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denoland-deno/cli/worker.rs

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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use std::path::PathBuf;
use std::sync::Arc;
use deno_ast::ModuleSpecifier;
use deno_core::error::AnyError;
use deno_core::futures::task::LocalFutureObj;
use deno_core::futures::FutureExt;
use deno_core::located_script_name;
use deno_core::Extension;
use deno_core::ModuleId;
use deno_runtime::colors;
use deno_runtime::deno_node;
use deno_runtime::deno_node::NodeResolution;
use deno_runtime::fmt_errors::format_js_error;
use deno_runtime::ops::worker_host::CreateWebWorkerCb;
use deno_runtime::ops::worker_host::WorkerEventCb;
use deno_runtime::permissions::PermissionsContainer;
use deno_runtime::web_worker::WebWorker;
use deno_runtime::web_worker::WebWorkerOptions;
use deno_runtime::worker::MainWorker;
use deno_runtime::worker::WorkerOptions;
use deno_runtime::BootstrapOptions;
use deno_semver::npm::NpmPackageReqReference;
use crate::args::DenoSubcommand;
use crate::errors;
use crate::module_loader::CliModuleLoader;
use crate::ops;
use crate::proc_state::ProcState;
use crate::tools;
use crate::tools::coverage::CoverageCollector;
use crate::util::checksum;
use crate::version;
pub struct CliMainWorker {
main_module: ModuleSpecifier,
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is_main_cjs: bool,
worker: MainWorker,
ps: ProcState,
}
impl CliMainWorker {
pub fn into_main_worker(self) -> MainWorker {
self.worker
}
pub async fn setup_repl(&mut self) -> Result<(), AnyError> {
self.worker.run_event_loop(false).await?;
Ok(())
}
pub async fn run(&mut self) -> Result<i32, AnyError> {
let mut maybe_coverage_collector =
self.maybe_setup_coverage_collector().await?;
log::debug!("main_module {}", self.main_module);
if self.is_main_cjs {
self.initialize_main_module_for_node()?;
deno_node::load_cjs_module(
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&mut self.worker.js_runtime,
&self.main_module.to_file_path().unwrap().to_string_lossy(),
true,
self.ps.options.inspect_brk().is_some(),
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)?;
} else {
self.execute_main_module_possibly_with_npm().await?;
}
self.worker.dispatch_load_event(located_script_name!())?;
loop {
self
.worker
.run_event_loop(maybe_coverage_collector.is_none())
.await?;
if !self
.worker
.dispatch_beforeunload_event(located_script_name!())?
{
break;
}
}
self.worker.dispatch_unload_event(located_script_name!())?;
if let Some(coverage_collector) = maybe_coverage_collector.as_mut() {
self
.worker
.with_event_loop(coverage_collector.stop_collecting().boxed_local())
.await?;
}
Ok(self.worker.exit_code())
}
pub async fn run_for_watcher(self) -> Result<(), AnyError> {
/// The FileWatcherModuleExecutor provides module execution with safe dispatching of life-cycle events by tracking the
/// state of any pending events and emitting accordingly on drop in the case of a future
/// cancellation.
struct FileWatcherModuleExecutor {
inner: CliMainWorker,
pending_unload: bool,
}
impl FileWatcherModuleExecutor {
pub fn new(worker: CliMainWorker) -> FileWatcherModuleExecutor {
FileWatcherModuleExecutor {
inner: worker,
pending_unload: false,
}
}
/// Execute the given main module emitting load and unload events before and after execution
/// respectively.
