mirror of
https://github.com/denoland/deno
synced 2024-11-05 18:45:24 +00:00
156 lines
4.1 KiB
Rust
156 lines
4.1 KiB
Rust
// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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use crate::ops;
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use crate::state::ThreadSafeState;
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use crate::worker::Worker;
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use crate::worker::WorkerChannels;
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use deno_core;
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use deno_core::ErrBox;
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use deno_core::StartupData;
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use futures::future::FutureExt;
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use std::future::Future;
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use std::ops::Deref;
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use std::ops::DerefMut;
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use std::pin::Pin;
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use std::task::Context;
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use std::task::Poll;
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/// This worker is implementation of `Worker` Web API
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///
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/// At the moment this type of worker supports only
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/// communication with parent and creating new workers.
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///
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/// Each `WebWorker` is either a child of `MainWorker` or other
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/// `WebWorker`.
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pub struct WebWorker(Worker);
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impl WebWorker {
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pub fn new(
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name: String,
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startup_data: StartupData,
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state: ThreadSafeState,
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external_channels: WorkerChannels,
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) -> Self {
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let state_ = state.clone();
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let mut worker = Worker::new(name, startup_data, state_, external_channels);
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{
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let isolate = &mut worker.isolate;
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ops::runtime::init(isolate, &state);
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ops::web_worker::init(isolate, &state);
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ops::worker_host::init(isolate, &state);
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ops::errors::init(isolate, &state);
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ops::timers::init(isolate, &state);
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ops::fetch::init(isolate, &state);
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}
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Self(worker)
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}
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}
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impl Deref for WebWorker {
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type Target = Worker;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl DerefMut for WebWorker {
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fn deref_mut(&mut self) -> &mut Self::Target {
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&mut self.0
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}
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}
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impl Future for WebWorker {
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type Output = Result<(), ErrBox>;
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fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
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let inner = self.get_mut();
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inner.0.poll_unpin(cx)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::startup_data;
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use crate::state::ThreadSafeState;
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use crate::tokio_util;
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fn create_test_worker() -> WebWorker {
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let (int, ext) = ThreadSafeState::create_channels();
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let state = ThreadSafeState::mock("./hello.js", int);
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let mut worker = WebWorker::new(
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"TEST".to_string(),
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startup_data::deno_isolate_init(),
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state,
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ext,
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);
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worker.execute("bootstrapWorkerRuntime(\"TEST\")").unwrap();
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worker.execute("runWorkerMessageLoop()").unwrap();
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worker
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}
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#[test]
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fn test_worker_messages() {
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let mut worker = create_test_worker();
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let source = r#"
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onmessage = function(e) {
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console.log("msg from main script", e.data);
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if (e.data == "exit") {
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delete self.onmessage;
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return;
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} else {
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console.assert(e.data === "hi");
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}
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postMessage([1, 2, 3]);
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console.log("after postMessage");
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}
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"#;
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worker.execute(source).unwrap();
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let handle = worker.thread_safe_handle();
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let _ = tokio_util::spawn_thread(move || tokio_util::run_basic(worker));
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tokio_util::run_basic(async move {
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let msg = json!("hi").to_string().into_boxed_str().into_boxed_bytes();
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let r = handle.post_message(msg.clone()).await;
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assert!(r.is_ok());
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let maybe_msg = handle.get_message().await;
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assert!(maybe_msg.is_some());
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let r = handle.post_message(msg.clone()).await;
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assert!(r.is_ok());
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let maybe_msg = handle.get_message().await;
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assert!(maybe_msg.is_some());
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assert_eq!(*maybe_msg.unwrap(), *b"[1,2,3]");
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let msg = json!("exit")
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.to_string()
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.into_boxed_str()
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.into_boxed_bytes();
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let r = handle.post_message(msg).await;
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assert!(r.is_ok());
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});
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}
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#[test]
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fn removed_from_resource_table_on_close() {
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let mut worker = create_test_worker();
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let handle = worker.thread_safe_handle();
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let worker_complete_fut = tokio_util::spawn_thread(move || {
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worker
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.execute("onmessage = () => { delete self.onmessage; }")
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.unwrap();
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tokio_util::run_basic(worker)
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});
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let msg = json!("hi").to_string().into_boxed_str().into_boxed_bytes();
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tokio_util::run_basic(async move {
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let r = handle.post_message(msg).await;
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assert!(r.is_ok());
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let r = worker_complete_fut.await;
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assert!(r.is_ok());
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});
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}
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}
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