200 lines
8.2 KiB
Plaintext
200 lines
8.2 KiB
Plaintext
<?php
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/**
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* @file
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* System monitoring and logging for administrators.
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*
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* The Database Logging module monitors your site and keeps a list of recorded
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* events containing usage and performance data, errors, warnings, and similar
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* operational information.
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*/
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use Drupal\Core\Form\FormStateInterface;
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use Drupal\Core\Routing\RouteMatchInterface;
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use Drupal\Core\StringTranslation\TranslatableMarkup;
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use Drupal\views\ViewEntityInterface;
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use Drupal\views\ViewExecutable;
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/**
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* Implements hook_help().
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*/
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function dblog_help($route_name, RouteMatchInterface $route_match) {
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switch ($route_name) {
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case 'help.page.dblog':
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$output = '';
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$output .= '<h3>' . t('About') . '</h3>';
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$output .= '<p>' . t('The Database Logging module logs system events in the Drupal database. For more information, see the <a href=":dblog">online documentation for the Database Logging module</a>.', [':dblog' => 'https://www.drupal.org/documentation/modules/dblog']) . '</p>';
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$output .= '<h3>' . t('Uses') . '</h3>';
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$output .= '<dl>';
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$output .= '<dt>' . t('Monitoring your site') . '</dt>';
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$output .= '<dd>' . t('The Database Logging module allows you to view an event log on the <a href=":dblog">Recent log messages</a> page. The log is a chronological list of recorded events containing usage data, performance data, errors, warnings and operational information. Administrators should check the log on a regular basis to ensure their site is working properly.', [':dblog' => \Drupal::url('dblog.overview')]) . '</dd>';
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$output .= '<dt>' . t('Debugging site problems') . '</dt>';
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$output .= '<dd>' . t('In case of errors or problems with the site, the <a href=":dblog">Recent log messages</a> page can be useful for debugging, since it shows the sequence of events. The log messages include usage information, warnings, and errors.', [':dblog' => \Drupal::url('dblog.overview')]) . '</dd>';
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$output .= '</dl>';
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return $output;
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case 'dblog.overview':
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return '<p>' . t('The Database Logging module logs system events in the Drupal database. Monitor your site or debug site problems on this page.') . '</p>';
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}
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}
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/**
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* Implements hook_menu_links_discovered_alter().
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*/
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function dblog_menu_links_discovered_alter(&$links) {
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if (\Drupal::moduleHandler()->moduleExists('search')) {
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$links['dblog.search'] = [
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'title' => new TranslatableMarkup('Top search phrases'),
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'route_name' => 'dblog.search',
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'description' => new TranslatableMarkup('View most popular search phrases.'),
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'parent' => 'system.admin_reports',
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];
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}
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return $links;
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}
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/**
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* Implements hook_cron().
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*
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* Controls the size of the log table, paring it to 'dblog_row_limit' messages.
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*/
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function dblog_cron() {
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// Cleanup the watchdog table.
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$row_limit = \Drupal::config('dblog.settings')->get('row_limit');
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// For row limit n, get the wid of the nth row in descending wid order.
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// Counting the most recent n rows avoids issues with wid number sequences,
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// e.g. auto_increment value > 1 or rows deleted directly from the table.
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if ($row_limit > 0) {
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$min_row = db_select('watchdog', 'w')
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->fields('w', ['wid'])
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->orderBy('wid', 'DESC')
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->range($row_limit - 1, 1)
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->execute()->fetchField();
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// Delete all table entries older than the nth row, if nth row was found.
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if ($min_row) {
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db_delete('watchdog')
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->condition('wid', $min_row, '<')
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->execute();
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}
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}
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}
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/**
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* Gathers a list of uniquely defined database log message types.
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*
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* @return array
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* List of uniquely defined database log message types.
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*/
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function _dblog_get_message_types() {
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return db_query('SELECT DISTINCT(type) FROM {watchdog} ORDER BY type')
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->fetchAllKeyed(0, 0);
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}
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/**
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* Implements hook_form_FORM_ID_alter() for system_logging_settings().
