Inspect: Transformers (#23598)

* WIP: Inspect transformers

* Updated

* Transformations working in inspect drawer and series to columns working as normal transformation

* Minor name change

* Updated

* Updated

* Fix: fixes crash with dataFrameIndex out of bounds

Co-authored-by: Hugo Häggmark <hugo.haggmark@grafana.com>

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

@@ -5,6 +5,7 @@ export { standardTransformers } from './transformers';
 export * from './fieldReducer';
 export { FilterFieldsByNameTransformerOptions } from './transformers/filterByName';
 export { FilterFramesByRefIdTransformerOptions } from './transformers/filterByRefId';
+export { SeriesToColumnsOptions } from './transformers/seriesToColumns';
 export { ReduceTransformerOptions } from './transformers/reduce';
 export { OrganizeFieldsTransformerOptions } from './transformers/organize';
 export { createOrderFieldsComparer } from './transformers/order';

packages/grafana-data/src/transformations/transformDataFrame.ts

@@ -13,7 +13,9 @@ export function transformDataFrame(options: DataTransformerConfig[], data: DataF
       return data;
     }
 
-    const transformer = info.transformation.transformer(config.options);
+    const defaultOptions = info.transformation.defaultOptions ?? {};
+    const options = { ...defaultOptions, ...config.options };
+    const transformer = info.transformation.transformer(options);
     const after = transformer(processed);
 
     // Add a key to the metadata if the data changed

packages/grafana-data/src/transformations/transformers/filter.ts

@@ -2,7 +2,6 @@ import { noopTransformer } from './noop';
 import { DataFrame, Field } from '../../types/dataFrame';
 import { DataTransformerID } from './ids';
 import { DataTransformerInfo, MatcherConfig } from '../../types/transformations';
-import { FieldMatcherID } from '../matchers/ids';
 import { getFieldMatcher, getFrameMatchers } from '../matchers';
 
 export interface FilterOptions {
@@ -14,9 +13,7 @@ export const filterFieldsTransformer: DataTransformerInfo<FilterOptions> = {
   id: DataTransformerID.filterFields,
   name: 'Filter Fields',
   description: 'select a subset of fields',
-  defaultOptions: {
-    include: { id: FieldMatcherID.numeric },
-  },
+  defaultOptions: {},
 
   /**
    * Return a modified copy of the series.  If the transform is not or should not

packages/grafana-data/src/transformations/transformers/seriesToColumns.ts

@@ -5,14 +5,16 @@ import { filterFieldsByNameTransformer } from './filterByName';
 import { ArrayVector } from '../../vector';
 
 export interface SeriesToColumnsOptions {
-  byField: string;
+  byField?: string;
 }
 
 export const seriesToColumnsTransformer: DataTransformerInfo<SeriesToColumnsOptions> = {
   id: DataTransformerID.seriesToColumns,
-  name: 'Series as Columns',
+  name: 'Series as columns',
   description: 'Groups series by field and returns values as columns',
-  defaultOptions: {},
+  defaultOptions: {
+    byField: 'Time',
+  },
   transformer: options => (data: DataFrame[]) => {
     const regex = `/^(${options.byField})$/`;
     // not sure if I should use filterFieldsByNameTransformer to get the key field

packages/grafana-ui/src/components/TransformersUI/OrganizeFieldsTransformerEditor.tsx

@@ -21,7 +21,7 @@ const OrganizeFieldsTransformerEditor: React.FC<OrganizeFieldsTransformerEditorP
   const { options, input, onChange } = props;
   const { indexByName, excludeByName, renameByName } = options;
 
-  const fieldNames = useMemo(() => fieldNamesFromInput(input), [input]);
+  const fieldNames = useMemo(() => getAllFieldNamesFromDataFrames(input), [input]);
   const orderedFieldNames = useMemo(() => orderFieldNamesByIndex(fieldNames, indexByName), [fieldNames, indexByName]);
 
   const onToggleVisibility = useCallback(
@@ -185,7 +185,7 @@ const orderFieldNamesByIndex = (fieldNames: string[], indexByName: Record<string
   return fieldNames.sort(comparer);
 };
 
-const fieldNamesFromInput = (input: DataFrame[]): string[] => {
+export const getAllFieldNamesFromDataFrames = (input: DataFrame[]): string[] => {
   if (!Array.isArray(input)) {
     return [] as string[];
   }

packages/grafana-ui/src/components/TransformersUI/SeriesToFieldsTransformerEditor.tsx

