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98 lines
3.8 KiB
Python
98 lines
3.8 KiB
Python
# Copyright (C) 2013 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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import logging
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_log = logging.getLogger(__name__)
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class DumpReader(object):
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"""Base class for breakpad dump readers."""
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def __init__(self, host, build_dir):
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self._host = host
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self._build_dir = build_dir
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def check_is_functional(self):
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"""This routine must be implemented by subclasses.
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Returns True if this reader is functional."""
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raise NotImplementedError()
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def crash_dumps_directory(self):
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return self._host.filesystem.join(self._build_dir, 'crash-dumps')
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def clobber_old_results(self):
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if self._host.filesystem.isdir(self.crash_dumps_directory()):
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self._host.filesystem.rmtree(self.crash_dumps_directory())
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def look_for_new_crash_logs(self, crashed_processes, start_time):
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if not crashed_processes:
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return None
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if not self.check_is_functional():
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return None
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pid_to_minidump = dict()
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for root, dirs, files in self._host.filesystem.walk(self.crash_dumps_directory()):
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for dmp in [f for f in files if f.endswith(self._file_extension())]:
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dmp_file = self._host.filesystem.join(root, dmp)
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if self._host.filesystem.mtime(dmp_file) < start_time:
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continue
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pid = self._get_pid_from_dump(dmp_file)
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if pid:
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pid_to_minidump[pid] = dmp_file
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result = dict()
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for test, process_name, pid in crashed_processes:
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if str(pid) in pid_to_minidump:
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stack = self._get_stack_from_dump(pid_to_minidump[str(pid)])
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if stack:
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result[test] = stack
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return result
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def _get_pid_from_dump(self, dump_file):
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"""This routine must be implemented by subclasses.
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This routine returns the PID of the crashed process that produced the given dump_file."""
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raise NotImplementedError()
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def _get_stack_from_dump(self, dump_file):
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"""This routine must be implemented by subclasses.
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Returns the stack stored in the given breakpad dump_file."""
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raise NotImplementedError()
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def _file_extension(self):
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"""This routine must be implemented by subclasses.
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Returns the file extension of crash dumps written by breakpad."""
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raise NotImplementedError()
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