start reworking exporters to be more composable

pkg/attr/attr.go

@@ -9,6 +9,7 @@ import (
 	"git.ma-al.com/gora_filip/pkg/level"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/semconv/v1.25.0"
+	"go.opentelemetry.io/otel/trace"
 )
 
 type IntoTraceAttribute interface {
@@ -19,6 +20,27 @@ type IntoTraceAttributes interface {
 	IntoTraceAttributes() []attribute.KeyValue
 }
 
+func CollectAttributes(attrs ...interface{}) []attribute.KeyValue {
+	collected := make([]attribute.KeyValue, len(attrs))
+	for _, a := range attrs {
+		switch a.(type) {
+		case []attribute.KeyValue:
+			collected = append(collected, a.([]attribute.KeyValue)...)
+		case attribute.KeyValue:
+			collected = append(collected, a.(attribute.KeyValue))
+		case IntoTraceAttribute:
+			collected = append(collected, a.(IntoTraceAttribute).IntoTraceAttribute())
+		case IntoTraceAttributes:
+			collected = append(collected, a.(IntoTraceAttributes).IntoTraceAttributes()...)
+		}
+	}
+	return collected
+}
+
+func WithAttributes(attrs ...interface{}) trace.SpanStartEventOption {
+	return trace.WithAttributes(CollectAttributes(attrs...)...)
+}
+
 const (
 	SeverityLevelKey           = attribute.Key("level")
 	LogMessageLongKey          = attribute.Key("log_message.long")