root / pykota / trunk / pykota / storages / pgstorage.py @ 1277

Revision 1277, 30.0 kB (checked in by jalet, 20 years ago)

Small fix for history

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1# PyKota
2# -*- coding: ISO-8859-15 -*-
3#
4# PyKota : Print Quotas for CUPS and LPRng
5#
6# (c) 2003-2004 Jerome Alet <alet@librelogiciel.com>
7# This program is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation; either version 2 of the License, or
10# (at your option) any later version.
11#
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16#
17# You should have received a copy of the GNU General Public License
18# along with this program; if not, write to the Free Software
19# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
20#
21# $Id$
22#
23# $Log$
24# Revision 1.34  2004/01/12 15:12:50  jalet
25# Small fix for history
26#
27# Revision 1.33  2004/01/12 14:44:47  jalet
28# Missing space in SQL query
29#
30# Revision 1.32  2004/01/12 14:35:02  jalet
31# Printing history added to CGI script.
32#
33# Revision 1.31  2004/01/10 09:44:02  jalet
34# Fixed potential accuracy problem if a user printed on several printers at
35# the very same time.
36#
37# Revision 1.30  2004/01/08 16:33:27  jalet
38# Additionnal check to not create a circular printers group.
39#
40# Revision 1.29  2004/01/08 16:24:49  jalet
41# edpykota now supports adding printers to printer groups.
42#
43# Revision 1.28  2004/01/08 14:10:33  jalet
44# Copyright year changed.
45#
46# Revision 1.27  2004/01/06 14:24:59  jalet
47# Printer groups should be cached now, if caching is enabled.
48#
49# Revision 1.26  2003/12/29 14:12:48  uid67467
50# Tries to workaround possible integrity violations when retrieving printer groups
51#
52# Revision 1.25  2003/12/27 16:49:25  uid67467
53# Should be ok now.
54#
55# Revision 1.24  2003/11/29 22:02:14  jalet
56# Don't try to retrieve the user print quota information if current printer
57# doesn't exist.
58#
59# Revision 1.23  2003/11/23 19:01:37  jalet
60# Job price added to history
61#
62# Revision 1.22  2003/11/21 14:28:46  jalet
63# More complete job history.
64#
65# Revision 1.21  2003/11/12 13:06:38  jalet
66# Bug fix wrt no user/group name command line argument to edpykota
67#
68# Revision 1.20  2003/10/09 21:25:26  jalet
69# Multiple printer names or wildcards can be passed on the command line
70# separated with commas.
71# Beta phase.
72#
73# Revision 1.19  2003/10/08 07:01:20  jalet
74# Job history can be disabled.
75# Some typos in README.
76# More messages in setup script.
77#
78# Revision 1.18  2003/10/07 09:07:30  jalet
79# Character encoding added to please latest version of Python
80#
81# Revision 1.17  2003/10/06 13:12:28  jalet
82# More work on caching
83#
84# Revision 1.16  2003/10/03 18:01:49  jalet
85# Nothing interesting...
86#
87# Revision 1.15  2003/10/03 12:27:03  jalet
88# Several optimizations, especially with LDAP backend
89#
90# Revision 1.14  2003/10/03 08:57:55  jalet
91# Caching mechanism now caches all that's cacheable.
92#
93# Revision 1.13  2003/10/02 20:23:18  jalet
94# Storage caching mechanism added.
95#
96# Revision 1.12  2003/08/17 14:20:25  jalet
97# Bug fix by Oleg Biteryakov
98#
99# Revision 1.11  2003/07/29 20:55:17  jalet
100# 1.14 is out !
101#
102# Revision 1.10  2003/07/16 21:53:08  jalet
103# Really big modifications wrt new configuration file's location and content.
104#
105# Revision 1.9  2003/07/14 17:20:15  jalet
106# Bug in postgresql storage when modifying the prices for a printer
107#
108# Revision 1.8  2003/07/14 14:18:17  jalet
109# Wrong documentation strings
110#
111# Revision 1.7  2003/07/09 20:17:07  jalet
112# Email field added to PostgreSQL schema
113#
114# Revision 1.6  2003/07/07 11:49:24  jalet
115# Lots of small fixes with the help of PyChecker
116#
117# Revision 1.5  2003/07/07 08:33:19  jalet
118# Bug fix due to a typo in LDAP code
119#
120# Revision 1.4  2003/06/30 13:54:21  jalet
121# Sorts by user / group name
122#
123# Revision 1.3  2003/06/25 14:10:01  jalet
124# Hey, it may work (edpykota --reset excepted) !
