Simple example of a WildFly Swarm application that uses OpenTracing and Jaeger

This example contains a simple wildfly-swarm application which creates traces via OpenTracing and Jaeger. The exmaple can be run in a couple of different ways

Running on a laptop/desktop

Start Jaeger in Docker

See http://jaeger.readthedocs.io/en/latest/getting_started/ for instructions on running Jaeger. As of this writing, the following command should work: docker run -d -p5775:5775/udp -p6831:6831/udp -p6832:6832/udp -p5778:5778 -p16686:16686 -p14268:14268 jaegertracing/all-in-one:latest

Run the example using Maven and the wildfly-swarm plugin

Clone this repository, and cd into the top level directory. Then:

• export TEST_SERVICE_NAME=your-service-name
• mvn clean install wildfly-swarm:run

Run the example using the fat jar

Clone this repository, and cd into the top level directory. Then do:

• mvn clean install
• export TEST_SERVICE_NAME=your-service-name
• java -jar target/demo-swarm.jar

To create spans

Hit the url: http://localhost:8080/hello

To see the spans you've created

Open http://localhost:16686 in a browser. Select the service name you specified above and click on the Find Traces button

Running the example on OpenShift

Deploying Jaeger

To deploy using the Jaeger Production template, do the following

• Create a project on OpenShift, and login on the command line using the oc login command
• curl https://raw.githubusercontent.com/jaegertracing/jaeger-openshift/master/production/cassandra.yml --output cassandra.yml
• oc create --filename cassandra.yml
• Wait a few minutes until cassandra finishes deploying. You can watch this in the OpenShift console if desired
• curl https://raw.githubusercontent.com/jaegertracing/jaeger-openshift/master/production/jaeger-production-template.yml --output jaeger-production-template.yml
• oc process -f jaeger-production-template.yml | oc create -n your-project-name -f -

NOTE: substitute your real project name for "your-project-name" in the command above

Deploying the Example to OpenShift

• mvn -Dtest.service.name=your-service-name -Popenshift clean install fabric8:deploy

NOTE: The fabric8 maven plugin can sometimes be very slow the first time you run it, so expect to wait a few minutes for this to work.

TO create spans

First execute oc get routes | grep demo That will return something that looks like: demo-opentracing demo-opentracing-something.192.168.64.24.nip.io demo-opentracing 8080 None

Then substituting the ip address you get for the one shown here: curl demo-opentracing-something.192.168.64.24.nip.io/hello

NOTE: You can also do this in a browser, but be sure to append the hello

To see the spans you've created

Click on the Jaeger link in the OpenShift UI, or do oc get routes | grep jaeger and open that URL in a browser.