From 43d4a593ae01dbd3a4f3b9a5e96f810eb5218901 Mon Sep 17 00:00:00 2001
From: Andrej Ocenas <mr.ocenas@gmail.com>
Date: Wed, 3 Mar 2021 18:31:10 +0100
Subject: [PATCH] Tracing: Small improvements to trace types (#31646)

---
 packages/grafana-data/src/types/trace.ts | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/packages/grafana-data/src/types/trace.ts b/packages/grafana-data/src/types/trace.ts
index d372cfb15eb..d5ab6166df6 100644
--- a/packages/grafana-data/src/types/trace.ts
+++ b/packages/grafana-data/src/types/trace.ts
@@ -1,9 +1,15 @@
-type TraceKeyValuePair = {
+/**
+ * Type representing a tag in a trace span or fields of a log.
+ */
+export type TraceKeyValuePair = {
   key: string;
   value: any;
 };
 
-type TraceLog = {
+/**
+ * Type representing a log in a span.
+ */
+export type TraceLog = {
   // Millisecond epoch time
   timestamp: number;
   fields: TraceKeyValuePair[];
@@ -16,7 +22,7 @@ type TraceLog = {
 export interface TraceSpanRow {
   traceID: string;
   spanID: string;
-  parentSpanID?: string;
+  parentSpanID: string | undefined;
   operationName: string;
   serviceName: string;
   serviceTags: TraceKeyValuePair[];