grafana/public/app/plugins/datasource/loki/configuration/ConfigEditor.tsx

import React from 'react';

import { DataSourcePluginOptionsEditorProps, DataSourceSettings } from '@grafana/data';
import { config } from '@grafana/runtime';
import { AlertingSettings, DataSourceHttpSettings } from '@grafana/ui';

import { LokiOptions } from '../types';

import { DerivedFields } from './DerivedFields';
import { MaxLinesField } from './MaxLinesField';

export type Props = DataSourcePluginOptionsEditorProps<LokiOptions>;

const makeJsonUpdater =
  <T extends any>(field: keyof LokiOptions) =>
  (options: DataSourceSettings<LokiOptions>, value: T): DataSourceSettings<LokiOptions> => {
    return {
      ...options,
      jsonData: {
        ...options.jsonData,
        [field]: value,
      },
    };
  };

const setMaxLines = makeJsonUpdater('maxLines');
const setDerivedFields = makeJsonUpdater('derivedFields');

export const ConfigEditor = (props: Props) => {
  const { options, onOptionsChange } = props;

  return (
    <>
      <DataSourceHttpSettings
        defaultUrl={'http://localhost:3100'}
        dataSourceConfig={options}
        showAccessOptions={false}
        onChange={onOptionsChange}
        secureSocksDSProxyEnabled={config.secureSocksDSProxyEnabled}
      />

      <AlertingSettings<LokiOptions> options={options} onOptionsChange={onOptionsChange} />

      <MaxLinesField
        value={options.jsonData.maxLines || ''}
        onChange={(value) => onOptionsChange(setMaxLines(options, value))}
      />

      <DerivedFields
        value={options.jsonData.derivedFields}
        onChange={(value) => onOptionsChange(setDerivedFields(options, value))}
      />
    </>
  );
};