| <?php |
| /******************************************************************************* |
| * Copyright (c) 2015 Eclipse Foundation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Eric Poirier (Eclipse Foundation) - Initial implementation |
| *******************************************************************************/ |
| ?> |
| |
| <h1 class="article-title"><?php echo $pageTitle; ?></h1> |
| |
| <h2>Spring Boot and Cloud Foundry</h2> |
| |
| <p> |
| <a target="_blank" href="http://projects.spring.io/spring-boot/">Spring |
| Boot</a> allows for easier development of Spring based |
| stand-alone Java or web applications. Spring Boot is ideal for |
| Platform as a Service (PaaS), and is a great way to develop |
| applications that run on Cloud Foundry. |
| </p> |
| |
| <p> |
| <a target="_blank" href="https://run.pivotal.io/">Pivotal Web |
| Services (PWS)</a> powered by Cloud Foundry offers a wide |
| variety of services readily available to deployed applications, |
| whether Spring Boot, traditional war web applications, or other |
| supported types like Node.js. In addition, it provides automatic |
| runtime setup for applications through buildpacks, like the <a |
| target="_blank" |
| href="http://blog.cloudfoundry.org/2013/09/06/introducing-the-cloud-foundry-java-buildpack/">Java |
| buildpack</a> for applications that run on a JVM. |
| </p> |
| |
| <p> |
| To deploy a Spring Boot application in Eclipse, users need only |
| drag and drop their application project to a PWS target created by |
| <a target="_blank" |
| href="https://github.com/cloudfoundry/eclipse-integration-cloudfoundry">Cloud |
| Foundry Eclipse</a>, a joint tooling collaboration between |
| Pivotal Software, Inc. and IBM. The Cloud Foundry runtime setup, |
| application deployment and startup, and creation of services used |
| by the application like an SQL database, are all taken care of for |
| the user by the tooling and Cloud Foundry. Application scaling is |
| also easily performed, and project changes can be incrementally |
| pushed through the Cloud Foundry Eclipse UI . This allows for |
| smooth deployment and management of an application from the same |
| Eclipse environment where the application is developed. |
| </p> |
| |
| <p> |
| In this article, we cover how straightforward and simple it is to |
| create a Spring Boot application in <a target="_blank" |
| href="https://spring.io/tools/sts">Spring Tool Suite (STS)</a>, |
| an Eclipse based development environment for Spring applications, |
| and deploy it to a PWS target using Cloud Foundry Eclipse. |
| </p> |
| |
| <h2>Creating a Spring Boot Application</h2> |
| |
| <p> |
| STS provides a wizard to easily create a Spring Boot project that |
| is ready to run locally or deployed to Cloud Foundry. This is done |
| simply by opening the Eclipse <b>New Project</b> wizard and |
| selecting "Spring Starter Project". |
| </p> |
| |
| <p> |
| <a |
| href="/community/eclipse_newsletter/2015/april/images/article3.1.png"><img |
| src="/community/eclipse_newsletter/2015/april/images/article3.1.png" |
| alt="" class="img-responsive" /></a> |
| </p> |
| |
| |
| <br> |
| <br> |
| |
| <p>The wizard provides a large number of ways to configure a Spring |
| Boot application. In addition, a user can select the type of |
| packaging that is need for the application, whether jar if it is |
| meant to be a stand-alone Java application, or war if it is to be |
| deployed to a container like Tomcat. Either packaging is supported |
| in Cloud Foundry.</p> |
| |
| <p> |
| STS also features a Getting Started guide through the same <b>New |
| Project</b> wizard. Selecting "Import Spring Getting Started |
| Content" in the wizard creates a Spring project that is deployable |
