/local-liberty-tutorial-1483140665373

Primary LanguageJavaApache License 2.0Apache-2.0

Tutorial for local development with Liberty for Java™

This project provides a walkthrough on how to develop your Liberty application locally while using IBM Bluemix services in the cloud or their local equivalents when available.

If you are not going to follow the tutorial steps but want to quickly get the app deployed in Bluemix, use the Deploy to Bluemix button:

Deploy to Bluemix

How it works

The sample application uses the following runtime and services:

In this application, the user submits a text for analysis, optionally providing a description. The text is sent to Personality Insights and the results are displayed.

Sample application screenshot

About the code

The application is a simple Java EE web application.

![Architecture](http://g.gravizo.com/g? digraph G { node [fontname = "helvetica"] ui -> liberty liberty -> database liberty -> watsonpi rankdir = LR; database [shape=box style=filled color="%234E96DB" fontcolor=white] watsonpi [shape=box style=filled color="%2324B643" fontcolor=white] } )

  • ui - the user interface source is under src/main/webapp. It is a simple html page using Bootstrap, Handlerbars and jQuery. app.js holds the code to interface the ui with the backend.

  • liberty - the backend exposes one resource through REST, PIResource. It implements GET/PUT/DELETE actions to manage PIEntry. It reads/writes from the database through PIEntryRepository with the database connector obtained from Database. When a new text is submitted (through PUT), it calls Watson Personality Insights and persists the results in the database.

Running the app on Bluemix

If you are only looking to get this app deployed in your Bluemix account, follow these steps otherwise skip to the next section to start the tutorial.

  1. Sign up for Bluemix or use your existing account.

  2. Download and install the Cloud-foundry CLI tool

  3. Clone the app to your local environment from your terminal using the following command

$ git clone https://github.com/IBM-Bluemix/local-liberty-tutorial.git

  1. cd into this newly created directory

  2. Build the application WAR file with Maven:

mvn package

The command generates the WAR in target/local-liberty-tutorial.war.

  1. Connect to Bluemix in the command line tool and follow the prompts to log in.
$ cf api https://api.ng.bluemix.net
$ cf login

Note: The services in the following steps may produce warnings when you create them, alerting you that they are not entirely free. Creating and trying this app leaves you well within the limits of your free quota, however, always remain cognizant of your monthly service usage.

  1. Create the Cloudant service in Bluemix.
$ cf create-service cloudantNoSQLDB Lite cloudant-for-liberty
  1. Create the Personality Insights service in Bluemix
$ cf create-service personality_insights tiered pi-for-liberty
  1. Push your app to Bluemix
$ cf push

And voila! You now have your very own instance of the application running on Bluemix.

Tutorial Requirements

  1. Sign up for a Bluemix Account or use an existing account.
  2. Download and install the Cloud-foundry CLI tool
  3. Have your Java EE development environment ready

The tutorial uses:

Tutorial Steps

Here we go, follow these steps to get a copy of the application running locally and deployed to Bluemix:

  1. Import the project into the development environment
  2. Create a Liberty profile
  3. Install and configure Apache CouchDB
  4. Configure the Liberty profile to use Apache CouchDB
  5. Test Liberty and CouchDB configuration
  6. Configure Personality Insights
  7. Test the application locally
  8. Deploy the application to Bluemix

Troubleshooting

The primary source of debugging information for your Bluemix app is the logs. To see them, run the following command using the Cloud Foundry CLI:

$ cf logs local-liberty-tutorial --recent

For more detailed information on troubleshooting your application, see the Troubleshooting section in the Bluemix documentation.

Privacy Notice

This application includes code to track deployments to IBM Bluemix and other Cloud Foundry platforms. The following information is sent to a Deployment Tracker service on each deployment:

  • Application Name (application_name)
  • Space ID (space_id)
  • Application Version (application_version)
  • Application URIs (application_uris)

This data is collected from the VCAP_APPLICATION environment variable in IBM Bluemix and other Cloud Foundry platforms. This data is used by IBM to track metrics around deployments of sample applications to IBM Bluemix. Only deployments of sample applications that include code to ping the Deployment Tracker service will be tracked.

Disabling Deployment Tracking

To disable deployment tracking remove cf-java-app-tracker-client dependencies from the pom.xml.