96 lines
2.9 KiB
Go
96 lines
2.9 KiB
Go
// Copyright 2022 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// A simple example of how to add fixed custom labels to all metrics exported by the origin collector.
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// For more details, see the documentation: https://pkg.go.dev/github.com/prometheus/client_golang/prometheus#WrapRegistererWith
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package main
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import (
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"flag"
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"log"
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"net/http"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/collectors"
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"github.com/prometheus/client_golang/prometheus/promauto"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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var addr = flag.String("listen-address", ":8080", "The address to listen on for HTTP requests.")
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func main() {
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flag.Parse()
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// Create a new registry.
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reg := prometheus.NewRegistry()
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reg.MustRegister(
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collectors.NewGoCollector(),
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collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
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)
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// We should see the following metrics with an extra source label. But
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// other collectors registered above are expected not to have the extra
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// label.
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// See also https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels-not-static-scraped-labels
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startFireKeeper(prometheus.WrapRegistererWith(prometheus.Labels{"component": "FireKeeper"}, reg))
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startSparkForge(prometheus.WrapRegistererWith(prometheus.Labels{"component": "SparkForge"}, reg))
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http.Handle("/metrics", promhttp.HandlerFor(reg, promhttp.HandlerOpts{}))
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log.Fatal(http.ListenAndServe(*addr, nil))
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}
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func startFireKeeper(reg prometheus.Registerer) {
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firesMaintained := promauto.With(reg).NewCounter(prometheus.CounterOpts{
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Name: "fires_maintained_total",
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Help: "Total number of fires maintained",
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})
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sparksDistributed := promauto.With(reg).NewCounter(prometheus.CounterOpts{
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Name: "sparks_distributed_total",
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Help: "Total number of sparks distributed",
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})
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go func() {
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for {
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time.Sleep(5 * time.Second)
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firesMaintained.Inc()
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log.Println("FireKeeper maintained a fire")
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}
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}()
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go func() {
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for {
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time.Sleep(7 * time.Second)
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sparksDistributed.Inc()
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log.Println("FireKeeper distributed a spark")
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}
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}()
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}
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func startSparkForge(reg prometheus.Registerer) {
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itemsForged := promauto.With(reg).NewCounter(prometheus.CounterOpts{
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Name: "items_forged_total",
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Help: "Total number of items forged",
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})
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go func() {
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for {
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time.Sleep(6 * time.Second)
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itemsForged.Inc()
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log.Println("SparkForge forged an item")
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}
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}()
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}
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