main.go

package main

import (
	_ "context"
	"flag"
	"fmt"
	"github.com/go-kit/kit/log"
	"net/http"
	"net/http/pprof"
	"os"
	"os/signal"
	"syscall"
)

func main() {
	var (
		debugAddr = flag.String("debug.addr", ":3000", "Debug and metrics listen address")
		httpAddr  = flag.String("http.addr", ":8080", "HTTP listen address")
	)
	flag.Parse()

	// Logging.
	var logger log.Logger
	{
		logger = log.NewLogfmtLogger(os.Stderr)
		logger = log.NewContext(logger).With("ts", log.DefaultTimestampUTC)
		logger = log.NewContext(logger).With("caller", log.DefaultCaller)
	}

	// Mechanical.
	errc := make(chan error)
	//ctx := context.Background()

	// Interrupt.
	go func() {
		c := make(chan os.Signal, 1)
		signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
		errc <- fmt.Errorf("%s", <-c)
	}()

	// Debug.
	go func() {
		logger := log.NewContext(logger).With("transport", "debug")
		m := http.NewServeMux()
		m.Handle("/debug/pprof/", http.HandlerFunc(pprof.Index))
		m.Handle("/debug/pprof/cmdline", http.HandlerFunc(pprof.Cmdline))
		m.Handle("/debug/pprof/profile", http.HandlerFunc(pprof.Profile))
		m.Handle("/debug/pprof/symbol", http.HandlerFunc(pprof.Symbol))
		m.Handle("/debug/pprof/trace", http.HandlerFunc(pprof.Trace))
		logger.Log("addr", *debugAddr)
		errc <- http.ListenAndServe(*debugAddr, m)
	}()

	// App.
	go func() {
		logger := log.NewContext(logger).With("transport", "http")
		m := http.NewServeMux()
		logger.Log("addr", *httpAddr)
		errc <- http.ListenAndServe(*httpAddr, m)
	}()

	// Run.
	logger.Log("exit", <-errc)
}