grafana/public/app/plugins/datasource/cloudwatch/components/PanelQueryEditor.tsx

import React, { PureComponent } from 'react';
import { pick } from 'lodash';
import { QueryEditorProps, ExploreMode } from '@grafana/data';
import { Segment } from '@grafana/ui';
import { CloudWatchJsonData, CloudWatchQuery } from '../types';
import { CloudWatchDatasource } from '../datasource';
import { QueryInlineField } from './';
import { MetricsQueryEditor } from './MetricsQueryEditor';
import LogsQueryEditor from './LogsQueryEditor';

export type Props = QueryEditorProps<CloudWatchDatasource, CloudWatchQuery, CloudWatchJsonData>;

const apiModes = {
  Metrics: { label: 'CloudWatch Metrics', value: 'Metrics' },
  Logs: { label: 'CloudWatch Logs', value: 'Logs' },
};

export class PanelQueryEditor extends PureComponent<Props> {
  render() {
    const { query } = this.props;
    const apiMode = query.queryMode ?? 'Metrics';

    return (
      <>
        {/* TODO: Remove this in favor of the QueryHeader */}
        {apiMode === ExploreMode.Logs && (
          <QueryInlineField label="Query Mode">
            <Segment
              value={apiModes[apiMode]}
              options={Object.values(apiModes)}
              onChange={({ value }) => {
                const newMode = (value as 'Metrics' | 'Logs') ?? 'Metrics';
                if (newMode !== apiModes[apiMode].value) {
                  const commonProps = pick(
                    query,
                    'id',
                    'region',
                    'namespace',
                    'refId',
                    'hide',
                    'key',
                    'queryType',
                    'datasource'
                  );

                  this.props.onChange({
                    ...commonProps,
                    queryMode: newMode,
                  } as CloudWatchQuery);
                }
              }}
            />
          </QueryInlineField>
        )}
        {apiMode === ExploreMode.Logs ? (
          <LogsQueryEditor {...this.props} allowCustomValue />
        ) : (
          <MetricsQueryEditor {...this.props} />
        )}
      </>
    );
  }
}