125#
126# Revision 1.2  2003/06/12 21:09:57  jalet
127# wrongly placed code.
128#
129# Revision 1.1  2003/06/10 16:37:54  jalet
130# Deletion of the second user which is not needed anymore.
131# Added a debug configuration field in /etc/pykota.conf
132# All queries can now be sent to the logger in debug mode, this will
133# greatly help improve performance when time for this will come.
134#
135#
136#
137#
138
139from pykota.storage import PyKotaStorageError,BaseStorage,StorageObject,StorageUser,StorageGroup,StoragePrinter,StorageJob,StorageLastJob,StorageUserPQuota,StorageGroupPQuota
140
141try :
142    import pg
143except ImportError :   
144    import sys
145    # TODO : to translate or not to translate ?
146    raise PyKotaStorageError, "This python version (%s) doesn't seem to have the PygreSQL module installed correctly." % sys.version.split()[0]
147
148class Storage(BaseStorage) :
149    def __init__(self, pykotatool, host, dbname, user, passwd) :
150        """Opens the PostgreSQL database connection."""
151        BaseStorage.__init__(self, pykotatool)
152        try :
153            (host, port) = host.split(":")
154            port = int(port)
155        except ValueError :   
156            port = -1         # Use PostgreSQL's default tcp/ip port (5432).
157       
158        try :
159            self.database = pg.connect(host=host, port=port, dbname=dbname, user=user, passwd=passwd)
160        except pg.error, msg :
161            raise PyKotaStorageError, msg
162        else :   
163            self.closed = 0
164            self.tool.logdebug("Database opened (host=%s, port=%s, dbname=%s, user=%s)" % (host, port, dbname, user))
165           
166    def close(self) :   
167        """Closes the database connection."""
168        if not self.closed :
169            self.database.close()
170            self.closed = 1
171            self.tool.logdebug("Database closed.")
172       
173    def beginTransaction(self) :   
174        """Starts a transaction."""
175        self.database.query("BEGIN;")
176        self.tool.logdebug("Transaction begins...")
177       
178    def commitTransaction(self) :   
179        """Commits a transaction."""
180        self.database.query("COMMIT;")
181        self.tool.logdebug("Transaction committed.")
182       
183    def rollbackTransaction(self) :     
184        """Rollbacks a transaction."""
185        self.database.query("ROLLBACK;")
186        self.tool.logdebug("Transaction aborted.")
187       
188    def doSearch(self, query) :
189        """Does a search query."""
190        query = query.strip()   
191        if not query.endswith(';') :   
192            query += ';'
193        try :
194            self.tool.logdebug("QUERY : %s" % query)
195            result = self.database.query(query)
196        except pg.error, msg :   
197            raise PyKotaStorageError, msg
198        else :   
199            if (result is not None) and (result.ntuples() > 0) : 
200                return result.dictresult()
201           
202    def doModify(self, query) :
203        """Does a (possibly multiple) modify query."""
204        query = query.strip()   
205        if not query.endswith(';') :   
206            query += ';'
207        try :
208            self.tool.logdebug("QUERY : %s" % query)
209            result = self.database.query(query)
210        except pg.error, msg :   
211            raise PyKotaStorageError, msg
212        else :   
213            return result
214           
215    def doQuote(self, field) :
216        """Quotes a field for use as a string in SQL queries."""
217        if type(field) == type(0.0) : 
218            typ = "decimal"
219        elif type(field) == type(0) :   
220            typ = "int"
221        else :   
222            typ = "text"
223        return pg._quote(field, typ)
224       
225    def getAllUsersNames(self) :   
226        """Extracts all user names."""
227        usernames = []
228        result = self.doSearch("SELECT username FROM users")
229        if result :
230            usernames = [record["username"] for record in result]
231        return usernames
232       
233    def getAllGroupsNames(self) :   
234        """Extracts all group names."""
235        groupnames = []
236        result = self.doSearch("SELECT groupname FROM groups")
237        if result :
238            groupnames = [record["groupname"] for record in result]
239        return groupnames
240       
241    def getUserFromBackend(self, username) :   
242        """Extracts user information given its name."""
