| // Copyright 2015 The Vanadium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| // pg-index=1 |
| |
| var inherits = require('util').inherits; |
| var vanadium = require('vanadium'); |
| |
| var fortune = require('../fortune'); |
| |
| /** |
| * 1) Implement a simple fortune service |
| */ |
| |
| function FortuneService() { |
| // List of fortunes |
| this.fortunes = []; |
| } |
| |
| inherits(FortuneService, fortune.Fortune); |
| |
| // Gets a random fortune |
| FortuneService.prototype.getRandomFortune = function(ctx, serverCall) { |
| var numExistingfortunes = this.fortunes.length; |
| if(numExistingfortunes === 0) { |
| throw new Error('Sorry! No fortune available :('); |
| } |
| var randomIndex = Math.floor(Math.random() * numExistingfortunes); |
| var fortune = this.fortunes[randomIndex]; |
| console.info('Serving:', fortune); |
| return Promise.resolve(fortune); |
| }; |
| |
| // Adds a new fortune |
| FortuneService.prototype.addNewFortune = function(ctx, serverCall, fortune) { |
| if(!fortune || fortune.trim() === '') { |
| throw new Error('Sorry! Can\'t add empty or null fortune!'); |
| } |
| console.info('Adding:', fortune); |
| this.fortunes.push(fortune); |
| return Promise.resolve(); |
| }; |
| |
| /** |
| * 2) Publish the fortune service |
| */ |
| |
| var fortuneService = new FortuneService(); |
| |
| // Create a Vanadium runtime using the configuration |
| vanadium.init().then(function(rt) { |
| var server = rt.newServer(); |
| // Serve the fortune server under a name. Serve returns a Promise object |
| server.serve('bakery/cookie/fortune', fortuneService).then(function() { |
| console.log('Fortune server serving under: bakery/cookie/fortune'); |
| }).catch(function(err) { |
| console.error('Failed to serve the fortune server because:\n', err); |
| process.exit(1); |
| }); |
| }).catch(function(err) { |
| console.error('Failed to start the fortune server because:\n', err); |
| process.exit(1); |
| }); |
| |
| // Let's add a few fortunes to start with |
| [ |
| 'The fortune you seek is in another cookie.', |
| 'Everything will now come your way.', |
| 'Conquer your fears or they will conquer you.' |
| ].forEach(function(fortune) { |
| fortuneService.addNewFortune(null, null, fortune); |
| }); |
