text: var Contextify = require("contextify");
  var request = require("request");
  
  exports = module.exports = function(check, callback){
      request({
          url: check.resource,
          timeout: 8000
      }, function(err, response, body) {
          var sandbox = Contextify();
          
          sandbox.err = err;
          sandbox.response = response || {};
          sandbox.body = body || "";
          
          var status = sandbox.run(check.condition);
          sandbox.dispose();
          
          process.nextTick(function() {
             callback(null, status); 
          });
      });
  };