[695] | 1 | # PyKota |
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[1144] | 2 | # -*- coding: ISO-8859-15 -*- |
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[695] | 3 | # |
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[952] | 4 | # PyKota : Print Quotas for CUPS and LPRng |
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[695] | 5 | # |
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| 6 | # (c) 2003 Jerome Alet <alet@librelogiciel.com> |
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[873] | 7 | # This program is free software; you can redistribute it and/or modify |
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| 8 | # it under the terms of the GNU General Public License as published by |
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| 9 | # the Free Software Foundation; either version 2 of the License, or |
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| 10 | # (at your option) any later version. |
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[695] | 11 | # |
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[873] | 12 | # This program is distributed in the hope that it will be useful, |
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| 13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | # GNU General Public License for more details. |
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| 16 | # |
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| 17 | # You should have received a copy of the GNU General Public License |
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| 18 | # along with this program; if not, write to the Free Software |
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| 19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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[695] | 20 | # |
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| 21 | # $Id$ |
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| 22 | # |
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| 23 | # $Log$ |
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[1200] | 24 | # Revision 1.26 2003/11/21 14:28:45 jalet |
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| 25 | # More complete job history. |
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| 26 | # |
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[1151] | 27 | # Revision 1.25 2003/10/08 21:12:27 jalet |
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| 28 | # Do not cache anymore entries which don't exist. |
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| 29 | # |
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[1148] | 30 | # Revision 1.24 2003/10/07 22:06:05 jalet |
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| 31 | # Preliminary code to disable job history |
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| 32 | # |
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[1144] | 33 | # Revision 1.23 2003/10/07 09:07:28 jalet |
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| 34 | # Character encoding added to please latest version of Python |
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| 35 | # |
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[1137] | 36 | # Revision 1.22 2003/10/06 13:12:27 jalet |
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| 37 | # More work on caching |
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| 38 | # |
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[1132] | 39 | # Revision 1.21 2003/10/03 09:02:20 jalet |
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| 40 | # Logs cache store actions too |
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| 41 | # |
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[1130] | 42 | # Revision 1.20 2003/10/02 20:23:18 jalet |
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| 43 | # Storage caching mechanism added. |
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| 44 | # |
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[1087] | 45 | # Revision 1.19 2003/07/16 21:53:07 jalet |
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| 46 | # Really big modifications wrt new configuration file's location and content. |
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| 47 | # |
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[1067] | 48 | # Revision 1.18 2003/07/07 08:33:18 jalet |
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| 49 | # Bug fix due to a typo in LDAP code |
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| 50 | # |
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[1062] | 51 | # Revision 1.17 2003/07/05 07:46:50 jalet |
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| 52 | # The previous bug fix was incomplete. |
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| 53 | # |
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[1043] | 54 | # Revision 1.16 2003/06/25 19:52:31 jalet |
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| 55 | # Should be ready for testing :-) |
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| 56 | # |
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[1042] | 57 | # Revision 1.15 2003/06/25 14:10:58 jalet |
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| 58 | # Exception raising for now. |
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| 59 | # |
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[1041] | 60 | # Revision 1.14 2003/06/25 14:10:01 jalet |
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| 61 | # Hey, it may work (edpykota --reset excepted) ! |
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| 62 | # |
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[1021] | 63 | # Revision 1.13 2003/06/10 16:37:54 jalet |
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| 64 | # Deletion of the second user which is not needed anymore. |
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| 65 | # Added a debug configuration field in /etc/pykota.conf |
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| 66 | # All queries can now be sent to the logger in debug mode, this will |
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| 67 | # greatly help improve performance when time for this will come. |
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| 68 | # |
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[952] | 69 | # Revision 1.12 2003/04/23 22:13:57 jalet |
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| 70 | # Preliminary support for LPRng added BUT STILL UNTESTED. |
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| 71 | # |
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[900] | 72 | # Revision 1.11 2003/04/10 21:47:20 jalet |
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| 73 | # Job history added. Upgrade script neutralized for now ! |
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| 74 | # |
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[873] | 75 | # Revision 1.10 2003/03/29 13:45:27 jalet |
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| 76 | # GPL paragraphs were incorrectly (from memory) copied into the sources. |
