yashashree-chopada/spring-boot-camel-amq

a quickstart showing how to use Spring Boot, Apache Camel and Apache ActiveMQ together with Kubernetes or OpenShift

Spring-Boot, Camel and EnMasse QuickStart

This quickstart demonstrates how to connect a Spring-Boot application to EnMasse (MaaS) and use JMS messaging between two Camel routes using Kubernetes or OpenShift.

In this example we will use two containers, one container to run as an EnMasse instance, and another as a client to the broker, where the Camel routes are running.

This quickstart requires EnMasse to have been deployed and running first. To install EnMasse into OpenShift or Kubernetes follow documentation.

The application utilizes the Spring @ImportResource annotation to load a Camel Context definition via a src/main/resources/spring/camel-context.xml file on the classpath.

Important

This quickstart can run in 2 modes: standalone on your machine and on Kubernetes / OpenShift Cluster

Deployment options

You can run this quickstart in the following modes:

• Kubernetese / Single-node OpenShift cluster

• Standalone on your machine

The most effective way to run this quickstart is to deploy and run the project on OpenShift.

For more details about running this quickstart on a single-node OpenShift cluster, CI/CD deployments, as well as the rest of the runtime, see the Spring Boot Runtime Guide.

Running the Quickstart on a single-node Kubernetes/OpenShift cluster

A single-node Kubernetes/OpenShift cluster provides you with access to a cloud environment that is similar to a production environment.

If you have a single-node Kubernetes/OpenShift cluster, such as Minishift or the Red Hat Container Development Kit, installed and running, you can deploy your quickstart there.

To deploy this quickstart to a running single-node OpenShift cluster:

1. Download the project and extract the archive on your local filesystem.

2. Log in to your OpenShift cluster:

   $ oc login -u developer -p developer

3. Create a new OpenShift project for the quickstart:

   $ oc new-project MY_PROJECT_NAME

4. Change the directory to the folder that contains the extracted quickstart application (for example, my_openshift/spring-boot-camel-amq) :

   $ cd my_openshift/spring-boot-camel-amq

5. Before running the quickstart, you need to configure EnMasse (create user and queue - both as an admin). Run the following commands to apply configuration files:

   $ oc login -u system:admin
   $ oc apply -f src/main/resources/k8s

6. Build and deploy the project to the OpenShift cluster:

   $ mvn clean -DskipTests fabric8:deploy -Popenshift

7. In your browser, navigate to the MY_PROJECT_NAME project in the OpenShift console. Wait until you can see that the pod for the spring-boot-camel-amq has started up.

8. On the project’s Overview page, navigate to the details page deployment of the spring-boot-camel-amq application: https://OPENSHIFT_IP_ADDR:8443/console/project/MY_PROJECT_NAME/browse/rc/spring-boot-camel-amq-NUMBER_OF_DEPLOYMENT?tab=details.

9. Switch to tab Logs and then see the messages sent by Camel.

Running the quickstart standalone on your machine

To run this quickstart as a standalone project on your local machine:

1. You need to have a running instance of EnMasse with messaging user admin:test and queue incomingOrders.

   You can use EnMasse instance from previous steps. You need to configure the src/main/resources/application.properties file in order to use the correct remote instance of EnMasse.

   Get remote url of EnMasse instance by running the following command:

   $ oc get addressspace spring-boot-camel-amq -o jsonpath={.status.endpointStatuses[?(@.name==\'messaging\')].externalHost}

   Fill this value into src/main/resources/application.properties instead of FILL_ME.

2. Download the project and extract the archive on your local filesystem.

3. Build the project:

   $ cd PROJECT_DIR
   $ mvn clean package

4. Run the service:

   $ mvn spring-boot:run

5. See the messages sent by Camel.