Help:Embedded query update/Notes on the logging output

As part of the experimental status of the embedded query update feature, additional logging should be enabled to monitor the behavior of this feature.

Enable logging

To enable the logging add the following lines to the end of your "LocalSettings.php" file:

$wgDebugLogGroups  = array(
    'smw' => ".../tmp/logs/debug-smw-{$wgDBname}.log"
);

  Note: See the path indicated here as a suggestion.

Example output

An example output for the QueryDependencyLinksStore activities:

Shows that dependency have been updated to the QUERY_LINKS table

2015-11-05 16:53:29 ...: SMW\PropertyHierarchyLookup::findMatchesFor _SUBC and Imported_vocabulary
2015-11-05 16:53:29 ...: SMW\SQLStore\QueryDependencyLinksStore::updateDependencyList insert for SID 116
2015-11-05 18:55:07 ...: SMW\SQLStore\QueryDependencyLinksStore::updateDependencyList insert for SID 10016
2015-11-05 18:55:08 ...: SMW\SQLStore\QueryDependencyLinksStore::updateDependencyList insert for SID 10112

Shows that an invalidation took place ParserCachePurgeJob and that the DeferredRequestDispatcher returned with a status of wasCompleted = true and wasAccepted = true.

2015-11-09 05:02:29 ...: SMW\DeferredRequestDispatchManager: {"host":"localhost","port":8080,"path":"\/mw\/index.php\/Special:DeferredRequestDispatcher","responseMessage":"HTTP\/1.0 202 Accepted\r\n","followedLocation":false,"wasCompleted":true,"wasAccepted":true,"connectionFailure":0,"requestProcTime":0.22293996810913}
2015-11-09 05:02:29 ...: SMW\MediaWiki\Jobs\ParserCachePurgeJob::findQueryTargetLinksBatches counted: 7 | offset: 0  for TestQuery
2015-11-09 05:02:30 ...: SMW\SQLStore\QueryDependencyLinksStore::addDependencyList suppressed (skewed time) for SID 14521
2015-11-09 05:03:20 ...: SMW\SQLStore\QueryDependencyLinksStore::updateDependencyList insert for SID 113

Query and dependencies are removed from tracking.

2015-11-09 00:11:03 ...: SMW\SQLStore\QueryDependencyLinksStore::pruneOutdatedTargetLinks remove 14512
2015-11-09 00:11:04 ...: SMW\DeferredRequestDispatchManager: {"host":"localhost","port":8080,"path":"\/mw\/index.php\/Special:DeferredRequestDispatcher","responseMessage":"HTTP\/1.0 202 Accepted\r\n","wasCompleted":true,"wasAccepted":true,"connectionFailure":0,"requestProcTime":0.31431794166565}
2015-11-09 00:11:04 ...: SMW\MediaWiki\Jobs\ParserCachePurgeJob::findQueryTargetLinksBatches counted: 3 | offset: 0  for TestQuery