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| 77 | # Two README files were added. |
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| 78 | # Upgrade script for PostgreSQL pre 1.01 schema was added. |
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| 79 | # |
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[802] | 80 | # Revision 1.9 2003/02/17 22:55:01 jalet |
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| 81 | # More options can now be set per printer or globally : |
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| 82 | # |
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[873] | 83 | # admin |
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| 84 | # adminmail |
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| 85 | # gracedelay |
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| 86 | # requester |
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[802] | 87 | # |
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| 88 | # the printer option has priority when both are defined. |
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| 89 | # |
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[800] | 90 | # Revision 1.8 2003/02/17 22:05:50 jalet |
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| 91 | # Storage backend now supports admin and user passwords (untested) |
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| 92 | # |
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[791] | 93 | # Revision 1.7 2003/02/10 12:07:31 jalet |
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| 94 | # Now repykota should output the recorded total page number for each printer too. |
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| 95 | # |
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[773] | 96 | # Revision 1.6 2003/02/09 13:05:43 jalet |
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| 97 | # Internationalization continues... |
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| 98 | # |
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[768] | 99 | # Revision 1.5 2003/02/08 22:39:46 jalet |
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| 100 | # --reset command line option added |
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| 101 | # |
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[759] | 102 | # Revision 1.4 2003/02/08 09:59:59 jalet |
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| 103 | # Added preliminary base class for all storages |
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| 104 | # |
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[698] | 105 | # Revision 1.3 2003/02/05 22:10:29 jalet |
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| 106 | # Typos |
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| 107 | # |
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[697] | 108 | # Revision 1.2 2003/02/05 22:02:22 jalet |
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| 109 | # __import__ statement didn't work as expected |
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| 110 | # |
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[695] | 111 | # Revision 1.1 2003/02/05 21:28:17 jalet |
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| 112 | # Initial import into CVS |
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| 113 | # |
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| 114 | # |
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| 115 | # |
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| 116 | |
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| 117 | class PyKotaStorageError(Exception): |
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| 118 | """An exception for Quota Storage related stuff.""" |
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| 119 | def __init__(self, message = ""): |
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| 120 | self.message = message |
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| 121 | Exception.__init__(self, message) |
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| 122 | def __repr__(self): |
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| 123 | return self.message |
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| 124 | __str__ = __repr__ |
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[759] | 125 | |
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[1041] | 126 | class StorageObject : |
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| 127 | """Object present in the Quota Storage.""" |
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| 128 | def __init__(self, parent) : |
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| 129 | "Initialize minimal data.""" |
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| 130 | self.parent = parent |
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| 131 | self.ident = None |
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| 132 | self.Exists = 0 |
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| 133 | |
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| 134 | class StorageUser(StorageObject) : |
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| 135 | """User class.""" |
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| 136 | def __init__(self, parent, name) : |
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| 137 | StorageObject.__init__(self, parent) |
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| 138 | self.Name = name |
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| 139 | self.LimitBy = None |
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| 140 | self.AccountBalance = None |
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| 141 | self.LifeTimePaid = None |
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[1067] | 142 | self.Email = None |
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[1041] | 143 | |
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| 144 | def consumeAccountBalance(self, amount) : |
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| 145 | """Consumes an amount of money from the user's account balance.""" |
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| 146 | newbalance = float(self.AccountBalance or 0.0) - amount |
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| 147 | self.parent.writeUserAccountBalance(self, newbalance) |
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| 148 | self.AccountBalance = newbalance |
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| 149 | |
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| 150 | def setAccountBalance(self, balance, lifetimepaid) : |
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| 151 | """Sets the user's account balance in case he pays more money.""" |
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[1043] | 152 | self.parent.writeUserAccountBalance(self, balance, lifetimepaid) |
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| 153 | self.AccountBalance = balance |
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| 154 | self.LifeTimePaid = lifetimepaid |
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[1041] | 155 | |
