Added OpenTelemetry config object

cmd/api-server/main.go

@@ -15,6 +15,9 @@ import (
 	"github.com/robindittmar/dttmr-api/internal/telemetry"
 )
 
+type Config struct {
+}
+
 func main() {
 	serviceName := "dttmr-api"
 	serviceVersion := "0.1.0"
@@ -32,13 +35,18 @@ func run(serviceName string, serviceVersion string) error {
 		Level: slog.LevelInfo,
 	})
 	traceHandler := &telemetry.TraceHandler{Handler: baseHandler}
-
 	logger := slog.New(traceHandler)
 	slog.SetDefault(logger)
 
 	slog.Info("Starting service", slog.String("service", serviceName), slog.String("version", serviceVersion))
 
-	shutdownTelemetry, err := telemetry.Init(context.Background(), serviceName, serviceVersion)
+	telCfg := telemetry.Config{
+		ServiceName:    serviceName,
+		ServiceVersion: serviceVersion,
+		Endpoint:       "localhost:4317",
+		Environment:    "development",
+	}
+	shutdownTelemetry, err := telemetry.Init(context.Background(), telCfg)
 	if err != nil {
 		slog.Error("Failed to initialize telemetry", err)
 		return err

internal/telemetry/otel.go

@@ -14,11 +14,18 @@ import (
 	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
 )
 
-func Init(ctx context.Context, serviceName string, version string) (func(context.Context) error, error) {
+type Config struct {
+	ServiceName    string
+	ServiceVersion string
+	Endpoint       string
+	Environment    string
+}
+
+func Init(ctx context.Context, cfg Config) (func(context.Context) error, error) {
 	res, err := resource.New(ctx,
 		resource.WithAttributes(
-			semconv.ServiceName(serviceName),
-			semconv.ServiceVersion(version),
+			semconv.ServiceName(cfg.ServiceName),
+			semconv.ServiceVersion(cfg.ServiceVersion),
 		),
 	)
 	if err != nil {
@@ -34,7 +41,7 @@ func Init(ctx context.Context, serviceName string, version string) (func(context
 
 	traceExporter, err := otlptracegrpc.New(ctx,
 		otlptracegrpc.WithInsecure(), // TODO: for local development
-		otlptracegrpc.WithEndpoint("localhost:4317"),
+		otlptracegrpc.WithEndpoint(cfg.Endpoint),
 	)
 	if err != nil {
 		return nil, err
@@ -47,7 +54,7 @@ func Init(ctx context.Context, serviceName string, version string) (func(context
 
 	metricExporter, err := otlpmetricgrpc.New(ctx,
 		otlpmetricgrpc.WithInsecure(),
-		otlpmetricgrpc.WithEndpoint("localhost:4317"),
+		otlpmetricgrpc.WithEndpoint(cfg.Endpoint),
 	)
 	if err != nil {
 		return nil, err