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Add web worker JS API (#1993)

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* Refactored the way worker polling is scheduled and errors are handled.
* Share the worker future as a Shared
This commit is contained in:
andy finch 2019-04-01 15:09:59 -04:00 committed by Ryan Dahl
parent 659acadf77
commit b0a23beb8f
28 changed files with 1013 additions and 257 deletions
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234
cli/compiler.rs
View file

@ -1,26 +1,53 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
use core::ops::Deref;
use crate::flags::DenoFlags;
use crate::isolate_state::*;
use crate::js_errors::JSErrorColor;
use crate::msg;
use crate::ops;
use crate::resources;
use crate::resources::Resource;
use crate::resources::ResourceId;
use crate::startup_data;
use crate::workers;
use crate::workers::WorkerBehavior;
use crate::workers::WorkerInit;
use deno::deno_buf;
use deno::Behavior;
use deno::Buf;
use deno::JSError;
use deno::Op;
use deno::StartupData;
use futures::future::*;
use futures::sync::oneshot;
use futures::Future;
use serde_json;
use std::str;
use std::sync::Arc;
use std::sync::Mutex;
use tokio::runtime::Runtime;
/// Used for normalization of types on internal future completions
type CompilerInnerResult = Result<ModuleMetaData, Option<JSError>>;
type WorkerErrReceiver = oneshot::Receiver<CompilerInnerResult>;
/// Shared resources for used to complete compiler operations.
/// rid is the resource id for compiler worker resource used for sending it
/// compile requests
/// worker_err_receiver is a shared future that will compelete when the
/// compiler worker future completes, and send back an error if present
/// or a None if not
#[derive(Clone)]
struct CompilerShared {
pub rid: ResourceId,
pub worker_err_receiver: Shared<WorkerErrReceiver>,
}
lazy_static! {
static ref C_RID: Mutex<Option<ResourceId>> = Mutex::new(None);
// Shared worker resources so we can spawn
static ref C_SHARED: Mutex<Option<CompilerShared>> = Mutex::new(None);
// tokio runtime specifically for spawning logic that is dependent on
// completetion of the compiler worker future
static ref C_RUNTIME: Mutex<Runtime> = Mutex::new(Runtime::new().unwrap());
}
pub struct CompilerBehavior {
@ -28,8 +55,10 @@ pub struct CompilerBehavior {
}
impl CompilerBehavior {
pub fn new(state: Arc<IsolateState>) -> Self {
Self { state }
pub fn new(flags: DenoFlags, argv_rest: Vec<String>) -> Self {
Self {
state: Arc::new(IsolateState::new(flags, argv_rest, None, true)),
}
}
}
@ -65,13 +94,14 @@ impl WorkerBehavior for CompilerBehavior {
self.state.flags.clone(),
self.state.argv.clone(),
Some(worker_channels),
true,
));
}
}
// This corresponds to JS ModuleMetaData.
// TODO Rename one or the other so they correspond.
#[derive(Debug)]
#[derive(Debug, Clone)]
pub struct ModuleMetaData {
pub module_name: String,
pub filename: String,
@ -102,26 +132,60 @@ impl ModuleMetaData {
}
}
fn lazy_start(parent_state: Arc<IsolateState>) -> Resource {
let mut cell = C_RID.lock().unwrap();
let rid = cell.get_or_insert_with(|| {
let resource = workers::spawn(
CompilerBehavior::new(Arc::new(IsolateState::new(
fn lazy_start(parent_state: Arc<IsolateState>) -> CompilerShared {
let mut cell = C_SHARED.lock().unwrap();
cell
.get_or_insert_with(|| {
let worker_result = workers::spawn(
CompilerBehavior::new(
parent_state.flags.clone(),
parent_state.argv.clone(),
None,
))),
"compilerMain()".to_string(),
),
"TS",
WorkerInit::Script("compilerMain()".to_string()),
);
resource.rid
});
Resource { rid: *rid }
match worker_result {
Ok(worker) => {
let rid = worker.resource.rid.clone();
// create oneshot channels and use the sender to pass back
// results from worker future
let (err_sender, err_receiver) =
oneshot::channel::<CompilerInnerResult>();
let mut runtime = C_RUNTIME.lock().unwrap();
runtime.spawn(lazy(move || {
let resource = worker.resource.clone();
worker.then(move |result| -> Result<(), ()> {
resource.close();
match result {
Err(err) => err_sender.send(Err(Some(err))).unwrap(),
_ => err_sender.send(Err(None)).unwrap(),
};
Ok(())
})
}));
CompilerShared {
rid,
worker_err_receiver: err_receiver.shared(),
}
}
Err(err) => {
println!("{}", err.to_string());
std::process::exit(1);
}
}
}).clone()
}
fn req(specifier: &str, referrer: &str) -> Buf {
fn show_compiler_error(err: JSError) -> ModuleMetaData {
eprintln!("{}", JSErrorColor(&err).to_string());
std::process::exit(1);
}
fn req(specifier: &str, referrer: &str, is_worker_main: bool) -> Buf {
json!({
"specifier": specifier,
"referrer": referrer,
"isWorker": is_worker_main
}).to_string()
.into_boxed_str()
.into_boxed_bytes()
@ -133,25 +197,62 @@ pub fn compile_sync(
referrer: &str,
module_meta_data: &ModuleMetaData,
) -> ModuleMetaData {
let req_msg = req(specifier, referrer);
let is_worker = parent_state.is_worker.clone();
let shared = lazy_start(parent_state);
let compiler = lazy_start(parent_state);
let (local_sender, local_receiver) =
oneshot::channel::<Result<ModuleMetaData, Option<JSError>>>();
let send_future = resources::worker_post_message(compiler.rid, req_msg);
send_future.wait().unwrap();
let recv_future = resources::worker_recv_message(compiler.rid);