243        user = StorageUser(self, username)
244        result = self.doSearch("SELECT * FROM users WHERE username=%s LIMIT 1" % self.doQuote(username))
245        if result :
246            fields = result[0]
247            user.ident = fields.get("id")
248            user.LimitBy = fields.get("limitby")
249            user.AccountBalance = fields.get("balance")
250            user.LifeTimePaid = fields.get("lifetimepaid")
251            user.Email = fields.get("email")
252            user.Exists = 1
253        return user
254       
255    def getGroupFromBackend(self, groupname) :   
256        """Extracts group information given its name."""
257        group = StorageGroup(self, groupname)
258        result = self.doSearch("SELECT * FROM groups WHERE groupname=%s LIMIT 1" % self.doQuote(groupname))
259        if result :
260            fields = result[0]
261            group.ident = fields.get("id")
262            group.LimitBy = fields.get("limitby")
263            result = self.doSearch("SELECT SUM(balance) AS balance, SUM(lifetimepaid) AS lifetimepaid FROM users WHERE id IN (SELECT userid FROM groupsmembers WHERE groupid=%s)" % self.doQuote(group.ident))
264            if result :
265                fields = result[0]
266                group.AccountBalance = fields.get("balance")
267                group.LifeTimePaid = fields.get("lifetimepaid")
268            group.Exists = 1
269        return group
270       
271    def getPrinterFromBackend(self, printername) :       
272        """Extracts printer information given its name."""
273        printer = StoragePrinter(self, printername)
274        result = self.doSearch("SELECT * FROM printers WHERE printername=%s LIMIT 1" % self.doQuote(printername))
275        if result :
276            fields = result[0]
277            printer.ident = fields.get("id")
278            printer.PricePerJob = fields.get("priceperjob")
279            printer.PricePerPage = fields.get("priceperpage")
280            printer.LastJob = self.getPrinterLastJob(printer)
281            printer.Exists = 1
282        return printer   
283       
284    def getUserPQuotaFromBackend(self, user, printer) :       
285        """Extracts a user print quota."""
286        userpquota = StorageUserPQuota(self, user, printer)
287        if printer.Exists and user.Exists :
288            result = self.doSearch("SELECT id, lifepagecounter, pagecounter, softlimit, hardlimit, datelimit FROM userpquota WHERE userid=%s AND printerid=%s" % (self.doQuote(user.ident), self.doQuote(printer.ident)))
289            if result :
290                fields = result[0]
291                userpquota.ident = fields.get("id")
292                userpquota.PageCounter = fields.get("pagecounter")
293                userpquota.LifePageCounter = fields.get("lifepagecounter")
294                userpquota.SoftLimit = fields.get("softlimit")
295                userpquota.HardLimit = fields.get("hardlimit")
296                userpquota.DateLimit = fields.get("datelimit")
297                userpquota.Exists = 1
298        return userpquota
299       
300    def getGroupPQuotaFromBackend(self, group, printer) :       
301        """Extracts a group print quota."""
302        grouppquota = StorageGroupPQuota(self, group, printer)
303        if group.Exists :
304            result = self.doSearch("SELECT id, softlimit, hardlimit, datelimit FROM grouppquota WHERE groupid=%s AND printerid=%s" % (self.doQuote(group.ident), self.doQuote(printer.ident)))
305            if result :
306                fields = result[0]
307                grouppquota.ident = fields.get("id")
308                grouppquota.SoftLimit = fields.get("softlimit")
309                grouppquota.HardLimit = fields.get("hardlimit")
310                grouppquota.DateLimit = fields.get("datelimit")
311                result = self.doSearch("SELECT SUM(lifepagecounter) AS lifepagecounter, SUM(pagecounter) AS pagecounter FROM userpquota WHERE printerid=%s AND userid IN (SELECT userid FROM groupsmembers WHERE groupid=%s)" % (self.doQuote(printer.ident), self.doQuote(group.ident)))
312                if result :
313                    fields = result[0]
314                    grouppquota.PageCounter = fields.get("pagecounter")
315                    grouppquota.LifePageCounter = fields.get("lifepagecounter")
316                grouppquota.Exists = 1
317        return grouppquota
318       
319    def getPrinterLastJobFromBackend(self, printer) :       
320        """Extracts a printer's last job information."""
