Plugins: Add tracing to pipeline (#115448)

pkg/semconv/plugins.go

@@ -0,0 +1,19 @@
+package semconv
+
+import (
+	"fmt"
+
+	"go.opentelemetry.io/otel/attribute"
+)
+
+// PluginSourceClass converts a plugin source class to the corresponding semantic convention attribute.
+func PluginSourceClass(class fmt.Stringer) attribute.KeyValue {
+	switch class.String() {
+	case "core":
+		return GrafanaPluginSourceClassCore
+	case "external":
+		return GrafanaPluginSourceClassExternal
+	default:
+		return GrafanaPluginSourceClassUnknown
+	}
+}