Clark Boylan
fba9b247bf
* doc/source/zuul.rst: Document SIGUSR2 behavior. * zuul/cmd/server.py: When SIGUSR2 is received log stack traces for all active running threads. This is useful for debugging deadlock situations. Note that this makes use of sys._current_frames which may not play nice with all implementations of Python. *tests/test_stack_dump.py: Test the stack dump signal handler with a new test file, class, and test method. * requirements.txt: Add argparse to requirements list so that py26 tests can pass when zuul.cmd.server is imported. Change-Id: I8ad8155b16f324e832c191f0a619ff89ef804a87
35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
# Copyright 2013 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import fixtures
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import logging
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import signal
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import testtools
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import zuul.cmd.server
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class TestStackDump(testtools.TestCase):
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def setUp(self):
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super(TestStackDump, self).setUp()
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self.log_fixture = self.useFixture(
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fixtures.FakeLogger(level=logging.DEBUG))
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def test_stack_dump_logs(self):
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"Test that stack dumps end up in logs."
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zuul.cmd.server.stack_dump_handler(signal.SIGUSR2, None)
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self.assertIn("Thread", self.log_fixture.output)
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self.assertIn("test_stack_dump_logs", self.log_fixture.output)
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