Revisiting Whats up, Watson – Using Watson’s Question and Answer with Bluemix – Part 2

In this I revisit the Bluemix app based on Watson’s Question and Answer service which I had posted in my earlier article “Whats up Watson? Using IBM Watson with Bluemix, NodeExpress – Part 1“. In this post I removed some redundant code and also added some additional checks to the Jade templates to handle responses to “focusless” questions viz. Am I…? or “Is X contagious?”

You can run the app at Whatsup Watson?

The code can be forked and cloned from Devops at Whatsup

The code is also available at GitHub at Whatsup

The section below briefly describes the details of the implementation of the WhatsupWatson app

A) app.js

In the app.js module the VCAP environment is parsed to get the credentials to use the Watson Question and Answer service as shown below

if (process.env.VCAP_SERVICES) {
  var VCAP_SERVICES = JSON.parse(process.env.VCAP_SERVICES);
  // retrieve the credential information from VCAP_SERVICES for Watson QAAPI
  hostname   = VCAP_SERVICES["question_and_answer"][0].name;               
  passwd = VCAP_SERVICES["question_and_answer"][0].credentials.password; 
  username = VCAP_SERVICES["question_and_answer"][0].credentials.username; 
  watson_url = VCAP_SERVICES["question_and_answer"][0].credentials.url;
}

There different ways of asking Watson questions. Watson’s response will vary depending on the options and parameters that are used to POST the question to Watson. This app uses a route for each ‘question type’ and option. These are

a. Simple Synchronous Query: Post a simple synchronous query to Watson

This is the simplest query that we can pose to Watson. Here we need to just include the text of the question and the also a Sync Timeout. The Sync Timeout denotes the time client will wait for responses from the Watson service

// Ask Watson a simple synchronous query
app.get('/question',question.list);
app.post('/simplesync',simplesync.list);

b. Evidence based question: Ask Watson to respond to evidence given to it

Ask Watson for responses based on evidence given like medical conditions etc.

// Ask Watson for responses based on evidence provided
app.get('/evidence',evidence.list);
app.post('/evidencereq',evidencereq.list);

c. Request for a specified set of answers to a question: Ask Watson to give a specified number of responses to a question

// Ask Watson to provide specified number of responses to a query
app.get('/items',items.list);
app.post('/itemsreq',itemsreq.list);

d. Get a formatted response to a question: Ask Watson to format the response to the question

// Get a formatted response from Watson for a query
app.get('/format',format.list);
app.post('/formatreq',formatreq.list);

To get started with Watson we would need to connect the Bluemix app to the Watson’s QAAPI as a service by parsing the environment variable. This is shown below

B) simplesync.js

The code in simplesync.js, evidencereq.js, itemsreq.js,formatreq.js are similar. The modules construct the question in the format required. The details of the implementation of simplesync.js is included below a. The Watson’s corpus will be set to ‘healthcare’

parts = url.parse(watson_url +'/v1/question/healthcare');

b. The POST headers are set

// Set the required headers for posting the REST query to Watson
headers = {'Content-Type'  :'application/json',
                  'X-synctimeout' : syncTimeout,
                  'Authorization' : "Basic " + new Buffer(username+":"+passwd).toString("base64")};

c. The POST request options are set

// Create the request options to POST our question to Watson
var options = {host: parts.hostname,
port: 443,
path: parts.pathname,
method: 'POST',
headers: headers,
rejectUnauthorized: false, // ignore certificates
requestCert: true,
agent: false};

The question that is to be asked of Watson needs to be formatted appropriately based on the input received in the appropriate form (for e.g. simplesync.jade)

// Get the values from the form
var syncTimeout = req.body.timeout;
var query = req.body.query;
// create the Question text to ask Watson
var question = {question : {questionText :query }};
var evidence = {"evidenceRequest":{"items":1,"profile":"yes"}};
// Set the POST body and send to Watson
req.write(JSON.stringify(question));
req.write("\n\n");
req.end();

Now you POST the Question to Watson and receive the stream of response using Node.js’ .on(‘data’,) & .on(‘end’) shown below

var req = https.request(options, function(result) {
result.setEncoding('utf-8');
// Retrieve and return the result back to the client
result.on(“data”, function(chunk) {
output += chunk;
});

result.on('end', function(chunk) {		  
           var answers = JSON.parse(output);
			      results = answers[0];
			      res.render(
					 'answer', {
                      "results":results
                                        
			   });
			
});

The results are parsed and formatted displayed using Jade. For the Jade templates I have used a combination of Jade and in-line HTML tags.

