Adding boilerplate files

Signed-off-by: Per Ploug <per.ploug@zalando.de>

example/main.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+func metricsHandler(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(200)
+	w.Write([]byte(fmt.Sprintf(`{"queue": {"length": %d}}`, size)))
+}
+
+var (
+	size int
+)
+
+func main() {
+	flag.IntVar(&size, "fake-queue-length", 10, "Fake queue length for fake metrics.")
+	flag.Parse()
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/metrics", metricsHandler)
+
+	server := &http.Server{
+		Addr:        ":9090",
+		Handler:     mux,
+		ReadTimeout: 5 * time.Second,
+	}
+
+	server.ListenAndServe()
+}