MicroProfile Starter has generated this MicroProfile application for you.
The generation of the executable jar file can be performed by issuing the following command
mvn clean package
This will create an executable jar file demo.jar within the target maven folder. This can be started by executing the following command
java -jar target/demo.jar
During development, you can use Liberty's development mode (dev mode) to code while observing and testing your changes on the fly. With the dev mode, you can code along and watch the change reflected in the running server right away; unit and integration tests are run on pressing Enter in the command terminal; you can attach a debugger to the running server at any time to step through your code.
mvn liberty:dev
To launch the test page, open your browser at the following URL
http://localhost:9080/openapi/ui
By default, there is always the creation of a JAX-RS application class to define the path on which the JAX-RS endpoints are available.
More information on MicroProfile can be found here
The health status can be used to determine if the 'computing node' needs to be discarded/restarted or not. Specification here
The class ServiceHealthCheck contains an example of a custom check which can be integrated to health status checks of the instance. The index page contains a link to the status data.
Exposes the information about your endpoints in the format of the OpenAPI v3 specification. Specification here
The index page contains a link to the OpenAPI information of your endpoints.
Allow the participation in distributed tracing of your requests through various micro services. Specification here
To show this capability, you need to download Jaeger and run ./jaeger-all-in-one.
Alternatively, you can download the docker image of all-in-one using docker pull jaegertracing/all-in-one:${version},
followed by running the docker image. Refer to Jaeger doc for more info.
Open http://localhost:16686/ to see the traces. You have to invoke your demo app endpoint for any traces to show on Jaeger UI.