sample-go-app

Sample application written in Go. Here should be a description of what the purpose of the application is.

Run locally

Instructions how to run app locally.

go run cmd/sample-app/main.go

Build application

go build -o ./bin/sample-app cmd/sample-app/main.go

Run:

./bin/sample-app

Format code

gofmt -s -w .

How to use

Hello world:

% curl localhost:8000
Hello, world!

Get latest block of Volta network:

% curl localhost:8000/block
Latest block is: 21133370

Docker

Instructions how to run app with Docker.

docker run --rm -p 8000:8000 ghcr.io/energywebfoundation/sample-go-app:latest

Build docker image:

docker build --tag sample-go-app -f ./docker/Dockerfile .

Run local container:

docker run --rm -p 8000:8000 sample-go-app

Kubernetes

Instructions how to run app on Kubernetes.

helm install sample-app oci://ghcr.io/energywebfoundation/sample-go-app-helm

export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=sample-go-app,app.kubernetes.io/instance=sample-app" -o jsonpath="{.items[0].metadata.name}")
export CONTAINER_PORT=$(kubectl get pod --namespace default $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
kubectl --namespace default port-forward $POD_NAME $CONTAINER_PORT:$CONTAINER_PORT

% curl localhost:8000/block
Latest block is: 21133370
helm un sample-app