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app.js
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app.js
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/* Copyright IBM Corp. 2015
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*jshint node:true*/
'use strict';
var express = require('express'),
app = express(),
mongoose = require('mongoose'),
cfenv = require('cfenv'),
watson = require('watson-developer-cloud'),
TwitterHelper = require('./app/util/twitter-helper');
// Set up environment variables
// cfenv provides access to your Cloud Foundry environment
var vcapLocal = null
try {
vcapLocal = require("./vcap-local.json")
}
catch (e) {}
var appEnvOpts = vcapLocal ? {vcap:vcapLocal} : {}
var appEnv = cfenv.getAppEnv(appEnvOpts);
// Load Mongoose Schemas
require('./app/models/profile');
require('./app/models/user');
require('./app/models/hashtag');
require('./app/models/image');
// Mongoose by default sets the auto_reconnect option to true.
// Recommended a 30 second connection timeout because it allows for
// plenty of time in most operating environments.
var mongoURL,
mongoCreds = getServiceCreds(appEnv, 'runkeeper-mongo-db');
if (appEnv.isLocal)
mongoURL = mongoCreds.uri;
else {
mongoURL = 'mongodb://' +
mongoCreds.user + ':' +
mongoCreds.password + '@' +
mongoCreds.uri + ':' +
mongoCreds.port + '/runkeeperDB';
}
var connect = function () {
console.log('connect-to-mongodb');
var options = {
server: { socketOptions: { keepAlive: 1, connectTimeoutMS: 30000 } },
replset: { socketOptions: { keepAlive: 1, connectTimeoutMS : 30000 } }
};
mongoose.connect(mongoURL, options);
};
connect();
mongoose.connection.on('error', console.log.bind(console, 'mongoose-connection-error:'));
mongoose.connection.on('open', console.log.bind(console,'connect-to-mongodb'));
mongoose.connection.on('disconnected', connect);
// Bootstrap application settings
require('./config/express')(app);
// Create the twitter helper
var twitterInstances = [],
twitterCreds = getServiceCreds(appEnv, 'runkeeper-twitter');
twitterInstances.push(twitterCreds);
var twit = new TwitterHelper(twitterInstances);
// Create the personality insights service
var piCreds = getServiceCreds(appEnv, 'runkeeper-personality-insights');
piCreds.version = 'v2';
var personality_insights = new watson.personality_insights(piCreds);
// Make the services accessible to the router
app.set('json spaces', 2);
app.use(function(req,res,next){
req.twit = twit;
req.personality_insights = personality_insights;
next();
});
// Bootstrap routes
require('./app/routes/index')(app);
// Global error handler
require('./config/error-handler')(app);
// Deployment tracker
require("cf-deployment-tracker-client").track();
// Start listening for connections
app.listen(appEnv.port, function() {
console.log("server started at", appEnv.url);
});
// Retrieves service credentials for the input service
function getServiceCreds(appEnv, serviceName) {
var serviceCreds = appEnv.getServiceCreds(serviceName)
if (!serviceCreds) {
console.log("service " + serviceName + " not bound to this application");
return null;
}
return serviceCreds;
}