DashboardGrid: Add support to filter panels using variable (#77112)

* DashboardGrid panel filter

* Missed segment and changes per PR discussion

* Hide feature flag from docs

---------

Co-authored-by: Dominik Prokop <dominik.prokop@grafana.com>

.betterer.results

@@ -3292,7 +3292,7 @@ exports[`better eslint`] = {
       [0, 0, 0, "Use data-testid for E2E selectors instead of aria-label", "4"]
     ],
     "public/app/features/dashboard/dashgrid/DashboardGrid.tsx:5381": [
-      [0, 0, 0, "Unexpected any. Specify a different type.", "0"]
+      [0, 0, 0, "Do not use any type assertions.", "0"]
     ],
     "public/app/features/dashboard/dashgrid/DashboardPanel.tsx:5381": [
       [0, 0, 0, "Unexpected any. Specify a different type.", "0"]

packages/grafana-data/src/types/featureToggles.gen.ts

@@ -157,4 +157,5 @@ export interface FeatureToggles {
   annotationPermissionUpdate?: boolean;
   extractFieldsNameDeduplication?: boolean;
   dashboardSceneForViewers?: boolean;
+  panelFilterVariable?: boolean;
 }

pkg/services/featuremgmt/registry.go

@@ -974,5 +974,13 @@ var (
 			FrontendOnly: true,
 			Owner:        grafanaDashboardsSquad,
 		},
+		{
+			Name:         "panelFilterVariable",
+			Description:  "Enables use of the `systemPanelFilterVar` variable to filter panels in a dashboard",
+			Stage:        FeatureStageExperimental,
+			FrontendOnly: true,
+			Owner:        grafanaDashboardsSquad,
+			HideFromDocs: true,
+		},
 	}
 )

pkg/services/featuremgmt/toggles_gen.csv

@@ -138,3 +138,4 @@ alertmanagerRemoteOnly,experimental,@grafana/alerting-squad,false,false,false,fa
 annotationPermissionUpdate,experimental,@grafana/grafana-authnz-team,false,false,false,false
 extractFieldsNameDeduplication,experimental,@grafana/grafana-bi-squad,false,false,false,true
 dashboardSceneForViewers,experimental,@grafana/dashboards-squad,false,false,false,true
+panelFilterVariable,experimental,@grafana/dashboards-squad,false,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -562,4 +562,8 @@ const (
 	// FlagDashboardSceneForViewers
 	// Enables dashboard rendering using Scenes for viewer roles
 	FlagDashboardSceneForViewers = "dashboardSceneForViewers"
+
+	// FlagPanelFilterVariable
+	// Enables use of the `systemPanelFilterVar` variable to filter panels in a dashboard
+	FlagPanelFilterVariable = "panelFilterVariable"
 )

public/app/features/dashboard/dashgrid/DashboardGrid.test.tsx

@@ -1,23 +1,73 @@
-import { render } from '@testing-library/react';
+import { act, render, screen } from '@testing-library/react';
 import React from 'react';
+import { Provider } from 'react-redux';
+import { Router } from 'react-router-dom';
+import { useEffectOnce } from 'react-use';
+import { AutoSizerProps } from 'react-virtualized-auto-sizer';
+import { getGrafanaContextMock } from 'test/mocks/getGrafanaContextMock';
 
+import { TextBoxVariableModel } from '@grafana/data';
+import { locationService } from '@grafana/runtime';
 import { Dashboard } from '@grafana/schema';
+import appEvents from 'app/core/app_events';
+import { GrafanaContext } from 'app/core/context/GrafanaContext';
+import { GetVariables } from 'app/features/variables/state/selectors';
+import { VariablesChanged } from 'app/features/variables/types';
+import { configureStore } from 'app/store/configureStore';
 import { DashboardMeta } from 'app/types';
 
 import { DashboardModel } from '../state';
 import { createDashboardModelFixture } from '../state/__fixtures__/dashboardFixtures';
 
-import { DashboardGrid, Props } from './DashboardGrid';
+import { DashboardGrid, PANEL_FILTER_VARIABLE, Props } from './DashboardGrid';
 import { Props as LazyLoaderProps } from './LazyLoader';
 
