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Viewing changes to utils/expunge-cache.py

  • Committer: Package Import Robot
  • Author(s): Michael Vogt, Michael Vogt, Gary Lasker
  • Date: 2012-03-30 18:00:50 UTC
  • Revision ID: package-import@ubuntu.com-20120330180050-vuoqiczj131r9tgh
Tags: 5.1.14
https://launchpad.net/bugs/962580
https://launchpad.net/bugs/940482
https://launchpad.net/bugs/966514
https://launchpad.net/bugs/966879
https://launchpad.net/bugs/950899
https://launchpad.net/bugs/846204
https://launchpad.net/bugs/964433
https://launchpad.net/bugs/946393
https://launchpad.net/bugs/969050
https://launchpad.net/bugs/828887
https://launchpad.net/bugs/967036
https://launchpad.net/bugs/935930
[ Michael Vogt ]
* lp:~mvo/software-center/lp962580:
  - add locking to the expunge helper process to fix bugs that are triggered
    if multiple expunge cache processes are run (LP: #962580)
* lp:~mvo/software-center/cache-refresh-glitch:
  - ensure that we get a full refresh if a pkg was not available before
    show_app is called
* lp:~mvo/software-center/lp940482:
  - fix crash if the debfile does not return proper utf8 for the
    description (LP: #940482)
* lp:~mvo/software-center/lp966514:
  - properly handle network disconnect conditions with the Ubuntu
    SSO dialog (LP: #966514)
* lp:~mvo/software-center/lp966879:
  - fix for crashes in the installed view treeview (LP: #966879,
    LP: #950899)
* lp:~mvo/software-center/lp846204:
  - fix ValueError crashes in get_iter due to invalid tree paths
    (LP: #846204)
* lp:~mvo/software-center/lp964433:
  - disconnect the model from the view before calling set_from_matches
    (LP: #964433)
* lp:~mvo/software-center/treeview-keep-state-on-db-cache-change:
 - restore the state of the installed view treeview when the
   the db or cache changes, such as on an app install or remove
* lp:~mvo/software-center/946393:
 - fix installing multiple apps when in a custom list view (LP: #946393)
* lp:~mvo/software-center/lp969050:
 - disconnect the view when the model is cleared to avoid a furry of
   cursor_changed signals as the rows get removed (LP: #969050)

[ Gary Lasker ]
* lp:~gary-lasker/software-center/installed-pane-refresh:
  - avoid rebuilding the treeview in the installedpane if its not
    required (LP: #828887)
* lp:~gary-lasker/software-center/fix-crash-lp967036:
  - Small branch to fix a crash due to a UnicodeDecodeError when accessing 
    the short description for H/W requirements (LP: #967036)
* lp:~gary-lasker/software-center/fix-crash-lp935930:
  - fix a crash due to a UnicodeDecodeError (LP: #935930)

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utils/expunge-cache.py
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#!/usr/bin/python
 
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# Copyright (C) 2012 Canonical
 
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#
 
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# Authors:
 
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#  Michael Vogt
 
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#
 
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# This program is free software; you can redistribute it and/or modify it under
 
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# the terms of the GNU General Public License as published by the Free Software
 
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# Foundation; version 3.
 
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#
 
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# This program is distributed in the hope that it will be useful, but WITHOUT
 
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 
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# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 
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# details.
 
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#
 
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# You should have received a copy of the GNU General Public License along with
 
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# this program; if not, write to the Free Software Foundation, Inc.,
 
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""
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Expunge httplib2 caches
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import argparse
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import logging
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import os
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import time
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import sys
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class ExpungeCache(object):
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    def __init__(self, dirs, args):
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        self.dirs = dirs
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        # days to keep data in the cache (0 == disabled)
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        self.keep_time = 60 * 60 * 24 * args.by_days
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        self.keep_only_http200 = args.by_unsuccessful_http_states
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        self.dry_run = args.dry_run
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    def _rm(self, f):
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        if self.dry_run:
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            print "Would delete: %s" % f
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        else:
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            logging.debug("Deleting: %s" % f)
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            try:
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                os.unlink(f)
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            except OSError as e:
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                logging.warn("When expunging the cache, could not unlink "
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                             "file '%s' (%s)'" % (f, e))
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    def clean(self):
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        # go over the directories
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        now = time.time()
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        for d in self.dirs:
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            for root, dirs, files in os.walk(d):
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                for f in files:
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                    fullpath = os.path.join(root, f)
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                    header = open(fullpath).readline().strip()
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                    if not header.startswith("status:"):
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                        logging.debug(
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                            "Skipping files with unknown header: '%s'" % f)
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                        continue
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                    if self.keep_only_http200 and header != "status: 200":
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                        self._rm(fullpath)
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                    if self.keep_time:
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                        mtime = os.path.getmtime(fullpath)
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                        logging.debug("mtime of '%s': '%s" % (f, mtime))
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                        if (mtime + self.keep_time) < now:
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                            self._rm(fullpath)
 
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from softwarecenter.expunge import ExpungeCache
 
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if __name__ == "__main__":
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    parser = argparse.ArgumentParser(
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    os.nice(19)
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    # do it
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    cleaner = ExpungeCache(args.directories, args)
 
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    cleaner = ExpungeCache(args.directories, 
 
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                           args.by_days, 
 
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                           args.by_unsuccessful_http_states,
 
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                           args.dry_run)
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    cleaner.clean()