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2010-01-12Major refactoring of queue handlers to support running multiple sites in one ↵Brion Vibber
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
2009-08-25change controlyourself.ca to status.netEvan Prodromou
2009-08-25change laconi.ca to status.netEvan Prodromou
2009-08-25change Laconica and Control Yourself to StatusNet in PHP filesEvan Prodromou
2009-07-09one more shot at servicing queuesEvan Prodromou
2009-07-09Revert "Let the queue handlers drain their xmpp queues"Evan Prodromou
This reverts commit fc3442a041a43f2df29deedc0ad96fbd6ba92385.
2009-07-09Let the queue handlers drain their xmpp queuesEvan Prodromou
2009-07-09yet another select() refinementEvan Prodromou
2009-07-09slightly more robust select() logicEvan Prodromou
2009-07-09use select() to bring down xmpp latencyEvan Prodromou
2009-07-09slightly better timingEvan Prodromou
2009-07-08manually re-enqueue failed noticesEvan Prodromou
2009-07-08log errors in handling noticesEvan Prodromou
2009-07-05better handling of frames and noticesEvan Prodromou
2009-07-04better debug logging in stomp queue managerEvan Prodromou
2009-07-04don't say we're connecting if we're notEvan Prodromou
2009-07-04move handling code into queuemanagerEvan Prodromou
2009-07-03add _queueName functionEvan Prodromou
2009-07-02more logging in stompqueuemanagerEvan Prodromou
2009-07-01add fail() method to stompqueuemanagerEvan Prodromou
2009-07-01save frames for StompQueueManagerEvan Prodromou
2009-06-28start of queuemanager codeEvan Prodromou