correlating datadog logs and apm with chi trace and logrus packages in a http server

main.go

package main

import (
	"net/http"

	//	"os"
	"time"

	chitrace "gopkg.in/DataDog/dd-trace-go.v1/contrib/go-chi/chi.v5"
	ddlogrus "gopkg.in/DataDog/dd-trace-go.v1/contrib/sirupsen/logrus"

	"github.com/go-chi/chi/v5"
	"github.com/sirupsen/logrus"
)

func main() {
	// Ensure your tracer is started and stopped
	// Setup logrus, do this once at the beginning of your program
	//	logrus.SetFormatter(&logrus.JSONFormatter{})
	// hook takes the tracing info from a context and updates log fields
	logrus.AddHook(&ddlogrus.DDContextLogHook{})
	// logrus.SetOutput(os.Stdout)

	// span, sctx := tracer.StartSpanFromContext(context.Background(), "mySpan")
	// defer span.Finish()

	router := chi.NewRouter()

	// chitrace middleware injects trace info to request context
	router.Use(chitrace.Middleware(chitrace.WithAnalytics(true), chitrace.WithServiceName("chi.router")))

	router.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		// Pass the current span context to the logger (Time is set for consistency in output here)
		cLog := logrus.WithContext(r.Context()).WithTime(time.Date(2000, 1, 1, 1, 1, 1, 0, time.UTC))
		// Log as desired using the context-aware logger
		cLog.Info("Completed some work!")
		// Output:
		// {"dd.span_id":0,"dd.trace_id":0,"level":"info","msg":"Completed some work!","time":"2000-01-01T01:01:01Z"}
	})
	http.ListenAndServe(":8081", router)
}