@@ -0,0 +1,47 @@
+import React, { useMemo, useCallback } from 'react';
+import {
+  DataTransformerID,
+  standardTransformers,
+  TransformerRegistyItem,
+  TransformerUIProps,
+  SeriesToColumnsOptions,
+  SelectableValue,
+} from '@grafana/data';
+import { getAllFieldNamesFromDataFrames } from './OrganizeFieldsTransformerEditor';
+import { Select } from '../Select/Select';
+
+export const SeriesToFieldsTransformerEditor: React.FC<TransformerUIProps<SeriesToColumnsOptions>> = ({
+  input,
+  options,
+  onChange,
+}) => {
+  const fieldNames = useMemo(() => getAllFieldNamesFromDataFrames(input), [input]);
+  const fieldNameOptions = fieldNames.map((item: string) => ({ label: item, value: item }));
+
+  const onSelectField = useCallback(
+    (value: SelectableValue<string>) => {
+      onChange({
+        ...options,
+        byField: value.value,
+      });
+    },
+    [onChange, options]
+  );
+
+  return (
+    <div className="gf-form-inline">
+      <div className="gf-form">
+        <div className="gf-form-label">Field</div>
+        <Select options={fieldNameOptions} value={options.byField} onChange={onSelectField} />
+      </div>
+    </div>
+  );
+};
+
+export const seriesToFieldsTransformerRegistryItem: TransformerRegistyItem<SeriesToColumnsOptions> = {
+  id: DataTransformerID.seriesToColumns,
+  editor: SeriesToFieldsTransformerEditor,
+  transformation: standardTransformers.seriesToColumnsTransformer,
+  name: 'Join by field',
+  description: 'Joins many time series / data frames by a field',
+};

packages/grafana-ui/src/utils/standardTransformers.ts

@@ -3,6 +3,7 @@ import { reduceTransformRegistryItem } from '../components/TransformersUI/Reduce
 import { filterFieldsByNameTransformRegistryItem } from '../components/TransformersUI/FilterByNameTransformerEditor';
 import { filterFramesByRefIdTransformRegistryItem } from '../components/TransformersUI/FilterByRefIdTransformerEditor';
 import { organizeFieldsTransformRegistryItem } from '../components/TransformersUI/OrganizeFieldsTransformerEditor';
+import { seriesToFieldsTransformerRegistryItem } from '../components/TransformersUI/SeriesToFieldsTransformerEditor';
 
 export const getStandardTransformers = (): Array<TransformerRegistyItem<any>> => {
   return [
@@ -10,5 +11,6 @@ export const getStandardTransformers = (): Array<TransformerRegistyItem<any>> =>
     filterFieldsByNameTransformRegistryItem,
     filterFramesByRefIdTransformRegistryItem,
     organizeFieldsTransformRegistryItem,
+    seriesToFieldsTransformerRegistryItem,
   ];
 };

public/app/features/dashboard/components/Inspector/InspectDataTab.tsx

@@ -1,21 +1,39 @@
 import React, { PureComponent } from 'react';
-import { DataFrame, applyFieldOverrides, toCSV, SelectableValue } from '@grafana/data';
-import { Button, Select, Icon, Table } from '@grafana/ui';
+import {
+  applyFieldOverrides,
+  DataFrame,
+  DataTransformerID,
+  SelectableValue,
+  toCSV,
+  transformDataFrame,
+} from '@grafana/data';
+import { Button, Field, Icon, Select, Table } from '@grafana/ui';
 import { getPanelInspectorStyles } from './styles';
 import { config } from 'app/core/config';
 import AutoSizer from 'react-virtualized-auto-sizer';
 import { saveAs } from 'file-saver';
+import { cx } from 'emotion';
 
 interface Props {
   data: DataFrame[];
-  dataFrameIndex: number;
   isLoading: boolean;
-  onSelectedFrameChanged: (item: SelectableValue<number>) => void;
 }
 
-export class InspectDataTab extends PureComponent<Props> {
+interface State {
+  transformId: DataTransformerID;
+  dataFrameIndex: number;
+  transformationOptions: Array<SelectableValue<string>>;
+}
+
+export class InspectDataTab extends PureComponent<Props, State> {
   constructor(props: Props) {
     super(props);
+
+    this.state = {
+      dataFrameIndex: 0,
+      transformId: DataTransformerID.noop,
+      transformationOptions: buildTransformationOptions(),
+    };
   }
 
   exportCsv = (dataFrame: DataFrame) => {
@@ -28,8 +46,44 @@ export class InspectDataTab extends PureComponent<Props> {
     saveAs(blob, dataFrame.name + '-' + new Date().getUTCDate() + '.csv');
   };
 
+  onSelectedFrameChanged = (item: SelectableValue<number>) => {
+    this.setState({ dataFrameIndex: item.value || 0 });
+  };
+
+  onTransformationChange = (value: SelectableValue<DataTransformerID>) => {
+    this.setState({ transformId: value.value, dataFrameIndex: 0 });
+  };
+
+  getTransformedData(): DataFrame[] {
+    const { transformId, transformationOptions } = this.state;
+    const { data } = this.props;
+
+    if (!data) {
+      return [];
+    }
+
+    const currentTransform = transformationOptions.find(item => item.value === transformId);
+
+    if (currentTransform && currentTransform.transformer.id !== DataTransformerID.noop) {
+      return transformDataFrame([currentTransform.transformer], data);
+    }
+    return data;
+  }
+
+  getProcessedData(): DataFrame[] {
+    return applyFieldOverrides({
+      data: this.getTransformedData(),
+      theme: config.theme,
+      fieldConfig: { defaults: {}, overrides: [] },
+      replaceVariables: (value: string) => {
+        return value;
+      },
+    });
+  }
+
   render() {
-    const { data, dataFrameIndex, isLoading, onSelectedFrameChanged } = this.props;
+    const { isLoading } = this.props;
+    const { dataFrameIndex, transformId, transformationOptions } = this.state;
     const styles = getPanelInspectorStyles();
 
     if (isLoading) {
@@ -40,36 +94,32 @@ export class InspectDataTab extends PureComponent<Props> {
       );
     }
 
