Version 1

[yaffs-website] / web / core / modules / dblog / dblog.module

diff --git a/web/core/modules/dblog/dblog.module b/web/core/modules/dblog/dblog.module
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+++ b/web/core/modules/dblog/dblog.module
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+<?php
+
+/**
+ * @file
+ * System monitoring and logging for administrators.
+ *
+ * The Database Logging module monitors your site and keeps a list of recorded
+ * events containing usage and performance data, errors, warnings, and similar
+ * operational information.
+ */
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\Core\StringTranslation\TranslatableMarkup;
+
+/**
+ * Implements hook_help().
+ */
+function dblog_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    case 'help.page.dblog':
+      $output = '';
+      $output .= '<h3>' . t('About') . '</h3>';
+      $output .= '<p>' . t('The Database Logging module logs system events in the Drupal database. For more information, see the <a href=":dblog">online documentation for the Database Logging module</a>.', [':dblog' => 'https://www.drupal.org/documentation/modules/dblog']) . '</p>';
+      $output .= '<h3>' . t('Uses') . '</h3>';
+      $output .= '<dl>';
+      $output .= '<dt>' . t('Monitoring your site') . '</dt>';
+      $output .= '<dd>' . t('The Database Logging module allows you to view an event log on the <a href=":dblog">Recent log messages</a> page. The log is a chronological list of recorded events containing usage data, performance data, errors, warnings and operational information. Administrators should check the log on a regular basis to ensure their site is working properly.', [':dblog' => \Drupal::url('dblog.overview')]) . '</dd>';
+      $output .= '<dt>' . t('Debugging site problems') . '</dt>';
+      $output .= '<dd>' . t('In case of errors or problems with the site, the <a href=":dblog">Recent log messages</a> page can be useful for debugging, since it shows the sequence of events. The log messages include usage information, warnings, and errors.', [':dblog' => \Drupal::url('dblog.overview')]) . '</dd>';
+      $output .= '</dl>';
+      return $output;
+
+    case 'dblog.overview':
+      return '<p>' . t('The Database Logging module logs system events in the Drupal database. Monitor your site or debug site problems on this page.') . '</p>';
+  }
+}
+
+/**
+ * Implements hook_menu_links_discovered_alter().
+ */
+function dblog_menu_links_discovered_alter(&$links) {
+  if (\Drupal::moduleHandler()->moduleExists('search')) {
+    $links['dblog.search'] = [
+      'title' => new TranslatableMarkup('Top search phrases'),
+      'route_name' => 'dblog.search',
+      'description' => new TranslatableMarkup('View most popular search phrases.'),
+      'parent' => 'system.admin_reports',
+    ];
+  }
+
+  return $links;
+}
+
+/**
+ * Implements hook_cron().
+ *
+ * Controls the size of the log table, paring it to 'dblog_row_limit' messages.
+ */
+function dblog_cron() {
+  // Cleanup the watchdog table.
+  $row_limit = \Drupal::config('dblog.settings')->get('row_limit');
+
+  // For row limit n, get the wid of the nth row in descending wid order.
+  // Counting the most recent n rows avoids issues with wid number sequences,
+  // e.g. auto_increment value > 1 or rows deleted directly from the table.
+  if ($row_limit > 0) {
+    $min_row = db_select('watchdog', 'w')
+      ->fields('w', ['wid'])
+      ->orderBy('wid', 'DESC')
+      ->range($row_limit - 1, 1)
+      ->execute()->fetchField();
+
+    // Delete all table entries older than the nth row, if nth row was found.
+    if ($min_row) {
+      db_delete('watchdog')
+        ->condition('wid', $min_row, '<')
+        ->execute();
+    }
+  }
+}
+
+/**
+ * Gathers a list of uniquely defined database log message types.
+ *
+ * @return array
+ *   List of uniquely defined database log message types.
+ */
+function _dblog_get_message_types() {
+  return db_query('SELECT DISTINCT(type) FROM {watchdog} ORDER BY type')
+    ->fetchAllKeyed(0, 0);
+}
+
+/**
+ * Implements hook_form_FORM_ID_alter() for system_logging_settings().
+ */
+function dblog_form_system_logging_settings_alter(&$form, FormStateInterface $form_state) {
+  $row_limits = [100, 1000, 10000, 100000, 1000000];
+  $form['dblog_row_limit'] = [
+    '#type' => 'select',
+    '#title' => t('Database log messages to keep'),
+    '#default_value' => \Drupal::configFactory()->getEditable('dblog.settings')->get('row_limit'),
+    '#options' => [0 => t('All')] + array_combine($row_limits, $row_limits),
+    '#description' => t('The maximum number of messages to keep in the database log. Requires a <a href=":cron">cron maintenance task</a>.', [':cron' => \Drupal::url('system.status')])
+  ];
+
+  $form['#submit'][] = 'dblog_logging_settings_submit';
+}
+
+/**
+ * Form submission handler for system_logging_settings().
+ *
+ * @see dblog_form_system_logging_settings_alter()
+ */
+function dblog_logging_settings_submit($form, FormStateInterface $form_state) {
+  \Drupal::configFactory()->getEditable('dblog.settings')->set('row_limit', $form_state->getValue('dblog_row_limit'))->save();
+}