Included below is the part of the jade template with in-line HTML tagging

c) answer.jade

mplementation details of WhatsupWatsonapp

The section below briefly describes the details of the implementation of the WhatsupWatson app

A) app.js

In the app.js module the VCAP environment is parsed to get the credentials to use the Watson Question and Answer service as shown below

if (process.env.VCAP_SERVICES) {
  var VCAP_SERVICES = JSON.parse(process.env.VCAP_SERVICES);
  // retrieve the credential information from VCAP_SERVICES for Watson QAAPI
  hostname   = VCAP_SERVICES["question_and_answer"][0].name;               
  passwd = VCAP_SERVICES["question_and_answer"][0].credentials.password; 
  username = VCAP_SERVICES["question_and_answer"][0].credentials.username; 
  watson_url = VCAP_SERVICES["question_and_answer"][0].credentials.url;
}

a. Simple Synchronous Query: Post a simple synchronous query to Watson

// Ask Watson a simple synchronous query
app.get('/question',question.list);
app.post('/simplesync',simplesync.list);

b. Evidence based question: Ask Watson to respond to evidence given to it

Ask Watson for responses based on evidence given like medical conditions etc.

// Ask Watson for responses based on evidence provided
app.get('/evidence',evidence.list);
app.post('/evidencereq',evidencereq.list);

c. Request for a specified set of answers to a question: Ask Watson to give a specified number of responses to a question

// Ask Watson to provide specified number of responses to a query
app.get('/items',items.list);
app.post('/itemsreq',itemsreq.list);

d. Get a formatted response to a question: Ask Watson to format the response to the question

// Get a formatted response from Watson for a query
app.get('/format',format.list);
app.post('/formatreq',formatreq.list);

To get started with Watson we would need to connect the Bluemix app to the Watson’s QAAPI as a service by parsing the environment variable. This is shown below

B) simplesync.js

parts = url.parse(watson_url +'/v1/question/healthcare');

b. The POST headers are set

// Set the required headers for posting the REST query to Watson
headers = {'Content-Type'  :'application/json',
                  'X-synctimeout' : syncTimeout,
                  'Authorization' : "Basic " + new Buffer(username+":"+passwd).toString("base64")};

c. The POST request options are set

// Create the request options to POST our question to Watson
var options = {host: parts.hostname,
port: 443,
path: parts.pathname,
method: 'POST',
headers: headers,
rejectUnauthorized: false, // ignore certificates
requestCert: true,
agent: false};

The question that is to be asked of Watson needs to be formatted appropriately based on the input received in the appropriate form (for e.g. simplesync.jade)

// Get the values from the form
var syncTimeout = req.body.timeout;
var query = req.body.query;
// create the Question text to ask Watson
var question = {question : {questionText :query }};
var evidence = {"evidenceRequest":{"items":1,"profile":"yes"}};
// Set the POST body and send to Watson
req.write(JSON.stringify(question));
req.write("\n\n");
req.end();

Now you POST the Question to Watson and receive the stream of response using Node.js’ .on(‘data’,) & .on(‘end’) shown below

var req = https.request(options, function(result) {
result.setEncoding('utf-8');
// Retrieve and return the result back to the client
result.on(“data”, function(chunk) {
output += chunk;
});

result.on('end', function(chunk) {		  
           var answers = JSON.parse(output);
			      results = answers[0];
			      res.render(
					 'answer', {
                      "results":results
                                        
			   });
			
});

The results are parsed and formatted displayed using Jade. For the Jade templates I have used a combination of Jade and in-line HTML tags.

Included below is the part of the jade template with in-line HTML tagging

c) answer.jade

if results.question.qclasslist
    for result in results.question.qclasslist
      p <font color="blueviolet">  Value   = <font color="black "> #{result.value} </font> 
  if results.question.focuslist
    p <font color="blueviolet">  Focuslist  </font> = <font color="black "> #{results.question.focuslist[0].value} </font>
  if latlist
    p <font color="blueviolet">  Latlist  </font> = <font color="black "> #{results.question.latlist[0].value} </font>

Disclaimer: This article represents the author’s viewpoint only and doesn’t necessarily represent IBM’s positions, strategies or opinions


Find me on Google+

Spicing up a IBM Bluemix cloud app with MongoDB and NodeExpress

In this post I highlight the rudiments for a creating a cloud application on IBM’s PaaS offering Bluemix, using MongoDB and NodeExpress. Clearly Bluemix allows one to fire up a cloud application with a NoSQL database in a matter of a few hours which makes it really attractive. The NodeExpress application was initially created using Enide Studio for Node.js with a local Mongodb server running on my desktop. (Please see my post Elements of CRUD with Node Express and MongoDB) Once you have ironed out the issues in this local application you are ready to deploy on IBM Bluemix.

