Knative sticky revisions: example golang server

server.go

package main

import (
	"fmt"
	"net/http"
	"os"
)

func main() {
	// http request handler
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		// set header on response with revision name
		w.Header().Set("Knative-Serving-Tag", os.Getenv("K_REVISION"))
		fmt.Fprintln(w, "OK")
	})

	// start http server
	fmt.Println(http.ListenAndServe(":8080", nil))
}