// Copyright 2022 iLogtail Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package main

import (
	"github.com/prometheus/client_golang/prometheus"
	"github.com/prometheus/client_golang/prometheus/promhttp"
	"log"
	"net/http"
)

var reg = prometheus.NewRegistry()

func main() {
	counter := prometheus.NewCounter(prometheus.CounterOpts{
		Name: "test_counter",
		Help: "test counter",
	})
	reg.MustRegister(counter)

	promhttp.Handler()

	http.Handle("/metrics", promhttp.InstrumentMetricHandler(
		reg, promhttp.HandlerFor(reg, promhttp.HandlerOpts{}),
	))

	log.Fatal(http.ListenAndServe(":18080", nil))
}