let result = recv_future.wait().unwrap();
assert!(result.is_some());
let res_msg = result.unwrap();
// Just some extra scoping to keep things clean
{
let compiler_rid = shared.rid.clone();
let module_meta_data_ = module_meta_data.clone();
let req_msg = req(specifier, referrer, is_worker);
let sender_arc = Arc::new(Some(local_sender));
let specifier_ = specifier.clone().to_string();
let referrer_ = referrer.clone().to_string();
let mut runtime = C_RUNTIME.lock().unwrap();
runtime.spawn(lazy(move || {
debug!(
"Running rust part of compile_sync specifier: {} referrer: {}",
specifier_, referrer_
);
let mut send_sender_arc = sender_arc.clone();
resources::post_message_to_worker(compiler_rid, req_msg)
.map_err(move |_| {
let sender = Arc::get_mut(&mut send_sender_arc).unwrap().take();
sender.unwrap().send(Err(None)).unwrap()
}).and_then(move |_| {
debug!(
"Sent message to worker specifier: {} referrer: {}",
specifier_, referrer_
);
let mut get_sender_arc = sender_arc.clone();
let mut result_sender_arc = sender_arc.clone();
resources::get_message_from_worker(compiler_rid)
.map_err(move |_| {
let sender = Arc::get_mut(&mut get_sender_arc).unwrap().take();
sender.unwrap().send(Err(None)).unwrap()
}).and_then(move |res_msg_option| -> Result<(), ()> {
debug!(
"Recieved message from worker specifier: {} referrer: {}",
specifier_, referrer_
);
let res_msg = res_msg_option.unwrap();
let res_json = std::str::from_utf8(&res_msg).unwrap();
match serde_json::from_str::<serde_json::Value>(res_json) {
let sender = Arc::get_mut(&mut result_sender_arc).unwrap().take();
let sender = sender.unwrap();
Ok(
sender
.send(Ok(match serde_json::from_str::<serde_json::Value>(
res_json,
) {
Ok(serde_json::Value::Object(map)) => ModuleMetaData {
module_name: module_meta_data.module_name.clone(),
filename: module_meta_data.filename.clone(),
media_type: module_meta_data.media_type,
source_code: module_meta_data.source_code.clone(),
module_name: module_meta_data_.module_name.clone(),
filename: module_meta_data_.filename.clone(),
media_type: module_meta_data_.media_type,
source_code: module_meta_data_.source_code.clone(),
maybe_output_code: match map["outputCode"].as_str() {
Some(str) => Some(str.as_bytes().to_owned()),
_ => None,
@ -164,15 +265,75 @@ pub fn compile_sync(
maybe_source_map_filename: None,
},
_ => panic!("error decoding compiler response"),
})).unwrap(),
)
})
})
}));
}
let worker_receiver = shared.worker_err_receiver.clone();
let union =
futures::future::select_all(vec![worker_receiver, local_receiver.shared()]);
match union.wait() {
Ok((result, i, rest)) => {
// We got a sucessful finish before any recivers where canceled
let mut rest_mut = rest;
match ((*result.deref()).clone(), i) {
// Either receiver was completed with success.
(Ok(v), _) => v,
// Either receiver was completed with a valid error
// this should be fatal for now since it is not intended
// to be possible to recover from a uncaught error in a isolate
(Err(Some(err)), _) => show_compiler_error(err),
// local_receiver finished first with a none error. This is intended
// to catch when the local logic can't complete because it is unable
// to send and/or receive messages from the compiler worker.
// Due to the way that scheduling works it is very likely that the
// compiler worker future has already or will in the near future
// complete with a valid JSError or a None.
(Err(None), 1) => {
debug!("Compiler local exited with None error!");
// While technically possible to get stuck here indefinately
// in theory it is highly unlikely.
debug!(
"Waiting on compiler worker result specifier: {} referrer: {}!",
specifier, referrer
);
let worker_result =
(*rest_mut.remove(0).wait().unwrap().deref()).clone();
debug!(
"Finished waiting on worker result specifier: {} referrer: {}!",
specifier, referrer
);
match worker_result {
Err(Some(err)) => show_compiler_error(err),
Err(None) => panic!("Compiler exit for an unknown reason!"),
Ok(v) => v,
}
}
// While possible beccause the compiler worker can exit without error
// this shouldn't occurr normally and I don't intend to attempt to
// handle it right now
(_, i) => panic!("Odd compiler result for future {}!", i),
}
}
// This should always a result of a reciver being cancled
// in theory but why not give a print out just in case
Err((err, i, _)) => panic!("compile_sync {} failed: {}", i, err),
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::tokio_util;
#[test]
fn test_compile_sync() {
tokio_util::init(|| {
let cwd = std::env::current_dir().unwrap();
let cwd_string = cwd.to_str().unwrap().to_owned();
@ -183,20 +344,25 @@ mod tests {
module_name: "xxx".to_owned(),
filename: "/tests/002_hello.ts".to_owned(),
media_type: msg::MediaType::TypeScript,
source_code: "console.log(\"Hello World\");".as_bytes().to_owned(),
source_code: include_bytes!("../tests/002_hello.ts").to_vec(),
maybe_output_code_filename: None,
maybe_output_code: None,
maybe_source_map_filename: None,
maybe_source_map: None,
};
out =
compile_sync(Arc::new(IsolateState::mock()), specifier, &referrer, &out);
out = compile_sync(
Arc::new(IsolateState::mock()),
specifier,
&referrer,
&out,
);
assert!(
out
.maybe_output_code
.unwrap()
.starts_with("console.log(\"Hello World\");".as_bytes())
);
});
}
}

