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# Miro - an RSS based video player application
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# Copyright (C) 2005-2010 Participatory Culture Foundation
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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# In addition, as a special exception, the copyright holders give
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# permission to link the code of portions of this program with the OpenSSL
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# You must obey the GNU General Public License in all respects for all of
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# the code used other than OpenSSL. If you modify file(s) with this
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# exception, you may extend this exception to your version of the file(s),
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# but you are not obligated to do so. If you do not wish to do so, delete
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# this exception statement from your version. If you delete this exception
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# statement from all source files in the program, then also delete it here.
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"""Log events having to do with the database.
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The purpose of this module is to help us keep track of the history of
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a user's database. This helps us doing customer support and debugging
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weird databases because we have a better idea of the history of that
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See bug #12419 for more info.
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We should try hard not to let loops fill up the log file with too
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much junk, or infinitely. Take a look at
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``item.move_orphaned_items()`` for one technique to avoid this.
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from miro.database import DDBObject
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class DBLogEntry(DDBObject):
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def setup_new(self, priority, description):
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self.priority = priority
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self.description = description
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self.timestamp = time.time()
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def notable_entries(cls):
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return cls.make_view('priority > ?', (DEBUG,), order_by='timestamp')
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def _log(priority, message, *args):
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description = unicode(message) % args
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logging.warn("Unicode error when creating database log entry %s %s" % \
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entry = DBLogEntry(priority, description)
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logging.dblog(description)
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def info(message, *args):
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"""Log a message to the database, using the 'info' priority.
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This should be used for entries that are fairly notable. These
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entries will be printed out every time the user starts up Miro.
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_log(INFO, message, *args)
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def debug(message, *args):
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"""Log a message to the database, using the 'debug' priority.
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This should be used for entries that are there for debugging
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purposes. These will be only printed out to the current log file.
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_log(DEBUG, message, *args)
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def print_old_log_entries():
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"""Printout old log entries to the log file.
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old_entries = list(DBLogEntry.notable_entries())
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logging.dblog("start database log entries")
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for entry in old_entries:
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logging.dblog("* %s: %s", time.ctime(entry.timestamp),
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logging.dblog("end database log entries")