SearchV2: Fix reading library panels (#92961)

* Fix reading of library panel field
* Add test to check reading of library panel field

pkg/services/store/kind/dashboard/dashboard.go

@@ -396,9 +396,13 @@ func readpanelInfo(iter *jsoniter.Iterator, lookup DatasourceLookup) panelInfo {
 			panel.PluginVersion = iter.ReadString() // since 7x (the saved version for the plugin model)
 
 		case "libraryPanel":
-			var v map[string]string
+			var v map[string]interface{}
 			iter.ReadVal(&v)
-			panel.LibraryPanel = v["uid"]
+			if uid, ok := v["uid"]; ok {
+				if u, isString := uid.(string); isString {
+					panel.LibraryPanel = u
+				}
+			}
 
 		case "datasource":
 			targets.addDatasource(iter)

pkg/services/store/kind/dashboard/dashboard_test.go

@@ -70,6 +70,7 @@ func TestReadDashboard(t *testing.T) {
 		"mixed-datasource-with-variable",
 		"special-datasource-types",
 		"panels-without-datasources",
+		"panel-with-library-panel-field",
 	}
 
 	devdash := "../../../../../devenv/dev-dashboards/"

pkg/services/store/kind/dashboard/testdata/panel-with-library-panel-field-info.json

@@ -0,0 +1,30 @@
+{
+  "id": 345,
+  "title": "The libraryPanel field should get read properly despite the version being an integer",
+  "tags": null,
+  "datasource": [
+    {
+      "uid": "default.uid",
+      "type": "default.type"
+    }
+  ],
+  "panels": [
+    {
+      "id": 454,
+      "title": "Example title",
+      "type": "timeseries",
+      "libraryPanel": "dfkljg98345dkf",
+      "datasource": [
+        {
+          "uid": "default.uid",
+          "type": "default.type"
+        }
+      ]
+    }
+  ],
+  "schemaVersion": 39,
+  "linkCount": 0,
+  "timeFrom": "now-6h",
+  "timeTo": "now",
+  "timezone": ""
+}

pkg/services/store/kind/dashboard/testdata/panel-with-library-panel-field.json

@@ -0,0 +1,83 @@
+{
+    "annotations": {
+        "list": [
+            {
+                "builtIn": 1,
+                "datasource": {
+                    "type": "datasource",
+                    "uid": "grafana"
+                },
+                "enable": true,
+                "hide": true,
+                "iconColor": "rgba(0, 211, 255, 1)",
+                "name": "The libraryPanel field should get read properly despite the version being an integer",
+                "type": "dashboard"
+            }
+        ]
+    },
+    "editable": true,
+    "fiscalYearStartMonth": 0,
+    "graphTooltip": 0,
+    "id": 345,
+    "links": [],
+    "panels": [
+        {
+            "description": "",
+            "fieldConfig": {
+                "defaults": {},
+                "overrides": []
+            },
+            "gridPos": {
+                "h": 8,
+                "w": 12,
+                "x": 0,
+                "y": 15
+            },
+            "id": 454,
+            "libraryPanel": {
+                "name": "example name",
+                "uid": "dfkljg98345dkf",
+                "version": 2001
+            },
+            "options": {
+                "legend": {
+                    "calcs": [],
+                    "displayMode": "hidden",
+                    "placement": "bottom"
+                },
+                "tooltip": {
+                    "mode": "single"
+                }
+            },
+            "targets": [
+                {
+                    "datasource": {
+                        "type": "graphite",
+                        "uid": "000000001"
+                    },
+                    "refId": "A"
+                }
+            ],
+            "title": "Example title",
+            "transparent": true,
+            "type": "timeseries"
+        }
+    ],
+    "preload": false,
+    "refresh": "",
+    "schemaVersion": 39,
+    "tags": [],
+    "templating": {
+        "list": []
+    },
+    "time": {
+        "from": "now-6h",
+        "to": "now"
+    },
+    "timepicker": {},
+    "timezone": "",
+    "title": "The libraryPanel field should get read properly despite the version being an integer",
+    "uid": "sdjf03945834sdkf",
+    "version": 33,
+    "weekStart": ""
+}