upbeat/lib/upbeat/www/routes/services.ms

Fast health and performance monitoring with process handling

var OK = 200;
var NOTOK = 500;

module.exports = #(app, upbeat) {
  function getService(req, res, cb) {
    var service = upbeat.getService(req.params.service);
    if (! service) {
      res.send("Service not found", 404);
      return false;
    } else {
      return service
    }
  }

  // service landing page
  app.get('/services/:service.:format?', #(req, res, next) {
    var service = getService(req, res);
    var period  = req.query.period || 'min';

    if (req.params.format == 'json') {
      var payload = service.payload(period);
      res.contentType('json');
      res.send(JSON.stringify(payload));
    } else {
      if (service) res.render('service', { service: service });
    }
  });

  // service actions times
  app.get('/services/:service/actions/:action.:format?', #(req, res, next) {
    var service = getService(req, res);
    if (service) {
      var period = 'day';
      var action = service.actionHash[req.params.action];
      if (req.params.format == 'json') {
        res.contentType('json');
        var ret = {
          meta: {
            uptime: action.meta.uptime(period),
            downtime: action.meta.downtime(period),
            avgRespTime: action.meta.averageResponseTime(period),
            interval: action.interval,
            timeout:  action.timeout,
            passes: action.meta.total('passed-count'),
            failures: action.meta.total('failed-count'),
            errorHistory: action.meta.errorHistory
          },

          responseTimes: action.meta.plotResponseTimes('min')
        };

        res.send(JSON.stringify(ret));
      }

      else {
        res.render('action', { action: action, service: service });
      }
    }
  });

  app.get('/services/:service/health', #(req, res, next) {
    var service = getService(req, res);
    if (service) {
      if (service.up) {
        res.send("Healthy", OK);
      } else {
        res.send("Unhealthy", NOTOK);
      }
    }
  });

};