gnu-social/db
Brion Vibber 0e852def6a XMPP queued output & initial retooling of DB queue manager to support non-Notice objects.
Queue handlers for XMPP individual & firehose output now send their XML stanzas
to another output queue instead of connecting directly to the chat server. This
lets us have as many general processing threads as we need, while all actual
XMPP input and output go through a single daemon with a single connection open.

This avoids problems with multiple connected resources:
* multiple windows shown in some chat clients (psi, gajim, kopete)
* extra load on server
* incoming message delivery forwarding issues

Database changes:
* queue_item drops 'notice_id' in favor of a 'frame' blob.
  This is based on Craig Andrews' work branch to generalize queues to take any
  object, but conservatively leaving out the serialization for now.
  Table updater (preserves any existing queued items) in db/rc3to09.sql

Code changes to watch out for:
* Queue handlers should now define a handle() method instead of handle_notice()
* QueueDaemon and XmppDaemon now share common i/o (IoMaster) and respawning
  thread management (RespawningDaemon) infrastructure.
* The polling XmppConfirmManager has been dropped, as the message is queued
  directly when saving IM settings.
* Enable $config['queue']['debug_memory'] to output current memory usage at
  each run through the event loop to watch for memory leaks

To do:
* Adapt XMPP i/o to component connection mode for multi-site support.
* XMPP input can also be broken out to a queue, which would allow the actual
  notice save etc to be handled by general queue threads.
* Make sure there are no problems with simply pushing serialized Notice objects
  to queues.
* Find a way to improve interactive performance of the database-backed queue
  handler; polling is pretty painful to XMPP.
* Possibly redo the way QueueHandlers are injected into a QueueManager. The
  grouping used to split out the XMPP output queue is a bit awkward.
2010-01-21 22:40:35 -08:00
..
08to09_pg.sql fix typo / parse error in sql comment syntax 2009-12-13 11:54:05 +13:00
08to09.sql XMPP queued output & initial retooling of DB queue manager to support non-Notice objects. 2010-01-21 22:40:35 -08:00
074to080_pg.sql Revert "changed file.url column type from varcahr(255) to varchar(2047)" 2009-08-11 14:41:48 +12:00
074to080.sql Revert "changed file.url column type from varcahr(255) to varchar(2047)" 2009-08-11 14:41:48 +12:00
foreign_services.sql - Reworked login / logout workflow 2009-05-21 05:43:11 +00:00
innodb.sql a little sql script to drop full-text index and use innodb for profile and notice 2009-06-23 09:16:41 -07:00
location_namespace.sql add a couple of location namespaces 2009-10-21 22:43:40 -04:00
notice_source.sql ticket 1100: add Drupal source link 2009-12-01 12:55:55 -08:00
rc2torc3.sql script to upgrade from RC2 to RC3 2010-01-13 17:28:31 -08:00
rc3to09.sql XMPP queued output & initial retooling of DB queue manager to support non-Notice objects. 2010-01-21 22:40:35 -08:00
site.sql updates to Status_network 2009-06-15 08:54:52 -07:00
sms_carrier.sql Add ChinaMobile as an email to SMS carrier 2009-09-13 00:16:50 -04:00
statusnet_pg.sql fixed stray comma 2010-01-10 14:04:18 +13:00
statusnet.sql XMPP queued output & initial retooling of DB queue manager to support non-Notice objects. 2010-01-21 22:40:35 -08:00