SpringClient - A Simple Spring Application

This application demonstrates simple examples for how to use Spring Boot, Spring MVC and Spring for REST APIs and Spring Service.

Lab

A Lab or Workshop accompanies this application:

Setup and configuration instructions, see labs/exercise-7/README0.md,
Lab: Deploying a Spring Boot App using with Jenkinsfile Using Source-to-Image (S2I) in Jenkings on Openshift, see labs/exercise-7/README.md,
Extra: Indepth Review of the Jenkinsfile,

Run

Using the Maven Wrapper,

$ ./mvnw clean install
$ ./mvnw spring-boot:run

Without Maven Wrapper,

$ mvn clean install
$ mvn spring-boot:run

Docker

DOCKERHUB_USERNAME=remkohdev
docker image build -t springclient .
docker login docker.io -u $DOCKERHUB_USERNAME
docker tag springclient $DOCKERHUB_USERNAME/springclient:v1.0.0
docker push $DOCKERHUB_USERNAME/springclient:v1.0.0

Test

$ curl -X GET 'http://localhost:8080/api/hello?name=pluto'

Maven

To download all dependencies for development, run

$ mvn dependency:copy-dependencies

Deployment

The Jenkinsfile is written for a Source-to-Image (S2I) deployment to OpenShift 3.11.

Lab coming soon...

Docs

See Java: Get Started with Spring Boot and Java: Create a Spring MVC App with Tomcat and Maven for a tutorial on Spring Boot and Spring MVC.

TODO

Replace the 'oc' syntax for the OpenShift command line interface (CLI) by the syntax used for the OpenShift Jenkins Pipeline (DSL) Plugin.
Another TODO, add an openshift.selector().exists() condition, before deleting. Currently there is manual step required to make sure the project exists. In addition, if deleting the project resources has not completed fully, the create project will also become an issue. In other words, not fool proof right now.
The oc new-app takes a full path URI to the base image, but there has to be a way to reference this by tag and perhaps use the oc import-image as a separate step to make sure it exists. Didn't have time to fix this part.

defjin/spring-client