| to Cloud Foundry following these <a target="_blank" |
| href="https://spring.io/guides/gs/sts-cloud-foundry-deployment/">guide |
| instructions</a>. |
| </p> |
| |
| <p>Once the project is created and it appears in the Eclipse |
| workspace, deploying it to Cloud Foundry requires three simple |
| steps:</p> |
| |
| <ol> |
| <li>Configuring the application for Cloud Foundry deployment. This |
| is only required if the application was packaged as jar. It’s |
| not needed for war applications. In the Package Explorer, right |
| click on the Spring Boot project and select: <br>Configure -> |
| Enable as Cloud Foundry App |
| </li> |
| <li>Creating a Cloud target.</li> |
| <li>Drag and dropping the Spring Boot project to the Cloud target.</li> |
| </ol> |
| |
| <p> |
| Cloud Foundry Eclipse comes pre-installed in STS 3.6.3 and higher. |
| It can also be <a target="_blank" |
| href="http://docs.cloudfoundry.org/buildpacks/java/sts.html#install">installed</a> |
| into Eclipse Java EE that uses a Java 7 JRE through the <a |
| href="http://marketplace.eclipse.org/content/cloud-foundry-integration-eclipse">Eclipse |
| Marketplace</a>. |
| </p> |
| |
| |
| <h2>Deploying to Cloud Foundry</h2> |
| |
| <p> |
| To deploy to PWS, <a target="_blank" |
| href="https://console.run.pivotal.io/register">account |
| registration</a> is required. |
| </p> |
| |
| <p> |
| Cloud Foundry Eclipse integrates into Eclipse Web Tools Platform, |
| and creating a Cloud target where an application can be deployed |
| to is a simple task of creating a new server instance through the |
| WTP <b>New Server</b> wizard. |
| </p> |
| |
| <p> |
| Open the <b>New Server</b> wizard and select "Cloud Foundry" under |
| "Pivotal". |
| </p> |
| |
| <p> |
| <a |
| href="/community/eclipse_newsletter/2015/april/images/article3.2.png"><img |
| src="/community/eclipse_newsletter/2015/april/images/article3.2.png" |
| alt="" class="img-responsive" /></a> |
| </p> |
| <br> |
| |
| <p>Once created, the Cloud Foundry server instance appears in the |
| Eclipse Servers view and it maps to the Cloud space where the |
| application will be deployed.</p> |
| |
| <p>Now the application project simply needs to be drag and dropped |
| to the Cloud target in the Eclipse Servers view.</p> |
| |
| <p> |
| <a |
| href="/community/eclipse_newsletter/2015/april/images/article3.3.png"><img |
| src="/community/eclipse_newsletter/2015/april/images/article3.3.png" |
| alt="" class="img-responsive" /></a> |
| </p> |
| <br> |
| |
| <p>During the deployment process, an application deployment wizard |
| will prompt the user to enter the deployment details for the |
| application. The wizard is pre-populated with default values, so a |
| user can just click "Finish" to deploy immediately or "Next" to |
| further configure the deployment.</p> |
| |
| <p> |
| <a |
| href="/community/eclipse_newsletter/2015/april/images/article3.4.png"><img |
| src="/community/eclipse_newsletter/2015/april/images/article3.4.png" |
| alt="" class="img-responsive" /></a> |
| </p> |
| <br> |
| |
| <p>Deployment properties that a user can modify include the |
| application URL, memory, and environment variables, like for |
| example defining JAVA_OPTS.</p> |
| |
| <p>Navigating through the same wizard will also open the Services |
| selection page, where a user can create and bind service instances |
| to the application.</p> |
| |
| <p>The list of services varies based on the Cloud target, and is |
| populated with up-to-date content from the user’s space.</p> |
| |
| <a |
| href="/community/eclipse_newsletter/2015/april/images/article3.5.png"><img |
| src="/community/eclipse_newsletter/2015/april/images/article3.5.png" |
| alt="" class="img-responsive" /></a><br> |
| <br> |
| |
| <p> |
| Among the types of services that a user can create in PWS are SQL |
