grafana/public/app/plugins/panel/gauge/GaugePanel.tsx

// Libraries
import React, { PureComponent } from 'react';

// Services & Utils
import { processTimeSeries } from '@grafana/ui';

// Components
import { Gauge } from '@grafana/ui';

// Types
import { GaugeOptions } from './types';
import { PanelProps, NullValueMode } from '@grafana/ui/src/types';
import { ThemeProvider } from 'app/core/utils/ConfigProvider';

interface Props extends PanelProps<GaugeOptions> {}

export class GaugePanel extends PureComponent<Props> {
  render() {
    const { timeSeries, width, height, onInterpolate, options } = this.props;

    const prefix = onInterpolate(options.prefix);
    const suffix = onInterpolate(options.suffix);

    const vmSeries = processTimeSeries({
      timeSeries: timeSeries,
      nullValueMode: NullValueMode.Null,
    });

    return (
      <ThemeProvider>
        {(theme) => (
          <Gauge
            timeSeries={vmSeries}
            {...this.props.options}
            width={width}
            height={height}
            prefix={prefix}
            suffix={suffix}
            theme={theme}
          />
        )}
      </ThemeProvider>
    );
  }
}