VuFind SolrProbe

SolrProbe is copyright (c) 2022,2023 by Staats- und Universitätsbibliothek Hamburg and released under the terms of the GNU General Public License v3.

Description

SolrProbe hooks into VuFind's search system and collects information about the interaction with the search server. It gathers the following information:

• Backend identifier
• Name of the search command class
• Session identifier
• Request identifier
• Time when the .pre event triggered
• Time when the .post or .error event triggered
• Solr query time if available
• Request status ("OK" or the exception class name)
• Request status code ("200" or the exception code)
• VuFind URL that triggered to interaction

Usage

Attach the SolrProbe to the shared event manager during the Laminas MVC bootstrap event.

class Module {

    ...

    public function onBootStrap (MvcEvent $event) : void
    {
        $filename = sprintf('probe.log.%s', date('Y-m-d'));
        $logfile = fopen(__DIR__ . '/log/' . $filename, 'a');
        if ($logfile !== false) {
            $services = $event->getApplication()->getServiceManager();
            $events = $services->get('SharedEventManager');
            $handler = new SUBHH\VuFind\SolrProbe\LogfileHandler($logfile);
            $probe = new SUBHH\VuFind\SolrProbe\SolrProbe($handler);
            $probe->attach($events);
            register_shutdown_function([$probe, 'onEngineShutdown']);
    }

    ...
}

Authors

David Maus <david.maus@sub.uni-hamburg.de>