The code for this Bluemix application can be forked from bluemix-mongo from IBM Devops.

You can also clone the code from GitHub at bluemix-mongo

Here are the key changes that need to be made for running the NodeExpress Webserver with MongoDB as the backend DB

1) Webserver : Setup the port and host for the Webserver.

app.js

var port = (process.env.VCAP_APP_PORT || 1337); var host = (process.env.VCAP_APP_HOST || '0.0.0.0'); var app = express(); app.configure(function(){ app.set('port', port);

As seen above the host & port for the Webserver are obtained from the process.env variable.
2) Routes and Middleware
Setup the routes and invoke them appropriately in app.js
var express = require('express') , routes = require('./routes') , user = require('./routes/user') , userlist = require('./routes/userlist') , newuser = require('./routes/newuser') , adduser = require('./routes/adduser') , changeuser = require('./routes/changeuser') , updateuser = require('./routes/updateuser') , remuser = require('./routes/remuser') , deleteuser = require('./routes/deleteuser')

app.get('/users', user.list); app.get('/helloworld', routes.index); app.get('/userlist', userlist.list); app.get('/newuser', newuser.list); app.post('/adduser',adduser.list); app.get('/changeuser', changeuser.list); app.post('/updateuser', updateuser.list); app.get('/remuser', remuser.list); app.post('/deleteuser',deleteuser.list);

3) Initialize MongoDB database: Create a set of 3 records when the Webserver starts as follows

if (process.env.VCAP_SERVICES) { var env = JSON.parse(process.env.VCAP_SERVICES); if (env['mongodb-2.2']) { var mongo = env['mongodb-2.2'][0]['credentials']; } } else { var mongo = { "username" : "user1", "password" : "secret", "url" : "mongodb://user1:secret@localhost:27017/test" } } var MongoClient = mongodb.MongoClient; var db= MongoClient.connect(mongo.url, function(err, db) { if(err) { log("failed to connect to the database"); } else { log("connected to database"); } var collection = db.collection('phonebook'); //Clear DB and insert 3 records remove(mycallback); var user1 = { "FirstName" : "Tinniam", "LastName" : "Ganesh","Mobile": "916732177728" }; var user2 = { "FirstName" : "Darth", "LastName" : "Vader","Mobile": "6666699999" }; var user3 = { "FirstName" : "Bill", "LastName" : "Shakespeare","Mobile": "8342189991" };

insert(user1,function(err,result){});
insert(user2,function(err,result){});
insert(user3,function(err,result){});
find().toArray(function(err, items) {

});
});

3) Home Page: Setup up a Home page with the CRUD operations when the Bluemix cloud application’s route for e.g. http://bluemix-mongo.mybluemix.net is clicked. This is shown below.

4) Display Users: To display the list of users the route /userlist is invoked. This function gets all the records from the collection and stores them into a toArray element, which is then used for rendering the list of uses with a ‘userlist.jade’ template

userlist.js
var MongoClient = mongodb.MongoClient; var db= MongoClient.connect(mongo.url, function(err, db) { if(err) {

log(“Failed to connect to the database”);

} else {

log(“Connected to database”);

}
var collection = db.collection(‘phonebook’);
//Get all records and display them

find().toArray(function(err, items) {
log(items);
render(‘userlist’, {

“userlist” : items
});
});
});

jade

This template displays the list of users as a table. The code is shown below

extends layout block content h1= "Display the list of Users" p strong Firstname Lastname Mobile table each user, i in userlist tr td #{user.FirstName} td #{user.LastName} td #{user.Mobile} p p a(href='/') Home

Note: A link back to the Home page is included in here at the bottom.