10
cli/errors.rs
View file

@ -180,7 +180,15 @@ pub fn permission_denied() -> DenoError {
}
pub fn op_not_implemented() -> DenoError {
new(ErrorKind::BadResource, String::from("op not implemented"))
new(ErrorKind::OpNotAvaiable, String::from("op not implemented"))
}
pub fn worker_init_failed() -> DenoError {
// TODO(afinch7) pass worker error data through here
new(
ErrorKind::WorkerInitFailed,
String::from("worker init failed"),
)
}
#[derive(Debug)]

4
cli/isolate.rs
View file

@ -226,7 +226,7 @@ mod tests {
let argv = vec![String::from("./deno"), filename.clone()];
let (flags, rest_argv, _) = flags::set_flags(argv).unwrap();
let state = Arc::new(IsolateState::new(flags, rest_argv, None));
let state = Arc::new(IsolateState::new(flags, rest_argv, None, false));
let state_ = state.clone();
tokio_util::run(lazy(move || {
let cli = CliBehavior::new(None, state.clone());
@ -249,7 +249,7 @@ mod tests {
let argv = vec![String::from("./deno"), filename.clone()];
let (flags, rest_argv, _) = flags::set_flags(argv).unwrap();
let state = Arc::new(IsolateState::new(flags, rest_argv, None));
let state = Arc::new(IsolateState::new(flags, rest_argv, None, false));
let state_ = state.clone();
tokio_util::run(lazy(move || {
let cli = CliBehavior::new(None, state.clone());