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| 156 | def setLimitBy(self, limitby) : |
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| 157 | """Sets the user's limiting factor.""" |
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[1062] | 158 | try : |
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| 159 | limitby = limitby.lower() |
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| 160 | except AttributeError : |
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| 161 | limitby = "quota" |
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[1041] | 162 | if limitby in ["quota", "balance"] : |
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| 163 | self.parent.writeUserLimitBy(self, limitby) |
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| 164 | self.LimitBy = limitby |
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| 165 | |
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| 166 | def delete(self) : |
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| 167 | """Deletes an user from the Quota Storage.""" |
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| 168 | self.parent.beginTransaction() |
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| 169 | try : |
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| 170 | self.parent.deleteUser(self) |
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| 171 | except PyKotaStorageError, msg : |
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| 172 | self.parent.rollbackTransaction() |
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| 173 | raise PyKotaStorageError, msg |
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| 174 | else : |
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| 175 | self.parent.commitTransaction() |
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| 176 | |
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| 177 | class StorageGroup(StorageObject) : |
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| 178 | """User class.""" |
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| 179 | def __init__(self, parent, name) : |
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| 180 | StorageObject.__init__(self, parent) |
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| 181 | self.Name = name |
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| 182 | self.LimitBy = None |
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| 183 | self.AccountBalance = None |
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| 184 | self.LifeTimePaid = None |
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| 185 | |
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| 186 | def setLimitBy(self, limitby) : |
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| 187 | """Sets the user's limiting factor.""" |
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[1062] | 188 | try : |
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| 189 | limitby = limitby.lower() |
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| 190 | except AttributeError : |
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| 191 | limitby = "quota" |
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[1041] | 192 | if limitby in ["quota", "balance"] : |
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| 193 | self.parent.writeGroupLimitBy(self, limitby) |
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| 194 | self.LimitBy = limitby |
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| 195 | |
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| 196 | def delete(self) : |
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| 197 | """Deletes a group from the Quota Storage.""" |
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| 198 | self.parent.beginTransaction() |
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| 199 | try : |
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| 200 | self.parent.deleteGroup(self) |
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| 201 | except PyKotaStorageError, msg : |
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| 202 | self.parent.rollbackTransaction() |
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| 203 | raise PyKotaStorageError, msg |
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| 204 | else : |
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| 205 | self.parent.commitTransaction() |
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| 206 | |
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| 207 | class StoragePrinter(StorageObject) : |
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| 208 | """Printer class.""" |
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| 209 | def __init__(self, parent, name) : |
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| 210 | StorageObject.__init__(self, parent) |
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| 211 | self.Name = name |
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| 212 | self.PricePerPage = None |
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| 213 | self.PricePerJob = None |
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| 214 | self.LastJob = None |
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| 215 | |
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[1200] | 216 | def addJobToHistory(self, jobid, user, pagecounter, action, jobsize=None, filename=None, title=None, copies=None, options=None) : |
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[1041] | 217 | """Adds a job to the printer's history.""" |
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[1200] | 218 | self.parent.writeJobNew(self, user, jobid, pagecounter, action, jobsize, filename, title, copies, options) |
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[1041] | 219 | # TODO : update LastJob object ? Probably not needed. |
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| 220 | |
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| 221 | def setPrices(self, priceperpage = None, priceperjob = None) : |
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| 222 | """Sets the printer's prices.""" |
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| 223 | if priceperpage is None : |
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| 224 | priceperpage = self.PricePerPage |
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| 225 | else : |
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| 226 | self.PricePerPage = float(priceperpage) |
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| 227 | if priceperjob is None : |
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| 228 | priceperjob = self.PricePerJob |
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| 229 | else : |
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| 230 | self.PricePerJob = float(priceperjob) |
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| 231 | self.parent.writePrinterPrices(self) |
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| 232 | |
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| 233 | class StorageUserPQuota(StorageObject) : |