5) Adding a User
There are 2 parts to this
a) Invoking the /newuser route to display the input form through the newuser.jade
b) Invoking the /adduser route to insert the values entered in the form. The changes are shown below
a) app.js
.. newuser = require('./routes/newuser') adduser = require('./routes/adduser') .. app.get('/newuser', newuser.list); app.post('/adduser',adduser.list);

b) newuser.js
exports.list = function(req, res){

render(‘newuser’, { title: ‘Add User’});

};

The newuser jade displays the input form
c) newuser.jade
extends layout block content h1= "Add a User" form#formAddUser(name="adduser",method="post",action="/adduser") input#inputUserFirstName(type="text", placeholder="firstname", name="firstname") input#inputUserLastName(type="text", placeholder="lastname", name="lastname") input#inputUserLastName(type="text", placeholder="mobile", name="mobile") button#btnSubmit(type="submit") submit p p a(href='/') Home

d) adduser.js

The adduser.js gets the mongo url from the process.env.VCAP_SERVICES and setups up the connection to the DB and inserts the values received in the ‘newuser.jade’ form into the database

exports.list = function(req, res) { if (process.env.VCAP_SERVICES) { var env = JSON.parse(process.env.VCAP_SERVICES); if (env['mongodb-2.2']) { var mongo = env['mongodb-2.2'][0]['credentials']; } } else { var mongo = { "username" : "user1", "password" : "secret", "url" : "mongodb://user1:secret@localhost:27017/test" } } // Set up the DB connection var MongoClient = mongodb.MongoClient; var db= MongoClient.connect(mongo.url, function(err, db) { if(err) {

log(“Failed to connect to the database”);

} else {

log(“Connected to database”);

}
// Get our form values. These rely on the “name” attributes
var FirstName = req.body.firstname;
var LastName = req.body.lastname;
var Mobile = req.body.mobile;
// Set our collection
var collection = db.collection(‘phonebook’);
// Insert the record into the DB

insert({

“FirstName” : FirstName,
“LastName” : LastName,
“Mobile” : Mobile
}, function (err, doc) {
if (err) {
// If it failed, return error

send(“There was a problem adding the information to the database.”);

}
else {
// Redirect to userlist – Display users

location(“userlist”);

// And forward to success page

redirect(“userlist”);

}
});
});

If the insert is successful the userlist page is displayed with the new user

6) Updating a User & Deleting a User: Updating and Deleting users follow the same format as Adding a user.

7) index.jade The Home page is built using index.jade with a hyperlink invoking the route for each database operation
extends layout block content h1= title p Welcome to #{title} ul li a(href='/userlist') Display list of users li a(href='/newuser') Add a user li a(href='/changeuser') Update a user li a(href='/remuser') Delete a user

Tip: “Return of the Jade“i : Getting the jade template right is truly an art as Jade is extremely finicky about spaces, tabs, indents and outdents(???). Creating the Jade template had me run into circles. I found out that you can debug the jade template individually by executing

C:> npm install jade -g" and then running C:> jade <template name>
from the command prompt. If the result of the command is “rendered <template name>.html” then you are in luck and you can incorporate this jade template into your views folder for e.g.

C: >jade index.jade rendered index.html

8) Push changes to Bluemix: Once the changes have been made push the changes on to Bluemix with ‘cf’ as follows

cf login -a https://api.ng.bluemix.net cf push bluemix-mongo -p . -m 512M cf create-service mongodb 100 mongodb01 cf bind-service bluemix-mongo mongodb01

The last 2 commands can also be performed through the Bluemix dashboard in which you add the mongodb service to your Node.js app/

8) Files and Logs: In the Bluemix dashboard you can check your logs in the Files and Logs

Important tip: Finally if the application fails to start when you push the application with ‘cf’ for e.g.

cf push <app name> -p . -m 512M .... ..... ----> Writing a custom .npmrc to circumvent npm bugs ----> Installing dependencies ----> Caching node_modules directory for future builds ----> Cleaning up node-gyp and npm artifacts ----> No Procfile found; Adding npm start to new Procfile ----> Building runtime environment ----> Checking and configuring service extensions ----> Uploading droplet (7.6M) of 1 instances running, 1 down of 1 instances running, 1 down of 1 instances running, 1 down of 1 instances running, 1 down
or if it crashes when you click a link then your debugging friend is

cf logs <app name > — recent
This will dump the error that was encountered either while the application was being started of why the application crashed.

