Commit Graph

35 Commits

Author SHA1 Message Date
Brion Vibber
26fdf0c9d2 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 16:42:50 -08:00
Brion Vibber
ec145b73fc Major refactoring of queue handlers to support running multiple sites in one daemon.
Key changes:
* Initialization code moved from common.php to StatusNet class;
  can now switch configurations during runtime.
* As a consequence, configuration files must now be idempotent...
  Be careful with constant, function or class definitions.
* Control structure for daemons/QueueManager/QueueHandler has been refactored;
  the run loop is now managed by IoMaster run via scripts/queuedaemon.php
  IoManager subclasses are woken to handle socket input or polling, and may
  cover multiple sites.
* Plugins can implement notice queue handlers more easily by registering a
  QueueHandler class; no more need to add a daemon.

The new QueueDaemon runs from scripts/queuedaemon.php:

* This replaces most of the old *handler.php scripts; they've been refactored
  to the bare handler classes.
* Spawns multiple child processes to spread load; defaults to CPU count on
  Linux and Mac OS X systems, or override with --threads=N
* When multithreaded, child processes are automatically respawned on failure.
* Threads gracefully shut down and restart when passing a soft memory limit
  (defaults to 90% of memory_limit), limiting damage from memory leaks.
* Support for UDP-based monitoring: http://www.gitorious.org/snqmon

Rough control flow diagram:
QueueDaemon -> IoMaster -> IoManager
                           QueueManager [listen or poll] -> QueueHandler
                           XmppManager [ping & keepalive]
                           XmppConfirmManager [poll updates]

Todo:

* Respawning features not currently available running single-threaded.
* When running single-site, configuration changes aren't picked up.
* New sites or config changes affecting queue subscriptions are not yet
  handled without a daemon restart.
* SNMP monitoring output to integrate with general tools (nagios, ganglia)
* Convert XMPP confirmation message sends to use stomp queue instead of polling
* Convert xmppdaemon.php to IoManager?
* Convert Twitter status, friends import polling daemons to IoManager
* Clean up some error reporting and failure modes
* May need to adjust queue priorities for best perf in backlog/flood cases

Detailed code history available in my daemon-work branch:
http://www.gitorious.org/~brion/statusnet/brion-fixes/commits/daemon-work
2010-01-12 20:45:09 -08:00
Brion Vibber
088081675f Revert "Remove more contractions"
This reverts commit 5ab709b739.

Missed this one yesterday...
2009-11-09 20:01:46 +01:00
Siebrand Mazeland
5ab709b739 Remove more contractions
* doesn't
* won't
* isn't
* don't
2009-11-08 23:32:15 +01:00
Brion Vibber
c6d1039901 Add some doc comments to QueueHandler 2009-10-22 10:11:04 -07:00
Evan Prodromou
df86aa7214 define LACONICA and accept LACONICA for backwards compatibility 2009-08-26 10:41:36 -04:00
Evan Prodromou
c5cf2c4c94 Merge branch '0.8.x' into testing 2009-08-26 10:27:53 -04:00
Evan Prodromou
e1b5ca85f9 more log output in queue handlers 2009-08-26 05:46:41 -04:00
Evan Prodromou
865b716f09 change LACONICA to STATUSNET 2009-08-25 18:42:34 -04:00
Evan Prodromou
4737563b95 a distributed -> the distributed 2009-08-25 18:14:12 -04:00
Evan Prodromou
c8b8f07af1 change Laconica and Control Yourself to StatusNet in PHP files 2009-08-25 18:12:20 -04:00
Zach Copley
64853769b3 Moved $_id from queuehandler to daemon, as other daemons need it too. 2009-07-17 18:07:53 -07:00
Evan Prodromou
03200235b1 use select() to bring down xmpp latency 2009-07-09 12:09:20 -04:00
Evan Prodromou
49c5c6f92b move handling code into queuemanager 2009-07-04 00:31:28 -04:00
Evan Prodromou
5f9a4ebef4 Merge branch '0.8.x' into queuemanager 2009-07-02 08:51:10 -04:00
Evan Prodromou
e52997e52f change queuehandler class to use queuemanager interface 2009-07-01 12:11:02 -04:00
Evan Prodromou
6ca4dfa7ef Daemon can optionally not go into the background 2009-06-28 16:12:23 -04:00
Evan Prodromou
63f12c48a8 make stomp server work with username and password 2009-06-24 19:17:41 -07:00
Evan Prodromou
aec6456c91 Update copyright dates in files modified in 2009 2009-06-20 16:12:55 -07:00
Evan Prodromou
793a6a1155 change Controlez-Vous to Control Yourself 2009-06-20 16:00:04 -07:00
Evan Prodromou
bd120bc315 reformat queuehandler.php 2009-04-03 12:45:54 -04:00
Federico Marani
2ac684f53d * implemented STOMP support for external message queueing systems
* (ticket-724)
* included PHP STOMP libraries (http://code.google.com/p/stompcli/)
2009-02-20 18:57:20 +00:00
Evan Prodromou
b264c03d32 move opening brace of class declaration to next line
Another gigantor PEAR coding standards patch. Here, I've moved the
opening curly bracket on a class statement to the following line.