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*/
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function dblog_form_system_logging_settings_alter(&$form, FormStateInterface $form_state) {
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$row_limits = [100, 1000, 10000, 100000, 1000000];
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$form['dblog_row_limit'] = [
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'#type' => 'select',
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'#title' => t('Database log messages to keep'),
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'#default_value' => \Drupal::configFactory()->getEditable('dblog.settings')->get('row_limit'),
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'#options' => [0 => t('All')] + array_combine($row_limits, $row_limits),
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'#description' => t('The maximum number of messages to keep in the database log. Requires a <a href=":cron">cron maintenance task</a>.', [':cron' => \Drupal::url('system.status')]),
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];
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$form['#submit'][] = 'dblog_logging_settings_submit';
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}
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/**
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* Form submission handler for system_logging_settings().
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*
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* @see dblog_form_system_logging_settings_alter()
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*/
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function dblog_logging_settings_submit($form, FormStateInterface $form_state) {
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\Drupal::configFactory()->getEditable('dblog.settings')->set('row_limit', $form_state->getValue('dblog_row_limit'))->save();
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}
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/**
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* Implements hook_ENTITY_TYPE_presave() for views entities.
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*
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* This hook ensures there are no views based that are using a wrong plugin for
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* wid and uid fields on views that use watchdog as base table.
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*
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* @deprecated in Drupal 8.4.x and will be removed before 9.0.0.
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*
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* @see https://www.drupal.org/node/2876378
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*/
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function dblog_view_presave(ViewEntityInterface $view) {
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// Only interested in watchdog based views.
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if ($view->get('base_table') != 'watchdog') {
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return;
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}
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$displays = $view->get('display');
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$update = FALSE;
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foreach ($displays as $display_name => $display) {
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// Iterate through all the fields of watchdog views based tables.
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if (isset($display['display_options']['fields'])) {
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foreach ($display['display_options']['fields'] as $field_name => $field) {
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// We are only interested in wid and uid fields from the watchdog table
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// that still use the numeric id.
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if (isset($field['table']) &&
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$field['table'] === 'watchdog' &&
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$field['plugin_id'] == 'numeric' &&
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in_array($field['field'], ['wid', 'uid'], TRUE)) {
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$displays[$display_name]['display_options']['fields'][$field_name]['plugin_id'] = 'standard';
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// Delete all the attributes related to numeric fields.
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unset(
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$displays[$display_name]['display_options']['fields'][$field_name]['set_precision'],
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$displays[$display_name]['display_options']['fields'][$field_name]['precision'],
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$displays[$display_name]['display_options']['fields'][$field_name]['decimal'],
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$displays[$display_name]['display_options']['fields'][$field_name]['separator'],
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$displays[$display_name]['display_options']['fields'][$field_name]['format_plural'],
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$displays[$display_name]['display_options']['fields'][$field_name]['format_plural_string'],
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$displays[$display_name]['display_options']['fields'][$field_name]['prefix'],
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$displays[$display_name]['display_options']['fields'][$field_name]['suffix']
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);
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$update = TRUE;
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@trigger_error("The numeric plugin for watchdog.$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);
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}
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}
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}
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// Iterate all filters looking for type filters to update.
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if (isset($display['display_options']['filters'])) {
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foreach ($display['display_options']['filters'] as $filter_name => $filter) {
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if (isset($filter['table']) &&
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$filter['table'] === 'watchdog' &&
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$filter['plugin_id'] == 'in_operator' &&
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$filter['field'] == 'type') {
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$displays[$display_name]['display_options']['filters'][$filter_name]['plugin_id'] = 'dblog_types';
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$update = TRUE;
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@trigger_error("The in_operator plugin for watchdog.type filter is deprecated in Drupal 8.4.0 and will be removed before Drupal 9.0.0. Must use dblog_types plugin instead. See https://www.drupal.org/node/2876378.", E_USER_DEPRECATED);
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}
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}
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}
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}
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if ($update) {
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$view->set('display', $displays);
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}
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}
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/**
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* Implements hook_views_pre_render().
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*/
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function dblog_views_pre_render(ViewExecutable $view) {
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if (isset($view) && ($view->storage->get('base_table') == 'watchdog')) {
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$view->element['#attached']['library'][] = 'dblog/drupal.dblog';
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}
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}
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