15
cli/isolate_state.rs
View file

@ -5,9 +5,14 @@ use crate::flags;
use crate::global_timer::GlobalTimer;
use crate::modules::Modules;
use crate::permissions::DenoPermissions;
use crate::resources::ResourceId;
use crate::workers::UserWorkerBehavior;
use crate::workers::Worker;
use deno::Buf;
use futures::future::Shared;
use futures::sync::mpsc as async_mpsc;
use std;
use std::collections::HashMap;
use std::env;
use std::sync::atomic::{AtomicUsize, Ordering};
use std::sync::Arc;
@ -16,6 +21,8 @@ use std::sync::Mutex;
pub type WorkerSender = async_mpsc::Sender<Buf>;
pub type WorkerReceiver = async_mpsc::Receiver<Buf>;
pub type WorkerChannels = (WorkerSender, WorkerReceiver);
pub type UserWorkerTable =
HashMap<ResourceId, Shared<Worker<UserWorkerBehavior>>>;
// AtomicU64 is currently unstable
#[derive(Default)]
@ -42,6 +49,8 @@ pub struct IsolateState {
pub modules: Mutex<Modules>,
pub worker_channels: Option<Mutex<WorkerChannels>>,
pub global_timer: Mutex<GlobalTimer>,
pub workers: Mutex<UserWorkerTable>,
pub is_worker: bool,
}
impl IsolateState {
@ -49,6 +58,7 @@ impl IsolateState {
flags: flags::DenoFlags,
argv_rest: Vec<String>,
worker_channels: Option<WorkerChannels>,
is_worker: bool,
) -> Self {
let custom_root = env::var("DENO_DIR").map(|s| s.into()).ok();
@ -61,9 +71,12 @@ impl IsolateState {
modules: Mutex::new(Modules::new()),
worker_channels: worker_channels.map(Mutex::new),
global_timer: Mutex::new(GlobalTimer::new()),
workers: Mutex::new(UserWorkerTable::new()),
is_worker,
}
}
/// Read main module from argv
pub fn main_module(&self) -> Option<String> {
if self.argv.len() <= 1 {
None
@ -110,7 +123,7 @@ impl IsolateState {
let argv = vec![String::from("./deno"), String::from("hello.js")];
// For debugging: argv.push_back(String::from("-D"));
let (flags, rest_argv, _) = flags::set_flags(argv).unwrap();
IsolateState::new(flags, rest_argv, None)
IsolateState::new(flags, rest_argv, None, false)
}
pub fn metrics_op_dispatched(

2
cli/main.rs
View file

@ -108,7 +108,7 @@ fn main() {
let should_prefetch = flags.prefetch || flags.info;
let should_display_info = flags.info;
let state = Arc::new(IsolateState::new(flags, rest_argv, None));
let state = Arc::new(IsolateState::new(flags, rest_argv, None, false));
let state_ = state.clone();
let startup_data = startup_data::deno_isolate_init();
let cli = CliBehavior::new(Some(startup_data), state_);

38
cli/msg.fbs
View file

@ -63,6 +63,12 @@ union Any {
StatRes,
Symlink,
Truncate,
CreateWorker,
CreateWorkerRes,
HostGetWorkerClosed,
HostGetMessage,
HostGetMessageRes,
HostPostMessage,
WorkerGetMessage,
WorkerGetMessageRes,
WorkerPostMessage,
@ -121,6 +127,8 @@ enum ErrorKind: byte {
// custom errors
InvalidUri,
InvalidSeekMode,
OpNotAvaiable,
WorkerInitFailed
}
table Cwd {}
@ -171,6 +179,35 @@ table FormatErrorRes {
error: string;
}
// Create worker as host
table CreateWorker {
specifier: string;
}
table CreateWorkerRes {
rid: uint32;
}
table HostGetWorkerClosed {
rid: uint32;
}
// Get message from guest worker as host
table HostGetMessage {
rid: uint32;
}
table HostGetMessageRes {
data: [ubyte];
}
// Post message to guest worker as host
table HostPostMessage {
rid: uint32;
// data passed thru the zero-copy data parameter.
}
// Get message from host as guest worker
table WorkerGetMessage {
unused: int8;
}
@ -179,6 +216,7 @@ table WorkerGetMessageRes {
data: [ubyte];
}
// Post message to host as guest worker
table WorkerPostMessage {
// data passed thru the zero-copy data parameter.
}

160
cli/ops.rs
View file

@ -18,6 +18,7 @@ use crate::resources::Resource;
use crate::tokio_util;
use crate::tokio_write;
use crate::version;
use crate::workers;
use deno::deno_buf;
use deno::Buf;
use deno::JSError;
@ -141,13 +142,24 @@ pub fn dispatch_all(
(base.sync(), boxed_op)
}
/// Superset of op_selector_worker for compiler isolates
pub fn op_selector_compiler(inner_type: msg::Any) -> Option<OpCreator> {
match inner_type {
msg::Any::FetchModuleMetaData => Some(op_fetch_module_meta_data),
_ => op_selector_worker(inner_type),
}
}
/// Superset of op_selector_std for worker isolates
pub fn op_selector_worker(inner_type: msg::Any) -> Option<OpCreator> {
match inner_type {
msg::Any::WorkerGetMessage => Some(op_worker_get_message),
msg::Any::WorkerPostMessage => Some(op_worker_post_message),
_ => op_selector_std(inner_type),
}
}
/// Standard ops set for most isolates
pub fn op_selector_std(inner_type: msg::Any) -> Option<OpCreator> {
match inner_type {
msg::Any::Accept => Some(op_accept),
@ -189,8 +201,10 @@ pub fn op_selector_std(inner_type: msg::Any) -> Option<OpCreator> {
msg::Any::Stat => Some(op_stat),
msg::Any::Symlink => Some(op_symlink),
msg::Any::Truncate => Some(op_truncate),
msg::Any::WorkerGetMessage => Some(op_worker_get_message),
msg::Any::WorkerPostMessage => Some(op_worker_post_message),
msg::Any::CreateWorker => Some(op_create_worker),
msg::Any::HostGetWorkerClosed => Some(op_host_get_worker_closed),
msg::Any::HostGetMessage => Some(op_host_get_message),
msg::Any::HostPostMessage => Some(op_host_post_message),
msg::Any::Write => Some(op_write),
_ => None,
}
@ -1741,6 +1755,7 @@ impl Future for GetMessageFuture {
}
}
/// Get message from host as guest worker
fn op_worker_get_message(
sc: &IsolateStateContainer,
base: &msg::Base<'_>,
@ -1775,6 +1790,7 @@ fn op_worker_get_message(
Box::new(op)
}
/// Post message to host as guest worker
fn op_worker_post_message(
sc: &IsolateStateContainer,
base: &msg::Base<'_>,
@ -1807,3 +1823,143 @@ fn op_worker_post_message(
});
Box::new(op)
}
/// Create worker as the host
fn op_create_worker(
sc: &IsolateStateContainer,
base: &msg::Base<'_>,
data: deno_buf,
) -> Box<OpWithError> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
let inner = base.inner_as_create_worker().unwrap();
let specifier = inner.specifier().unwrap();
Box::new(futures::future::result(move || -> OpResult {
let parent_state = sc.state().clone();
let behavior = workers::UserWorkerBehavior::new(
parent_state.flags.clone(),
parent_state.argv.clone(),
);
match workers::spawn(
behavior,
&format!("USER-WORKER-{}", specifier),
workers::WorkerInit::Module(specifier.to_string()),
) {
Ok(worker) => {
let mut workers_tl = parent_state.workers.lock().unwrap();
let rid = worker.resource.rid.clone();
workers_tl.insert(rid, worker.shared());
let builder = &mut FlatBufferBuilder::new();
let msg_inner = msg::CreateWorkerRes::create(
builder,
&msg::CreateWorkerResArgs { rid },
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(msg_inner.as_union_value()),
inner_type: msg::Any::CreateWorkerRes,
..Default::default()
},
))
}
Err(errors::RustOrJsError::Js(_)) => Err(errors::worker_init_failed()),
Err(errors::RustOrJsError::Rust(err)) => Err(err),
}
}()))
}
/// Return when the worker closes
fn op_host_get_worker_closed(
sc: &IsolateStateContainer,
base: &msg::Base<'_>,
data: deno_buf,
) -> Box<OpWithError> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
let inner = base.inner_as_host_get_worker_closed().unwrap();
let rid = inner.rid();
let state = sc.state().clone();
let shared_worker_future = {
let workers_tl = state.workers.lock().unwrap();
let worker = workers_tl.get(&rid).unwrap();
worker.clone()
};
Box::new(shared_worker_future.then(move |_result| {
let builder = &mut FlatBufferBuilder::new();
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
..Default::default()
},
))
}))
}
/// Get message from guest worker as host
fn op_host_get_message(
_sc: &IsolateStateContainer,
base: &msg::Base<'_>,
data: deno_buf,
) -> Box<OpWithError> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
let inner = base.inner_as_host_get_message().unwrap();
let rid = inner.rid();
let op = resources::get_message_from_worker(rid);
let op = op.map_err(move |_| -> DenoError { unimplemented!() });
let op = op.and_then(move |maybe_buf| -> DenoResult<Buf> {
let builder = &mut FlatBufferBuilder::new();
let data = maybe_buf.as_ref().map(|buf| builder.create_vector(buf));
let msg_inner = msg::HostGetMessageRes::create(
builder,
&msg::HostGetMessageResArgs { data },
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(msg_inner.as_union_value()),
inner_type: msg::Any::HostGetMessageRes,
..Default::default()
},
))
});
Box::new(op)
}
/// Post message to guest worker as host
fn op_host_post_message(
_sc: &IsolateStateContainer,
base: &msg::Base<'_>,
data: deno_buf,
) -> Box<OpWithError> {
let cmd_id = base.cmd_id();
let inner = base.inner_as_host_post_message().unwrap();
let rid = inner.rid();
let d = Vec::from(data.as_ref()).into_boxed_slice();
let op = resources::post_message_to_worker(rid, d);
let op = op.map_err(|e| errors::new(ErrorKind::Other, e.to_string()));
let op = op.and_then(move |_| -> DenoResult<Buf> {
let builder = &mut FlatBufferBuilder::new();
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
..Default::default()
},
))
});
Box::new(op)
}