You can fork this Bluemix application from bluemix-mongo at IBM Devops or from GitHub at bluemix-mongo

Disclaimer: This article represents the author’s viewpoint only and doesn’t necessarily represent IBM’s positions, strategies or opinions

Find me on Google+

Mixing Twilio with IBM Bluemix

This post walks you through the steps to get started with Twilio on IBM’s Bluemix. Twilio comes as a service that you can add to your Mobile Cloud or Node.js app. Here’s a quick look at Twilio. Twilio, is a cloud communications IaaS organization which allows you use standard web languages to build voice, SMS and VOIP applications via a Web API.

Twilio provides the ability to build VOIP applications using APIs. Twilio itself resides in the cloud and is always available. It also provides SIP integration which means that it can be integrated with Soft switches. Twilio looks really interesting with its ability to combine the cloud, Web and VOIP, SMS and the like.

This post barely scratches the surface of Twilio & Blue mix. This article provides aa hands-on experience for integration of Twilio with Bluemix and is based on this Twilio blog post. It enables you to send a SMS to your mobile phone by typing in a URL.

As in my earlier post the steps are

1) Fire-up a Node.js Webstarter application from the Bluemix dashboard. In my case I have named the application websms. Once this is up and running

2) Click Add a Service and under ‘Web and Application’ choose Twilio.

3) Enter a name for the Twilio service. You will also need the Account SID and Authorization token

4) For this go to http://www.twilio.com and sign up

5) Once you have registered, go to your Dashboard for the Account SID and Auth Token. If the Auth token is encrypted, you can click the ‘lock’ symbol to display the Auth token in plain text.

6) Enter the Accout SID and Auth Token in the Twilio service in Bluemix

7) To get started you can simply fork my Twilio websms code from devops.

8) Now clone the code into a folder you create as follows

git clone https://hub.jazz.net/git/tvganesh/websms

9) You will need to modify the following files

package.json

manifest.yml

app.js

10) You can create package.json by running
npm init. Make sure you enter the name of the application you created in Bluemix. In my case it is “websms’ For the rest of the options you can choose the default. Here is the package.json file
"name": "websms", "version": "0.0.0", "description": "This README.md file is displayed on your project page. You should edit this \r file to describe your project, including instructions for building and \r running the project, pointers to the license under which you are making the \r project available, and anything else you think would be useful for others to\r know.", "main": "app.js", "dependencies": { "gopher": "^0.0.7", "express": "^3.12.0", "twilio": "^1.6.0", "ejs": "^1.0.0" }, "devDependencies": {}, "scripts": { "test": "echo \"Error: no test specified\" && exit 1" }, "repository": { "type": "git", "url": "https://hub.jazz.net/git/tvganesh/websms" }, "author": "", "license": "ISC" }

11) In the manifest.yml make sure you enter the name of your application and the host

applications: - host: websms disk: 1024M name: websms command: node app.js path: . domain: <your domain> mem: 128M instances: 1

12) Lastly make changes to your app.js.

// dependencies var app = require('gopher'), twilio = require('twilio'); var config = JSON.parse(process.env.VCAP_SERVICES); var twilioSid, twilioToken; config['user-provided'].forEach(function(service) { if (service.name == 'Twilio') { twilioSid = service.credentials.accountSID; twilioToken = service.credentials.authToken; } }); // URL test app.get('/', function(request, response) { var client = new twilio.RestClient(twilioSid, twilioToken); client.sendMessage({ to:'<Your mobile number>', from:'<Number from Twilio dashboard', body:'Twilio notification through Bluemix!' }, function(err, message) { response.send('Message sent! ID: '+message.sid); }); });

13) After you have made the changes you will need to push the changes to Bluemix using the command line based ‘cf’ tool
14) Login into cf with
cf login – a http://api.ng.bluemix.net

15) Push the websms onto bluemix

16) In the folder where you websms files reside entr the following command
cf push websms -p . -m 512M

17) This should push the code to Bluemix.
Note: If you happen to get a
Server error, status code: 400, error code: 170001, message: Staging error: cannot get instances since staging failed
then you need to make sure to check the changes made to files app.js, package.,json or the manigfest,yml.

18) If all things went smoothly, go to your Bluemix dashboard and click the link adjacent to the Routes. You should see that an SMS has been sent as shown

19) Your mobile should now display the message that was sent as shown below

20) Check the analytics in your Twilio dashboard

Disclaimer: This article represents the author’s viewpoint only and doesn’t necessarily represent IBM’s positions, strategies or opinions

Find me on Google+

Get your feet wet with IBM Bluemix

This post provides the initial steps to get started on IBM’s Bluemix (currently in beta). Bluemix is open-standard, cloud based Platform-as-a-Service (PaaS) from IBM. Bluemix allows one to quickly put together mobile, web, Big Data, IoT applications. Bluemix is an implementation of IBM’s Open Cloud Architecture, Cloud Foundry which enables developers to rapidly build, deploy, and manage their cloud applications. The developers can tap into a growing ecosystem of available services and runtime frameworks.

