/test-launcher-0503

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Circuit Breaker - Eclipse Vert.x Booster

Important
 This runs best when deployed to OpenShift in order to use the circuit breaker functionality. For more details on using this booster with a single-node OpenShift cluster, CI/CD deployments, as well as the rest of the runtime, see the Eclipse Vert.x Runtime Guide.
Important
 This booster requires Java 8 JDK or greater and Maven 3.3.x or greater.
Important
 As part of the process of creating this booster, developers.redhat.com/launch or the Fabric8 Launcher tool set up a project with a CI/CD deployment of this booster. You can see the status of this deployment in your Single-node OpenShift Cluster or OpenShift Online Web Console.

Running the Booster on a Single-node OpenShift Cluster

If you have a single-node OpenShift cluster, such as Minishift or Red Hat Container Development Kit, installed and running, you can also deploy your booster there. A single-node OpenShift cluster provides you with access to a cloud environment that is similar to a production environment.

To deploy your booster to a running single-node OpenShift cluster:

  1. Log in and create your project.

    $ git clone git@github.com:slemeur/test-launcher-0503

$ cd test-launcher-0503

$ oc login -u developer -p developer

$ oc new-project MY_PROJECT_NAME

$ mvn clean fabric8:deploy -Popenshift

Interacting with the Booster on a Single-node OpenShift Cluster

To interact with your booster while it’s running on a Single-node OpenShift Cluster, you first need to obtain it’s URL:

$ oc get route greeting-service -o jsonpath={$.spec.host}

greeting-service-MY_PROJECT_NAME.LOCAL_OPENSHIFT_HOSTNAME

$ oc get route name-service -o jsonpath={$.spec.host}

name-service-MY_PROJECT_NAME.LOCAL_OPENSHIFT_HOSTNAME

You can use the form at your application’s url or you can use the curl command:

$ curl http://greeting-service-MY_PROJECT_NAME.LOCAL_OPENSHIFT_HOSTNAME/api/greeting
{"content":"Hello, World!"}

$ curl -X PUT -H "Content-Type: application/json" -d '{"state": "fail"}' http://name-service-MY_PROJECT_NAME.LOCAL_OPENSHIFT_HOSTNAME/api/state

$ curl http://greeting-service-MY_PROJECT_NAME.LOCAL_OPENSHIFT_HOSTNAME/api/greeting
{"content":"Hello, Fallback!"}

$ curl -X PUT -H "Content-Type: application/json" -d '{"state": "ok"}' http://name-service-MY_PROJECT_NAME.LOCAL_OPENSHIFT_HOSTNAME/api/state

$ curl http://greeting-service-MY_PROJECT_NAME.LOCAL_OPENSHIFT_HOSTNAME/api/greeting
{"content":"Hello, World!"}

More Information

You can learn more about this booster and rest of the Eclipse Vert.x runtime in the Eclipse Vert.x Runtime Guide.

Note
 Run the set of integration tests included with this booster using mvn clean verify -Popenshift,openshift-it.