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- [Narrator] To build our proof of concept,

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we need to set up our Dev environment

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that has several elements that require

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careful configuration.

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I already set up the environment,

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and we will now take a brief tour,

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looking at each of the elements.

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First,

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let us take a look at Eclipse.

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Here, I have created a Maven project

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that is linked with Git Repo.

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To create this project,

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I used Maven Webapp Archetype,

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which generates this folder structure.

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A key element in Maven projects is pom.xml.

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In this, starting from the top,

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in line number five and six,

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the GROUP_ID is com.hplussport,

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and artifact ID is red30.

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The packaging in line number seven

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is set to war,

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which we will deploy on our production server.

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After that,

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I have included some dependencies

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for Java and mysql.

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I am finally in build.

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The important elements are

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these directories.

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Source directory in line 54,

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test source directory in line 55,

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and war source directory in line 70.

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These directories should be correctly specified

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so that Maven can find these files for testing,

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building, and deploying.

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Now this project is configured

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to run on Tomcat server.

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To set it up,

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I installed Tomcat on my machine,

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and then created a server from within Eclipse.

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Then,

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I bound the two together,

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by going into project,

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build path,

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configure build path.

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From here,

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into server,

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and you can see

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that TomcatDev is associated with project Red30.

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You can see some configurations of the server

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by going into server view,

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and double clicking on the server.

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This shows some basic configuration settings,

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starting with the server name,

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TomcatDev, hosted on local host,

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and the configuration path where all these files are stored.

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One important aspect here

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are these ports.

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Make sure these ports are

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not clashing with any other applications

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running on your machine.

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Coming back to these files,

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these files have some important configuration settings

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which we need to look at.

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So starting with

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Eclipse project workspace,

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you will find a folder named servers,

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that has another folder named TomcatDev-config,

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if TomcatDev is your Dev server name.

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It has several configuration files

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and the ones we are interested in

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are context.xml,

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server.xml, and tomcat-users.xml.

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Notice that we won't touch the web.xml in this folder

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because it pertains to the server

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and not to our application.

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First,

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let's look at context.xml.

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This defines the data source to connect to,

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which is red30db database.

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I have given it the name DataSource,

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and the username and password you see here

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are for accessing red30db.

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Next, server.xml.

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Here you need to specify the ports

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that should not clash with any other application.

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And finally,

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tomcat-users.xml, where you need to add a user

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for manager-gui role,

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if you want to manage the Tomcat application

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using the gui provided by Tomcat.

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If not, then you can ignore it.

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Now, to the applications web.xml,

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which sits inside WEB-INF folder,

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inside webapp folder of the application.

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What I'm going to set up here in this xml is,

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how does the data get loaded from the database.

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I want my application to have all data loaded up

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before users start interacting with it.

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This improves the application performance.

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So I'm going to create a servlet

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named DataLoader,

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that will connect to red30db

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and read all the data.

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And to do this,

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I need to specify here in web.xml,

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that it should be loaded on startup.

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The number one indicates the sequence

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in which it should be loaded.

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So these are the settings on the Dev. site.

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The Tomcat proj server configuration settings

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are quite similar except,

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that the config files are not inside Eclipse Workspace,

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but inside the base Apache installation folder

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on our aws ec2 instance.

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So in the Apache root folder,

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there is a conf folder with two xml files

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which need some configuring.

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And then there is webapps folder,

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where we will deploy our war file.

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This war will explode to create the red30 folder,

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which will have all the application files,

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as shown here.

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The context.xml file remains the same for proj server,

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except that the URL for database,

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comes from Amazon RDS.

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Web.xml also remains the same,

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where we specify DataLoader servlet to be loaded on startup,

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and in tomcat-users.xml,

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we need to add one additional user

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that has manager-script role.

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This role will allow us to deploy war file into servers

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webapps folder through Jenkins.