文件操作 - PerformanceBackend.ts

文件: /usr/share/grafana/public/app/core/services/echo/backends/PerformanceBackend.ts

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import { EchoBackend, EchoEvent, EchoEventType } from '@grafana/runtime';

export interface PerformanceEventPayload {
  metricName: string;
  duration: number;
}

export interface PerformanceEvent extends EchoEvent<EchoEventType.Performance, PerformanceEventPayload> {}

export interface PerformanceBackendOptions {
  url?: string;
}

/**
 * Echo's performance metrics consumer
 * Reports performance metrics to given url (TODO)
 */
export class PerformanceBackend implements EchoBackend<PerformanceEvent, PerformanceBackendOptions> {
  private buffer: PerformanceEvent[] = [];
  supportedEvents = [EchoEventType.Performance];

constructor(public options: PerformanceBackendOptions) {}

addEvent = (e: EchoEvent) => {
    this.buffer.push(e);
  };

flush = () => {
    if (this.buffer.length === 0) {
      return;
    }

const result = {
      metrics: this.buffer,
    };

// Currently we don have API for sending the metrics hence loging to console in dev environment
    if (process.env.NODE_ENV === 'development') {
      console.log('PerformanceBackend flushing:', result);
    }

this.buffer = [];

// TODO: Enable backend request when we have metrics API
    // if (this.options.url) {
    // backendSrv.post(this.options.url, result);
    // }
  };
}

文件操作 - PerformanceBackend.ts

文件: /usr/share/grafana/public/app/core/services/echo/backends/PerformanceBackend.ts

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