5
cli/resources.rs
View file

@ -305,7 +305,8 @@ pub fn add_worker(wc: WorkerChannels) -> Resource {
Resource { rid }
}
pub fn worker_post_message(
/// Post message to worker as a host or privilged overlord
pub fn post_message_to_worker(
rid: ResourceId,
buf: Buf,
) -> futures::sink::Send<futures::sync::mpsc::Sender<Buf>> {
@ -341,7 +342,7 @@ impl Future for WorkerReceiver {
}
}
pub fn worker_recv_message(rid: ResourceId) -> WorkerReceiver {
pub fn get_message_from_worker(rid: ResourceId) -> WorkerReceiver {
WorkerReceiver { rid }
}

2
cli/startup_data.rs
View file

@ -31,7 +31,7 @@ pub fn deno_isolate_init() -> StartupData {
pub fn compiler_isolate_init() -> StartupData {
if cfg!(feature = "no-snapshot-init") {
debug!("Deno isolate init without snapshots.");
debug!("Compiler isolate init without snapshots.");
#[cfg(not(feature = "check-only"))]
let source_bytes = include_bytes!(concat!(
env!("GN_OUT_DIR"),

239
cli/workers.rs
View file

@ -1,17 +1,72 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
use crate::errors::*;
use crate::flags::DenoFlags;
use crate::isolate::{DenoBehavior, Isolate};
use crate::isolate_state::IsolateState;
use crate::isolate_state::IsolateStateContainer;
use crate::isolate_state::WorkerChannels;
use crate::js_errors::JSErrorColor;
use crate::ops;
use crate::resources;
use crate::tokio_util;
use crate::startup_data;
use deno::deno_buf;
use deno::Behavior;
use deno::Buf;
use deno::JSError;
use futures::future::lazy;
use deno::Op;
use deno::StartupData;
use futures::sync::mpsc;
use futures::sync::oneshot;
use futures::Future;
use futures::Poll;
use std::thread;
use std::sync::Arc;
pub struct UserWorkerBehavior {
pub state: Arc<IsolateState>,
}
impl UserWorkerBehavior {
pub fn new(flags: DenoFlags, argv_rest: Vec<String>) -> Self {
Self {
state: Arc::new(IsolateState::new(flags, argv_rest, None, true)),
}
}
}
impl IsolateStateContainer for UserWorkerBehavior {
fn state(&self) -> Arc<IsolateState> {
self.state.clone()
}
}
impl IsolateStateContainer for &UserWorkerBehavior {
fn state(&self) -> Arc<IsolateState> {
self.state.clone()
}
}
impl Behavior for UserWorkerBehavior {
fn startup_data(&mut self) -> Option<StartupData> {
Some(startup_data::deno_isolate_init())
}
fn dispatch(
&mut self,
control: &[u8],
zero_copy: deno_buf,
) -> (bool, Box<Op>) {
ops::dispatch_all(self, control, zero_copy, ops::op_selector_worker)
}
}
impl WorkerBehavior for UserWorkerBehavior {
fn set_internal_channels(&mut self, worker_channels: WorkerChannels) {
self.state = Arc::new(IsolateState::new(
self.state.flags.clone(),
self.state.argv.clone(),
Some(worker_channels),
true,
));
}
}
/// Behavior trait specific to workers
pub trait WorkerBehavior: DenoBehavior {
@ -24,10 +79,11 @@ pub trait WorkerBehavior: DenoBehavior {
/// Rust interface for WebWorkers.
pub struct Worker<B: WorkerBehavior> {
isolate: Isolate<B>,
pub resource: resources::Resource,
}
impl<B: WorkerBehavior> Worker<B> {
pub fn new(mut behavior: B) -> (Self, WorkerChannels) {
pub fn new(mut behavior: B) -> Self {
let (worker_in_tx, worker_in_rx) = mpsc::channel::<Buf>(1);
let (worker_out_tx, worker_out_rx) = mpsc::channel::<Buf>(1);
@ -38,13 +94,23 @@ impl<B: WorkerBehavior> Worker<B> {
let isolate = Isolate::new(behavior);
let worker = Worker { isolate };
(worker, external_channels)
Worker {
isolate,
resource: resources::add_worker(external_channels),
}
}
pub fn execute(&mut self, js_source: &str) -> Result<(), JSError> {
self.isolate.execute(js_source)
}
pub fn execute_mod(
&mut self,
js_filename: &str,
is_prefetch: bool,
) -> Result<(), RustOrJsError> {
self.isolate.execute_mod(js_filename, is_prefetch)
}
}
impl<B: WorkerBehavior> Future for Worker<B> {
@ -56,47 +122,48 @@ impl<B: WorkerBehavior> Future for Worker<B> {
}
}
/// Method and data used to initalize a worker
pub enum WorkerInit {
Script(String),
Module(String),
}
pub fn spawn<B: WorkerBehavior + 'static>(
behavior: B,
js_source: String,
) -> resources::Resource {
// TODO This function should return a Future, so that the caller can retrieve
// the JSError if one is thrown. Currently it just prints to stderr and calls
// exit(1).
// let (js_error_tx, js_error_rx) = oneshot::channel::<JSError>();
let (p, c) = oneshot::channel::<resources::Resource>();
let builder = thread::Builder::new().name("worker".to_string());
let _tid = builder
.spawn(move || {
tokio_util::run(lazy(move || {
let (mut worker, external_channels) = Worker::new(behavior);
let resource = resources::add_worker(external_channels);
p.send(resource.clone()).unwrap();
worker_debug_name: &str,
init: WorkerInit,
) -> Result<Worker<B>, RustOrJsError> {
let state = behavior.state().clone();
let mut worker = Worker::new(behavior);
worker
.execute("denoMain()")
.expect("worker denoMain failed");
.execute(&format!("denoMain('{}')", worker_debug_name))
.expect("worker workerInit failed");
worker
.execute("workerMain()")
.expect("worker workerMain failed");
worker.execute(&js_source).expect("worker js_source failed");
worker.then(move |r| -> Result<(), ()> {
resource.close();
debug!("workers.rs after resource close");
if let Err(err) = r {
eprintln!("{}", JSErrorColor(&err).to_string());
std::process::exit(1);
let init_result = match init {
WorkerInit::Script(script) => match worker.execute(&script) {
Ok(v) => Ok(v),
Err(e) => Err(RustOrJsError::Js(e)),
},
WorkerInit::Module(specifier) => {
let should_prefetch = state.flags.prefetch || state.flags.info;
match state.dir.resolve_module_url(&specifier, ".") {
Err(err) => Err(RustOrJsError::Rust(DenoError::from(err))),
Ok(module_url) => {
worker.execute_mod(&module_url.to_string(), should_prefetch)
}
Ok(())
})
}));
}
}
};
debug!("workers.rs after spawn");
}).unwrap();
c.wait().unwrap()
match init_result {
Ok(_) => Ok(worker),
Err(err) => Err(err),
}
}
#[cfg(test)]
@ -104,56 +171,109 @@ mod tests {
use super::*;
use crate::compiler::CompilerBehavior;
use crate::isolate_state::IsolateState;
use std::sync::Arc;
use crate::js_errors::JSErrorColor;
use crate::tokio_util;
use futures::future::lazy;
use std::thread;
#[test]
fn test_spawn() {
let resource = spawn(
CompilerBehavior::new(Arc::new(IsolateState::mock())),
tokio_util::init(|| {
let worker_result = spawn(
CompilerBehavior::new(
IsolateState::mock().flags.clone(),
IsolateState::mock().argv.clone(),
),
"TEST",
WorkerInit::Script(
r#"
onmessage = function(e) {
let s = new TextDecoder().decode(e.data);;
console.log("msg from main script", s);
if (s == "exit") {
console.log("msg from main script", e.data);
if (e.data == "exit") {
close();
return;
} else {
console.assert(s === "hi");
console.assert(e.data === "hi");
}
postMessage(new Uint8Array([1, 2, 3]));
postMessage([1, 2, 3]);
console.log("after postMessage");
}
"#.into(),
),
);
let msg = String::from("hi").into_boxed_str().into_boxed_bytes();
assert!(worker_result.is_ok());
let worker = worker_result.unwrap();
let resource = worker.resource.clone();
let resource_ = resource.clone();
let r = resources::worker_post_message(resource.rid, msg).wait();
tokio::spawn(lazy(move || {
worker.then(move |r| -> Result<(), ()> {
resource_.close();
debug!("workers.rs after resource close");
if let Err(err) = r {
eprintln!("{}", JSErrorColor(&err).to_string());
assert!(false)
}
Ok(())
})
}));
let msg = json!("hi").to_string().into_boxed_str().into_boxed_bytes();
let r = resources::post_message_to_worker(resource.rid, msg).wait();
assert!(r.is_ok());
let maybe_msg =
resources::worker_recv_message(resource.rid).wait().unwrap();
let maybe_msg = resources::get_message_from_worker(resource.rid)
.wait()
.unwrap();
assert!(maybe_msg.is_some());
assert_eq!(*maybe_msg.unwrap(), [1, 2, 3]);
// Check if message received is [1, 2, 3] in json
assert_eq!(*maybe_msg.unwrap(), *b"[1,2,3]");
let msg = String::from("exit").into_boxed_str().into_boxed_bytes();
let r = resources::worker_post_message(resource.rid, msg).wait();
let msg = json!("exit")
.to_string()
.into_boxed_str()
.into_boxed_bytes();
let r = resources::post_message_to_worker(resource.rid, msg).wait();
assert!(r.is_ok());
})
}
#[test]
fn removed_from_resource_table_on_close() {
let resource = spawn(
CompilerBehavior::new(Arc::new(IsolateState::mock())),
"onmessage = () => close();".into(),
tokio_util::init(|| {
let worker_result = spawn(
CompilerBehavior::new(
IsolateState::mock().flags.clone(),
IsolateState::mock().argv.clone(),
),
"TEST",
WorkerInit::Script("onmessage = () => close();".into()),
);
assert!(worker_result.is_ok());
let worker = worker_result.unwrap();
let resource = worker.resource.clone();
let resource_ = resource.clone();
tokio::spawn(lazy(move || {
worker.then(move |r| -> Result<(), ()> {
resource_.close();
debug!("workers.rs after resource close");
if let Err(err) = r {
eprintln!("{}", JSErrorColor(&err).to_string());
assert!(false)
}
Ok(())
})
}));
assert_eq!(
resources::get_type(resource.rid),
Some("worker".to_string())
);
let msg = String::from("hi").into_boxed_str().into_boxed_bytes();
let r = resources::worker_post_message(resource.rid, msg).wait();
let msg = json!("hi").to_string().into_boxed_str().into_boxed_bytes();
let r = resources::post_message_to_worker(resource.rid, msg).wait();
assert!(r.is_ok());
println!("rid {:?}", resource.rid);
@ -162,5 +282,6 @@ mod tests {
// resource.close();
thread::sleep(std::time::Duration::from_millis(1000));
assert_eq!(resources::get_type(resource.rid), None);
})
}
}

