mirror of
https://github.com/denoland/deno.git
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e83ff62ccb
This commit starts splitting out the deno_web op crate into multiple smaller crates. This commit splits out WebIDL and URL API, but in the future I want to split out each spec into its own crate. That means we will have (in rough order of loading): `webidl`, `dom`, `streams`, `console`, `encoding`, `url`, `file`, `fetch`, `websocket`, and `webgpu` crates.
361 lines
11 KiB
Rust
361 lines
11 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use crate::inspector::DenoInspector;
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use crate::inspector::InspectorServer;
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use crate::inspector::InspectorSession;
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use crate::js;
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use crate::metrics::RuntimeMetrics;
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use crate::ops;
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use crate::permissions::Permissions;
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use deno_core::error::AnyError;
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use deno_core::futures::future::poll_fn;
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use deno_core::futures::future::FutureExt;
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use deno_core::futures::stream::StreamExt;
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use deno_core::serde_json;
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use deno_core::serde_json::json;
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use deno_core::url::Url;
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use deno_core::GetErrorClassFn;
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use deno_core::JsErrorCreateFn;
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use deno_core::JsRuntime;
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use deno_core::ModuleId;
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use deno_core::ModuleLoader;
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use deno_core::ModuleSpecifier;
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use deno_core::RuntimeOptions;
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use std::env;
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use std::rc::Rc;
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use std::sync::Arc;
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use std::task::Context;
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use std::task::Poll;
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/// This worker is created and used by almost all
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/// subcommands in Deno executable.
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///
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/// It provides ops available in the `Deno` namespace.
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///
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/// All `WebWorker`s created during program execution
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/// are descendants of this worker.
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pub struct MainWorker {
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inspector: Option<Box<DenoInspector>>,
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pub js_runtime: JsRuntime,
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should_break_on_first_statement: bool,
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}
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pub struct WorkerOptions {
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pub apply_source_maps: bool,
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/// Sets `Deno.args` in JS runtime.
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pub args: Vec<String>,
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pub debug_flag: bool,
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pub unstable: bool,
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pub ca_data: Option<Vec<u8>>,
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pub user_agent: String,
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pub seed: Option<u64>,
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pub module_loader: Rc<dyn ModuleLoader>,
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// Callback that will be invoked when creating new instance
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// of WebWorker
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pub create_web_worker_cb: Arc<ops::worker_host::CreateWebWorkerCb>,
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pub js_error_create_fn: Option<Rc<JsErrorCreateFn>>,
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pub attach_inspector: bool,
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pub maybe_inspector_server: Option<Arc<InspectorServer>>,
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pub should_break_on_first_statement: bool,
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/// Sets `Deno.version.deno` in JS runtime.
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pub runtime_version: String,
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/// Sets `Deno.version.typescript` in JS runtime.
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pub ts_version: String,
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/// Sets `Deno.noColor` in JS runtime.
