1 | # PyKota |
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2 | # |
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3 | # PyKota : Print Quotas for CUPS and LPRng |
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4 | # |
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5 | # (c) 2003 Jerome Alet <alet@librelogiciel.com> |
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6 | # This program is free software; you can redistribute it and/or modify |
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7 | # it under the terms of the GNU General Public License as published by |
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8 | # the Free Software Foundation; either version 2 of the License, or |
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9 | # (at your option) any later version. |
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10 | # |
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11 | # This program is distributed in the hope that it will be useful, |
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12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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14 | # GNU General Public License for more details. |
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15 | # |
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16 | # You should have received a copy of the GNU General Public License |
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17 | # along with this program; if not, write to the Free Software |
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18 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. |
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19 | # |
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20 | # $Id$ |
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21 | # |
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22 | # $Log$ |
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23 | # Revision 1.13 2003/06/10 16:37:54 jalet |
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24 | # Deletion of the second user which is not needed anymore. |
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25 | # Added a debug configuration field in /etc/pykota.conf |
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26 | # All queries can now be sent to the logger in debug mode, this will |
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27 | # greatly help improve performance when time for this will come. |
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28 | # |
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29 | # Revision 1.12 2003/04/23 22:13:57 jalet |
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30 | # Preliminary support for LPRng added BUT STILL UNTESTED. |
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31 | # |
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32 | # Revision 1.11 2003/04/10 21:47:20 jalet |
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33 | # Job history added. Upgrade script neutralized for now ! |
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34 | # |
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35 | # Revision 1.10 2003/03/29 13:45:27 jalet |
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36 | # GPL paragraphs were incorrectly (from memory) copied into the sources. |
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37 | # Two README files were added. |
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38 | # Upgrade script for PostgreSQL pre 1.01 schema was added. |
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39 | # |
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40 | # Revision 1.9 2003/02/17 22:55:01 jalet |
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41 | # More options can now be set per printer or globally : |
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42 | # |
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43 | # admin |
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44 | # adminmail |
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45 | # gracedelay |
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46 | # requester |
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47 | # |
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48 | # the printer option has priority when both are defined. |
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49 | # |
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50 | # Revision 1.8 2003/02/17 22:05:50 jalet |
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51 | # Storage backend now supports admin and user passwords (untested) |
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52 | # |
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53 | # Revision 1.7 2003/02/10 12:07:31 jalet |
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54 | # Now repykota should output the recorded total page number for each printer too. |
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55 | # |
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56 | # Revision 1.6 2003/02/09 13:05:43 jalet |
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57 | # Internationalization continues... |
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58 | # |
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59 | # Revision 1.5 2003/02/08 22:39:46 jalet |
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60 | # --reset command line option added |
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61 | # |
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62 | # Revision 1.4 2003/02/08 09:59:59 jalet |
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63 | # Added preliminary base class for all storages |
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64 | # |
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65 | # Revision 1.3 2003/02/05 22:10:29 jalet |
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66 | # Typos |
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67 | # |
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68 | # Revision 1.2 2003/02/05 22:02:22 jalet |
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69 | # __import__ statement didn't work as expected |
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70 | # |
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71 | # Revision 1.1 2003/02/05 21:28:17 jalet |
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72 | # Initial import into CVS |
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73 | # |
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74 | # |
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75 | # |
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76 | |
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77 | class PyKotaStorageError(Exception): |
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78 | """An exception for Quota Storage related stuff.""" |
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79 | def __init__(self, message = ""): |
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80 | self.message = message |
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81 | Exception.__init__(self, message) |
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82 | def __repr__(self): |
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83 | return self.message |
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84 | __str__ = __repr__ |
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85 | |
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86 | def openConnection(pykotatool) : |
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87 | """Returns a connection handle to the appropriate Quota Storage Database.""" |
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88 | backendinfo = pykotatool.config.getStorageBackend() |
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89 | backend = backendinfo["storagebackend"] |
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90 | try : |
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91 | if not backend.isalpha() : |
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92 | # don't trust user input |
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93 | raise ImportError |
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94 | # |
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95 | # TODO : descending compatibility |
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96 | # |
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97 | if backend == "postgresql" : |
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98 | backend = "pgstorage" # TODO : delete, this is for descending compatibility only |
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99 | exec "from pykota.storages import %s as storagebackend" % backend.lower() |
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100 | except ImportError : |
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101 | raise PyKotaStorageError, _("Unsupported quota storage backend %s") % backend |
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102 | else : |
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103 | host = backendinfo["storageserver"] |
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104 | database = backendinfo["storagename"] |
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105 | admin = backendinfo["storageadmin"] |
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106 | adminpw = backendinfo["storageadminpw"] |
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107 | return getattr(storagebackend, "Storage")(pykotatool, host, database, admin, adminpw) |
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