4
core/js_errors.rs
View file

@ -13,7 +13,7 @@ use serde_json;
use std::fmt;
use std::str;
#[derive(Debug, PartialEq)]
#[derive(Debug, PartialEq, Clone)]
pub struct StackFrame {
pub line: i64, // zero indexed
pub column: i64, // zero indexed
@ -24,7 +24,7 @@ pub struct StackFrame {
pub is_wasm: bool,
}
#[derive(Debug, PartialEq)]
#[derive(Debug, PartialEq, Clone)]
pub struct JSError {
pub message: String,

16
js/assets.ts
View file

@ -44,12 +44,8 @@ import libEsnextDts from "/third_party/node_modules/typescript/lib/lib.esnext.d.
import libEsnextIntlDts from "/third_party/node_modules/typescript/lib/lib.esnext.intl.d.ts!string";
import libEsnextSymbolDts from "/third_party/node_modules/typescript/lib/lib.esnext.symbol.d.ts!string";
// @internal
export const assetSourceCode: { [key: string]: string } = {
// Generated library
"lib.deno_runtime.d.ts": libDts,
// Static libraries
// Default static libraries for all compile jobs
const defaultAssets: { [key: string]: string } = {
"lib.es2015.collection.d.ts": libEs2015CollectionDts,
"lib.es2015.core.d.ts": libEs2015CoreDts,
"lib.es2015.d.ts": libEs2015Dts,
@ -85,3 +81,11 @@ export const assetSourceCode: { [key: string]: string } = {
"lib.esnext.intl.d.ts": libEsnextIntlDts,
"lib.esnext.symbol.d.ts": libEsnextSymbolDts
};
// assests for normal compile jobs
// @internal
export const assetSourceCode: { [key: string]: string } = {
// Generated library
"lib.deno_runtime.d.ts": libDts,
...defaultAssets
};

26
js/compiler.ts
View file

@ -46,6 +46,7 @@ type SourceMap = string;
interface CompilerLookup {
specifier: ModuleSpecifier;
referrer: ContainingFile;
isWorker: boolean;
}
/** Abstraction of the APIs required from the `os` module so they can be
@ -179,6 +180,8 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
// testing
private _ts: Ts = ts;
private readonly _assetsSourceCode: { [key: string]: string };
/** The TypeScript language service often refers to the resolved fileName of
* a module, this is a shortcut to avoid unnecessary module resolution logic
* for modules that may have been initially resolved by a `moduleSpecifier`
@ -239,9 +242,12 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
// not null assertion
moduleId = moduleSpecifier.split("/").pop()!;
const assetName = moduleId.includes(".") ? moduleId : `${moduleId}.d.ts`;
assert(assetName in assetSourceCode, `No such asset "${assetName}"`);
assert(
assetName in this._assetsSourceCode,
`No such asset "${assetName}"`
);
mediaType = msg.MediaType.TypeScript;
sourceCode = assetSourceCode[assetName];
sourceCode = this._assetsSourceCode[assetName];
fileName = `${ASSETS}/${assetName}`;
} else {
// We query Rust with a CodeFetch message. It will load the sourceCode,
@ -299,7 +305,8 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
innerMap.set(moduleSpecifier, fileName);
}
constructor() {
constructor(assetsSourceCode: { [key: string]: string }) {
this._assetsSourceCode = assetsSourceCode;
this._service = this._ts.createLanguageService(this);
}
@ -498,7 +505,7 @@ class Compiler implements ts.LanguageServiceHost, ts.FormatDiagnosticsHost {
}
}
const compiler = new Compiler();
const compiler = new Compiler(assetSourceCode);
// set global objects for compiler web worker
window.clearTimeout = clearTimer;
@ -514,17 +521,12 @@ window.TextEncoder = TextEncoder;
// lazy instantiating the compiler web worker
window.compilerMain = function compilerMain() {
// workerMain should have already been called since a compiler is a worker.
const encoder = new TextEncoder();
const decoder = new TextDecoder();
window.onmessage = ({ data }: { data: Uint8Array }) => {
const json = decoder.decode(data);
const { specifier, referrer } = JSON.parse(json) as CompilerLookup;
window.onmessage = ({ data }: { data: CompilerLookup }) => {
const { specifier, referrer } = data;
const result = compiler.compile(specifier, referrer);
const responseJson = JSON.stringify(result);
const response = encoder.encode(responseJson);
postMessage(response);
postMessage(result);
};
};

9
js/globals.ts
View file

@ -102,7 +102,16 @@ export type TextDecoder = textEncoding.TextDecoder;
window.performance = new performanceUtil.Performance();
// This variable functioning correctly depends on `declareAsLet`
// in //tools/ts_library_builder/main.ts
window.onmessage = workers.onmessage;
window.workerMain = workers.workerMain;
window.workerClose = workers.workerClose;
window.postMessage = workers.postMessage;
window.Worker = workers.WorkerImpl;
export type Worker = workers.Worker;
// below are interfaces that are available in TypeScript but
// have different signatures

4
js/main.ts
View file

@ -18,8 +18,8 @@ import * as deno from "./deno";
// TODO(kitsonk) remove with `--types` below
import libDts from "gen/cli/lib/lib.deno_runtime.d.ts!string";
export default function denoMain(): void {
const startResMsg = os.start();
export default function denoMain(name?: string): void {
const startResMsg = os.start(name);
setVersions(startResMsg.denoVersion()!, startResMsg.v8Version()!);