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pub no_color: bool,
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pub get_error_class_fn: Option<GetErrorClassFn>,
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pub location: Option<Url>,
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}
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impl MainWorker {
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pub fn from_options(
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main_module: ModuleSpecifier,
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permissions: Permissions,
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options: &WorkerOptions,
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) -> Self {
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let mut js_runtime = JsRuntime::new(RuntimeOptions {
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module_loader: Some(options.module_loader.clone()),
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startup_snapshot: Some(js::deno_isolate_init()),
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js_error_create_fn: options.js_error_create_fn.clone(),
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get_error_class_fn: options.get_error_class_fn,
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..Default::default()
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});
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let inspector = if options.attach_inspector {
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Some(DenoInspector::new(
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&mut js_runtime,
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options.maybe_inspector_server.clone(),
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))
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} else {
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None
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};
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let should_break_on_first_statement =
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inspector.is_some() && options.should_break_on_first_statement;
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let mut worker = Self {
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inspector,
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js_runtime,
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should_break_on_first_statement,
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};
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let js_runtime = &mut worker.js_runtime;
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{
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// All ops registered in this function depend on these
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{
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let op_state = js_runtime.op_state();
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let mut op_state = op_state.borrow_mut();
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op_state.put(RuntimeMetrics::default());
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op_state.put::<Permissions>(permissions);
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op_state.put(ops::UnstableChecker {
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unstable: options.unstable,
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});
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}
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ops::runtime::init(js_runtime, main_module);
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ops::fetch::init(
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js_runtime,
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options.user_agent.clone(),
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options.ca_data.clone(),
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);
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ops::timers::init(js_runtime);
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ops::worker_host::init(
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js_runtime,
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None,
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options.create_web_worker_cb.clone(),
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);
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ops::crypto::init(js_runtime, options.seed);
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ops::reg_json_sync(js_runtime, "op_close", deno_core::op_close);
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ops::reg_json_sync(js_runtime, "op_resources", deno_core::op_resources);
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ops::url::init(js_runtime);
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ops::fs_events::init(js_runtime);
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ops::fs::init(js_runtime);
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ops::io::init(js_runtime);
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ops::net::init(js_runtime);
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ops::os::init(js_runtime);
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ops::permissions::init(js_runtime);
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ops::plugin::init(js_runtime);
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ops::process::init(js_runtime);
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ops::signal::init(js_runtime);
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ops::tls::init(js_runtime);
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ops::tty::init(js_runtime);
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ops::webgpu::init(js_runtime);
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ops::websocket::init(
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js_runtime,
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options.user_agent.clone(),
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options.ca_data.clone(),
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);
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}
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{
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let op_state = js_runtime.op_state();
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let mut op_state = op_state.borrow_mut();
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let t = &mut op_state.resource_table;
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let (stdin, stdout, stderr) = ops::io::get_stdio();
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if let Some(stream) = stdin {
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t.add(stream);
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}
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if let Some(stream) = stdout {
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t.add(stream);
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}
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if let Some(stream) = stderr {
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t.add(stream);
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}
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}
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worker
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}
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pub fn bootstrap(&mut self, options: &WorkerOptions) {
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let runtime_options = json!({
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"args": options.args,
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"applySourceMaps": options.apply_source_maps,
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"debugFlag": options.debug_flag,
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"denoVersion": options.runtime_version,
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"noColor": options.no_color,
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"pid": std::process::id(),
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"ppid": ops::runtime::ppid(),
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"target": env!("TARGET"),
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"tsVersion": options.ts_version,
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"unstableFlag": options.unstable,
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"v8Version": deno_core::v8_version(),
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"location": options.location,
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});
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let script = format!(
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"bootstrap.mainRuntime({})",
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serde_json::to_string_pretty(&runtime_options).unwrap()
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);
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self
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.execute(&script)
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.expect("Failed to execute bootstrap script");
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}
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/// Same as execute2() but the filename defaults to "$CWD/__anonymous__".
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pub fn execute(&mut self, js_source: &str) -> Result<(), AnyError> {
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let path = env::current_dir().unwrap().join("__anonymous__");
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let url = Url::from_file_path(path).unwrap();
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self.js_runtime.execute(url.as_str(), js_source)
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}
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/// Loads and instantiates specified JavaScript module.
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pub async fn preload_module(
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&mut self,
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module_specifier: &ModuleSpecifier,
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) -> Result<ModuleId, AnyError> {
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self.js_runtime.load_module(module_specifier, None).await
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}
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/// Loads, instantiates and executes specified JavaScript module.
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pub async fn execute_module(
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&mut self,
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module_specifier: &ModuleSpecifier,
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) -> Result<(), AnyError> {
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let id = self.preload_module(module_specifier).await?;
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self.wait_for_inspector_session();
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let mut receiver = self.js_runtime.mod_evaluate(id);
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tokio::select! {
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maybe_result = receiver.next() => {
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debug!("received module evaluate {:#?}", maybe_result);
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let result = maybe_result.expect("Module evaluation result not provided.");
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return result;
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}
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event_loop_result = self.run_event_loop() => {
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event_loop_result?;
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let maybe_result = receiver.next().await;
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let result = maybe_result.expect("Module evaluation result not provided.");
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return result;
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}
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}
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}
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fn wait_for_inspector_session(&mut self) {
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if self.should_break_on_first_statement {
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self
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.inspector
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.as_mut()
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.unwrap()
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.wait_for_session_and_break_on_next_statement()
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}
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}
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/// Create new inspector session. This function panics if Worker
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/// was not configured to create inspector.
