observer/app/main.go

package main

import (
	"fmt"
	"log"
	"maal/tracer/pkg/tracer"
	"os"
	"os/signal"
	"time"

	"github.com/gofiber/fiber/v2"
	"go.opentelemetry.io/otel/trace"
)

func main() {

	main := fiber.New(fiber.Config{
		StreamRequestBody: true,
	})

	main.Use(tracer.NewTracer(tracer.Config{
		AppName:   "test",
		JaegerUrl: "http://localhost:4318/v1/traces",
		GelfUrl:   "192.168.220.30:12201",
		Version:   "1",
	}))
	defer tracer.ShutdownTracer()

	main.Get("/", func(c *fiber.Ctx) error {
		_, span := tracer.Handler(c)
		defer span.End()

		span.AddEvent("xd", trace.WithTimestamp(time.Now()))

		_, span = tracer.Handler(c)
		defer span.End()

		return c.SendString("xd")
	})

	// handle interrupts (shutdown)
	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt)
	go func() {
		oscall := <-c
		log.Printf("system call: %+v", oscall)
		main.Shutdown()
	}()
	if err := main.Listen(fmt.Sprintf(":%d", 3344)); err != nil {
		log.Panic(err)
	}
	fmt.Println("Shutting down...")

}