Support for Spring boot (java based system)

[hariohmprasath]

Describe the feature

A clear and concise description of what the feature idea is. Please make sure you didn't find an existing issue with the same subject.

Spring boot is one of the heavily used containerized environment when it comes to java, it would be great to have this support added to this platform. The whole build and packing can be done in a build container so the developer can just concentrate on write code, instead of worrying about the build & deployment platform.

I will be happy to contribute this, let me know if the team is interested in bring this support to platform

Backward compatibility concerns

Would this be BC?
No

Use cases

Springboot (java based environment)

Examples

Microservices & applications built using Spring boot

[fbrissi]

A spring-boot preset would be great.
It's something we already thought we started looking at this with a docker image for the kool.

You can by taking a look at it, it's still a start.

https://github.com/kool-dev/docker-java

Start with Spring-boot in https://start.spring.io with Java 8, gradle or maven and Spring-boot 2.4.8 because the new Spring version needs Gradle 6.8.x, 6.9.x or 7.x, we need to update that in this image and teste with more use case, and with Spring Web.

We still don't have a preset that creates the project but I think we can have it using our own API.

Example:
https://start.spring.io/starter.zip?type=gradle-project&language=java&bootVersion=2.4.8.RELEASE&baseDir=demo&groupId=com.example&artifactId=demo&name=demo&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.demo&packaging=jar&javaVersion=1.8&dependencies=web

Create the files:

docker-compose.yml

version: '3'
services:
  app:
    image: kooldev/java:8
    ports:
      - "${KOOL_HTTP_PORT:-80}:8080"
    environment:
      MAIN_CLASS: "com.example.demo.DemoApplication"
      ASUSER: "${KOOL_ASUSER:-0}"
      UID: "${UID:-0}"
    volumes:
      - .:/app:delegated
    networks:
      - kool_local
      - kool_global

networks:
  kool_local:
  kool_global:
    external: true
    name: "${KOOL_GLOBAL_NETWORK:-kool_global}"

kool.yml

scripts:
  mvn: kool docker kooldev/java:8 mvn
  gradle: kool docker kooldev/java:8 gradle
  jshell: kool docker kooldev/java:11 jshell

And execute:

kool run gradle build # gradle
kool run mvn package # maven
kool start

[hariohmprasath]

Hi @fbrissi,
This is awesome, thanks for the quick response and I will definitely try it out. The next one that would be super useful would be go, let me create a feature request and I see you dont have a repo for this yet. Will be happy to contribute let me know.

• Hari

[fabriciojs]

Hello @hariohmprasath ! Thanks for getting in touch!

Yeah, would be great to have the preset for Java and Golang! We started with the stacks we work the most ourselves (PHP and Javascript) as we felt more confident building them. Now we want to expand/cover all major stacks that work well with dockerized environments.

While we are looking to expand the presets would be great to have people with more expertise in stacks like Java, .NET, Python willing to help build/document/maintain presets for these stacks! Leveraging the Kool presets schema.

Well having said that, as Filipe mentioned above we have some work in progress for Java - but still, there is some considerable work required to have a proper tested preset we can document and ship with kool.

Please feel free to join us at Slack to discuss ideas/get help on how to contribute/build this preset!