1 | # PyKota |
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2 | # -*- coding: ISO-8859-15 -*- |
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3 | # |
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4 | # PyKota - Print Quotas for CUPS and LPRng |
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5 | # |
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6 | # (c) 2003-2004 Jerome Alet <alet@librelogiciel.com> |
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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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11 | # |
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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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20 | # |
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21 | # $Id$ |
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22 | # |
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23 | # $Log$ |
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24 | # Revision 1.11 2004/09/24 21:19:48 jalet |
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25 | # Did a pass of PyChecker |
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26 | # |
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27 | # Revision 1.10 2004/08/31 23:29:53 jalet |
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28 | # Introduction of the new 'onaccountererror' configuration directive. |
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29 | # Small fix for software accounter's return code which can't be None anymore. |
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30 | # Make software and hardware accounting code look similar : will be factorized |
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31 | # later. |
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32 | # |
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33 | # Revision 1.9 2004/08/25 22:34:39 jalet |
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34 | # Now both software and hardware accounting raise an exception when no valid |
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35 | # result can be extracted from the subprocess' output. |
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36 | # Hardware accounting now reads subprocess' output until an integer is read |
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37 | # or data is exhausted : it now behaves just like software accounting in this |
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38 | # aspect. |
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39 | # |
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40 | # Revision 1.8 2004/08/22 14:04:47 jalet |
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41 | # Tries to fix problem with subprocesses outputting more datas than needed |
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42 | # |
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43 | # Revision 1.7 2004/08/06 13:45:51 jalet |
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44 | # Fixed french translation problem. |
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45 | # Fixed problem with group quotas and strict enforcement. |
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46 | # |
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47 | # Revision 1.6 2004/07/01 19:56:43 jalet |
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48 | # Better dispatching of error messages |
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49 | # |
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50 | # Revision 1.5 2004/06/10 22:42:06 jalet |
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51 | # Better messages in logs |
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52 | # |
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53 | # Revision 1.4 2004/06/02 21:51:14 jalet |
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54 | # Moved the sigterm capturing elsewhere |
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55 | # |
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56 | # Revision 1.3 2004/05/24 22:45:49 jalet |
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57 | # New 'enforcement' directive added |
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58 | # Polling loop improvements |
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59 | # |
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60 | # Revision 1.2 2004/05/18 14:49:23 jalet |
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61 | # Big code changes to completely remove the need for "requester" directives, |
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62 | # jsut use "hardware(... your previous requester directive's content ...)" |
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63 | # |
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64 | # Revision 1.1 2004/05/13 13:59:30 jalet |
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65 | # Code simplifications |
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66 | # |
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67 | # |
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68 | |
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69 | import os |
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70 | import popen2 |
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71 | from pykota.accounter import AccounterBase, PyKotaAccounterError |
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72 | |
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73 | class Accounter(AccounterBase) : |
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74 | def computeJobSize(self) : |
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75 | """Feeds an external command with our datas to let it compute the job size, and return its value.""" |
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76 | self.filter.printInfo(_("Launching SOFTWARE(%s)...") % self.arguments) |
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77 | MEGABYTE = 1024*1024 |
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78 | self.filter.jobdatastream.seek(0) |
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79 | child = popen2.Popen4(self.arguments) |
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80 | try : |
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81 | data = self.filter.jobdatastream.read(MEGABYTE) |
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82 | while data : |
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83 | child.tochild.write(data) |
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84 | data = self.filter.jobdatastream.read(MEGABYTE) |
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85 | child.tochild.flush() |
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86 | child.tochild.close() |
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87 | except (IOError, OSError), msg : |
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88 | msg = "%s : %s" % (self.arguments, msg) |
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89 | self.filter.printInfo(_("Unable to compute job size with accounter %s") % msg) |
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90 | |
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91 | pagecounter = None |
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92 | try : |
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93 | answer = child.fromchild.read() |
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94 | except (IOError, OSError), msg : |
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95 | msg = "%s : %s" % (self.arguments, msg) |
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96 | self.filter.printInfo(_("Unable to compute job size with accounter %s") % msg) |
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97 | else : |
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98 | lines = [l.strip() for l in answer.split("\n")] |
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99 | for i in range(len(lines)) : |
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100 | try : |
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101 | pagecounter = int(lines[i]) |
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102 | except (AttributeError, ValueError) : |
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103 | self.filter.printInfo(_("Line [%s] skipped in accounter's output. Trying again...") % lines[i]) |
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104 | else : |
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105 | break |
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106 | child.fromchild.close() |
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107 | |
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108 | try : |
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109 | status = child.wait() |
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110 | except OSError, msg : |
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111 | self.filter.printInfo(_("Problem while waiting for software accounter pid %s to exit : %s") % (child.pid, msg)) |
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112 | else : |
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113 | if os.WIFEXITED(status) : |
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114 | status = os.WEXITSTATUS(status) |
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115 | self.filter.printInfo(_("Software accounter %s exit code is %s") % (self.arguments, str(status))) |
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116 | |
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117 | if pagecounter is None : |
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118 | message = _("Unable to compute job size with accounter %s") % self.arguments |
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119 | if self.onerror == "CONTINUE" : |
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120 | self.filter.printInfo(message, "error") |
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121 | else : |
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122 | raise PyKotaAccounterError, message |
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123 | |
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124 | self.filter.logdebug("Software accounter %s said job is %s pages long." % (self.arguments, repr(pagecounter))) |
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125 | return pagecounter or 0 |
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