pub async fn execute(&mut self) -> Result<(), AnyError> {
self.inner.execute_main_module_possibly_with_npm().await?;
self
.inner
.worker
.dispatch_load_event(located_script_name!())?;
self.pending_unload = true;
let result = loop {
match self.inner.worker.run_event_loop(false).await {
Ok(()) => {}
Err(error) => break Err(error),
}
match self
.inner
.worker
.dispatch_beforeunload_event(located_script_name!())
{
Ok(default_prevented) if default_prevented => {} // continue loop
Ok(_) => break Ok(()),
Err(error) => break Err(error),
}
};
self.pending_unload = false;
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result?;
self
.inner
.worker
.dispatch_unload_event(located_script_name!())?;
Ok(())
}
}
impl Drop for FileWatcherModuleExecutor {
fn drop(&mut self) {
if self.pending_unload {
let _ = self
.inner
.worker
.dispatch_unload_event(located_script_name!());
}
}
}
let mut executor = FileWatcherModuleExecutor::new(self);
executor.execute().await
}
pub async fn execute_main_module_possibly_with_npm(
&mut self,
) -> Result<(), AnyError> {
let id = self.worker.preload_main_module(&self.main_module).await?;
self.evaluate_module_possibly_with_npm(id).await
}
pub async fn execute_side_module_possibly_with_npm(
&mut self,
) -> Result<(), AnyError> {
let id = self.worker.preload_side_module(&self.main_module).await?;
self.evaluate_module_possibly_with_npm(id).await
}
async fn evaluate_module_possibly_with_npm(
&mut self,
id: ModuleId,
) -> Result<(), AnyError> {
if self.ps.npm_resolver.has_packages()
|| self.ps.graph_container.graph().has_node_specifier
{
self.initialize_main_module_for_node()?;
}
self.worker.evaluate_module(id).await
}
fn initialize_main_module_for_node(&mut self) -> Result<(), AnyError> {
let mut maybe_binary_command_name = None;
if let DenoSubcommand::Run(flags) = self.ps.options.sub_command() {
if let Ok(pkg_ref) = NpmPackageReqReference::from_str(&flags.script) {
// if the user ran a binary command, we'll need to set process.argv[0]
// to be the name of the binary command instead of deno
let binary_name = pkg_ref
.sub_path
.as_deref()
.unwrap_or(pkg_ref.req.name.as_str());
maybe_binary_command_name = Some(binary_name.to_string());
}
}
deno_node::initialize_runtime(
&mut self.worker.js_runtime,
self.ps.options.has_node_modules_dir(),
maybe_binary_command_name,
)?;
Ok(())
}
pub async fn maybe_setup_coverage_collector(
&mut self,
) -> Result<Option<CoverageCollector>, AnyError> {
if let Some(ref coverage_dir) = self.ps.options.coverage_dir() {
let session = self.worker.create_inspector_session().await;
let coverage_dir = PathBuf::from(coverage_dir);
let mut coverage_collector =
tools::coverage::CoverageCollector::new(coverage_dir, session);
self
.worker
.with_event_loop(coverage_collector.start_collecting().boxed_local())
.await?;
Ok(Some(coverage_collector))
} else {
Ok(None)
}
}
}
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pub async fn create_main_worker(
ps: &ProcState,
main_module: ModuleSpecifier,
permissions: PermissionsContainer,
) -> Result<CliMainWorker, AnyError> {
create_custom_worker(ps, main_module, permissions, vec![], Default::default())
.await
}
pub async fn create_custom_worker(
ps: &ProcState,
main_module: ModuleSpecifier,
permissions: PermissionsContainer,
mut custom_extensions: Vec<Extension>,
stdio: deno_runtime::deno_io::Stdio,
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) -> Result<CliMainWorker, AnyError> {
let (main_module, is_main_cjs) = if let Ok(package_ref) =
NpmPackageReqReference::from_specifier(&main_module)
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{
ps.npm_resolver
.add_package_reqs(vec![package_ref.req.clone()])
.await?;
let node_resolution =
ps.node_resolver.resolve_binary_export(&package_ref)?;
let is_main_cjs = matches!(node_resolution, NodeResolution::CommonJs(_));
(node_resolution.into_url(), is_main_cjs)
} else if ps.options.is_npm_main() {
let node_resolution =
ps.node_resolver.url_to_node_resolution(main_module)?;
let is_main_cjs = matches!(node_resolution, NodeResolution::CommonJs(_));
(node_resolution.into_url(), is_main_cjs)
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} else {
(main_module, false)
};
let module_loader = CliModuleLoader::new(
ps.clone(),
PermissionsContainer::allow_all(),
permissions.clone(),
);
let maybe_inspector_server = ps.maybe_inspector_server.clone();
let create_web_worker_cb =
create_web_worker_callback(ps.clone(), stdio.clone());
let web_worker_preload_module_cb =
create_web_worker_preload_module_callback(ps.clone());
let web_worker_pre_execute_module_cb =
create_web_worker_pre_execute_module_callback(ps.clone());
let maybe_storage_key = ps.options.resolve_storage_key(&main_module);
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let origin_storage_dir = maybe_storage_key.as_ref().map(|key| {
ps.dir
.origin_data_folder_path()
.join(checksum::gen(&[key.as_bytes()]))
});
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let cache_storage_dir = maybe_storage_key.map(|key| {
// TODO(@satyarohith): storage quota management
// Note: we currently use temp_dir() to avoid managing storage size.