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| 234 | """User Print Quota class.""" |
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| 235 | def __init__(self, parent, user, printer) : |
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| 236 | StorageObject.__init__(self, parent) |
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| 237 | self.User = user |
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| 238 | self.Printer = printer |
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| 239 | self.PageCounter = None |
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| 240 | self.LifePageCounter = None |
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| 241 | self.SoftLimit = None |
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| 242 | self.HardLimit = None |
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| 243 | self.DateLimit = None |
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| 244 | |
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| 245 | def setDateLimit(self, datelimit) : |
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| 246 | """Sets the date limit for this quota.""" |
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| 247 | date = "%04i-%02i-%02i %02i:%02i:%02i" % (datelimit.year, datelimit.month, datelimit.day, datelimit.hour, datelimit.minute, datelimit.second) |
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| 248 | self.parent.writeUserPQuotaDateLimit(self, date) |
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| 249 | self.DateLimit = date |
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| 250 | |
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| 251 | def setLimits(self, softlimit, hardlimit) : |
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| 252 | """Sets the soft and hard limit for this quota.""" |
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| 253 | self.parent.writeUserPQuotaLimits(self, softlimit, hardlimit) |
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| 254 | self.SoftLimit = softlimit |
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| 255 | self.HardLimit = hardlimit |
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| 256 | |
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| 257 | def reset(self) : |
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| 258 | """Resets page counter to 0.""" |
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| 259 | self.parent.writeUserPQuotaPagesCounters(self, 0, int(self.LifePageCounter or 0)) |
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| 260 | self.PageCounter = 0 |
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| 261 | |
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| 262 | def increasePagesUsage(self, nbpages) : |
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| 263 | """Increase the value of used pages and money.""" |
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| 264 | if nbpages : |
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| 265 | jobprice = (float(self.Printer.PricePerPage or 0.0) * nbpages) + float(self.Printer.PricePerJob or 0.0) |
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| 266 | newpagecounter = int(self.PageCounter or 0) + nbpages |
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| 267 | newlifepagecounter = int(self.LifePageCounter or 0) + nbpages |
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| 268 | self.parent.beginTransaction() |
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| 269 | try : |
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| 270 | if jobprice : # optimization : don't access the database if unneeded. |
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| 271 | self.User.consumeAccountBalance(jobprice) |
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| 272 | self.parent.writeUserPQuotaPagesCounters(self, newpagecounter, newlifepagecounter) |
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| 273 | except PyKotaStorageError, msg : |
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| 274 | self.parent.rollbackTransaction() |
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| 275 | raise PyKotaStorageError, msg |
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| 276 | else : |
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| 277 | self.parent.commitTransaction() |
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| 278 | self.PageCounter = newpagecounter |
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| 279 | self.LifePageCounter = newlifepagecounter |
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| 280 | |
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| 281 | class StorageGroupPQuota(StorageObject) : |
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| 282 | """Group Print Quota class.""" |
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| 283 | def __init__(self, parent, group, printer) : |
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| 284 | StorageObject.__init__(self, parent) |
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| 285 | self.Group = group |
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| 286 | self.Printer = printer |
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| 287 | self.PageCounter = None |
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| 288 | self.LifePageCounter = None |
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| 289 | self.SoftLimit = None |
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| 290 | self.HardLimit = None |
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| 291 | self.DateLimit = None |
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| 292 | |
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| 293 | def setDateLimit(self, datelimit) : |
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| 294 | """Sets the date limit for this quota.""" |
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| 295 | date = "%04i-%02i-%02i %02i:%02i:%02i" % (datelimit.year, datelimit.month, datelimit.day, datelimit.hour, datelimit.minute, datelimit.second) |
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| 296 | self.parent.writeGroupPQuotaDateLimit(self, date) |
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| 297 | self.DateLimit = date |
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| 298 | |
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| 299 | def setLimits(self, softlimit, hardlimit) : |
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| 300 | """Sets the soft and hard limit for this quota.""" |
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| 301 | self.parent.writeGroupPQuotaLimits(self, softlimit, hardlimit) |
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| 302 | self.SoftLimit = softlimit |
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| 303 | self.HardLimit = hardlimit |
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| 304 | |
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| 305 | class StorageLastJob(StorageObject) : |
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| 306 | """Printer's Last Job class.""" |
