Plugins: Adds back getMappedValue to @grafana/data (#34746)

* Plugins: Adds back getMappedValue to @grafana/data

* Chore: fixes doc errors

* Tests: fixes snapshot

* Tests: dummy change to restart Drone

* Tests: tries to fix snapshot

packages/grafana-data/src/utils/index.ts

@@ -1,4 +1,5 @@
 import * as arrayUtils from './arrayUtils';
+
 export * from './Registry';
 export * from './datasource';
 export * from './deprecationWarning';
@@ -21,3 +22,12 @@ export { DocsId } from './docs';
 export { makeClassES5Compatible } from './makeClassES5Compatible';
 export { anyToNumber } from './anyToNumber';
 export { withLoadingIndicator, WithLoadingIndicatorOptions } from './withLoadingIndicator';
+export {
+  getMappedValue,
+  convertOldAngularValueMappings,
+  LegacyValueMapping,
+  LegacyValueMap,
+  LegacyRangeMap,
+  LegacyBaseMap,
+  LegacyMappingType,
+} from './valueMappings';

packages/grafana-data/src/utils/valueMappings.ts

@@ -1,4 +1,5 @@
-import { ValueMapping, MappingType, ValueMappingResult, SpecialValueMatch } from '../types';
+import { MappingType, SpecialValueMatch, ThresholdsConfig, ValueMap, ValueMapping, ValueMappingResult } from '../types';
+import { getActiveThreshold } from '../field';
 
 export function getValueMappingResult(valueMappings: ValueMapping[], value: any): ValueMappingResult | null {
   for (const vm of valueMappings) {
@@ -86,3 +87,205 @@ export function getValueMappingResult(valueMappings: ValueMapping[], value: any)
 export function isNumeric(num: any) {
   return (typeof num === 'number' || (typeof num === 'string' && num.trim() !== '')) && !isNaN(num as number);
 }
+
+/**
+ * @deprecated use MappingType instead
+ * @internal
+ */
+export enum LegacyMappingType {
+  ValueToText = 1,
+  RangeToText = 2,
+}
+
+/**
+ * @deprecated use MappingType instead
+ * @internal
+ */
+export interface LegacyBaseMap {
+  id: number; // this could/should just be the array index
+  text: string; // the final display value
+  type: LegacyMappingType;
+}
+
+/**
+ * @deprecated use ValueMapping instead
+ * @internal
+ */
+export type LegacyValueMapping = LegacyValueMap | LegacyRangeMap;
+
+/**
+ * @deprecated use ValueMap instead
+ * @internal
+ */
+export interface LegacyValueMap extends LegacyBaseMap {
+  value: string;
+}
+
+/**
+ * @deprecated use RangeMap instead
+ * @internal
+ */
+export interface LegacyRangeMap extends LegacyBaseMap {
+  from: string;
+  to: string;
+}
+
+/**
+ * @deprecated use getValueMappingResult instead
+ * @internal
+ */
+export function getMappedValue(valueMappings: LegacyValueMapping[], value: any): LegacyValueMapping {
+  const emptyResult = { type: LegacyMappingType.ValueToText, value: '', text: '', from: '', to: '', id: 0 };
+  if (!valueMappings?.length) {
+    return emptyResult;
+  }
+
+  const upgraded: ValueMapping[] = [];
+  for (const vm of valueMappings) {
+    if (isValueMapping(vm)) {
+      upgraded.push(vm);
+      continue;
+    }
+    upgraded.push(upgradeOldAngularValueMapping(vm));
+  }
+
+  if (!upgraded?.length) {
+    return emptyResult;
+  }
+
+  const result = getValueMappingResult(upgraded, value);
+  if (!result) {
+    return emptyResult;
+  }
+
+  return {
+    type: LegacyMappingType.ValueToText,
+    value: result.text,
+    text: result.text ?? '',
+    from: '',
+    to: '',
+    id: result.index ?? 0,
+  };
+}
+
+/**
+ * @alpha
+ * Converts the old Angular value mappings to new react style
+ */
+export function convertOldAngularValueMappings(panel: any): ValueMapping[] {
+  const mappings: ValueMapping[] = [];
+
+  // Guess the right type based on options
+  let mappingType = panel.mappingType;
+  if (!panel.mappingType) {
+    if (panel.valueMaps && panel.valueMaps.length) {
+      mappingType = 1;
+    } else if (panel.rangeMaps && panel.rangeMaps.length) {
+      mappingType = 2;
+    }
+  }
+
+  if (mappingType === 1) {
+    for (let i = 0; i < panel.valueMaps.length; i++) {
+      const map = panel.valueMaps[i];
+      mappings.push(
+        upgradeOldAngularValueMapping(
+          {
+            ...map,
+            id: i, // used for order
+            type: MappingType.ValueToText,
+          },
+          panel.fieldConfig?.defaults?.thresholds
+        )
+      );
+    }
+  } else if (mappingType === 2) {
+    for (let i = 0; i < panel.rangeMaps.length; i++) {
+      const map = panel.rangeMaps[i];
+      mappings.push(
+        upgradeOldAngularValueMapping(
+          {
+            ...map,
+            id: i, // used for order
+            type: MappingType.RangeToText,
+          },
+          panel.fieldConfig?.defaults?.thresholds
+        )
+      );
+    }
+  }
+
+  return mappings;
+}
+
+function upgradeOldAngularValueMapping(old: any, thresholds?: ThresholdsConfig): ValueMapping {
+  const valueMaps: ValueMap = { type: MappingType.ValueToText, options: {} };
+  const newMappings: ValueMapping[] = [];
+
+  // Use the color we would have picked from thesholds
+  let color: string | undefined = undefined;
+  const numeric = parseFloat(old.text);
+  if (thresholds && !isNaN(numeric)) {
+    const level = getActiveThreshold(numeric, thresholds.steps);
+    if (level && level.color) {
+      color = level.color;
+    }
+  }
+
+  switch (old.type) {
+    case LegacyMappingType.ValueToText:
+    case MappingType.ValueToText:
+      if (old.value != null) {
+        if (old.value === 'null') {
+          newMappings.push({
+            type: MappingType.SpecialValue,
+            options: {
+              match: SpecialValueMatch.Null,
+              result: { text: old.text, color },
+            },
+          });
+        } else {
+          valueMaps.options[String(old.value)] = {
+            text: old.text,
+            color,
+          };
+        }
+      }
+      break;
+    case LegacyMappingType.RangeToText:
+    case MappingType.RangeToText:
+      if (old.from === 'null' || old.to === 'null') {
+        newMappings.push({
+          type: MappingType.SpecialValue,
+          options: {
+            match: SpecialValueMatch.Null,
+            result: { text: old.text, color },
+          },
+        });
+      } else {
+        newMappings.push({
+          type: MappingType.RangeToText,
+          options: {
+            from: +old.from,
+            to: +old.to,
+            result: { text: old.text, color },
+          },
+        });
+      }
+      break;
+  }
+
+  if (Object.keys(valueMaps.options).length > 0) {
+    newMappings.unshift(valueMaps);
+  }
+
+  return newMappings[0];
+}
+
+function isValueMapping(map: any): map is ValueMapping {
+  if (!map) {
+    return false;
+  }
+
+  return map.hasOwnProperty('options') && typeof map.options === 'object';
+}

