@openhps/core/dist/esm5/nodes/shapes/ThrottleNode.js

Open Hybrid Positioning System - Core component

import { MemoryBufferNode } from './MemoryBufferNode';
/**
 * @category Flow shape
 */
export class ThrottleNode extends MemoryBufferNode {
  constructor(options) {
    super(options);
    this._pushReady = true;
    this.on('push', this.onThrottlePush.bind(this));
  }
  onThrottlePush() {
    return this._handlePush();
  }
  _handlePush() {
    return new Promise((resolve, reject) => {
      if (this._pushReady) {
        this._pushReady = false;
        this.onPull().then(() => {
          // Ready
          this._pushReady = true;
          return this.service.count();
        }).then(count => {
          if (count > 0) {
            setTimeout(this._handlePush.bind(this), 10);
          }
          resolve();
        }).catch(reject);
      } else {
        resolve();
      }
    });
  }
}