+jest.mock('@grafana/runtime', () => ({
+  ...jest.requireActual('@grafana/runtime'),
+  config: {
+    ...jest.requireActual('@grafana/runtime').config,
+    featureToggles: {
+      panelFilterVariable: true,
+    },
+  },
+}));
+
 jest.mock('app/features/dashboard/dashgrid/LazyLoader', () => {
-  const LazyLoader = ({ children }: LazyLoaderProps) => {
+  const LazyLoader = ({ children, onLoad }: Pick<LazyLoaderProps, 'children' | 'onLoad'>) => {
-    return <>{children}</>;
+    useEffectOnce(() => {
+      onLoad?.();
+    });
+    return <>{typeof children === 'function' ? children({ isInView: true }) : children}</>;
   };
   return { LazyLoader };
 });
 
-function getTestDashboard(overrides?: Partial<Dashboard>, metaOverrides?: Partial<DashboardMeta>): DashboardModel {
+jest.mock('react-virtualized-auto-sizer', () => {
+  // The size of the children need to be small enough to be outside the view.
+  // So it does not trigger the query to be run by the PanelQueryRunner.
+  return ({ children }: AutoSizerProps) => children({ height: 1, width: 1 });
+});
+
+function setup(props: Props) {
+  const context = getGrafanaContextMock();
+  const store = configureStore({});
+
+  return render(
+    <GrafanaContext.Provider value={context}>
+      <Provider store={store}>
+        <Router history={locationService.getHistory()}>
+          <DashboardGrid {...props} />
+        </Router>
+      </Provider>
+    </GrafanaContext.Provider>
+  );
+}
+
+function getTestDashboard(
+  overrides?: Partial<Dashboard>,
+  metaOverrides?: Partial<DashboardMeta>,
+  getVariablesFromState?: GetVariables
+): DashboardModel {
   const data = Object.assign(
     {
       title: 'My dashboard',
@@ -30,20 +80,20 @@ function getTestDashboard(overrides?: Partial<Dashboard>, metaOverrides?: Partia
         },
         {
           id: 2,
-          type: 'graph2',
+          type: 'table',
-          title: 'My graph2',
+          title: 'My table',
           gridPos: { x: 0, y: 10, w: 25, h: 10 },
         },
         {
           id: 3,
-          type: 'graph3',
+          type: 'table',
-          title: 'My graph3',
+          title: 'My table 2',
           gridPos: { x: 0, y: 20, w: 25, h: 100 },
         },
         {
           id: 4,
-          type: 'graph4',
+          type: 'gauge',
-          title: 'My graph4',
+          title: 'My gauge',
           gridPos: { x: 0, y: 120, w: 25, h: 10 },
         },
       ],
@@ -51,17 +101,88 @@ function getTestDashboard(overrides?: Partial<Dashboard>, metaOverrides?: Partia
     overrides
   );
 
-  return createDashboardModelFixture(data, metaOverrides);
+  return createDashboardModelFixture(data, metaOverrides, getVariablesFromState);
 }
 
