diff core/modules/dblog/dblog.module @ 0:c75dbcec494b

Initial commit from drush-created site

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/dblog/dblog.module	Thu Jul 05 14:24:15 2018 +0000
@@ -0,0 +1,199 @@
+<?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;
+use Drupal\views\ViewEntityInterface;
+use Drupal\views\ViewExecutable;
+
+/**
+ * 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();
+}
+
+/**
+ * Implements hook_ENTITY_TYPE_presave() for views entities.
+ *
+ * This hook ensures there are no views based that are using a wrong plugin for
+ * wid and uid fields on views that use watchdog as base table.
+ *
+ * @deprecated in Drupal 8.4.x and will be removed before 9.0.0.
+ *
+ * @see https://www.drupal.org/node/2876378
+ */
+function dblog_view_presave(ViewEntityInterface $view) {
+  // Only interested in watchdog based views.
+  if ($view->get('base_table') != 'watchdog') {
+    return;
+  }
+
+  $displays = $view->get('display');
+  $update = FALSE;
+  foreach ($displays as $display_name => $display) {
+
+    // Iterate through all the fields of watchdog views based tables.
+    if (isset($display['display_options']['fields'])) {
+      foreach ($display['display_options']['fields'] as $field_name => $field) {
+        // We are only interested in wid and uid fields from the watchdog table
+        // that still use the numeric id.
+        if (isset($field['table']) &&
+            $field['table'] === 'watchdog' &&
+            $field['plugin_id'] == 'numeric' &&
+            in_array($field['field'], ['wid', 'uid'], TRUE)) {
+
+          $displays[$display_name]['display_options']['fields'][$field_name]['plugin_id'] = 'standard';
+
+          // Delete all the attributes related to numeric fields.
+          unset(
+            $displays[$display_name]['display_options']['fields'][$field_name]['set_precision'],
+            $displays[$display_name]['display_options']['fields'][$field_name]['precision'],
+            $displays[$display_name]['display_options']['fields'][$field_name]['decimal'],
+            $displays[$display_name]['display_options']['fields'][$field_name]['separator'],
+            $displays[$display_name]['display_options']['fields'][$field_name]['format_plural'],
+            $displays[$display_name]['display_options']['fields'][$field_name]['format_plural_string'],
+            $displays[$display_name]['display_options']['fields'][$field_name]['prefix'],
+            $displays[$display_name]['display_options']['fields'][$field_name]['suffix']
+          );
+
+          $update = TRUE;
+          @trigger_error("The numeric plugin for watchdog.$field_name field is deprecated in Drupal 8.4.0 and will be removed before Drupal 9.0.0. Must use standard plugin instead. See https://www.drupal.org/node/2876378.", E_USER_DEPRECATED);
+        }
+      }
+    }
+
+    // Iterate all filters looking for type filters to update.
+    if (isset($display['display_options']['filters'])) {
+      foreach ($display['display_options']['filters'] as $filter_name => $filter) {
+        if (isset($filter['table']) &&
+            $filter['table'] === 'watchdog' &&
+            $filter['plugin_id'] == 'in_operator' &&
+            $filter['field'] == 'type') {
+
+          $displays[$display_name]['display_options']['filters'][$filter_name]['plugin_id'] = 'dblog_types';
+          $update = TRUE;
+          @trigger_error("The in_operator plugin for watchdog.type filter is deprecated in Drupal 8.4.0 and will be removed before Drupal 9.0.0. Must use dblog_types plugin instead. See https://www.drupal.org/node/2876378.", E_USER_DEPRECATED);
+        }
+      }
+    }
+  }
+
+  if ($update) {
+    $view->set('display', $displays);
+  }
+}
+
+/**
+ * Implements hook_views_pre_render().
+ */
+function dblog_views_pre_render(ViewExecutable $view) {
+  if (isset($view) && ($view->storage->get('base_table') == 'watchdog')) {
+    $view->element['#attached']['library'][] = 'dblog/drupal.dblog';
+  }
+}