153
js/workers.ts
View file

@ -1,33 +1,110 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import * as dispatch from "./dispatch";
/* eslint-disable @typescript-eslint/no-explicit-any */
import { sendAsync, sendSync } from "./dispatch";
import * as msg from "gen/cli/msg_generated";
import * as flatbuffers from "./flatbuffers";
import { assert, log } from "./util";
import { TextDecoder, TextEncoder } from "./text_encoding";
import { window } from "./window";
export async function postMessage(data: Uint8Array): Promise<void> {
const encoder = new TextEncoder();
const decoder = new TextDecoder();
export function encodeMessage(data: any): Uint8Array {
const dataJson = JSON.stringify(data);
return encoder.encode(dataJson);
}
export function decodeMessage(dataIntArray: Uint8Array): any {
const dataJson = decoder.decode(dataIntArray);
return JSON.parse(dataJson);
}
function createWorker(specifier: string): number {
const builder = flatbuffers.createBuilder();
msg.WorkerPostMessage.startWorkerPostMessage(builder);
const inner = msg.WorkerPostMessage.endWorkerPostMessage(builder);
const baseRes = await dispatch.sendAsync(
const specifier_ = builder.createString(specifier);
msg.CreateWorker.startCreateWorker(builder);
msg.CreateWorker.addSpecifier(builder, specifier_);
const inner = msg.CreateWorker.endCreateWorker(builder);
const baseRes = sendSync(builder, msg.Any.CreateWorker, inner);
assert(baseRes != null);
assert(
msg.Any.CreateWorkerRes === baseRes!.innerType(),
`base.innerType() unexpectedly is ${baseRes!.innerType()}`
);
const res = new msg.CreateWorkerRes();
assert(baseRes!.inner(res) != null);
return res.rid();
}
async function hostGetWorkerClosed(rid: number): Promise<void> {
const builder = flatbuffers.createBuilder();
msg.HostGetWorkerClosed.startHostGetWorkerClosed(builder);
msg.HostGetWorkerClosed.addRid(builder, rid);
const inner = msg.HostGetWorkerClosed.endHostGetWorkerClosed(builder);
await sendAsync(builder, msg.Any.HostGetWorkerClosed, inner);
}
function hostPostMessage(rid: number, data: any): void {
const dataIntArray = encodeMessage(data);
const builder = flatbuffers.createBuilder();
msg.HostPostMessage.startHostPostMessage(builder);
msg.HostPostMessage.addRid(builder, rid);
const inner = msg.HostPostMessage.endHostPostMessage(builder);
const baseRes = sendSync(
builder,
msg.Any.WorkerPostMessage,
msg.Any.HostPostMessage,
inner,
data
dataIntArray
);
assert(baseRes != null);
}
export async function getMessage(): Promise<null | Uint8Array> {
async function hostGetMessage(rid: number): Promise<any> {
const builder = flatbuffers.createBuilder();
msg.HostGetMessage.startHostGetMessage(builder);
msg.HostGetMessage.addRid(builder, rid);
const inner = msg.HostGetMessage.endHostGetMessage(builder);
const baseRes = await sendAsync(builder, msg.Any.HostGetMessage, inner);
assert(baseRes != null);
assert(
msg.Any.HostGetMessageRes === baseRes!.innerType(),
`base.innerType() unexpectedly is ${baseRes!.innerType()}`
);
const res = new msg.HostGetMessageRes();
assert(baseRes!.inner(res) != null);
const dataArray = res.dataArray();
if (dataArray != null) {
return decodeMessage(dataArray);
} else {
return null;
}
}
// Stuff for workers
export let onmessage: (e: { data: any }) => void = (): void => {};
export function postMessage(data: any): void {
const dataIntArray = encodeMessage(data);
const builder = flatbuffers.createBuilder();
msg.WorkerPostMessage.startWorkerPostMessage(builder);
const inner = msg.WorkerPostMessage.endWorkerPostMessage(builder);
const baseRes = sendSync(
builder,
msg.Any.WorkerPostMessage,
inner,
dataIntArray
);
assert(baseRes != null);
}
export async function getMessage(): Promise<any> {
log("getMessage");
const builder = flatbuffers.createBuilder();
msg.WorkerGetMessage.startWorkerGetMessage(builder);
const inner = msg.WorkerGetMessage.endWorkerGetMessage(builder);
const baseRes = await dispatch.sendAsync(
builder,
msg.Any.WorkerGetMessage,
inner
);
const baseRes = await sendAsync(builder, msg.Any.WorkerGetMessage, inner);
assert(baseRes != null);
assert(
msg.Any.WorkerGetMessageRes === baseRes!.innerType(),
@ -37,14 +114,14 @@ export async function getMessage(): Promise<null | Uint8Array> {
assert(baseRes!.inner(res) != null);
const dataArray = res.dataArray();
if (dataArray == null) {
return null;
if (dataArray != null) {
return decodeMessage(dataArray);
} else {
return new Uint8Array(dataArray!);
return null;
}
}
let isClosing = false;
export let isClosing = false;
export function workerClose(): void {
isClosing = true;
@ -67,3 +144,45 @@ export async function workerMain(): Promise<void> {
}
}
}
export interface Worker {
onerror?: () => void;
onmessage?: (e: { data: any }) => void;
onmessageerror?: () => void;
postMessage(data: any): void;
}
export class WorkerImpl implements Worker {
private readonly rid: number;
private isClosing: boolean = false;
public onerror?: () => void;
public onmessage?: (data: any) => void;
public onmessageerror?: () => void;
constructor(specifier: string) {
this.rid = createWorker(specifier);
this.run();
hostGetWorkerClosed(this.rid).then(() => {
this.isClosing = true;
});
}
postMessage(data: any): void {
hostPostMessage(this.rid, data);
}
private async run(): Promise<void> {
while (!this.isClosing) {
const data = await hostGetMessage(this.rid);
if (data == null) {
log("worker got null message. quitting.");
break;
}
// TODO(afinch7) stop this from eating messages before onmessage has been assigned
if (this.onmessage) {
const event = { data };
this.onmessage(event);
}
}
}
}

2
tests/026_workers.test Normal file
View file

@ -0,0 +1,2 @@
args: tests/026_workers.ts --reload
output: tests/026_workers.ts.out

14
tests/026_workers.ts Normal file
View file

@ -0,0 +1,14 @@
const jsWorker = new Worker("tests/subdir/test_worker.js");
const tsWorker = new Worker("tests/subdir/test_worker.ts");
tsWorker.onmessage = e => {
console.log("Received ts: " + e.data);
};
jsWorker.onmessage = e => {
console.log("Received js: " + e.data);
tsWorker.postMessage("Hello World");
};
jsWorker.postMessage("Hello World");

4
tests/026_workers.ts.out Normal file
View file

@ -0,0 +1,4 @@
Hello World
Received js: Hello World
Hello World
Received ts: Hello World

0
tests/error_004_missing_module.disabled → tests/error_004_missing_module
View file

0
tests/error_005_missing_dynamic_import.disabled → tests/error_005_missing_dynamic_import
View file

0
tests/error_006_import_ext_failure.disabled → tests/error_006_import_ext_failure
View file

7
tests/subdir/test_worker.js Normal file
View file

@ -0,0 +1,7 @@
onmessage = function(e) {
console.log(e.data);
postMessage(e.data);
workerClose();
};

7
tests/subdir/test_worker.ts Normal file
View file

@ -0,0 +1,7 @@
onmessage = function(e) {
console.log(e.data);
postMessage(e.data);
workerClose();
};

5
tools/ts_library_builder/ast_util.ts
View file

@ -94,11 +94,14 @@ export function addVariableDeclaration(
node: StatementedNode,
name: string,
type: string,
isConst: boolean,
hasDeclareKeyword?: boolean,
jsdocs?: JSDoc[]
): VariableStatement {
return node.addVariableStatement({
declarationKind: VariableDeclarationKind.Const,
declarationKind: isConst
? VariableDeclarationKind.Const
: VariableDeclarationKind.Let,
declarations: [{ name, type }],
docs: jsdocs && jsdocs.map(jsdoc => jsdoc.getText()),
hasDeclareKeyword