packages/grafana-ui/src/components/SingleStatShared/SingleStatBaseOptions.ts

@@ -1,20 +1,20 @@
 import { cloneDeep, isNumber, omit } from 'lodash';
 
 import {
-  fieldReducers,
-  Threshold,
-  sortThresholds,
+  convertOldAngularValueMappings,
+  FieldColorModeId,
   FieldConfig,
-  ReducerID,
-  ValueMapping,
-  MappingType,
-  VizOrientation,
+  fieldReducers,
   PanelModel,
   ReduceDataOptions,
-  ThresholdsMode,
+  ReducerID,
+  sortThresholds,
+  Threshold,
   ThresholdsConfig,
+  ThresholdsMode,
   validateFieldConfig,
-  FieldColorModeId,
+  ValueMapping,
+  VizOrientation,
 } from '@grafana/data';
 import { OptionsWithTextFormatting } from '../../options';
 
@@ -325,41 +325,9 @@ export function migrateOldThresholds(thresholds?: any[]): Threshold[] | undefine
 }
 
 /**
+ * @deprecated use convertOldAngularValueMappings instead
  * Convert the angular single stat mapping to new react style
  */
 export function convertOldAngularValueMapping(panel: any): ValueMapping[] {
-  const mappings: ValueMapping[] = [];
-
-  // Guess the right type based on options
-  let mappingType = panel.mappingType;
-  if (!panel.mappingType) {
-    if (panel.valueMaps && panel.valueMaps.length) {
-      mappingType = 1;
-    } else if (panel.rangeMaps && panel.rangeMaps.length) {
-      mappingType = 2;
-    }
-  }
-
-  // check value to text mappings if its enabled
-  if (mappingType === 1) {
-    for (let i = 0; i < panel.valueMaps.length; i++) {
-      const map = panel.valueMaps[i];
-      mappings.push({
-        ...map,
-        id: i, // used for order
-        type: MappingType.ValueToText,
-      });
-    }
-  } else if (mappingType === 2) {
-    for (let i = 0; i < panel.rangeMaps.length; i++) {
-      const map = panel.rangeMaps[i];
-      mappings.push({
-        ...map,
-        id: i, // used for order
-        type: MappingType.RangeToText,
-      });
-    }
-  }
-
-  return mappings;
+  return convertOldAngularValueMappings(panel);
 }

public/app/features/explore/Wrapper.test.tsx

@@ -256,7 +256,6 @@ describe('Wrapper', () => {
 
   it('changes the document title of the explore page', async () => {
     setup({ datasources: [] });
-    await waitFor(() => expect(document.querySelector('head')).toMatchSnapshot());
     await waitFor(() => expect(document.title).toEqual('Explore - Grafana'));
   });
 });