70 lines
1.8 KiB
TypeScript
70 lines
1.8 KiB
TypeScript
import { safeRun } from "../util.ts";
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import { Sandbox } from "../sandbox.ts";
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import { WorkerLike } from "./worker.ts";
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import { Plug } from "../plug.ts";
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import { AssetBundle } from "../asset_bundle/bundle.ts";
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class DenoWorkerWrapper implements WorkerLike {
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private worker: Worker;
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onMessage?: (message: any) => Promise<void>;
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ready: Promise<void>;
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constructor(worker: Worker) {
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this.worker = worker;
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this.worker.addEventListener("message", (evt: any) => {
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const data = evt.data;
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if (!data) return;
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safeRun(async () => {
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await this.onMessage!(data);
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});
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});
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this.ready = Promise.resolve();
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}
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postMessage(message: any): void {
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this.worker.postMessage(message);
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}
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terminate() {
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return this.worker.terminate();
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}
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}
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import workerBundleJson from "./worker_bundle.json" assert { type: "json" };
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const workerBundle = new AssetBundle(workerBundleJson);
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export function createSandbox(plug: Plug<any>) {
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const workerHref = URL.createObjectURL(
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new Blob([
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workerBundle.readFileSync("worker.js"),
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], {
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type: "application/javascript",
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}),
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);
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const worker = new Worker(
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workerHref,
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{
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type: "module",
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deno: {
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permissions: {
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// Disallow network access
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net: false,
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// This is required for console logging to work, apparently?
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env: true,
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// No talking to native code
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ffi: false,
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// No invocation of shell commands
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run: false,
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// No read access to the file system
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read: false,
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// No write access to the file system
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write: false,
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},
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},
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// Have to do this because the "deno" option is not standard and doesn't typecheck yet
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} as any,
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);
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return new Sandbox(plug, new DenoWorkerWrapper(worker));
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}
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