text: 'use strict'
  
  exports.run = function (ctx, done) {
    ctx.mysql.cluster.getConnection(function (err, connection) {
      function complete (err, res) {
        if (typeof connection !== 'undefined') {
          connection.release()
        }
        done(err, res)
      }
  
      if (err) {
        complete(err)
        return
      }
  
      connection.query('SELECT 1', complete)
    })
  }
  