Firecli

This is a playground repository that explores building go cli commands using cobra.

Prerequisites

Follow instructions and install Docker Desktop from https://docs.docker.com/get-started/#download-and-install-docker-desktop

Getting started

Build the image with a named tag and run it:

docker build -t firecli .
echo "hello" | docker run -i firecli catsay

Before running any commands related to prometheus, let's start up two local services:

• demoapp on port 2112 - A toy Go application that instruments the prometheus /metrics endpoint
• prometheus on port 9000 - A local prometheus monitoring service

docker-compose -d up #-d for detached mode

We should then be able to visit localhost:9000 (prometheus) and localhost:2112/metrics (demoapp)

To stop these services:

docker-compose down

To delete the local volumes created run:

docker-compose down -v

Testing

To run tests locally:

go test -v ./... 

Misc Notes

This project was initialized from cobra project scaffolding at

Init scaffolding usage:

go install github.com/spf13/cobra/cobra
cobra init 
go run main.go

Or to add a command

cobra add commandname

Resources for putting together some basic docker/prometheus configs:

• https://dev.to/ablx/minimal-prometheus-setup-with-docker-compose-56mp
• https://prometheus.io/docs/guides/go-application/
• https://docs.docker.com/language/golang/build-images/