mongodb_watchdog.install in MongoDB 7

MongoDB watchdog install file.

File

mongodb_watchdog/mongodb_watchdog.install

<?php

/**
 * @file
 * MongoDB watchdog install file.
 */

/**
 * Implements hook_install().
 */
function mongodb_watchdog_install() {
  mongodb_watchdog_ensure_indexes();
}

/**
 * Implements hook_enable().
 */
function mongodb_watchdog_enable() {
  mongodb_watchdog_ensure_indexes();
}

/**
 * Implements hook_uninstall().
 *
 * Drop /all/ the watchdog collections.
 */
function mongodb_watchdog_uninstall() {

  // This can happen if mongodb.module has already been disabled prior to
  // uninstalling mongodb_watchdog.
  if (!module_exists('mongodb')) {
    drupal_load('module', 'mongodb');
  }

  // Drop the base watchdog collection.
  $watchdog_name = variable_get('mongodb_watchdog', 'watchdog');
  $watchdog = mongodb_collection($watchdog_name);
  $watchdog
    ->drop();

  // Then drop all watchdog event collections in all known database aliases.
  $aliases = variable_get('mongodb_connections', array());
  $aliases['default'] = TRUE;
  $count = 0;
  $regex = '/\\.watchdog_event_[[:xdigit:]]{32}$/';
  foreach (array_keys($aliases) as $alias) {
    $db = mongodb($alias);
    foreach ($db
      ->listCollections() as $collection) {
      if (preg_match($regex, $collection)) {
        $collection
          ->drop();
        $count++;
      }
    }
  }
  if ($count) {
    drupal_set_message(format_plural($count, 'Dropped 1 watchdog collection', 'Dropped @count watchdog collections'));
  }
  variable_del('mongodb_watchdog');
  variable_del('mongodb_watchdog_items');
}

/**
 * Create an index for the watchdog table.
 *
 * This index is on <line, timestamp> instead of <function, line, timestamp>,
 * because we write to this collection alot, and the smaller index on two
 * numbers should be much faster to create than one with a string included.
 */
function mongodb_watchdog_ensure_indexes() {
  $collection = mongodb_collection(variable_get('mongodb_watchdog', 'watchdog'));

  // Index for adding/updating increments.
  $index = array(
    'line' => 1,
    'timestamp' => -1,
  );
  $collection
    ->ensureIndex($index);

  // Index for admin page without filters.
  $index = array(
    'timestamp' => -1,
  );
  $collection
    ->ensureIndex($index);

  // Index for admin page filtering by type.
  $index = array(
    'type' => 1,
    'timestamp' => -1,
  );
  $collection
    ->ensureIndex($index);

  // Index for admin page filtering by severity.
  $index = array(
    'severity' => 1,
    'timestamp' => -1,
  );
  $collection
    ->ensureIndex($index);

  // Index for admin page filtering by type and severity.
  $index = array(
    'type' => 1,
    'severity' => 1,
    'timestamp' => -1,
  );
  $collection
    ->ensureIndex($index);
}

/**
 * Changes a variable name that defines a collection to store events.
 */
function mongodb_watchdog_update_7000() {
  $collection_name = variable_get('mongodb_collectionname', 'watchdog');
  if ($collection_name !== 'watchdog') {
    variable_set('mongodb_watchdog', $collection_name);
  }
  variable_del('mongodb_collectionname');
  variable_del('mongodb_watchdog_collectionname');
}

Functions

Name	Description
mongodb_watchdog_enable	Implements hook_enable().
mongodb_watchdog_ensure_indexes	Create an index for the watchdog table.
mongodb_watchdog_install	Implements hook_install().
mongodb_watchdog_uninstall	Implements hook_uninstall().
mongodb_watchdog_update_7000	Changes a variable name that defines a collection to store events.