Tickets :: [#12458] IMAP Cache Problem

6.0.0-alpha10

5/17/25

Summary	IMAP Cache Problem
Queue	IMP
Queue Version	6.1.2
Type	Bug
State	No Feedback
Priority	1. Low
Owners
Requester	busywater (at) gmail (dot) com
Created	07/15/2013 (4324 days ago)
Due
Updated	07/24/2013 (4315 days ago)
Assigned
Resolved	07/24/2013 (4315 days ago)
Milestone
Patch	No

07/24/2013 11:13:32 PM	Michael Slusarz	State ⇒ No Feedback

07/16/2013 04:13:56 AM	Michael Slusarz	Comment #5	Reply to this comment
I found out the problem is not related with imapproxy / dovecot / redis. You haven't told me anything other than your cache setup isn't working. This has provided no detail as to why your setup isn't working. In other words - why doesn't the cache object exist when you are trying to access it. That's what is important, not what your cache settings are. You need to debug at the PHP level why this is happening (e.g. tracing the code with breakpoints) most likely. If you are unable/unwilling to do this, there is nothing more we can do from this end.

07/16/2013 03:56:10 AM	busywater (at) gmail (dot) com	Comment #4	Reply to this comment
I found out the problem is not related with imapproxy / dovecot / redis. Either two of the following settings of horde can trigger the problem: Set A: $conf['cache']['driver'] = 'Hashtable'; $conf['cache']['use_memorycache'] = 'Hashtable'; $conf['hashtable']['params']['hostspec'] = array('localhost'); $conf['hashtable']['params']['port'] = array('6379'); $conf['hashtable']['driver'] = 'Predis'; Set B: $conf['cache']['driver'] = 'File'; $conf['cache']['use_memorycache'] = 'Hashtable'; $conf['hashtable']['params']['hostspec'] = array('localhost'); $conf['hashtable']['params']['port'] = array('6379'); $conf['hashtable']['driver'] = 'Predis'; I resort to turn off the caching to avoid the imp error by the following settings: $conf['cache']['default_lifetime'] = 86400; $conf['cache']['driver'] = 'Null'; $conf['cache']['use_memorycache'] = 'Hashtable'; $conf['hashtable']['params']['hostspec'] = array('localhost'); $conf['hashtable']['params']['port'] = array('6379'); $conf['hashtable']['driver'] = 'Predis'; Did I mis-configure anything? Or this is Horde_Cache problem?

07/15/2013 06:02:24 PM	Michael Slusarz	Comment #3 Priority ⇒ 1. Low	Reply to this comment
Can't reproduce. You will need to debug to figure out why the cache driver isn't initialized for you.

07/15/2013 02:04:03 PM	busywater (at) mail (dot) com	Comment #2	Reply to this comment
Further studying the problem, I turn on the debug in imp backend. Steps to reproduce the error. Step 1. Login horde with accounta and logout Step 2. Login horde with accountb and the error occurs. ------------------------------ Mon, 15 Jul 2013 14:01:41 +0000 S: * OK [CAPABILITY IMAP4rev1 LITERAL+ LOGIN-REFERRALS ID ENABLE XIMAPPROXY] Dovecot ready. 1 [LOGIN Command - username: accountb@domain.com] S: * OK [XPROXYREUSE] IMAP connection reused by imapproxy S: 1 OK User logged in C: 2 LOGOUT S: * BYE LOGOUT received S: 2 OK Completed ------------------------------ Mon, 15 Jul 2013 14:01:42 +0000 S: * OK [CAPABILITY IMAP4rev1 LITERAL+ LOGIN-REFERRALS ID ENABLE XIMAPPROXY] Dovecot ready. 1 [LOGIN Command - username: accountb@domain.com] S: * OK [XPROXYREUSE] IMAP connection reused by imapproxy S: 1 OK User logged in CACHE: Using the Horde_Imap_Client_Cache_Backend_Cache storage driver. C: 3 LOGOUT S: * BYE LOGOUT received S: 3 OK Completed

07/15/2013 02:03:52 AM	busywater (at) gmail (dot) com	Comment #1 Priority ⇒ 2. Medium Type ⇒ Bug Summary ⇒ IMAP Cache Problem Queue ⇒ IMP Milestone ⇒ Patch ⇒ No State ⇒ Unconfirmed	Reply to this comment
My environment is as follows: dovecot 2.2.4 Imapproxy 1.2.7 horde 5.1.1 imp 6.1.2 Redis (2.6.14) as caching driver When I turn on cache = 'cache' in imp backend.local.php, I got the 'Error when communicating with the server' in viewing the email box. The apache logs show: [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP Fatal error: Call to a member function get() on a non-object in /usr/share/php/Horde/Cache/Storage/Hashtable.php on line 68, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP Stack trace:, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 1. {main}() /var/www/html/webmail/services/ajax.php:0, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 2. Horde_Core_Ajax_Application->doAction() /var/www/html/webmail/services/ajax.php:58, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 3. call_user_func() /usr/share/php/Horde/Core/Ajax/Application.php:162, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 4. IMP_Ajax_Application_Handler_Dynamic->dynamicInit() /usr/share/php/Horde/Core/Ajax/Application.php:162, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 5. Horde_Core_Ajax_Application->callAction() /var/www/html/webmail/imp/lib/Ajax/Application/Handler/Dynamic.php:373, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 6. call_user_func() /usr/share/php/Horde/Core/Ajax/Application.php:232, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 7. IMP_Ajax_Application_Handler_Common->viewPort() /usr/share/php/Horde/Core/Ajax/Application.php:232, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 8. IMP_Ajax_Application->viewPortData() /var/www/html/webmail/imp/lib/Ajax/Application/Handler/Common.php:99, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 9. IMP_Ajax_Application_ListMessages->listMessages() /var/www/html/webmail/imp/lib/Ajax/Application.php:246, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 10. IMP_Imap->openMailbox() /var/www/html/webmail/imp/lib/Ajax/Application/ListMessages.php:133, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 11. IMP_Imap->__call() /var/www/html/webmail/imp/lib/Ajax/Application/ListMessages.php:133, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 12. call_user_func_array() /var/www/html/webmail/imp/lib/Imap.php:569, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 13. Horde_Imap_Client_Base->openMailbox() /var/www/html/webmail/imp/lib/Imap.php:569, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 14. Horde_Imap_Client_Socket->_openMailbox() /usr/share/php/Horde/Imap/Client/Base.php:978, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 15. Horde_Imap_Client_Cache->getMetaData() /usr/share/php/Horde/Imap/Client/Socket.php:923, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 16. Horde_Imap_Client_Cache_Backend_Cache->getMetaData() /usr/share/php/Horde/Imap/Client/Cache.php:173, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 17. Horde_Imap_Client_Cache_Backend_Cache->_loadSliceMap() /usr/share/php/Horde/Imap/Client/Cache/Backend/Cache.php:255, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 18. Horde_Cache->get() /usr/share/php/Horde/Imap/Client/Cache/Backend/Cache.php:435, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox [Wed Jul 10 00:32:47 2013] [error] [client 1.2.3.4] PHP 19. Horde_Cache_Storage_Hashtable->get() /usr/share/php/Horde/Cache.php:97, referer: https://mail.domain.org/imp/dynamic.php?page=mailbox However, when logout and login horde, the error does not appear and IMP become functional again. So, it is not good to ask the users to try login agin to make viewing emails possible. There is no choice but to turn off caching of imap backend by setting 'cache' => false. Please offer help. Thanks.