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cronscripts/oops-prune.py
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#!/usr/bin/python -S
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#
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# Copyright 2009-2011 Canonical Ltd.  This software is licensed under the
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# GNU Affero General Public License version 3 (see the file LICENSE).
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# pylint: disable-msg=C0103,W0403
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"""Cronscript to prune old and unreferenced OOPS reports from the archive."""
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__metaclass__ = type
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import os
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import _pythonpath
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from canonical.config import config
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from canonical.launchpad.scripts.oops import (
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    prune_empty_oops_directories,
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    unwanted_oops_files,
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    )
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from lp.services.scripts.base import (
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    LaunchpadCronScript,
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    LaunchpadScriptFailure,
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    )
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default_lock_filename = '/var/lock/oops-prune.lock'
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class OOPSPruner(LaunchpadCronScript):
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    def add_my_options(self):
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        self.parser.add_option(
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                '-n', '--dry-run', default=False, action='store_true',
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                dest="dry_run", help="Do a test run. No files are removed."
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                )
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    def main(self):
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        # Default to using the OOPS directory in config file.
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        if not self.args:
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            self.args = [config.error_reports.error_dir]
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        oops_directories = []
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        for oops_dir in self.args:
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            if not os.path.isdir(oops_dir):
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                raise LaunchpadScriptFailure(
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                    "%s is not a directory" % oops_dir)
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            oops_directories.append(oops_dir)
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        for oops_directory in oops_directories:
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            for oops_path in unwanted_oops_files(oops_directory,
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                                                 40, self.logger):
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                self.logger.info("Removing %s", oops_path)
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                if not self.options.dry_run:
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                    os.unlink(oops_path)
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            prune_empty_oops_directories(oops_directory)
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if __name__ == '__main__':
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    script = OOPSPruner('oops-prune', dbuser='oopsprune')
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    script.lock_and_run(isolation='autocommit')