darcs-hash:20081223194923-84dde-77a93de314caadbcb5b70bf346a4648be77a864e.gz
2008-12-23 14:49:23 -05:00
Evan Prodromou
04ef1ba8ee change function headers to K&R style
Another huge change, for PEAR code standards compliance. Function
headers have to be in K&R style (opening brace on its own line),
instead of having the opening brace on the same line as the function
and parameters. So, a little perl magic found all the function
definitions and move the opening brace to the next line (properly
indented... usually).

darcs-hash:20081223193323-84dde-a28e36ecc66672c783c2842d12fc11043c13ab28.gz
2008-12-23 14:33:23 -05:00
Evan Prodromou
eb2f9c98ac replace NULL with null
Another global search-and-replace update. Here, I've replaced the PHP
keyword 'NULL' with its lowercase version. This is another PEAR code
standards change.

darcs-hash:20081223192129-84dde-4a0182e0ec16a01ad88745ad3e08f7cb501aee0b.gz
2008-12-23 14:21:29 -05:00
Evan Prodromou
edbc0c665c replace all tabs with four spaces
The PEAR coding standards decree: no tabs, but indent by four spaces.
I've done a global search-and-replace on all tabs, replacing them by
four spaces. This is a huge change, but it will go a long way to
getting us towards phpcs-compliance. And that means better code
readability, and that means more participation.

darcs-hash:20081223191907-84dde-21e8efe210e6d5d54e935a22d0cee5c7bbfc007d.gz
2008-12-23 14:19:07 -05:00
Evan Prodromou
ebbd5c1e11 explicitly load classes for queuehandler
darcs-hash:20081005191505-5ed1f-f0783711adae8381c5ca987f3f7299393ed435e1.gz
2008-10-05 15:15:05 -04:00
Evan Prodromou
0c71340c9f free and unset DB_DataObjects after we're done with them
darcs-hash:20080906015501-84dde-e787962b9805759224389dd42a211dfa21da3473.gz
2008-09-05 21:55:01 -04:00
Evan Prodromou
aed0fff4ea scripts daemonize themselves
darcs-hash:20080904184031-84dde-eba2061f3aa898d0c791ffeb70837f759778c567.gz
2008-09-04 14:40:31 -04:00
Evan Prodromou
d5f83d9252 switch around how XMLStream does processing
darcs-hash:20080831003210-84dde-92ccffd5b2e1d50963b18babd93c70fb1d20cdba.gz
2008-08-30 20:32:10 -04:00
evan
55816cf24e some fixes from on the jabber server
darcs-hash:20080830083502-5b646-d6a66157d86ca84cfa6cf6280bb2eb17bc20e02d.gz
2008-08-30 04:35:02 -04:00
Evan Prodromou
ac85a4b0fa less sleeping, slightly
darcs-hash:20080830064431-84dde-42629109de11f65da9d876aee168abdf7c4ced3d.gz
2008-08-30 02:44:31 -04:00
Evan Prodromou
f5fe013657 many jabber queue management changes
Added a method to QueueManager to let subclasses do stuff when idle.
Needed so that XMPP queue manager can service its message queue.

Cleaned up jabber_broadcast_message quite a bit. Use custom joins
instead of loop-and-query, should fix some problems with users who are
getting messages even after turning off notification. Only build $msg
and $entry once, and use the XMPPHP function for messages with a
payload, rather than rolling our own.

darcs-hash:20080829200352-84dde-427e4ca8c81d4222a36f78e7c580b611ff0bf765.gz
2008-08-29 16:03:52 -04:00
Evan Prodromou
9cdb33ac0e don't clear claims immediately
darcs-hash:20080828002610-84dde-d9cb46cb08ac50b8efbdf5683baeb2de168fc4b1.gz
2008-08-27 20:26:10 -04:00
Evan Prodromou
b9f0ea6f0e break up monolithic xmppdaemon into multiple queue handlers
Eventually, the poor xmppdaemon has become overloaded with extra
tasks. So, I've broken it up. Now, we have 5 background scripts, and
more coming:

* xmppdaemon.php - handles incoming XMPP messages only.
* xmppqueuehandler.php - sends notices from the queue out through XMPP.
* smsqueuehandler.php - sends notices from the queue out over SMS
* ombqueuehandler.php - sends notices from the queue out over OMB
* xmppconfirmhandler.php - sends confirmation requests out over XMPP.

This is in addition to maildaemon.php, which takes incoming messages.

None of these are "true" daemons -- they don't daemonize themselves
automatically. Use nohup or another tool to background them. monit can
also be useful to keep them running.

At some point, these might become fork()'ing daemons, able to handle
more than one notice at a time. For now, I'm just running multiple
instances, hoping they don't interfere.

darcs-hash:20080827205407-84dde-97884a12f5f4e54c93bc785bd280683d1ee7e749.gz
2008-08-27 16:54:07 -04:00