122
tools/ts_library_builder/build_library.ts
View file

@ -56,6 +56,16 @@ export interface BuildLibraryOptions {
* the basePath. */
inputs?: string[];
/**
* Path to globals file to be used I.E. `js/globals.ts`
*/
additionalGlobals?: string[];
/**
* List of global variables to define as let instead of the default const.
*/
declareAsLet?: string[];
/**
* The path to the output library
*/
@ -170,30 +180,21 @@ export function flatten({
}
}
interface MergeGlobalOptions {
basePath: string;
debug?: boolean;
declarationProject: Project;
filePath: string;
interface PrepareFileForMergeOptions {
globalVarName: string;
ignore?: string[];
inputProject: Project;
interfaceName: string;
targetSourceFile: SourceFile;
}
/** Take a module and merge it into the global scope */
export function mergeGlobal({
basePath,
debug,
declarationProject,
filePath,
interface PrepareFileForMergeReturn {
interfaceDeclaration: InterfaceDeclaration;
}
export function prepareFileForMerge({
globalVarName,
ignore,
inputProject,
interfaceName,
targetSourceFile
}: MergeGlobalOptions): void {
}: PrepareFileForMergeOptions): PrepareFileForMergeReturn {
// Add the global object interface
const interfaceDeclaration = targetSourceFile.addInterface({
name: interfaceName,
@ -201,15 +202,56 @@ export function mergeGlobal({
});
// Declare the global variable
addVariableDeclaration(targetSourceFile, globalVarName, interfaceName, true);
addVariableDeclaration(
targetSourceFile,
globalVarName,
interfaceName,
true,
true
);
// `globalThis` accesses the global scope and is defined here:
// https://github.com/tc39/proposal-global
addVariableDeclaration(targetSourceFile, "globalThis", interfaceName, true);
addVariableDeclaration(
targetSourceFile,
"globalThis",
interfaceName,
true,
true
);
// Add self reference to the global variable
addInterfaceProperty(interfaceDeclaration, globalVarName, interfaceName);
return {
interfaceDeclaration
};
}
interface MergeGlobalOptions extends PrepareFileForMergeOptions {
basePath: string;
debug?: boolean;
declarationProject: Project;
filePath: string;
ignore?: string[];
inputProject: Project;
prepareReturn: PrepareFileForMergeReturn;
declareAsLet?: string[];
}
/** Take a module and merge it into the global scope */
export function mergeGlobals({
basePath,
debug,
declarationProject,
filePath,
globalVarName,
ignore,
inputProject,
targetSourceFile,
declareAsLet,
prepareReturn: { interfaceDeclaration }
}: MergeGlobalOptions): void {
// Retrieve source file from the input project
const sourceFile = inputProject.getSourceFileOrThrow(filePath);
@ -267,7 +309,8 @@ export function mergeGlobal({
dependentSourceFiles.add(valueDeclaration.getSourceFile());
}
}
addVariableDeclaration(targetSourceFile, property, type, true);
const isConst = !(declareAsLet && declareAsLet.includes(property));
addVariableDeclaration(targetSourceFile, property, type, isConst, true);
addInterfaceProperty(interfaceDeclaration, property, type);
}
}
@ -297,6 +340,8 @@ export function mergeGlobal({
const importDeclarations = sourceFile.getImportDeclarations();
const namespaces = new Set<string>();
for (const declaration of importDeclarations) {
const namespaceImport = declaration.getNamespaceImport();
if (namespaceImport) {
const declarationSourceFile = declaration.getModuleSpecifierSourceFile();
if (
declarationSourceFile &&
@ -314,7 +359,7 @@ export function mergeGlobal({
targetSourceFile.addStatements(
namespaceSourceFile(dtsSourceFile, {
debug,
namespace: declaration.getNamespaceImportOrThrow().getText(),
namespace: namespaceImport.getText(),
namespaces,
rootPath: basePath,
sourceFileMap
@ -322,6 +367,7 @@ export function mergeGlobal({
);
}
}
}
if (debug) {
addSourceComment(targetSourceFile, sourceFile, basePath);
@ -337,6 +383,8 @@ export function main({
buildPath,
inline,
inputs,
additionalGlobals,
declareAsLet,
debug,
outFile,
silent
@ -476,20 +524,46 @@ export function main({
}${msgGeneratedDtsText}\n`
};
mergeGlobal({
const prepareForMergeOpts: PrepareFileForMergeOptions = {
globalVarName: "window",
interfaceName: "Window",
targetSourceFile: libDTs
};
const prepareReturn = prepareFileForMerge(prepareForMergeOpts);
mergeGlobals({
basePath,
debug,
declarationProject,
filePath: `${basePath}/js/globals.ts`,
globalVarName: "window",
inputProject,
ignore: ["Deno"],
interfaceName: "Window",
targetSourceFile: libDTs
declareAsLet,
...prepareForMergeOpts,
prepareReturn
});
log(`Merged "globals" into global scope.`);
if (additionalGlobals) {
for (const additionalGlobal of additionalGlobals) {
mergeGlobals({
basePath,
debug,
declarationProject,
filePath: `${basePath}/${additionalGlobal}`,
inputProject,
ignore: ["Deno"],
declareAsLet,
...prepareForMergeOpts,
prepareReturn
});
}
log(`Added additional "globals" into global scope.`);
}
flatten({
basePath,
customSources,

1
tools/ts_library_builder/main.ts
View file

@ -46,6 +46,7 @@ buildRuntimeLib({
"js/deno.ts",
"js/globals.ts"
],
declareAsLet: ["onmessage"],
outFile,
silent
});

17
tools/ts_library_builder/test.ts
View file

@ -5,7 +5,7 @@
import * as assert from "assert";
import { Project, ts } from "ts-morph";
import { flatten, mergeGlobal } from "./build_library";
import { flatten, mergeGlobals, prepareFileForMerge } from "./build_library";
import { inlineFiles, loadDtsFiles } from "./ast_util";
const { ModuleKind, ModuleResolutionKind, ScriptTarget } = ts;
@ -146,15 +146,22 @@ function buildLibraryMerge(): void {
outputSourceFile: targetSourceFile
} = setupFixtures();
mergeGlobal({
const prepareForMergeOpts = {
globalVarName: "foobarbaz",
interfaceName: "FooBar",
targetSourceFile
};
const prepareReturn = prepareFileForMerge(prepareForMergeOpts);
mergeGlobals({
basePath,
declarationProject,
debug,
globalVarName: "foobarbaz",
filePath: `${buildPath}/globals.ts`,
inputProject,
interfaceName: "FooBar",
targetSourceFile
...prepareForMergeOpts,
prepareReturn
});
assert(targetSourceFile.getNamespace("moduleC") != null);