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pub fn create_inspector_session(&mut self) -> Box<InspectorSession> {
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let inspector = self.inspector.as_mut().unwrap();
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InspectorSession::new(&mut **inspector)
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}
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pub fn poll_event_loop(
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&mut self,
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cx: &mut Context,
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) -> Poll<Result<(), AnyError>> {
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// We always poll the inspector if it exists.
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let _ = self.inspector.as_mut().map(|i| i.poll_unpin(cx));
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self.js_runtime.poll_event_loop(cx)
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}
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pub async fn run_event_loop(&mut self) -> Result<(), AnyError> {
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poll_fn(|cx| self.poll_event_loop(cx)).await
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}
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}
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impl Drop for MainWorker {
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fn drop(&mut self) {
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// The Isolate object must outlive the Inspector object, but this is
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// currently not enforced by the type system.
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self.inspector.take();
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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 deno_core::resolve_url_or_path;
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fn create_test_worker() -> MainWorker {
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let main_module = resolve_url_or_path("./hello.js").unwrap();
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let permissions = Permissions::default();
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let options = WorkerOptions {
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apply_source_maps: false,
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user_agent: "x".to_string(),
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args: vec![],
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debug_flag: false,
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unstable: false,
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ca_data: None,
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seed: None,
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js_error_create_fn: None,
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create_web_worker_cb: Arc::new(|_| unreachable!()),
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attach_inspector: false,
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maybe_inspector_server: None,
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should_break_on_first_statement: false,
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module_loader: Rc::new(deno_core::FsModuleLoader),
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runtime_version: "x".to_string(),
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ts_version: "x".to_string(),
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no_color: true,
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get_error_class_fn: None,
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location: None,
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};
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MainWorker::from_options(main_module, permissions, &options)
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}
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#[tokio::test]
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async fn execute_mod_esm_imports_a() {
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let p = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
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.parent()
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.unwrap()
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.join("cli/tests/esm_imports_a.js");
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let module_specifier = resolve_url_or_path(&p.to_string_lossy()).unwrap();
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let mut worker = create_test_worker();
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let result = worker.execute_module(&module_specifier).await;
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if let Err(err) = result {
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eprintln!("execute_mod err {:?}", err);
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}
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if let Err(e) = worker.run_event_loop().await {
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panic!("Future got unexpected error: {:?}", e);
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}
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}
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#[tokio::test]
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async fn execute_mod_circular() {
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let p = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
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.parent()
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.unwrap()
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.join("tests/circular1.js");
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let module_specifier = resolve_url_or_path(&p.to_string_lossy()).unwrap();
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let mut worker = create_test_worker();
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let result = worker.execute_module(&module_specifier).await;
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if let Err(err) = result {
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eprintln!("execute_mod err {:?}", err);
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}
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if let Err(e) = worker.run_event_loop().await {
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panic!("Future got unexpected error: {:?}", e);
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}
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}
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#[tokio::test]
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async fn execute_mod_resolve_error() {
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// "foo" is not a valid module specifier so this should return an error.
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let mut worker = create_test_worker();
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let module_specifier = resolve_url_or_path("does-not-exist").unwrap();
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let result = worker.execute_module(&module_specifier).await;
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assert!(result.is_err());
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}
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#[tokio::test]
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async fn execute_mod_002_hello() {
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// This assumes cwd is project root (an assumption made throughout the
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// tests).
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let mut worker = create_test_worker();
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let p = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
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.parent()
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.unwrap()
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.join("cli/tests/001_hello.js");
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let module_specifier = resolve_url_or_path(&p.to_string_lossy()).unwrap();
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let result = worker.execute_module(&module_specifier).await;
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assert!(result.is_ok());
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}
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}
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