function db_maintenance_optimize_tables in DB Maintenance 7

Same name and namespace in other branches

1. 8.2 db_maintenance.module \db_maintenance_optimize_tables()
2. 5.2 db_maintenance.module \db_maintenance_optimize_tables()
3. 5 db_maintenance.module \db_maintenance_optimize_tables()
4. 6.2 db_maintenance.module \db_maintenance_optimize_tables()
5. 6 db_maintenance.module \db_maintenance_optimize_tables()

Perform the maintenance.

2 calls to db_maintenance_optimize_tables()

db_maintenance_cron in ./db_maintenance.module

Implements hook_cron().

db_maintenance_optimize_tables_page in ./db_maintenance.module

Callback page for manually optimizing tables.

File

./db_maintenance.module, line 148

Optimizes database tables during cron runs.

Code

function db_maintenance_optimize_tables() {
  global $databases;
  foreach ($databases as $db => $connection) {
    $db_name = $connection['default']['database'];
    $all_tables = variable_get('db_maintenance_all_tables', 0);
    if ($all_tables) {
      $config_tables = _db_maintenance_list_tables($db);
    }
    else {
      $config_tables = variable_get('db_maintenance_table_list_' . $db_name, NULL);
    }

    // Only proceed if tables are selected for this database.
    if (is_array($config_tables) && sizeof($config_tables) > 0) {
      foreach ($config_tables as $key => $table_name) {

        // Set the database to query.
        $previous = db_set_active($db);
        if (db_table_exists($table_name)) {

          // PDO doesn't replace table names with ? or :
          // db_table_exists and db_escape_table is redundant, but just doing both
          if (db_driver() == 'mysql') {
            try {
              db_query("OPTIMIZE TABLE {$table_name}")
                ->execute();
            } catch (Exception $e) {
              watchdog_exception('type', $e);
            }
          }
          elseif (db_driver() == 'pgsql') {
            try {
              db_query("VACUUM ANALYZE {$table_name}")
                ->execute();
            } catch (Exception $e) {
              watchdog_exception('type', $e);
            }
          }
        }
        else {
          watchdog('db_maintenance', '@table table in @db database was configured to be optimized but does not exist.', array(
            '@db' => $db_name,
            '@table' => $table_name,
          ), WATCHDOG_NOTICE);
        }

        // Return to the previously set database.
        db_set_active($previous);
        watchdog('db_maintenance', 'Optimized @table table in @db database.', array(
          '@db' => $db_name,
          '@table' => $table_name,
        ), WATCHDOG_DEBUG);
      }
      if (variable_get('db_maintenance_log', 0)) {
        $tables = implode(', ', $config_tables);
        watchdog('db_maintenance', 'Optimized tables in @db database: @tables', array(
          '@db' => $db_name,
          '@tables' => $tables,
        ), WATCHDOG_INFO);
      }
    }
  }
  variable_set('db_maintenance_cron_last', REQUEST_TIME);
}