321        lastjob = StorageLastJob(self, printer)
322        result = self.doSearch("SELECT jobhistory.id, jobid, userid, username, pagecounter, jobsize, jobprice, filename, title, copies, options, jobdate FROM jobhistory, users WHERE printerid=%s AND userid=users.id ORDER BY jobdate DESC LIMIT 1" % self.doQuote(printer.ident))
323        if result :
324            fields = result[0]
325            lastjob.ident = fields.get("id")
326            lastjob.JobId = fields.get("jobid")
327            lastjob.User = self.getUser(fields.get("username"))
328            lastjob.PrinterPageCounter = fields.get("pagecounter")
329            lastjob.JobSize = fields.get("jobsize")
330            lastjob.JobPrice = fields.get("jobprice")
331            lastjob.JobAction = fields.get("action")
332            lastjob.JobFileName = fields.get("filename")
333            lastjob.JobTitle = fields.get("title")
334            lastjob.JobCopies = fields.get("copies")
335            lastjob.JobOptions = fields.get("options")
336            lastjob.JobDate = fields.get("jobdate")
337            lastjob.Exists = 1
338        return lastjob
339           
340    def getGroupMembersFromBackend(self, group) :       
341        """Returns the group's members list."""
342        groupmembers = []
343        result = self.doSearch("SELECT * FROM groupsmembers JOIN users ON groupsmembers.userid=users.id WHERE groupid=%s" % self.doQuote(group.ident))
344        if result :
345            for record in result :
346                user = StorageUser(self, record.get("username"))
347                user.ident = record.get("userid")
348                user.LimitBy = record.get("limitby")
349                user.AccountBalance = record.get("balance")
350                user.LifeTimePaid = record.get("lifetimepaid")
351                user.Email = record.get("email")
352                user.Exists = 1
353                groupmembers.append(user)
354                self.cacheEntry("USERS", user.Name, user)
355        return groupmembers       
356       
357    def getUserGroupsFromBackend(self, user) :       
358        """Returns the user's groups list."""
359        groups = []
360        result = self.doSearch("SELECT groupname FROM groupsmembers JOIN groups ON groupsmembers.groupid=groups.id WHERE userid=%s" % self.doQuote(user.ident))
361        if result :
362            for record in result :
363                groups.append(self.getGroup(record.get("groupname")))
364        return groups       
365       
366    def getParentPrintersFromBackend(self, printer) :   
367        """Get all the printer groups this printer is a member of."""
368        pgroups = []
369        result = self.doSearch("SELECT groupid,printername FROM printergroupsmembers JOIN printers ON groupid=id WHERE printerid=%s" % self.doQuote(printer.ident))
370        if result :
371            for record in result :
372                if record["groupid"] != printer.ident : # in case of integrity violation
373                    parentprinter = self.getPrinter(record.get("printername"))
374                    if parentprinter.Exists :
375                        pgroups.append(parentprinter)
376        return pgroups
377       
378    def getMatchingPrinters(self, printerpattern) :
379        """Returns the list of all printers for which name matches a certain pattern."""
380        printers = []
381        # We 'could' do a SELECT printername FROM printers WHERE printername LIKE ...
382        # but we don't because other storages semantics may be different, so every
383        # storage should use fnmatch to match patterns and be storage agnostic
384        result = self.doSearch("SELECT * FROM printers")
385        if result :
386            for record in result :
387                if self.tool.matchString(record["printername"], printerpattern.split(",")) :
388                    printer = StoragePrinter(self, record["printername"])
389                    printer.ident = record.get("id")
390                    printer.PricePerJob = record.get("priceperjob")
391                    printer.PricePerPage = record.get("priceperpage")
392                    printer.LastJob = self.getPrinterLastJob(printer)
393                    printer.Exists = 1
394                    printers.append(printer)
395                    self.cacheEntry("PRINTERS", printer.Name, printer)
396        return printers       
397       
398    def getPrinterUsersAndQuotas(self, printer, names=["*"]) :       
399        """Returns the list of users who uses a given printer, along with their quotas."""