std::env::temp_dir()
.join("deno_cache")
.join(checksum::gen(&[key.as_bytes()]))
});
let mut extensions = ops::cli_exts(ps.npm_resolver.clone());
extensions.append(&mut custom_extensions);
let options = WorkerOptions {
bootstrap: BootstrapOptions {
args: ps.options.argv().clone(),
cpu_count: std::thread::available_parallelism()
.map(|p| p.get())
.unwrap_or(1),
debug_flag: ps
.options
.log_level()
.map(|l| l == log::Level::Debug)
.unwrap_or(false),
enable_testing_features: ps.options.enable_testing_features(),
locale: deno_core::v8::icu::get_language_tag(),
location: ps.options.location_flag().clone(),
no_color: !colors::use_color(),
is_tty: colors::is_tty(),
runtime_version: version::deno().to_string(),
ts_version: version::TYPESCRIPT.to_string(),
unstable: ps.options.unstable(),
user_agent: version::get_user_agent().to_string(),
inspect: ps.options.is_inspecting(),
},
extensions,
startup_snapshot: Some(crate::js::deno_isolate_init()),
unsafely_ignore_certificate_errors: ps
.options
.unsafely_ignore_certificate_errors()
.clone(),
root_cert_store: Some(ps.root_cert_store.clone()),
seed: ps.options.seed(),
source_map_getter: Some(Box::new(module_loader.clone())),
format_js_error_fn: Some(Arc::new(format_js_error)),
create_web_worker_cb,
web_worker_preload_module_cb,
web_worker_pre_execute_module_cb,
maybe_inspector_server,
should_break_on_first_statement: ps.options.inspect_brk().is_some(),
should_wait_for_inspector_session: ps.options.inspect_wait().is_some(),
module_loader,
node_fs: Some(ps.node_fs.clone()),
npm_resolver: Some(ps.npm_resolver.clone()),
get_error_class_fn: Some(&errors::get_error_class_name),
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cache_storage_dir,
origin_storage_dir,
blob_store: ps.blob_store.clone(),
broadcast_channel: ps.broadcast_channel.clone(),
shared_array_buffer_store: Some(ps.shared_array_buffer_store.clone()),
compiled_wasm_module_store: Some(ps.compiled_wasm_module_store.clone()),
stdio,
};
let worker = MainWorker::bootstrap_from_options(
main_module.clone(),
permissions,
options,
);
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Ok(CliMainWorker {
main_module,
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is_main_cjs,
worker,
ps: ps.clone(),
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})
}
// TODO(bartlomieju): this callback could have default value
// and not be required
fn create_web_worker_preload_module_callback(
_ps: ProcState,
) -> Arc<WorkerEventCb> {
Arc::new(move |worker| {
let fut = async move { Ok(worker) };
LocalFutureObj::new(Box::new(fut))
})
}
fn create_web_worker_pre_execute_module_callback(
ps: ProcState,
) -> Arc<WorkerEventCb> {
Arc::new(move |mut worker| {
let ps = ps.clone();
let fut = async move {
// this will be up to date after pre-load
if ps.npm_resolver.has_packages() {
deno_node::initialize_runtime(
&mut worker.js_runtime,
ps.options.has_node_modules_dir(),
None,
)?;
}
Ok(worker)
};
LocalFutureObj::new(Box::new(fut))
})
}
fn create_web_worker_callback(
ps: ProcState,
stdio: deno_runtime::deno_io::Stdio,
) -> Arc<CreateWebWorkerCb> {
Arc::new(move |args| {
let maybe_inspector_server = ps.maybe_inspector_server.clone();
let module_loader = CliModuleLoader::new_for_worker(
ps.clone(),
args.parent_permissions.clone(),
args.permissions.clone(),
);
let create_web_worker_cb =
create_web_worker_callback(ps.clone(), stdio.clone());
let preload_module_cb =
create_web_worker_preload_module_callback(ps.clone());
let pre_execute_module_cb =
create_web_worker_pre_execute_module_callback(ps.clone());
let extensions = ops::cli_exts(ps.npm_resolver.clone());
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let maybe_storage_key = ps.options.resolve_storage_key(&args.main_module);
let cache_storage_dir = maybe_storage_key.map(|key| {
// TODO(@satyarohith): storage quota management
// Note: we currently use temp_dir() to avoid managing storage size.
