NEW DiagnosticsServiceInterface::filterInfo , ::filterOk , ::filterWarnings ::filterWarningsAndErrors, ::filterErrors
NEW DiagnosticsServiceInterface::toMessageList()
APIBREAK DiagnosticsServiceInterface::getRequirementsArray() becomes ::toRequirementsArray()

*IMPROVEMENT: Drupal's status report now only shows warning and error diagnostics.
*APIBREAK: Removed DiagnosticCheckInterface::getHookRequirementsArray() and DiagnosticsServiceInterface::getHookRequirementsArray().
*NEW: $floor parameter for filtering DiagnosticsServiceInterface::getRequirementsArray().
*NEW: $prefix_title parameter for hook_requirements() use of DiagnosticsServiceInterface::getRequirementsArray() output.

FIXED ::totalNumberOfItems() statistic mismatch: now runs a count on any empty (or full-claimed) queue, hopefully the slight performance penalty weighs up for the increased accuracy. Did timings with ~20000 queue items and never got over 0.3s.

Wim Leers authored Aug 13, 2017 and Niels van Mourik committed Aug 13, 2017

Issue #2805123 by slasher13, Wim Leers, nielsvm: Make UI tests pass on d.o's testbot: don't assume Drupal is installed in the root of a domain

Renamed new Drush p-procsr commands --> p-processor (since the newest Drush no longer breaks its help overview).

[queuestats] Renamed the new statistics slightly (failures -> failed, successes -> succeeded..) to bring it all in line with InvStatesInterface as we can all appreciate consistency.

[queuestats] New statistic TOTAL_PROCESSING, and no, this one has NOTHING to do with the processing that just got removed, its a whole different thing and the explanations make this clear.

[queuestats] Improved how Queue\QueueService maintains the statistics drastically, now StatsTracker::updateTotals() just takes a bunch of invalidation objects from the QueueService::commit* methods and figures out where to add up or subtract.

[queuestats] Ditching the claimed / processing statistic altogether as it turned out, that due to the efficient ::destruct() based storing mechanism of statistical data, this wasn't ever showing a number in real-life. And when it was, it probably was because PHP crashed down - so it created a big false sense of accuracy.

NEW QueueSizeDiagnosticCheck which warns after 30000 queue items and does a safety shutdown over 10000.

[queuestats] Drush p-queue-stats has much richer output and now has a --reset-totals switch. As a consequence, p-queue-empty no longer resets the total statistics but only the NUMBER_OF_ITEMS value also presented in the stats.

[queuestats] Each queue statistic now provides its own object, implementing the new ExplainedCounterInterface which returns t() calls with all the information in them. Bit more overhead, but all the more API-first and manageable.