Azure: Fix duplicated trace links (#105698)

* Add trace links to first field

* Review

pkg/tsdb/azuremonitor/loganalytics/azure-log-analytics-datasource.go

@@ -599,7 +599,7 @@ func addTraceDataLinksToFields(query *AzureLogAnalyticsQuery, azurePortalBaseUrl
 				DatasourceName: dsInfo.DatasourceName,
 				Query:          queryJSONModel,
 			},
-		})
+		}, MultiField)
 
 		queryJSONModel.AzureTraces.Query = &query.TraceParentExploreQuery
 		AddCustomDataLink(*frame, data.DataLink{
@@ -610,7 +610,7 @@ func addTraceDataLinksToFields(query *AzureLogAnalyticsQuery, azurePortalBaseUrl
 				DatasourceName: dsInfo.DatasourceName,
 				Query:          queryJSONModel,
 			},
-		})
+		}, MultiField)
 
 		linkTitle := "Explore Trace in Azure Portal"
 		AddConfigLinks(*frame, tracesUrl, &linkTitle)
@@ -624,7 +624,7 @@ func addTraceDataLinksToFields(query *AzureLogAnalyticsQuery, azurePortalBaseUrl
 			DatasourceName: dsInfo.DatasourceName,
 			Query:          logsJSONModel,
 		},
-	})
+	}, SingleField)
 
 	return nil
 }

pkg/tsdb/azuremonitor/loganalytics/utils.go

@@ -16,17 +16,25 @@ import (
 	"github.com/grafana/grafana/pkg/tsdb/azuremonitor/kinds/dataquery"
 )
 
-func AddCustomDataLink(frame data.Frame, dataLink data.DataLink) data.Frame {
+func AddCustomDataLink(frame data.Frame, dataLink data.DataLink, singleField bool) data.Frame {
 	for i := range frame.Fields {
 		if frame.Fields[i].Config == nil {
 			frame.Fields[i].Config = &data.FieldConfig{}
 		}
 
 		frame.Fields[i].Config.Links = append(frame.Fields[i].Config.Links, dataLink)
+
+		// Queries using the trace viz only need the link added to a single field
+		if singleField {
+			break
+		}
 	}
 	return frame
 }
 
+const SingleField bool = true
+const MultiField bool = false
+
 func AddConfigLinks(frame data.Frame, dl string, title *string) data.Frame {
 	linkTitle := "View query in Azure Portal"
 	if title != nil {
@@ -39,7 +47,7 @@ func AddConfigLinks(frame data.Frame, dl string, title *string) data.Frame {
 		URL:         dl,
 	}
 
-	frame = AddCustomDataLink(frame, deepLink)
+	frame = AddCustomDataLink(frame, deepLink, MultiField)
 
 	return frame
 }