go-tools/cmd/mercury/main.go

package main

import (
	"context"
	"errors"
	"log"
	"log/slog"
	"net/http"
	"os"
	"os/signal"
	"strconv"

	"go.sour.is/pkg/env"
	"go.sour.is/pkg/lg"
	"go.sour.is/pkg/service"
)

var apps service.Apps
var appName, version = service.AppName()

func main() {
	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
	go func() {
		<-ctx.Done()
		defer cancel() // restore interrupt function
	}()
	if err := run(ctx); err != nil {
		log.Fatal(err)
		os.Exit(1)
	}
	os.Exit(0)
}
func run(ctx context.Context) error {
	level := slog.LevelError
	if ok, _ := strconv.ParseBool(env.Default("LOG_DEBUG", "TRUE")); ok {
		level = slog.LevelDebug
	}
	slog.SetDefault(slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{Level: level})))

	svc := &service.Harness{}
	os.Setenv("TRACE_ENDPOINT", "atombox:4318")
	os.Setenv("EV_TRACE_SAMPLE", "always")
	ctx, stop := lg.Init(ctx, appName+"-mercury")
	svc.OnStop(stop)

	svc.Add(lg.NewHTTP(ctx))
	svc.Setup(ctx, apps.Apps()...)

	// Run application
	if err := svc.Run(ctx, appName+"-mercury", version); err != nil && !errors.Is(err, http.ErrServerClosed) {
		return err
	}
	return nil
}