ec145b73fc
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
117 lines
3.7 KiB
PHP
117 lines
3.7 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Monitoring output helper for IoMaster and IoManager/QueueManager
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category QueueManager
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* @package StatusNet
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* @author Brion Vibber <brion@status.net>
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* @copyright 2010 StatusNet, Inc.
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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class QueueMonitor
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{
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protected $monSocket = null;
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/**
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* Increment monitoring statistics for a given counter, if configured.
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* Only explicitly listed thread/site/queue owners will be incremented.
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*
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* @param string $key counter name
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* @param array $owners list of owner keys like 'queue:jabber' or 'site:stat01'
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*/
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public function stats($key, $owners=array())
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{
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$this->ping(array('counter' => $key,
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'owners' => $owners));
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}
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/**
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* Send thread state update to the monitoring server, if configured.
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*
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* @param string $thread ID (eg 'generic.1')
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* @param string $state ('init', 'queue', 'shutdown' etc)
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* @param string $substate (optional, eg queue name 'omb' 'sms' etc)
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*/
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public function logState($threadId, $state, $substate='')
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{
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$this->ping(array('thread_id' => $threadId,
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'state' => $state,
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'substate' => $substate,
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'ts' => microtime(true)));
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}
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/**
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* General call to the monitoring server
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*/
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protected function ping($data)
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{
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$target = common_config('queue', 'monitor');
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if (empty($target)) {
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return;
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}
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$data = $this->prepMonitorData($data);
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if (substr($target, 0, 4) == 'udp:') {
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$this->pingUdp($target, $data);
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} else if (substr($target, 0, 5) == 'http:') {
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$this->pingHttp($target, $data);
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} else {
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common_log(LOG_ERR, __METHOD__ . ' unknown monitor target type ' . $target);
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}
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}
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protected function pingUdp($target, $data)
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{
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if (!$this->monSocket) {
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$this->monSocket = stream_socket_client($target, $errno, $errstr);
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}
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if ($this->monSocket) {
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$post = http_build_query($data, '', '&');
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stream_socket_sendto($this->monSocket, $post);
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} else {
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common_log(LOG_ERR, __METHOD__ . " UDP logging fail: $errstr");
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}
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}
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protected function pingHttp($target, $data)
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{
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$client = new HTTPClient();
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$result = $client->post($target, array(), $data);
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if (!$result->isOk()) {
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common_log(LOG_ERR, __METHOD__ . ' HTTP ' . $result->getStatus() .
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': ' . $result->getBody());
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}
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}
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protected function prepMonitorData($data)
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{
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#asort($data);
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#$macdata = http_build_query($data, '', '&');
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#$key = 'This is a nice old key';
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#$data['hmac'] = hash_hmac('sha256', $macdata, $key);
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return $data;
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}
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}
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