Prometheus: Add labels to all native histogram fields (#101812)

add labels to all histogram fields

pkg/promlib/converter/prom.go

@@ -674,6 +674,10 @@ func readMatrixOrVectorMulti(iter *sdkjsoniter.Iterator, resultType string, opt
 
 		if histogram != nil {
 			histogram.yMin.Labels = valueField.Labels
+			histogram.yMax.Labels = valueField.Labels
+			histogram.count.Labels = valueField.Labels
+			histogram.yLayout.Labels = valueField.Labels
+			histogram.time.Labels = valueField.Labels
 			frame := data.NewFrame(valueField.Name, histogram.time, histogram.yMin, histogram.yMax, histogram.count, histogram.yLayout)
 			frame.Meta = &data.FrameMeta{
 				Type: "heatmap-cells",

pkg/promlib/converter/testdata/prom-matrix-histogram-no-labels-frame.jsonc

@@ -46,7 +46,8 @@
             "type": "time",
             "typeInfo": {
               "frame": "time.Time"
-            }
+            },
+            "labels": {}
           },
           {
             "name": "yMin",
@@ -61,21 +62,24 @@
             "type": "number",
             "typeInfo": {
               "frame": "float64"
-            }
+            },
+            "labels": {}
           },
           {
             "name": "count",
             "type": "number",
             "typeInfo": {
               "frame": "float64"
-            }
+            },
+            "labels": {}
           },
           {
             "name": "yLayout",
             "type": "number",
             "typeInfo": {
               "frame": "int8"
-            }
+            },
+            "labels": {}
           }
         ]
       },

pkg/promlib/converter/testdata/prom-vector-histogram-no-labels-frame.jsonc

@@ -46,7 +46,8 @@
             "type": "time",
             "typeInfo": {
               "frame": "time.Time"
-            }
+            },
+            "labels": {}
           },
           {
             "name": "yMin",
@@ -61,21 +62,24 @@
             "type": "number",
             "typeInfo": {
               "frame": "float64"
-            }
+            },
+            "labels": {}
           },
           {
             "name": "count",
             "type": "number",
             "typeInfo": {
               "frame": "float64"
-            }
+            },
+            "labels": {}
           },
           {
             "name": "yLayout",
             "type": "number",
             "typeInfo": {
               "frame": "int8"
-            }
+            },
+            "labels": {}
           }
         ]
       },