| databases and messaging services like RabbitMQ. Once created, some |
| of these services need to be <a target="_blank" |
| href="http://docs.cloudfoundry.org/devguide/services/adding-a-service.html#use">bound</a> |
| to an application in order to be used. This binding is also done |
| in the same Services selection page. |
| </p> |
| |
| <p>Once a user clicks "Finish", the deployment process completes, |
| and an Eclipse console is automatically opened showing the |
| progress of the deployment, including staging of the application |
| by the buildpack.</p> |
| |
| <p> |
| <a |
| href="/community/eclipse_newsletter/2015/april/images/article3.6.png"><img |
| src="/community/eclipse_newsletter/2015/april/images/article3.6.png" |
| alt="" class="img-responsive" /></a> |
| </p> |
| <br> |
| |
| <h2>Managing the Application</h2> |
| |
| <p>When the application is successfully deployed, it will appear in |
| the Servers view under the Cloud target, and the deployed |
| application will be linked to the workspace project. Changes to |
| the workspace project can be published via WTP “Publish” in the |
| Servers view, or through the Cloud Foundry editor, which is opened |
| by double clicking on the application.</p> |
| |
| <p>The editor contains two tabs:</p> |
| |
| <p>1. "Overview", which shows information regarding the Cloud |
| target, like the space name and user credentials.</p> |
| |
| <p> |
| <a |
| href="/community/eclipse_newsletter/2015/april/images/article3.7.png"><img |
| src="/community/eclipse_newsletter/2015/april/images/article3.7.png" |
| alt="" class="img-responsive" /></a> |
| </p> |
| <br> |
| |
| <p>2. "Applications and Services", where a user can scale the |
| application, manage services, view a running application’s stats |
| like CPU and memory usage, and incrementally push changes in the |
| application project via "Update and Restart".</p> |
| |
| <p> |
| <a |
| href="/community/eclipse_newsletter/2015/april/images/article3.8.png"><img |
| src="/community/eclipse_newsletter/2015/april/images/article3.8.png" |
| alt="" class="img-responsive" /></a> |
| </p> |
| <br> |
| |
| <h2>Enhancing the Development Experience</h2> |
| |
| <p> |
| This article showed how a Spring Boot application can easily be |
| created and deployed to Cloud Foundry in an Eclipse development |
| environment. Further enhancements to the development experience |
| include <a target="_blank" |
| href="https://github.com/cloudfoundry/eclipse-integration-cloudfoundry/blob/master/debugging.md">debugging |
| support</a>, which is currently featured in Cloud Foundry |
| Eclipse 1.8.1 for certain applications through a "Debug" button in |
| the editor, and <a target="_blank" |
| href="http://zeroturnaround.com/software/jrebel/quickstart/eclipse/">JRebel</a> |
| integration available in version 1.8.2. A comprehensive view of |
| Cloud Foundry Eclipse can also be found <a target="_blank" |
| href="http://docs.cloudfoundry.org/buildpacks/java/sts.html">here</a>. |
| </p> |
| |
| <div class="bottomitem"> |
| <h3>About the Authors</h3> |
| |
| <div class="row"> |
| <div class="col-sm-12"> |
| <div class="row"> |
| <div class="col-sm-8"> |
| <img class="author-picture" |
| src="/community/eclipse_newsletter/2015/april/images/nieraj.jpg" |
| alt="nireaj" height="90" /> |
| </div> |
| <div class="col-sm-16"> |
| <p class="author-name"> |
| Nieraj Singh<br> |
| <a target="_blank" href="http://pivotal.io/">Pivotal Software, |
| Inc.</a> |
| </p> |
| <ul class="author-link"> |
| <!--<li><a target="_blank" href="">Twitter</a></li> |
| <li><a target="_blank" href="">Linkedin</a></li> |
| <li><a target="_blank" href=""></a></li> |
| $og--> |
| </ul> |
| </div> |
| </div> |
| </div> |
| </div> |
| </div> |
| |