400        usersandquotas = []
401        result = self.doSearch("SELECT users.id as uid,username,balance,lifetimepaid,limitby,email,userpquota.id,lifepagecounter,pagecounter,softlimit,hardlimit,datelimit FROM users JOIN userpquota ON users.id=userpquota.userid AND printerid=%s ORDER BY username ASC" % self.doQuote(printer.ident))
402        if result :
403            for record in result :
404                if self.tool.matchString(record.get("username"), names) :
405                    user = StorageUser(self, record.get("username"))
406                    user.ident = record.get("uid")
407                    user.LimitBy = record.get("limitby")
408                    user.AccountBalance = record.get("balance")
409                    user.LifeTimePaid = record.get("lifetimepaid")
410                    user.Email = record.get("email") 
411                    user.Exists = 1
412                    userpquota = StorageUserPQuota(self, user, printer)
413                    userpquota.ident = record.get("id")
414                    userpquota.PageCounter = record.get("pagecounter")
415                    userpquota.LifePageCounter = record.get("lifepagecounter")
416                    userpquota.SoftLimit = record.get("softlimit")
417                    userpquota.HardLimit = record.get("hardlimit")
418                    userpquota.DateLimit = record.get("datelimit")
419                    userpquota.Exists = 1
420                    usersandquotas.append((user, userpquota))
421                    self.cacheEntry("USERS", user.Name, user)
422                    self.cacheEntry("USERPQUOTAS", "%s@%s" % (user.Name, printer.Name), userpquota)
423        return usersandquotas
424               
425    def getPrinterGroupsAndQuotas(self, printer, names=["*"]) :       
426        """Returns the list of groups which uses a given printer, along with their quotas."""
427        groupsandquotas = []
428        result = self.doSearch("SELECT groupname FROM groups JOIN grouppquota ON groups.id=grouppquota.groupid AND printerid=%s ORDER BY groupname ASC" % self.doQuote(printer.ident))
429        if result :
430            for record in result :
431                if self.tool.matchString(record.get("groupname"), names) :
432                    group = self.getGroup(record.get("groupname"))
433                    grouppquota = self.getGroupPQuota(group, printer)
434                    groupsandquotas.append((group, grouppquota))
435        return groupsandquotas
436       
437    def addPrinter(self, printername) :       
438        """Adds a printer to the quota storage, returns it."""
439        self.doModify("INSERT INTO printers (printername) VALUES (%s)" % self.doQuote(printername))
440        return self.getPrinter(printername)
441       
442    def addUser(self, user) :       
443        """Adds a user to the quota storage, returns its id."""
444        self.doModify("INSERT INTO users (username, limitby, balance, lifetimepaid, email) VALUES (%s, %s, %s, %s, %s)" % (self.doQuote(user.Name), self.doQuote(user.LimitBy), self.doQuote(user.AccountBalance), self.doQuote(user.LifeTimePaid), self.doQuote(user.Email)))
445        return self.getUser(user.Name)
446       
447    def addGroup(self, group) :       
448        """Adds a group to the quota storage, returns its id."""
449        self.doModify("INSERT INTO groups (groupname, limitby) VALUES (%s, %s)" % (self.doQuote(group.Name), self.doQuote(group.LimitBy)))
450        return self.getGroup(group.Name)
451
452    def addUserToGroup(self, user, group) :   
453        """Adds an user to a group."""
454        result = self.doSearch("SELECT COUNT(*) AS mexists FROM groupsmembers WHERE groupid=%s AND userid=%s" % (self.doQuote(group.ident), self.doQuote(user.ident)))
455        try :
456            mexists = int(result[0].get("mexists"))
457        except (IndexError, TypeError) :   
458            mexists = 0
459        if not mexists :   
460            self.doModify("INSERT INTO groupsmembers (groupid, userid) VALUES (%s, %s)" % (self.doQuote(group.ident), self.doQuote(user.ident)))
461           
462    def addUserPQuota(self, user, printer) :
463        """Initializes a user print quota on a printer."""
464        self.doModify("INSERT INTO userpquota (userid, printerid) VALUES (%s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident)))
465        return self.getUserPQuota(user, printer)
466       
467    def addGroupPQuota(self, group, printer) :
468        """Initializes a group print quota on a printer."""
469        self.doModify("INSERT INTO grouppquota (groupid, printerid) VALUES (%s, %s)" % (self.doQuote(group.ident), self.doQuote(printer.ident)))
470        return self.getGroupPQuota(group, printer)
471       
472    def writePrinterPrices(self, printer) :   
473        """Write the printer's prices back into the storage."""
474        self.doModify("UPDATE printers SET priceperpage=%s, priceperjob=%s WHERE id=%s" % (self.doQuote(printer.PricePerPage), self.doQuote(printer.PricePerJob), self.doQuote(printer.ident)))
475       
476    def writeUserLimitBy(self, user, limitby) :   
477        """Sets the user's limiting factor."""
478        self.doModify("UPDATE users SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(user.ident)))
479       
480    def writeGroupLimitBy(self, group, limitby) :   
481        """Sets the group's limiting factor."""
