reactive-greeting

Demo reactive rsocket spring boot project.

Goal

The goal of this project is to allow me to experiment with:

Primarily:

• Gradle
• Reactive framework
• Protobuf
• RSocket

Secondary:

• Multi project/module code coverage
• Multi project/module docker creation (via Jib)
  • Create docker containers locally
  • Publish docker containers to github container registry
  • Create release github action that publishes containers
• Configure with Skaffold
• Configure with Istio gateway

Next steps:

• Unable to automate release. Getting error 'You have uncommitted files'. Requires investigation - may need to change release plugin.

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Solution overview

• reactive-greeting : Root project
• rest-greeting : Standalone reactive rest spring boot client which user services lib
• rsocket-client-greeting : Spring boot Rest RSocket client, connects to rsocket-greeting server
• rsocket-greeting : Spring boot RSocket server
• services : library project

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Resources/Notes

ReadME

• https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet#images

Reactive

• https://docs.spring.io/spring-framework/docs/current/spring-framework-reference/web-reactive.html

RSocket

• https://dzone.com/articles/reactive-service-to-service-communication-with-rso-3
• http://www.vinsguru.com/rsocket-integrating-with-spring-boot/

RSocket Protobuf

• https://docs.netifi.com/1.5.3/protobuf_rsocket/

Jacoco config:

• https://medium.com/swlh/measuring-unit-test-coverage-in-multi-module-android-projects-using-jacoco-part-2-352ef949ecfb
• https://gist.github.com/fraggjkee/50f351f6ef4b75fea6d20d87dbba7f85

Unit tests

• https://josdem.io/techtalk/spring/spring_webflux_web_testing/

Jib

• https://github.com/GoogleContainerTools/jib/tree/master/examples/multi-module

GitHub Container Registry/Packages

• https://github.com/features/packages

echo $PAT | docker login ghcr.io --username phanatic --password-stdin

docker tag app ghcr.io/phanatic/app:1.0.0

docker push ghcr.io/phanatic/app:1.0.0

K8

-https://kubernetes.io/docs/reference/kubectl/cheatsheet/

Skaffold

• https://skaffold.dev/
• https://skaffold.dev/docs/references/yaml/

Commands	Description
skaffold init --XXenableJibInit	Initialise
skaffold dev	Apply K8s and monitor code for changes

Istio

• https://istio.io/latest/docs/reference/config/networking/virtual-service/
• Dashboad: istioctl dashboard kiali

Docker

Container comms issue:

• https://maximorlov.com/4-reasons-why-your-docker-containers-cant-talk-to-each-other/

Gradle

• https://github.com/jaredsburrows/cs-interview-questions
• Common gradle scripts
  • https://github.com/tomasbjerre/gradle-scripts/tree/master/src/main/resources
  • https://github.com/tomasbjerre/violations-lib

Release commands

• Plugin: https://github.com/researchgate/gradle-release
• Works locally, but not in git update actions. Get You have uncommitted files error.
• Commands:
  • gradlew release -Prelease.useAutomaticVersion=true
  • gradlew release -Prelease.useAutomaticVersion=true -Prelease.releaseVersion=1.0.0 -Prelease.newVersion=1.1.0-SNAPSHOT