PanelLibrary: better handling of deleted panels (#30709)

devenv/dev-dashboards/panel-library/panel-library.json

@@ -142,7 +142,8 @@
       },
       "id": 3,
       "libraryPanel": {
-        "uid": "MAnX2ifMk"
+        "uid": "MAnX2ifMk",
+        "name": "React Table"
       }
     },
     {
@@ -154,7 +155,8 @@
       },
       "id": 2,
       "libraryPanel": {
-        "uid": "g1sNpCaMz"
+        "uid": "g1sNpCaMz",
+        "name": "React Gauge"
       }
     }
   ],

pkg/services/librarypanels/database.go

@@ -113,13 +113,20 @@ func (lps *LibraryPanelService) connectLibraryPanelsForDashboard(c *models.ReqCo
 
 // deleteLibraryPanel deletes a Library Panel.
 func (lps *LibraryPanelService) deleteLibraryPanel(c *models.ReqContext, uid string) error {
-	orgID := c.SignedInUser.OrgId
 	return lps.SQLStore.WithTransactionalDbSession(context.Background(), func(session *sqlstore.DBSession) error {
-		result, err := session.Exec("DELETE FROM library_panel WHERE uid=? and org_id=?", uid, orgID)
+		panel, err := getLibraryPanel(session, uid, c.SignedInUser.OrgId)
 		if err != nil {
 			return err
 		}
 
+		if _, err := session.Exec("DELETE FROM library_panel_dashboard WHERE librarypanel_id=?", panel.ID); err != nil {
+			return err
+		}
+
+		result, err := session.Exec("DELETE FROM library_panel WHERE id=?", panel.ID)
+		if err != nil {
+			return err
+		}
 		if rowsAffected, err := result.RowsAffected(); err != nil {
 			return err
 		} else if rowsAffected != 1 {

pkg/services/librarypanels/librarypanels.go

@@ -71,7 +71,16 @@ func (lps *LibraryPanelService) LoadLibraryPanelsForDashboard(dash *models.Dashb
 
 		libraryPanelInDB, ok := libraryPanels[uid]
 		if !ok {
-			return fmt.Errorf("found connection to library panel %q that isn't in database", uid)
+			name := libraryPanel.Get("name").MustString()
+			elem := dash.Data.Get("panels").GetIndex(i)
+			elem.Set("gridPos", panelAsJSON.Get("gridPos").MustMap())
+			elem.Set("id", panelAsJSON.Get("id").MustInt64())
+			elem.Set("type", fmt.Sprintf("Name: \"%s\", UID: \"%s\"", name, uid))
+			elem.Set("libraryPanel", map[string]interface{}{
+				"uid":  uid,
+				"name": name,
+			})
+			continue
 		}
 
 		// we have a match between what is stored in db and in dashboard json

pkg/services/librarypanels/librarypanels_test.go

@@ -650,7 +650,7 @@ func TestLoadLibraryPanelsForDashboard(t *testing.T) {
 			require.EqualError(t, err, errLibraryPanelHeaderUIDMissing.Error())
 		})
 
-	testScenario(t, "When an admin tries to load a dashboard with a library panel that is not connected, it should fail",
+	testScenario(t, "When an admin tries to load a dashboard with a library panel that is not connected, it should set correct JSON and continue",
 		func(t *testing.T, sc scenarioContext) {
 			command := getCreateCommand(1, "Text - Library Panel1")
 			response := sc.service.createHandler(sc.reqContext, command)
@@ -692,7 +692,38 @@ func TestLoadLibraryPanelsForDashboard(t *testing.T) {
 			}
 
 			err = sc.service.LoadLibraryPanelsForDashboard(&dash)
-			require.EqualError(t, err, fmt.Errorf("found connection to library panel %q that isn't in database", existing.Result.UID).Error())
+			require.NoError(t, err)
+			expectedJSON := map[string]interface{}{
+				"panels": []interface{}{
+					map[string]interface{}{
+						"id": int64(1),
+						"gridPos": map[string]interface{}{
+							"h": 6,
+							"w": 6,
+							"x": 0,
+							"y": 0,
+						},
+					},
+					map[string]interface{}{
+						"id": int64(2),
+						"gridPos": map[string]interface{}{
+							"h": 6,
+							"w": 6,
+							"x": 6,
+							"y": 0,
+						},
+						"libraryPanel": map[string]interface{}{
+							"uid":  existing.Result.UID,
+							"name": existing.Result.Name,
+						},
+						"type": fmt.Sprintf("Name: \"%s\", UID: \"%s\"", existing.Result.Name, existing.Result.UID),
+					},
+				},
+			}
+			expected := simplejson.NewFromAny(expectedJSON)
+			if diff := cmp.Diff(expected.Interface(), dash.Data.Interface(), getCompareOptions()...); diff != "" {
+				t.Fatalf("Result mismatch (-want +got):\n%s", diff)
+			}
 		})
 }