482        self.doModify("UPDATE groups SET limitby=%s WHERE id=%s" % (self.doQuote(limitby), self.doQuote(group.ident)))
483       
484    def writeUserPQuotaDateLimit(self, userpquota, datelimit) :   
485        """Sets the date limit permanently for a user print quota."""
486        self.doModify("UPDATE userpquota SET datelimit=%s WHERE id=%s" % (self.doQuote(datelimit), self.doQuote(userpquota.ident)))
487           
488    def writeGroupPQuotaDateLimit(self, grouppquota, datelimit) :   
489        """Sets the date limit permanently for a group print quota."""
490        self.doModify("UPDATE grouppquota SET datelimit=%s WHERE id=%s" % (self.doQuote(datelimit), self.doQuote(grouppquota.ident)))
491       
492    def increaseUserPQuotaPagesCounters(self, userpquota, nbpages) :   
493        """Increase page counters for a user print quota."""
494        self.doModify("UPDATE userpquota SET pagecounter=pagecounter+%s,lifepagecounter=lifepagecounter+%s WHERE id=%s" % (self.doQuote(nbpages), self.doQuote(nbpages), self.doQuote(userpquota.ident)))
495       
496    def writeUserPQuotaPagesCounters(self, userpquota, newpagecounter, newlifepagecounter) :   
497        """Sets the new page counters permanently for a user print quota."""
498        self.doModify("UPDATE userpquota SET pagecounter=%s,lifepagecounter=%s WHERE id=%s" % (self.doQuote(newpagecounter), self.doQuote(newlifepagecounter), self.doQuote(userpquota.ident)))
499       
500    def decreaseUserAccountBalance(self, user, amount) :   
501        """Decreases user's account balance from an amount."""
502        self.doModify("UPDATE users SET balance=balance-%s WHERE id=%s" % (self.doQuote(amount), self.doQuote(user.ident)))
503       
504    def writeUserAccountBalance(self, user, newbalance, newlifetimepaid=None) :   
505        """Sets the new account balance and eventually new lifetime paid."""
506        if newlifetimepaid is not None :
507            self.doModify("UPDATE users SET balance=%s, lifetimepaid=%s WHERE id=%s" % (self.doQuote(newbalance), self.doQuote(newlifetimepaid), self.doQuote(user.ident)))
508        else :   
509            self.doModify("UPDATE users SET balance=%s WHERE id=%s" % (self.doQuote(newbalance), self.doQuote(user.ident)))
510           
511    def writeLastJobSize(self, lastjob, jobsize, jobprice) :       
512        """Sets the last job's size permanently."""
513        self.doModify("UPDATE jobhistory SET jobsize=%s, jobprice=%s WHERE id=%s" % (self.doQuote(jobsize), self.doQuote(jobprice), self.doQuote(lastjob.ident)))
514       
515    def writeJobNew(self, printer, user, jobid, pagecounter, action, jobsize=None, jobprice=None, filename=None, title=None, copies=None, options=None) :   
516        """Adds a job in a printer's history."""
517        if (not self.disablehistory) or (not printer.LastJob.Exists) :
518            if jobsize is not None :
519                self.doModify("INSERT INTO jobhistory (userid, printerid, jobid, pagecounter, action, jobsize, jobprice, filename, title, copies, options) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident), self.doQuote(jobid), self.doQuote(pagecounter), self.doQuote(action), self.doQuote(jobsize), self.doQuote(jobprice), self.doQuote(filename), self.doQuote(title), self.doQuote(copies), self.doQuote(options)))
520            else :   
521                self.doModify("INSERT INTO jobhistory (userid, printerid, jobid, pagecounter, action, filename, title, copies, options) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s)" % (self.doQuote(user.ident), self.doQuote(printer.ident), self.doQuote(jobid), self.doQuote(pagecounter), self.doQuote(action), self.doQuote(filename), self.doQuote(title), self.doQuote(copies), self.doQuote(options)))
522        else :       
523            # here we explicitly want to reset jobsize to NULL if needed
524            self.doModify("UPDATE jobhistory SET userid=%s, jobid=%s, pagecounter=%s, action=%s, jobsize=%s, jobprice=%s, filename=%s, title=%s, copies=%s, options=%s, jobdate=now() WHERE id=%s" % (self.doQuote(user.ident), self.doQuote(jobid), self.doQuote(pagecounter), self.doQuote(action), self.doQuote(jobsize), self.doQuote(jobprice), self.doQuote(filename), self.doQuote(title), self.doQuote(copies), self.doQuote(options), self.doQuote(printer.LastJob.ident)))
525           
526    def writeUserPQuotaLimits(self, userpquota, softlimit, hardlimit) :
527        """Sets soft and hard limits for a user quota."""
