function performance_requirements in Performance Logging and Monitoring 7

Same name and namespace in other branches

1. 6.2 performance.install \performance_requirements()
2. 6 performance.install \performance_requirements()
3. 7.2 performance.install \performance_requirements()

Implementation of hook_requirements().

File

./performance.install, line 83

Install and update for Performance Logging

Code

function performance_requirements($phase) {
  $requirements = array();
  if ($phase != 'runtime') {
    return $requirements;
  }
  if (variable_get('performance_detail', 0)) {
    $requirements['performance_detail'] = array(
      'title' => t('Performance logging details'),
      'value' => t('Enabled'),
      'severity' => REQUIREMENT_WARNING,
      'description' => t('Performance detailed logging is !link. This can cause severe issues on live sites.', array(
        '!link' => l(t('enabled'), PERFORMANCE_SETTINGS),
      )),
    );
  }
  $logging = FALSE;
  foreach (performance_data_stores() as $data) {
    if ($data['#enabled']) {
      $logging = TRUE;
      break;
    }
  }
  if (variable_get(PERFORMANCE_QUERY_VAR, 0) && $logging) {
    $requirements['performance_query'] = array(
      'title' => t('Performance logging query'),
      'value' => t('Enabled'),
      'severity' => REQUIREMENT_WARNING,
      'description' => t('Query timing and count logging is !link. This can cause memory size per page to be larger than normal.', array(
        '!link' => l(t('enabled'), PERFORMANCE_SETTINGS),
      )),
    );
  }

  // Since these checks are done at runtime, performance_data_stores() is
  // available!
  $alt_cache = FALSE;
  foreach (performance_data_stores() as $store => $data) {
    if ($store != 'db' && $data['#enabled']) {
      $alt_cache = TRUE;
      break;
    }
  }
  if (!$alt_cache) {
    $requirements['performance_apc'] = array(
      'title' => t('Performance logging APC / memcache'),
      'value' => t('Disabled'),
      'severity' => REQUIREMENT_WARNING,
      'description' => t('Performance logging on live web sites works best if APC or Memcache is enabled.'),
    );
  }
  $shm_size = ini_get('apc.shm_size');
  if (function_exists('apc_fetch') && $shm_size < PERFORMANCE_MIN_MEMORY) {
    $requirements['performance_apc_mem'] = array(
      'title' => t('Performance logging APC memory size'),
      'value' => $shm_size,
      'severity' => REQUIREMENT_WARNING,
      'description' => t('APC has been configured for !size, which is less than the recommended !min_memory MB of memory. If you encounter errors when viewing the summary report, then try to increase that limit for APC.', array(
        '!size' => 1 * $shm_size,
        '!min_memory' => PERFORMANCE_MIN_MEMORY,
      )),
    );
  }
  return $requirements;
}