go-http-server-with-otel/main.go

// This template contains a simple
// app with OTEL bootstrap that will create an
// HTTP server configured by environment that exports
// spans and metrics to an OTEL collector if configured
// to do so. Will also stand up a prometheus metrics
// endpoint.
//
// Configuration and logger stored in context
// Reference implementation of the provided packages
package main

import (
	"context"
	"net/http"
	"os"
	"os/signal"

	"github.com/rs/zerolog"
	"go.opentelemetry.io/otel/trace"
	"golang.org/x/sys/unix"

	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/app"
	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/config"
	"gitea.libretechconsulting.com/rmcguire/go-app/pkg/srv"
)

var (
	cfg    *config.AppConfig
	l      *zerolog.Logger
	tracer trace.Tracer
)

func main() {
	ctx, cncl := signal.NotifyContext(context.Background(), os.Interrupt, unix.SIGTERM)
	defer cncl()

	// Load configuration and setup logging
	ctx = app.MustSetupConfigAndLogging(ctx)

	// Prepare app
	app := &app.App{
		AppContext: ctx,
		HTTP: &app.AppHTTP{
			Funcs: []srv.HTTPFunc{
				{
					Path: "/test",
					HandlerFunc: func(w http.ResponseWriter, r *http.Request) {
						w.WriteHeader(http.StatusNotImplemented)
						w.Write([]byte("http test route"))
					},
				},
			},
		},
	}

	// Launch app
	app.MustRun()

	// Wait for app to complete
	// Perform any extra shutdown here
	<-app.Done()
}