Unverified Commit a1f442e6 authored by Alex Pott's avatar Alex Pott
Browse files

Issue #2800605 by Chi, Wim Leers, dhirendra.mishra, mr.baileys, jhedstrom,... 

Issue #2800605 by Chi, Wim Leers, dhirendra.mishra, mr.baileys, jhedstrom, dawehner, borisson_, catch, alexpott: Warn/inform users when the hosting environment has a too low limit of APCU cache

(cherry picked from commit cee0a334)
parent 75ada804

core/modules/system/system.install

+41 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 
 */



use Drupal\Component\FileSystem\FileSystem as FileSystemComponent;

use Drupal\Component\Utility\Bytes;

use Drupal\Component\Utility\Crypt;

use Drupal\Component\Utility\Environment;

use Drupal\Component\Utility\OpCodeCache;
@@ -311,6 +312,46 @@ function system_requirements($phase) { 
    $requirements['php_opcache']['title'] = t('PHP OPcode caching');

  }



  // Check to see if APCu is installed and configured correctly.

  if ($phase == 'runtime' && PHP_SAPI != 'cli') {

    $requirements['php_apcu']['title'] = t('PHP APCu caching');

    if (extension_loaded('apcu') && filter_var(ini_get('apc.enabled'), FILTER_VALIDATE_BOOLEAN)) {

      $memory_info = apcu_sma_info(TRUE);

      $apcu_actual_size = format_size($memory_info['seg_size']);

      $apcu_recommended_size = '32 MB';

      $requirements['php_apcu']['value'] = t('Enabled (@size)', ['@size' => $apcu_actual_size]);

      if (Bytes::toInt($apcu_actual_size) < Bytes::toInt($apcu_recommended_size)) {

        $requirements['php_apcu']['severity'] = REQUIREMENT_WARNING;

        $requirements['php_apcu']['description'] = t('Depending on your configuration, Drupal can run with a @apcu_size APCu limit. However, a @apcu_default_size APCu limit (the default) or above is recommended, especially if your site uses additional custom or contributed modules.', [

          '@apcu_size' => $apcu_actual_size,

          '@apcu_default_size' => $apcu_recommended_size,

        ]);

      }

      else {

        $memory_available = $memory_info['avail_mem'] / $memory_info['seg_size'];

        if ($memory_available < 0.1) {

          $requirements['php_apcu']['severity'] = REQUIREMENT_ERROR;

        }

        elseif ($memory_available < 0.25) {

          $requirements['php_apcu']['severity'] = REQUIREMENT_WARNING;

        }

        else {

          $requirements['php_apcu']['severity'] = REQUIREMENT_OK;

        }

        $requirements['php_apcu']['description'] = t('Memory available: @available.', [

          '@available' => format_size($memory_info['avail_mem']),

        ]);

      }

    }

    else {

      $requirements['php_apcu'] += [

        'value' => t('Not enabled'),

        'severity' => REQUIREMENT_INFO,

        'description' => t('PHP APCu caching can improve your site\'s performance considerably. It is <strong>highly recommended</strong> to have <a href="https://www.php.net/manual/apcu.installation.php" target="_blank">APCu</a> installed on your server.'),

      ];

    }

  }



  if ($phase != 'update') {

    // Test whether we have a good source of random bytes.

    $requirements['php_random_bytes'] = [