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rapid-stock-market: Example of Compatibility Mode Between HotRod and REST

Author: Martin Gencur Level: Intermediate Technologies: Infinispan, HotRod, REST Summary: The rapid-stock-market quickstart demonstrates how to enable Infinispan compatibility mode so that data can be read/written over different protocols. Target Product: JDG Product Versions: JDG 7.x Source: https://github.com/infinispan/jdg-quickstart

What is it?

The rapid-stock-market quickstart demonstrates the behaviour of a compatibility mode. Updates of shares are being stored in a cache via HotRod client and retrieved via REST client.

The quickstart consists of two applications: a server-side application and client-side application.

System requirements

All you need to build this project is Java 8.0 (Java SDK 1.8) or better, Maven 3.0 or better.

The application this project produces is designed to be run on Red Hat JBoss Data Grid 7.x

Configure Maven

If you have not yet done so, you must Configure Maven before testing the quickstarts.

Configure and Start JDG Server

  1. Build a server module for Red Hat JBoss Data Grid (JDG) Server. In this step, a class common to both clients and the server is packaged in a single jar file and placed in a directory structure similar to a server module.

    mvn clean package -Pprepare-server-module

  2. Install the server module into the server.

    • Copy the prepared module into the server:

      cp -r target/modules ${JDG_HOME}/

    • Add the new module as a dependency of the org.infinispan.commons module. I.e. add <module name="org.infinispan.quickstart.compatibility.common"/> to module.xml in modules/system/layers/base/org/infinispan/commons/main

  3. Configure JDG server to use a proper configuration file.

    • Copy an example configuration file for a compatibility mode to a correct location where JDG server can pick it up.

      cp ${JDG_HOME}/docs/examples/configs/standalone-compatibility-mode.xml ${JDG_HOME}/standalone/configuration

    • Disable REST security by removing security-domain and auth-method attribute definitions from <rest-connector> configuration element.

  4. Start JDG server

    ${JDG_HOME}/bin/standalone.sh -c standalone-compatibility-mode.xml

Build and Run the Quickstart

  1. Build the application.

    mvn clean package

  2. Open another terminal and start the server-side application - Market Updater

    mvn exec:java

  3. Open yet another terminal and start the client-side application

    mvn exec:java -Pclient

  4. Follow the help for the client application and try it out!