Trace back everything (tested)

Signed-off-by: Asai Neko <sugar@sne.moe>

data/drivers/postgres.go

@@ -6,6 +6,8 @@ import (
 	"nixcn-cms/logger"
 	"strings"
 
+	"github.com/spf13/viper"
+	"go.opentelemetry.io/otel/attribute"
 	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
 	"gorm.io/plugin/opentelemetry/tracing"
@@ -20,13 +22,28 @@ func SplitHostPort(url string) (host, port string) {
 }
 
 func Postgres(dsn ExternalDSN) (*gorm.DB, error) {
+	serviceName := viper.GetString("database.service_name")
+
 	host, port := SplitHostPort(dsn.Host)
 	conn := "host=" + host + " user=" + dsn.Username + " password=" + dsn.Password + " dbname=" + dsn.Name + " port=" + port + " sslmode=disable TimeZone=" + config.TZ()
-	db, err := gorm.Open(postgres.Open(conn), &gorm.Config{Logger: logger.GormLogger()})
 
-	// Use otel gorm plugin
-	if err := db.Use(tracing.NewPlugin()); err != nil {
-		slog.Error("[Database] Error starting otel plugin!", "err", err)
+	db, err := gorm.Open(postgres.Open(conn), &gorm.Config{
+		Logger: logger.GormLogger(),
+	})
+	if err != nil {
+		return nil, err
 	}
+
+	err = db.Use(tracing.NewPlugin(
+		tracing.WithAttributes(
+			attribute.String("peer.service", serviceName),
+			attribute.String("db.instance", dsn.Name),
+		),
+	))
+
+	if err != nil {
+		slog.Error("[Database] Error starting otel plugin!", "name", serviceName, "err", err)
+	}
+
 	return db, err
 }