Zhihe Li
8abed1a809
* feat: 🎸 Add a shared service between web workers ✅ Closes: https://hashicorp.atlassian.net/browse/ICU-17409
47 lines
1.5 KiB
JavaScript
47 lines
1.5 KiB
JavaScript
/**
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* Copyright (c) HashiCorp, Inc.
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* SPDX-License-Identifier: BUSL-1.1
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*/
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import Service from '@ember/service';
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import { PWBHost } from 'promise-worker-bi';
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export default class SqliteDbService extends Service {
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// =attributes
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// We need a handle on the original web worker to properly clean it up.
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webWorker;
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// This will be the worker we interact with that is wrapped by PWBHost.
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worker;
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// TODO: Actually use the name that gets passed into setup later
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setup() {
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if (this.worker) {
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// If the worker already exists, we don't need to do anything.
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return;
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}
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// In production, our JS files will be fingerprinted with an MD5 hash
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// so we need a way to map the worker file name to be able to find it.
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//
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// Ember is automagically replacing any URL path with the fingerprinted
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// asset, and this is done by broccoli-asset-rev.
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//
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// The problem is it's a bit finicky as seen in this issue
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// https://github.com/ember-cli/broccoli-asset-rewrite/issues/66
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// and will not work properly if it's part of a template string or interpolated.
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// Therefore, we need the URL path in a string somewhere to be replaced properly.
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this.webWorker = new Worker('/workers/sqlite-worker.js', {
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type: 'module',
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});
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// We use PWBHost to simplify communication so we can just send and receive
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// messages with promises rather than having to manually set up event listeners
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this.worker = new PWBHost(this.webWorker);
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}
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willDestroy() {
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this.webWorker?.terminate();
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}
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}
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