service-router/test/router-test.js

router to bounce requests to either api or web servers

var http = require('http');
var inspect = require('eyespect').inspector();
var assert = require('assert');
var should = require('should');
var request = require('request');
var path = require('path');
var fs = require('fs');
var seaport = require('seaport');
var configFilePath = path.join(__dirname, 'local_config.json');
var config = require('docparse-config')(configFilePath);
var configFileExists = fs.existsSync(configFilePath);
assert.ok(configFileExists, 'config json file not found at path: ' + configFilePath);
describe('Docparse router', function() {
  var router;
  it('should start router', function(done) {
    router = require('../index')(config);
    should.exist(router,'router server not returned');
    done();
  });

  it('should return 500 status code for unavailable service', function(done) {
    var url = 'http://localhost:' + config.get('application:port') + '/api/test';
    var opts = {
      json: true,
      url: url
    }
    request(opts, function (err, res, body) {
      should.not.exist(err);
      res.statusCode.should.eql(500);
      body.should.have.property('message');
      body.should.have.property('error');
      body.error.should.eql('no hosts available');
      done();
    });
  });

  it('should bounce to api service', function(done) {
    // register an "api" service
    createApiServer(router, function (err) {
      should.not.exist(err)

      var url = 'http://localhost:' + config.get('application:port') + '/api/test';
      var opts = {
        json: true,
        url: url
      }
      request(opts, function (err, res, body) {
        should.not.exist(err);
        res.statusCode.should.eql(200);
        body.should.eql('Hello API World')
        done();
      });
    });
  });

  it('should bounce to web service', function(done) {
    // register an "api" service
    createWebServer(router, function (err) {
      should.not.exist(err)

      var url = 'http://localhost:' + config.get('application:port') + '/';
      var opts = {
        json: true,
        url: url
      }
      request(opts, function (err, res, body) {
        should.not.exist(err);
        res.statusCode.should.eql(200);
        body.should.eql('Hello Web World')
        done();
      });
    });
  });


});

function createWebServer(router, cb) {
  // Configure our HTTP server to respond with Hello World to all requests.
  var server = http.createServer(function (request, response) {
    response.writeHead(200, {"Content-Type": "text/plain"});
    response.end("Hello Web World");
  });
  var ports = seaport.connect(config.get('seaport:host'), config.get('seaport:port'));
  var service_name = 'web'
  var service_version = '0.0.1'
  // the semver service name to register with seaport when this server spins up
  var service = service_name + '@' + service_version;
  var port = ports.register(service_name)
  server.listen(port, function (err, reply) {
    router.on('register', function(service) {
      var role = service.role;
      if (role === 'web') {
        cb();
      }
    });
  });
}

function createApiServer(router, cb) {
  // Configure our HTTP server to respond with Hello World to all requests.
  var server = http.createServer(function (request, response) {
    response.writeHead(200, {"Content-Type": "text/plain"});
    response.end("Hello API World");
  });
  var ports = seaport.connect(config.get('seaport:host'), config.get('seaport:port'));
  var service_name = 'api'
  var service_version = '0.0.1'
  // the semver service name to register with seaport when this server spins up
  var service = service_name + '@' + service_version;
  var port = ports.register(service_name)
  server.listen(port, function (err, reply) {
    router.on('register', function(service) {
      var role = service.role;
      if (role === 'api') {
        cb();
      }
    });
  });
}