 describe('DashboardGrid', () => {
-  it('should render without error', () => {
+  it('Should render panels', async () => {
     const props: Props = {
       editPanel: null,
       viewPanel: null,
       isEditable: true,
       dashboard: getTestDashboard(),
     };
-    expect(() => render(<DashboardGrid {...props} />)).not.toThrow();
+
+    act(() => {
+      setup(props);
+    });
+
+    expect(await screen.findByText('My graph')).toBeInTheDocument();
+    expect(await screen.findByText('My table')).toBeInTheDocument();
+    expect(await screen.findByText('My table 2')).toBeInTheDocument();
+    expect(await screen.findByText('My gauge')).toBeInTheDocument();
+  });
+
+  it('Should allow filtering panels', async () => {
+    const props: Props = {
+      editPanel: null,
+      viewPanel: null,
+      isEditable: true,
+      dashboard: getTestDashboard(),
+    };
+    act(() => {
+      setup(props);
+    });
+
+    act(() => {
+      appEvents.publish(
+        new VariablesChanged({
+          panelIds: [],
+          refreshAll: false,
+          variable: {
+            type: 'textbox',
+            id: PANEL_FILTER_VARIABLE,
+            current: {
+              value: 'My graph',
+            },
+          } as TextBoxVariableModel,
+        })
+      );
+    });
+    const table = screen.queryByText('My table');
+    const table2 = screen.queryByText('My table 2');
+    const gauge = screen.queryByText('My gauge');
+
+    expect(await screen.findByText('My graph')).toBeInTheDocument();
+    expect(table).toBeNull();
+    expect(table2).toBeNull();
+    expect(gauge).toBeNull();
+  });
+
+  it('Should rendered filtered panels on init when filter variable is present', async () => {
+    const props: Props = {
+      editPanel: null,
+      viewPanel: null,
+      isEditable: true,
+      dashboard: getTestDashboard(undefined, undefined, () => [
+        {
+          id: PANEL_FILTER_VARIABLE,
+          type: 'textbox',
+          query: 'My tab',
+        } as TextBoxVariableModel,
+      ]),
+    };
+
+    act(() => {
+      setup(props);
+    });
+
+    const graph = screen.queryByText('My graph');
+    const gauge = screen.queryByText('My gauge');
+
+    expect(await screen.findByText('My table')).toBeInTheDocument();
+    expect(await screen.findByText('My table 2')).toBeInTheDocument();
+    expect(graph).toBeNull();
+    expect(gauge).toBeNull();
   });
 });

public/app/features/dashboard/dashgrid/DashboardGrid.tsx

@@ -5,8 +5,10 @@ import AutoSizer from 'react-virtualized-auto-sizer';
 import { Subscription } from 'rxjs';
 
 import { config } from '@grafana/runtime';
+import appEvents from 'app/core/app_events';
 import { GRID_CELL_HEIGHT, GRID_CELL_VMARGIN, GRID_COLUMN_COUNT } from 'app/core/constants';
 import { contextSrv } from 'app/core/services/context_srv';
+import { VariablesChanged } from 'app/features/variables/types';
 import { DashboardPanelsChangedEvent } from 'app/types/events';
 
 import { AddLibraryPanelWidget } from '../components/AddLibraryPanelWidget';
@@ -18,6 +20,8 @@ import { GridPos } from '../state/PanelModel';
 import DashboardEmpty from './DashboardEmpty';
 import { DashboardPanel } from './DashboardPanel';
 
+export const PANEL_FILTER_VARIABLE = 'systemPanelFilterVar';
+
 export interface Props {
   dashboard: DashboardModel;
   isEditable: boolean;
@@ -25,7 +29,12 @@ export interface Props {
   viewPanel: PanelModel | null;
   hidePanelMenus?: boolean;
 }
-export class DashboardGrid extends PureComponent<Props> {
+
+interface State {
+  panelFilter?: RegExp;
+}
+
+export class DashboardGrid extends PureComponent<Props, State> {
   private panelMap: { [key: string]: PanelModel } = {};
   private eventSubs = new Subscription();
   private windowHeight = 1200;
@@ -37,10 +46,43 @@ export class DashboardGrid extends PureComponent<Props> {
 
   constructor(props: Props) {
     super(props);
+    this.state = {
+      panelFilter: undefined,
+    };
   }
 
   componentDidMount() {
     const { dashboard } = this.props;
+
+    if (config.featureToggles.panelFilterVariable) {
+      // If panel filter variable is set on load then
+      // update state to filter panels
+      for (const variable of dashboard.getVariables()) {
+        if (variable.id === PANEL_FILTER_VARIABLE) {
+          if ('query' in variable) {
+            this.setPanelFilter(variable.query);
+          }
+          break;
+        }
+      }
+
+      this.eventSubs.add(
+        appEvents.subscribe(VariablesChanged, (e) => {
+          if (e.payload.variable?.id === PANEL_FILTER_VARIABLE) {
+            if ('current' in e.payload.variable) {
+              let variable = e.payload.variable.current;
+              if ('value' in variable) {
+                let value = variable.value;
+                if (typeof value === 'string') {
+                  this.setPanelFilter(value as string);
+                }
+              }
+            }
+          }
+        })
+      );
+    }
+
     this.eventSubs.add(dashboard.events.subscribe(DashboardPanelsChangedEvent, this.triggerForceUpdate));
   }
 