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| 307 | def __init__(self, parent, printer) : |
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| 308 | StorageObject.__init__(self, parent) |
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| 309 | self.Printer = printer |
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| 310 | self.JobId = None |
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| 311 | self.User = None |
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| 312 | self.PrinterPageCounter = None |
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| 313 | self.JobSize = None |
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| 314 | self.JobAction = None |
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| 315 | self.JobDate = None |
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| 316 | |
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| 317 | def setSize(self, jobsize) : |
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| 318 | """Sets the last job's size.""" |
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| 319 | self.parent.writeLastJobSize(self, jobsize) |
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| 320 | self.JobSize = jobsize |
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| 321 | |
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[1130] | 322 | class BaseStorage : |
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| 323 | def __init__(self, pykotatool) : |
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| 324 | """Opens the LDAP connection.""" |
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| 325 | # raise PyKotaStorageError, "Sorry, the LDAP backend for PyKota is not yet implemented !" |
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| 326 | self.closed = 1 |
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| 327 | self.tool = pykotatool |
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| 328 | self.usecache = pykotatool.config.getCaching() |
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[1148] | 329 | self.disablehistory = pykotatool.config.getDisableHistory() |
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[1130] | 330 | if self.usecache : |
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| 331 | self.tool.logdebug("Caching enabled.") |
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| 332 | self.caches = { "USERS" : {}, "GROUPS" : {}, "PRINTERS" : {}, "USERPQUOTAS" : {}, "GROUPPQUOTAS" : {}, "JOBS" : {}, "LASTJOBS" : {} } |
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| 333 | |
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| 334 | def __del__(self) : |
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| 335 | """Ensures that the database connection is closed.""" |
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| 336 | self.close() |
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| 337 | |
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| 338 | def getFromCache(self, cachetype, key) : |
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| 339 | """Tries to extract something from the cache.""" |
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| 340 | if self.usecache : |
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| 341 | entry = self.caches[cachetype].get(key) |
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| 342 | if entry is not None : |
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| 343 | self.tool.logdebug("Cache hit (%s->%s)" % (cachetype, key)) |
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| 344 | else : |
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| 345 | self.tool.logdebug("Cache miss (%s->%s)" % (cachetype, key)) |
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| 346 | return entry |
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| 347 | |
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| 348 | def cacheEntry(self, cachetype, key, value) : |
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| 349 | """Puts an entry in the cache.""" |
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[1151] | 350 | if self.usecache and getattr(value, "Exists", 0) : |
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[1130] | 351 | self.caches[cachetype][key] = value |
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[1132] | 352 | self.tool.logdebug("Cache store (%s->%s)" % (cachetype, key)) |
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[1130] | 353 | |
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| 354 | def getUser(self, username) : |
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| 355 | """Returns the user from cache.""" |
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| 356 | user = self.getFromCache("USERS", username) |
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| 357 | if user is None : |
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| 358 | user = self.getUserFromBackend(username) |
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| 359 | self.cacheEntry("USERS", username, user) |
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| 360 | return user |
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| 361 | |
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| 362 | def getGroup(self, groupname) : |
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| 363 | """Returns the group from cache.""" |
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| 364 | group = self.getFromCache("GROUPS", groupname) |
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| 365 | if group is None : |
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| 366 | group = self.getGroupFromBackend(groupname) |
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| 367 | self.cacheEntry("GROUPS", groupname, group) |
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| 368 | return group |
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| 369 | |
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| 370 | def getPrinter(self, printername) : |
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| 371 | """Returns the printer from cache.""" |
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| 372 | printer = self.getFromCache("PRINTERS", printername) |
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| 373 | if printer is None : |
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| 374 | printer = self.getPrinterFromBackend(printername) |
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| 375 | self.cacheEntry("PRINTERS", printername, printer) |
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| 376 | return printer |
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| 377 | |
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| 378 | def getUserPQuota(self, user, printer) : |
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| 379 | """Returns the user quota information from cache.""" |
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| 380 | useratprinter = "%s@%s" % (user.Name, printer.Name) |
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| 381 | upquota = self.getFromCache("USERPQUOTAS", useratprinter) |