528        self.doModify("UPDATE userpquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE id=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(userpquota.ident)))
529       
530    def writeGroupPQuotaLimits(self, grouppquota, softlimit, hardlimit) :
531        """Sets soft and hard limits for a group quota on a specific printer."""
532        self.doModify("UPDATE grouppquota SET softlimit=%s, hardlimit=%s, datelimit=NULL WHERE id=%s" % (self.doQuote(softlimit), self.doQuote(hardlimit), self.doQuote(grouppquota.ident)))
533
534    def writePrinterToGroup(self, pgroup, printer) :
535        """Puts a printer into a printer group."""
536        children = []
537        result = self.doSearch("SELECT printerid FROM printergroupsmembers WHERE groupid=%s" % self.doQuote(pgroup.ident))
538        if result :
539            for record in result :
540                children.append(record.get("printerid")) # TODO : put this into the database integrity rules
541        if printer.ident not in children :       
542            self.doModify("INSERT INTO printergroupsmembers (groupid, printerid) VALUES (%s, %s)" % (self.doQuote(pgroup.ident), self.doQuote(printer.ident)))
543       
544    def retrieveHistory(self, user=None, printer=None, datelimit=None, limit=100) :   
545        """Retrieves all print jobs for user on printer (or all) before date, limited to first 100 results."""
546        query = "SELECT jobhistory.*,username,printername FROM jobhistory,users,printers WHERE users.id=userid AND printers.id=printerid"
547        where = []
548        if (user is not None) and user.Exists :
549            where.append("userid=%s" % self.doQuote(user.ident))
550        if (printer is not None) and printer.Exists :
551            where.append("printerid=%s" % self.doQuote(printer.ident))
552        if datelimit is not None :   
553            where.append("jobdate<=%s" % self.doQuote(datelimit))
554        if where :   
555            query += " AND %s" % " AND ".join(where)
556        query += " ORDER BY id DESC"
557        if limit :
558            query += " LIMIT %s" % self.doQuote(int(limit))
559        jobs = []   
560        result = self.doSearch(query)   
561        if result :
562            for fields in result :
563                job = StorageJob(self)
564                job.ident = fields.get("id")
565                job.JobId = fields.get("jobid")
566                job.PrinterPageCounter = fields.get("pagecounter")
567                job.JobSize = fields.get("jobsize")
568                job.JobPrice = fields.get("jobprice")
569                job.JobAction = fields.get("action")
570                job.JobFileName = fields.get("filename")
571                job.JobTitle = fields.get("title")
572                job.JobCopies = fields.get("copies")
573                job.JobOptions = fields.get("options")
574                job.JobDate = fields.get("jobdate")
575                job.User = self.getUser(fields.get("username"))
576                job.Printer = self.getPrinter(fields.get("printername"))
577                job.Exists = 1
578                jobs.append(job)
579        return jobs
580       
581    def deleteUser(self, user) :   
582        """Completely deletes an user from the Quota Storage."""
583        # TODO : What should we do if we delete the last person who used a given printer ?
584        # TODO : we can't reassign the last job to the previous one, because next user would be
585        # TODO : incorrectly charged (overcharged).
586        for q in [ 
587                    "DELETE FROM groupsmembers WHERE userid=%s" % self.doQuote(user.ident),
588                    "DELETE FROM jobhistory WHERE userid=%s" % self.doQuote(user.ident),
589                    "DELETE FROM userpquota WHERE userid=%s" % self.doQuote(user.ident),
590                    "DELETE FROM users WHERE id=%s" % self.doQuote(user.ident),
591                  ] :
592            self.doModify(q)
593       
594    def deleteGroup(self, group) :   
595        """Completely deletes a group from the Quota Storage."""
596        for q in [
597                   "DELETE FROM groupsmembers WHERE groupid=%s" % self.doQuote(group.ident),
598                   "DELETE FROM grouppquota WHERE groupid=%s" % self.doQuote(group.ident),
599                   "DELETE FROM groups WHERE id=%s" % self.doQuote(group.ident),
600                 ] : 
601            self.doModify(q)
602       
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