message: chore: update invoke parameter
diff: @@ -2,7 +2,6 @@ import {IEndPoint, IIndicator} from '../domain';
  import {MetricsMessengerServer} from '../util/MessengerUtil';
  import {IndicatorProxy} from '../indicator/IndicatorProxy';
  import {IndicatorResult} from '../indicator/IndicatorResult';
  -import {MetricsConstants} from '../MetricsConstants';
  const assert = require('assert');
  const debug = require('debug')('pandora:metrics:EndPoint');
  @@ -26,12 +25,13 @@ export class EndPoint implements IEndPoint {
  * @param appName
  * @param args
  */
  - invoke(appName: string = MetricsConstants.METRICS_DEFAULT_APP, args?: any) {
  + invoke(appName?: string, args?: any) {
  debug(`Invoke: EndPoint(${this.group}) start query appName = ${appName}, args = ${args}`);
  // query Indicator
  let indicators: IIndicator[] = this.indicators.filter((indicator: IndicatorProxy) => {
  + if(!appName) return true;
  return indicator.match(appName);
  });
  