VirtualMailManager/Transport.py
author Pascal Volk <neverseen@users.sourceforge.net>
Wed, 11 Jun 2008 00:05:22 +0000
changeset 37 89f952b0f366
parent 34 6d74e20c5b3b
child 47 191d5a5adc4a
permissions -rw-r--r--
* 'install.sh' - removed verbose stuff - fixed (multilingual) man pages installation stuff * 'man/man1/vmm1' - moved vmm.1 to man/man1/vmm1 * 'man/man5/vmm.cfg.5' - moved vmm.cfg.5 to man/man5/vmm.cfg.5 * 'po/de.po' - updated * added to repository - 'man/de/man1/vmm.1' - 'man/de/man5/vmm.cfg.5'
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#!/usr/bin/env python
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# -*- coding: UTF-8 -*-
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# Copyright 2008 VEB IT
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# See COPYING for distribution information.
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# $Id$
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"""Virtual Mail Manager's Transport class to manage the transport for
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domains and accounts."""
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from constants.VERSION import VERSION
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__author__ = 'Pascal Volk <p.volk@veb-it.de>'
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__version__ = VERSION
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__revision__ = 'rev '+'$Rev$'.split()[1]
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__date__ = '$Date$'.split()[1]
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import gettext
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from Exceptions import VMMTransportException
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import constants.ERROR as ERR
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gettext.bindtextdomain('vmm', '/usr/local/share/locale')
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gettext.textdomain('vmm')
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_ = gettext.gettext
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class Transport:
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    """A wrapper class thats provide access to the transport table"""
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    def __init__(self, dbh, tid=None, transport=None):
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        """Creates a new Transport instance.
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        Either tid or transport must be specified.
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        Keyword arguments:
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        dbh -- a pyPgSQL.PgSQL.connection
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        tid -- the id of a transport (long)
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        transport -- the value of the transport (str)
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        """
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        self._dbh = dbh
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        if tid is None and transport is None:
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            raise VMMTransportException((
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                _('Either tid or transport must be specified.'),
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                ERR.TRANSPORT_INIT))
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        elif tid is not None:
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            try:
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                self.__id = long(tid)
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            except ValueError:
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                raise VMMTransportException((_('tid must be an int/long.'),
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                    ERR.TRANSPORT_INIT))
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            self._loadByID()
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        else:
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            self.__transport = transport
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            self._loadByName()
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    def _loadByID(self):
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        dbc = self._dbh.cursor()
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        dbc.execute('SELECT transport FROM transport WHERE tid = %s', self.__id)
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        result = dbc.fetchone()
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        dbc.close()
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        if result is not None:
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            self.__transport = result[0]
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        else:
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            raise VMMTransportException((_('Unknown tid specified.'),
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                ERR.UNKNOWN_TRANSPORT_ID))
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    def _loadByName(self):
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        dbc = self._dbh.cursor()
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        dbc.execute('SELECT tid FROM transport WHERE transport = %s',
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                self.__transport)
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        result = dbc.fetchone()
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        dbc.close()
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        if result is not None:
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            self.__id = result[0]
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        else:
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            self._save()
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    def _save(self):
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        dbc = self._dbh.cursor()
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        dbc.execute("SELECT nextval('transport_id')")
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        self.__id = dbc.fetchone()[0]
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        dbc.execute('INSERT INTO transport (tid, transport) VALUES (%s, %s)',
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                self.__id, self.__transport)
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        self._dbh.commit()
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        dbc.close()
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    def getID(self):
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        """Returns the unique ID of the transport."""
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        return self.__id
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    def getTransport(self):
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        """Returns the value of transport, ex: 'dovecot:'"""
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        return self.__transport