Revolut Hello World

Development

To start your application in the dev profile, simply run:

./gradlew

dev profile uses h2 (In memory Database) as datastore

To make sure , app is running locally as expected, run

curl -X PUT http://localhost:8081/hello/krish -d '{"dateOfBirth":"1984-06-19"}'

curl -X GET http://localhost:8081/hello/krish -H 'Content-Type: application/json'

Building for production

To optimize the revolut hello world application for production, run:

./gradlew -Pprod clean bootWar

prod profile uses mysql as data store

Testing

To launch your application's tests, run:

./gradlew test

Build docker image using Google's jib

This project uses Google's jib to build docker image

To build a docker image of your app, run:

./gradlew bootWar -Pprod jibDockerBuild

Using Docker Compose to run application on local environment

To start a mysql database in a docker container, run:

docker-compose -f src/main/docker/mysql.yml up -d

To start your app, run:

docker-compose -f src/main/docker/app.yml up -d

To make sure , app is running locally as expected, run

curl -X PUT http://localhost:8081/hello/krish -d '{"dateOfBirth":"1984-06-19"}'

curl -X GET http://localhost:8081/hello/krish -H 'Content-Type: application/json'

Infrastructure

The serveice will be deplyed on Amazon EKS to incorporating scalability, stability, monitoring and disaster recovery.

Prerequisites

You need pre-provisioned EKS/GKE cluster

helm cli and tiller should be installed. Instructions on installing helm can be referred at https://github.com/helm/helm

Preparation

You will need to push your image to a registry. If you have not done so, use the following commands to tag and push the images:

$ docker tag revolut-helloworld <dockerhub_username>/revolut-helloworld
$ docker push <dockerhub_username>/revolut-helloworld

NB: the latest images has been pushed to pkrishnath/revolut-helloworld

Deployment

You can deploy all your apps by running the below bash command:

bash helm-apply.sh (or) ./helm-apply.sh

helm-apply.sh will always do a clean install. Any of the existing charts with the same identity gets removed first and then it does a clean install.

You can upgrade all your apps by running the below bash command:

bash helm-upgrade.sh (or) ./helm-upgrade.sh

Accessing app from kubernetes cluster

TODO: Ingress is not implemented

You can use kubectl port-forward command to access your application from localhost

eg: kubectl port-forward service/revolut-helloworld-helloworld-revolut 8081:8081 and application can be access via localhost:8081