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// this project is heavily inspired by the prometheus golang client example project
// https://github.com/prometheus/client_golang/blob/master/examples/simple/main.go
package main
import (
"net/http"
"os"
"github.com/gorilla/handlers"
"github.com/gorilla/mux"
"github.com/prometheus/client_golang/prometheus"
promhttp "github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/sirupsen/logrus"
)
func main() {
var log = logrus.New()
// set the log output
log.Out = os.Stdout
// set the log level
log.Level = logrus.DebugLevel
// Routes consist of a path and a handler function.
r := mux.NewRouter()
// sample log.Info
log.Info("http server is ready")
// sample log.Debug
log.Debug("i am only visible in debug mode\n")
// exposes / endpoint with the YourHandler handler
r.HandleFunc("/", YourHandler)
// exposes /metrics endpoint with standard golang metrics used by prometheus
r.Handle("/metrics", promhttp.Handler())
// start a goroutine which start the polling for the metrics endpoint
SimpleGauge()
// wrap a logger around the mux server
logWrapper := handlers.LoggingHandler(os.Stdout, r)
metricsWrapper := prometheus.InstrumentHandler("metrics", logWrapper)
// Bind to a port and pass our loggedRouter in
log.Fatal(http.ListenAndServe(":8080", metricsWrapper))
}