Health Check

Simple and highly customisable JSON health check builder.

  npm install @mrporter/mrp-healthcheck --save

Teams using this package:

• PAC (Product Pages)
• CAP (Checkout)
• Team X (Product Listing)

var status = require('@mrporter/mrp-healthcheck');

var results = status({
  "name": "some-app",
  "checks": [
    {
      "name": "mr-porter product page",
      "url" : "http://mrporter.com"
    },
    {
      "name": "Google",
      "url" : "http://google.com"
    }
  ]

}).then( function(data) {
  // {JSON data}
})

Product Page Example:

/**
 * Class - healthMiddleware - executes healthcheck module for a given route
 *
 * @class healthMiddleware
 * @static
 * @example app.use('/health/check', require('@mrporter/mrp-healthcheck');
 */
module.exports = function(req, res) {

    var os = require('os');

    var appUrl = req.protocol + '://' + req.get('host');
    var build = rootRequire('build.json') || {};
    var results = require('@mrporter/mrp-healthcheck')({
        'name': 'Mr Porter Product Page',
        "uptimeSeconds": parseInt(process.uptime(), 10),
        'buildTime': build.buildTime,
        "env": req.app.settings.env, //set consistently by server.init
        "nodeVersion": process.versions.node,
        "buildNumber": build.tag,
        "buildUrl": "http://xyz/jenkins/job/CI-mrp_product-page/" + build.tag,
        "gitCommit": build.commit,
        "gitUrl": "http://xyz/product-page/commits/" + build.commit,
        "host": {
            "hostname": os.hostname(),
            "uptimeSeconds": parseInt(os.uptime(), 10)
        },
        "checks": [
            {
                'name': 'Check Product Page App',
                'url': appUrl
            },
            {
                'name': 'LAD API Product Details',
                'url': "http://xyz:80/categories?business=MRP&country=GB&lang=en"
            }
        ]

    });

    results.then(function(healthCheck) {
        res.json(healthCheck);
    });

};

Generic Output Example:

{
    "application": {
      "name": "My App",
    "bootTime": "2014-02-28T15:30:00Z",
    "buildTime": "2014-02-28T15:30:00Z",
    "uptimeSeconds": 300,
    "version": "1.0.0",
      "buildNumber": 55,
      "buildUrl": "http://jenkins01.vm.wtf.nap:8080/jenkins/job/CI-my-app/55/",
      "gitCommit": "860760dbba4e131209e458c61979895e5d51a8c4",
    "configuration": {
        // Application specific configuration
    },
    "metrics": {
        // Application specific metrics (request/second, etc)
    },
    "checks": [
            {
                "name": "mr-porter product page",
                "result": "FAILED", // SUCCESS, or FAILED
                "dateOfCheck": "2015-04-27T11:34:46.336Z",
            }
        ]
    },
    "host": {
      "currentTime": "2015-04-27T11:34:46.336Z",
      "bootTime": "2015-04-27T11:34:46.336Z",
    "uptimeSeconds": 300,
      "hostname": "dev-myApp"
    }
}