some new failures this way, but
 
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        # emperically, this reduces the amount of spam we generate.
 
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        failures = self._failures
 
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        self._failures = [failure_info for failure_info in failures
 
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            if failure_info['builder'].name() not in old_failing_builder_names]
 
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        self._cache = {}