-    if (!data || !data.length) {
+    const dataFrames = this.getProcessedData();
+
+    if (!dataFrames || !dataFrames.length) {
       return <div>No Data</div>;
     }
 
-    const choices = data.map((frame, index) => {
+    const choices = dataFrames.map((frame, index) => {
       return {
         value: index,
         label: `${frame.name} (${index})`,
       };
     });
 
-    const processed = applyFieldOverrides({
-      data,
-      theme: config.theme,
-      fieldConfig: { defaults: {}, overrides: [] },
-      replaceVariables: (value: string) => {
-        return value;
-      },
-    });
-
     return (
       <div className={styles.dataTabContent}>
         <div className={styles.toolbar}>
+          <Field label="Transformer" className="flex-grow-1">
+            <Select options={transformationOptions} value={transformId} onChange={this.onTransformationChange} />
+          </Field>
           {choices.length > 1 && (
-            <div className={styles.dataFrameSelect}>
-              <Select options={choices} value={dataFrameIndex} onChange={onSelectedFrameChanged} />
-            </div>
+            <Field label="Select result" className={cx(styles.toolbarItem, 'flex-grow-1')}>
+              <Select options={choices} value={dataFrameIndex} onChange={this.onSelectedFrameChanged} />
+            </Field>
           )}
           <div className={styles.downloadCsv}>
-            <Button variant="primary" onClick={() => this.exportCsv(processed[dataFrameIndex])}>
+            <Button variant="primary" onClick={() => this.exportCsv(dataFrames[dataFrameIndex])}>
               Download CSV
             </Button>
           </div>
@@ -83,7 +133,7 @@ export class InspectDataTab extends PureComponent<Props> {
 
               return (
                 <div style={{ width, height }}>
-                  <Table width={width} height={height} data={processed[dataFrameIndex]} />
+                  <Table width={width} height={height} data={dataFrames[dataFrameIndex]} />
                 </div>
               );
             }}
@@ -93,3 +143,25 @@ export class InspectDataTab extends PureComponent<Props> {
     );
   }
 }
+
+function buildTransformationOptions() {
+  const transformations: Array<SelectableValue<string>> = [
+    {
+      value: 'Do nothing',
+      label: 'None',
+      transformer: {
+        id: DataTransformerID.noop,
+      },
+    },
+    {
+      value: 'join by time',
+      label: 'Join by time',
+      transformer: {
+        id: DataTransformerID.seriesToColumns,
+        options: { byField: 'Time' },
+      },
+    },
+  ];
+
+  return transformations;
+}

public/app/features/dashboard/components/Inspector/PanelInspector.tsx

@@ -53,8 +53,6 @@ interface State {
   last: PanelData;
   // Data from the last response
   data: DataFrame[];
-  // The selected data frame
-  selectedDataFrame: number;
   // The Selected Tab
   currentTab: InspectTab;
   // If the datasource supports custom metadata
@@ -73,7 +71,6 @@ export class PanelInspectorUnconnected extends PureComponent<Props, State> {
       isLoading: true,
       last: {} as PanelData,
       data: [],
-      selectedDataFrame: 0,
       currentTab: props.defaultTab ?? InspectTab.Data,
       drawerWidth: '50%',
     };
@@ -165,10 +162,6 @@ export class PanelInspectorUnconnected extends PureComponent<Props, State> {
     this.setState({ currentTab: item.value || InspectTab.Data });
   };
 
-  onSelectedFrameChanged = (item: SelectableValue<number>) => {
-    this.setState({ selectedDataFrame: item.value || 0 });
-  };
-
   renderMetadataInspector() {
     const { metaDS, data } = this.state;
     if (!metaDS || !metaDS.components?.MetadataInspector) {
@@ -178,16 +171,8 @@ export class PanelInspectorUnconnected extends PureComponent<Props, State> {
   }
 
   renderDataTab() {
-    const { last, isLoading, selectedDataFrame } = this.state;
-
-    return (
-      <InspectDataTab
-        data={last.series}
-        isLoading={isLoading}
-        dataFrameIndex={selectedDataFrame}
-        onSelectedFrameChanged={this.onSelectedFrameChanged}
-      />
-    );
+    const { last, isLoading } = this.state;
+    return <InspectDataTab data={last.series} isLoading={isLoading} />;
   }
 
   renderErrorTab(error?: DataQueryError) {

public/app/features/dashboard/components/Inspector/QueryInspector.tsx

@@ -223,6 +223,7 @@ export class QueryInspector extends PureComponent<Props, State> {
               </Button>
             </CopyToClipboard>
           )}
+          <div className="flex-grow-1" />
         </div>
         <div className={styles.contentQueryInspector}>
           {isLoading && <LoadingPlaceholder text="Loading query inspector..." />}