Bluemix uses the Softlayer infrastructure to host the user applications. Clients/developers interact with Bluemix either with HTTP or REST as shown below

Here are the steps to get going on Bluemix

First things first

I would suggest that you get all the registrations and installations right away.

Bluemix dashboard– Get started by creating an account on Bluemix. This will provide you access to the Bluemix’s dashboard from which you can quickly create applications (mobile, Web, IoT, BigData) etc

Devops: Register for an account with Devops. Devops allows you to easily develop, deploy and track your code online. Devops also allows you to collaborate with others by forking code from their Git repositories

Cf Interface : Install the Command line interface ‘cf” to Bluemix. The ‘cf’ command interface is built with Google’s Go programming language. With ‘cf ‘you can login to Bluemix, create an application, add services and manage your application. You can also do this from the Bluemix’es dashboard.

Install Git: There are multiple ways to develop code for Bluemix. Git command line happens to be one of them, So it makes sense to have this installed. You can install this from this link https://hub.jazz.net/tutorials/clients#installing_git

Install Node.js:The application that this post discusses is based on a Node.js based application so it will help to have it installed. Node.js is a platform that enables building of fast, scalable network applications and created by Ryan Dahl.

Kicking off Bluemix : A good first application to get moving on in Bluemix is the already available Sentiment Analysis of Twitter. This application uses the Node.js ‘sentiment’ module to perform some basic sentiment analysis.

The quickest and most painless way to get started on Bluemix is to ‘fork’ the code for Sentiment Analysis from Devops.

1) Login to your Devops account. Click the following Sentiments link from Devops, in which I have created a slight modification to the sentiment analysis application. You can also clone the code from GitHub at sentiments.

2) Click the Edit Code button at the top. This will open the files and directories in this project (see picture below)

3) Next click the “Fork’ button on the panel on the left side. This will create a copy of the above code in your own repository (see picture below )

4) The Twitter sentiment analysis code is in app.js written in Node.js. You can make changes to the code as needed. I have made a few modifications to the code that I had forked. I added changes which adds a textual output of the Twitter sentiment

;

How to make code changes with Web IDE

5) To make code changes double click the app.js file. This will open up the code window. You can use the GUI based IDE to make the code changes and merge with the master branch, The steps are
a) Make the necessary changes and click the symbol shown

3. This will open a new window as shown below

4) Click the ‘Stage to change’ button.

5) This will move the changes to Staged. Click the ‘Commit’ button and enter the reason for the change and click the “Submit’

6) This will move the changes from ‘Staged’ to ‘Commits for master branch’

7) Now click ‘Push all’ and click ‘Ok’ in the Git Push popup window. This will merge the changes into the master branch.

8) Once this done click ‘Build & Deploy’ button

9) Your changes will transition from ‘Pending’ to ‘OK’. Now click the ‘Manage’ button. This will deploy the application with the latest changes on to Bluemix.

10) Do the following to populate the details for the parameters below with a Twitter app that you create for your application

var tweeter = new twitter({
consumer_key: <your API key>,
consumer_secret: <your API secret>,
access_token_key:<your access token >,
access_token_secret: <your access token secret>
});

11) To do this log into http://dev.twitter.com

12) Click My applications where your picture is displayed and then click Create application.

13) Enter the details for Name,Description & Website (can be any valid website) and then click Create Twitter application.. This will create the Twitter application.

14) Click the API tab. Scroll down to the bottom and click “Create my access token”.

15) This will generate the Access token & Access token secret. Enter all the details (API Key, API secret, Access Token, Access Token secret into app.js and push to the master branch before deploying on Bluemix

Code changes with Git command line

11) Incidentally the changes to code can also be made through the Git command shell as follows

a) git clone https://hub.jazz.net/git/tvganesh/sentiments

b) Modify the code using any editor and save the changes

c) Go the directory containing the files and do

git add *

d) git commit -m “Cosmetic” app.js

e) git push

This will push the changes to the git repository in the master branch

8) Click the ‘Build & deploy’ in the top right corner. You should see this