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| 382 | if upquota is None : |
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| 383 | upquota = self.getUserPQuotaFromBackend(user, printer) |
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| 384 | self.cacheEntry("USERPQUOTAS", useratprinter, upquota) |
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| 385 | return upquota |
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| 386 | |
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| 387 | def getGroupPQuota(self, group, printer) : |
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| 388 | """Returns the group quota information from cache.""" |
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| 389 | groupatprinter = "%s@%s" % (group.Name, printer.Name) |
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| 390 | gpquota = self.getFromCache("GROUPPQUOTAS", groupatprinter) |
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| 391 | if gpquota is None : |
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| 392 | gpquota = self.getGroupPQuotaFromBackend(group, printer) |
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| 393 | self.cacheEntry("GROUPPQUOTAS", groupatprinter, gpquota) |
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| 394 | return gpquota |
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| 395 | |
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| 396 | def getPrinterLastJob(self, printer) : |
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| 397 | """Extracts last job information for a given printer from cache.""" |
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| 398 | lastjob = self.getFromCache("LASTJOBS", printer.Name) |
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| 399 | if lastjob is None : |
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| 400 | lastjob = self.getPrinterLastJobFromBackend(printer) |
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| 401 | self.cacheEntry("LASTJOBS", printer.Name, lastjob) |
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| 402 | return lastjob |
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| 403 | |
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[1137] | 404 | def getGroupMembers(self, group) : |
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| 405 | """Returns the group's members list from in-group cache.""" |
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| 406 | if self.usecache : |
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| 407 | if not hasattr(group, "Members") : |
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| 408 | self.tool.logdebug("Cache miss (%s->Members)" % group.Name) |
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| 409 | group.Members = self.getGroupMembersFromBackend(group) |
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| 410 | self.tool.logdebug("Cache store (%s->Members)" % group.Name) |
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| 411 | else : |
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| 412 | self.tool.logdebug("Cache hit (%s->Members)" % group.Name) |
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| 413 | else : |
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| 414 | group.Members = self.getGroupMembersFromBackend(group) |
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| 415 | return group.Members |
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| 416 | |
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| 417 | def getUserGroups(self, user) : |
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| 418 | """Returns the user's groups list from in-user cache.""" |
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| 419 | if self.usecache : |
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| 420 | if not hasattr(user, "Groups") : |
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| 421 | self.tool.logdebug("Cache miss (%s->Groups)" % user.Name) |
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| 422 | user.Groups = self.getUserGroupsFromBackend(user) |
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| 423 | self.tool.logdebug("Cache store (%s->Groups)" % user.Name) |
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| 424 | else : |
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| 425 | self.tool.logdebug("Cache hit (%s->Groups)" % user.Name) |
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| 426 | else : |
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| 427 | user.Groups = self.getUserGroupsFromBackend(user) |
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| 428 | return user.Groups |
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| 429 | |
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[1021] | 430 | def openConnection(pykotatool) : |
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[695] | 431 | """Returns a connection handle to the appropriate Quota Storage Database.""" |
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[1021] | 432 | backendinfo = pykotatool.config.getStorageBackend() |
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[800] | 433 | backend = backendinfo["storagebackend"] |
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[695] | 434 | try : |
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[698] | 435 | if not backend.isalpha() : |
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[697] | 436 | # don't trust user input |
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| 437 | raise ImportError |
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[1021] | 438 | # |
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| 439 | # TODO : descending compatibility |
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| 440 | # |
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| 441 | if backend == "postgresql" : |
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| 442 | backend = "pgstorage" # TODO : delete, this is for descending compatibility only |
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[697] | 443 | exec "from pykota.storages import %s as storagebackend" % backend.lower() |
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[695] | 444 | except ImportError : |
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[773] | 445 | raise PyKotaStorageError, _("Unsupported quota storage backend %s") % backend |
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[695] | 446 | else : |
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[800] | 447 | host = backendinfo["storageserver"] |
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| 448 | database = backendinfo["storagename"] |
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[1087] | 449 | admin = backendinfo["storageadmin"] or backendinfo["storageuser"] |
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| 450 | adminpw = backendinfo["storageadminpw"] or backendinfo["storageuserpw"] |
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[1021] | 451 | return getattr(storagebackend, "Storage")(pykotatool, host, database, admin, adminpw) |
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