@@ -48,10 +90,25 @@ export class DashboardGrid extends PureComponent<Props> {
     this.eventSubs.unsubscribe();
   }
 
+  setPanelFilter(regex: string) {
+    // Only set the panels filter if the systemPanelFilterVar variable
+    // is a non-empty string
+    let panelFilter = undefined;
+    if (regex.length > 0) {
+      panelFilter = new RegExp(regex, 'i');
+    }
+
+    this.setState({
+      panelFilter: panelFilter,
+    });
+  }
+
   buildLayout() {
     const layout: ReactGridLayout.Layout[] = [];
     this.panelMap = {};
+    const { panelFilter } = this.state;
 
+    let count = 0;
     for (const panel of this.props.dashboard.panels) {
       if (!panel.key) {
         panel.key = `panel-${panel.id}-${Date.now()}`;
@@ -78,13 +135,27 @@ export class DashboardGrid extends PureComponent<Props> {
         panelPos.isDraggable = panel.collapsed;
       }
 
-      layout.push(panelPos);
+      if (!panelFilter) {
+        layout.push(panelPos);
+      } else {
+        if (panelFilter.test(panel.title)) {
+          panelPos.isResizable = false;
+          panelPos.isDraggable = false;
+          panelPos.x = (count % 2) * GRID_COLUMN_COUNT;
+          panelPos.y = Math.floor(count / 2);
+          layout.push(panelPos);
+          count++;
+        }
+      }
     }
 
     return layout;
   }
 
   onLayoutChange = (newLayout: ReactGridLayout.Layout[]) => {
+    if (this.state.panelFilter) {
+      return;
+    }
     for (const newPos of newLayout) {
       this.panelMap[newPos.i!].updateGridPos(newPos, this.isLayoutInitialized);
     }
@@ -136,6 +207,7 @@ export class DashboardGrid extends PureComponent<Props> {
   }
 
   renderPanels(gridWidth: number, isDashboardDraggable: boolean) {
+    const { panelFilter } = this.state;
     const panelElements = [];
 
     // Reset last panel bottom
@@ -156,7 +228,7 @@ export class DashboardGrid extends PureComponent<Props> {
       // requires parent create stacking context to prevent overlap with parent elements
       const descIndex = this.props.dashboard.panels.length - panelElements.length;
 
-      panelElements.push(
+      const p = (
         <GrafanaGridItem
           key={panel.key}
           className={panelClasses}
@@ -173,6 +245,14 @@ export class DashboardGrid extends PureComponent<Props> {
           }}
         </GrafanaGridItem>
       );
+
+      if (!panelFilter) {
+        panelElements.push(p);
+      } else {
+        if (panelFilter.test(panel.title)) {
+          panelElements.push(p);
+        }
+      }
     }
 
     return panelElements;
@@ -295,7 +375,7 @@ interface GrafanaGridItemProps extends React.HTMLAttributes<HTMLDivElement> {
   isViewing: boolean;
   windowHeight: number;
   windowWidth: number;
-  children: any;
+  children: any; // eslint-disable-line @typescript-eslint/no-explicit-any
 }
 
 /**

public/app/features/variables/state/actions.ts

@@ -623,6 +623,7 @@ export const variableUpdated = (
       : {
           refreshAll: false,
           panelIds: Array.from(getAllAffectedPanelIdsForVariableChange([variableInState.id], g, panelVars)),
+          variable: getVariable(identifier, state),
         };
 
     const node = g.getNode(variableInState.name);

public/app/features/variables/types.ts

@@ -8,6 +8,7 @@ import {
   QueryEditorProps,
   BaseVariableModel,
   VariableHide,
+  TypedVariableModel,
 } from '@grafana/data';
 export {
   /** @deprecated Import from @grafana/data instead */
@@ -95,6 +96,7 @@ export type VariableQueryEditorType<
 export interface VariablesChangedEvent {
   refreshAll: boolean;
   panelIds: number[];
+  variable?: TypedVariableModel;
 }
 
 export class VariablesChanged extends BusEventWithPayload<VariablesChangedEvent> {