std::env::temp_dir()
.join("deno_cache")
.join(checksum::gen(&[key.as_bytes()]))
});
let options = WebWorkerOptions {
bootstrap: BootstrapOptions {
args: ps.options.argv().clone(),
cpu_count: std::thread::available_parallelism()
.map(|p| p.get())
.unwrap_or(1),
debug_flag: ps
.options
.log_level()
.map(|l| l == log::Level::Debug)
.unwrap_or(false),
enable_testing_features: ps.options.enable_testing_features(),
locale: deno_core::v8::icu::get_language_tag(),
location: Some(args.main_module.clone()),
no_color: !colors::use_color(),
is_tty: colors::is_tty(),
runtime_version: version::deno().to_string(),
ts_version: version::TYPESCRIPT.to_string(),
unstable: ps.options.unstable(),
user_agent: version::get_user_agent().to_string(),
inspect: ps.options.is_inspecting(),
},
extensions,
startup_snapshot: Some(crate::js::deno_isolate_init()),
unsafely_ignore_certificate_errors: ps
.options
.unsafely_ignore_certificate_errors()
.clone(),
root_cert_store: Some(ps.root_cert_store.clone()),
seed: ps.options.seed(),
create_web_worker_cb,
preload_module_cb,
pre_execute_module_cb,
format_js_error_fn: Some(Arc::new(format_js_error)),
source_map_getter: Some(Box::new(module_loader.clone())),
module_loader,
node_fs: Some(ps.node_fs.clone()),
npm_resolver: Some(ps.npm_resolver.clone()),
worker_type: args.worker_type,
maybe_inspector_server,
get_error_class_fn: Some(&errors::get_error_class_name),
blob_store: ps.blob_store.clone(),
broadcast_channel: ps.broadcast_channel.clone(),
shared_array_buffer_store: Some(ps.shared_array_buffer_store.clone()),
compiled_wasm_module_store: Some(ps.compiled_wasm_module_store.clone()),
stdio: stdio.clone(),
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cache_storage_dir,
};
WebWorker::bootstrap_from_options(
args.name,
args.permissions,
args.main_module,
args.worker_id,
options,
)
})
}
#[cfg(test)]
mod tests {
use std::rc::Rc;
use super::*;
use deno_core::resolve_path;
use deno_core::FsModuleLoader;
use deno_runtime::deno_broadcast_channel::InMemoryBroadcastChannel;
use deno_runtime::deno_web::BlobStore;
use deno_runtime::permissions::Permissions;
fn create_test_worker() -> MainWorker {
let main_module =
resolve_path("./hello.js", &std::env::current_dir().unwrap()).unwrap();
let permissions = PermissionsContainer::new(Permissions::default());
let options = WorkerOptions {
bootstrap: BootstrapOptions::default(),
extensions: vec![],
startup_snapshot: Some(crate::js::deno_isolate_init()),
unsafely_ignore_certificate_errors: None,
root_cert_store: None,
seed: None,
format_js_error_fn: None,
source_map_getter: None,
web_worker_preload_module_cb: Arc::new(|_| unreachable!()),
web_worker_pre_execute_module_cb: Arc::new(|_| unreachable!()),
create_web_worker_cb: Arc::new(|_| unreachable!()),
maybe_inspector_server: None,
should_break_on_first_statement: false,
should_wait_for_inspector_session: false,
module_loader: Rc::new(FsModuleLoader),
node_fs: Some(Arc::new(deno_node::RealFs)),
npm_resolver: None,
get_error_class_fn: None,
cache_storage_dir: None,
origin_storage_dir: None,
blob_store: BlobStore::default(),
broadcast_channel: InMemoryBroadcastChannel::default(),
shared_array_buffer_store: None,
compiled_wasm_module_store: None,
stdio: Default::default(),
};
MainWorker::bootstrap_from_options(main_module, permissions, options)
}
#[tokio::test]
async fn execute_mod_esm_imports_a() {
let p = test_util::testdata_path().join("runtime/esm_imports_a.js");
let module_specifier = ModuleSpecifier::from_file_path(&p).unwrap();
let mut worker = create_test_worker();
let result = worker.execute_main_module(&module_specifier).await;
if let Err(err) = result {
eprintln!("execute_mod err {err:?}");
}
if let Err(e) = worker.run_event_loop(false).await {
panic!("Future got unexpected error: {e:?}");
}
}
#[tokio::test]
async fn execute_mod_circular() {
let p = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
.parent()
.unwrap()
.join("tests/circular1.js");
let module_specifier = ModuleSpecifier::from_file_path(&p).unwrap();
let mut worker = create_test_worker();
let result = worker.execute_main_module(&module_specifier).await;
if let Err(err) = result {
eprintln!("execute_mod err {err:?}");
}
if let Err(e) = worker.run_event_loop(false).await {
panic!("Future got unexpected error: {e:?}");
}
}
#[tokio::test]
async fn execute_mod_resolve_error() {
// "foo" is not a valid module specifier so this should return an error.
let mut worker = create_test_worker();
let module_specifier =
resolve_path("./does-not-exist", &std::env::current_dir().unwrap())
.unwrap();
let result = worker.execute_main_module(&module_specifier).await;
assert!(result.is_err());
}
#[tokio::test]
async fn execute_mod_002_hello() {
// This assumes cwd is project root (an assumption made throughout the
// tests).
let mut worker = create_test_worker();
let p = test_util::testdata_path().join("run/001_hello.js");
let module_specifier = ModuleSpecifier::from_file_path(&p).unwrap();
let result = worker.execute_main_module(&module_specifier).await;
assert!(result.is_ok());
}
}