Deprecation: Create explicit feature toggle to auto-migrate from graph panel (#79369)

public/app/features/dashboard/state/DashboardModel.ts

@@ -44,7 +44,7 @@ import { getTimeSrv } from '../services/TimeSrv';
 import { mergePanels, PanelMergeInfo } from '../utils/panelMerge';
 
 import { DashboardMigrator } from './DashboardMigrator';
-import { PanelModel, autoMigrateAngular } from './PanelModel';
+import { PanelModel, autoMigrateAngular, explicitlyControlledMigrationPanels } from './PanelModel';
 import { TimeModel } from './TimeModel';
 import { deleteScopeVars, isOnTheSameGridRow } from './utils';
 
@@ -173,6 +173,12 @@ export class DashboardModel implements TimeModel {
     if (options?.autoMigrateOldPanels || !config.angularSupportEnabled || config.featureToggles.autoMigrateOldPanels) {
       for (const p of this.panelIterator()) {
         const newType = autoMigrateAngular[p.type];
+
+        // Skip explicitly controlled panels
+        if (explicitlyControlledMigrationPanels.includes(p.type)) {
+          continue;
+        }
+
         if (!p.autoMigrateFrom && newType) {
           p.autoMigrateFrom = p.type;
           p.type = newType;
@@ -180,6 +186,21 @@ export class DashboardModel implements TimeModel {
       }
     }
 
+    // Explicit handling of graph -> time series migration (and eventually others)
+    if (
+      options?.autoMigrateOldPanels ||
+      !config.angularSupportEnabled ||
+      config.featureToggles.autoMigrateOldPanels ||
+      config.featureToggles.autoMigrateGraphPanel
+    ) {
+      for (const p of this.panelIterator()) {
+        if (!p.autoMigrateFrom && p.type === 'graph') {
+          p.autoMigrateFrom = p.type;
+          p.type = 'timeseries';
+        }
+      }
+    }
+
     this.addBuiltInAnnotationQuery();
     this.sortPanelsByGridPos();
     this.panelsAffectedByVariableChange = null;