| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| import { debounce } from 'lodash'; |
| |
| class DebouncedMessageQueue { |
| constructor({ |
| callback = () => {}, |
| sizeThreshold = 1000, |
| delayThreshold = 1000, |
| }) { |
| this.queue = []; |
| this.sizeThreshold = sizeThreshold; |
| this.delayThrehold = delayThreshold; |
| |
| this.trigger = debounce(this.trigger.bind(this), this.delayThrehold); |
| this.callback = callback; |
| } |
| |
| append(eventData) { |
| this.queue.push(eventData); |
| this.trigger(); |
| } |
| |
| trigger() { |
| if (this.queue.length > 0) { |
| const events = this.queue.splice(0, this.sizeThreshold); |
| this.callback.call(null, events); |
| |
| // If there are remaining items, call it again. |
| if (this.queue.length > 0) { |
| this.trigger(); |
| } |
| } |
| } |
| } |
| |
| export default DebouncedMessageQueue; |