configmap

A simple watcher for handling updates to your Kubernetes ConfigMap files.

Installing

go get github.com/codykaup/configmap

Usage

The goal is to build a Watcher struct with simple names to easily determine what will happen when the ConfigMap updates or gets an error.

import (
	"fmt"

	"github.com/codykaup/configmap"
)

func main() {
	w := &configmap.Watcher{
		FilePath: "path/to/configmap",
		OnUpdate: func() {
			fmt.Println("configmap updated")
		},
		OnError: func(err error) {
			fmt.Println("error found")
		},
		OnFatal: func(err error) {
			panic("fatal error found")
		},
	}

	go w.Run()
	// or
	w.RunInBackground()
}

Keep in mind, OnFatal means the Watcher failed to get started and, thus, the ConfigMap is not being watched. You'll likely want to handle this error or fatal out as well.