mirror of
https://github.com/denoland/deno
synced 2024-08-27 12:00:17 +00:00
![Bartek Iwańczuk](/assets/img/avatar_default.png)
This commit adds "deno jupyter" subcommand which provides a Deno kernel for Jupyter notebooks. The implementation is mostly based on Deno's REPL and reuses large parts of it (though there's some clean up that needs to happen in follow up PRs). Not all functionality of Jupyter kernel is implemented and some message type are still not implemented (eg. "inspect_request") but the kernel is fully working and provides all the capatibilities that the Deno REPL has; including TypeScript transpilation and npm packages support. Closes https://github.com/denoland/deno/issues/13016 --------- Co-authored-by: Adam Powers <apowers@ato.ms> Co-authored-by: Kyle Kelley <rgbkrk@gmail.com>
318 lines
11 KiB
Rust
318 lines
11 KiB
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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mod args;
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mod auth_tokens;
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mod cache;
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mod deno_std;
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mod emit;
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mod errors;
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mod factory;
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mod file_fetcher;
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mod graph_util;
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mod http_util;
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mod js;
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mod lsp;
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mod module_loader;
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mod napi;
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mod node;
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mod npm;
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mod ops;
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mod resolver;
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mod standalone;
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mod tools;
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mod tsc;
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mod util;
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mod version;
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mod worker;
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use crate::args::flags_from_vec;
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use crate::args::DenoSubcommand;
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use crate::args::Flags;
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use crate::util::display;
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use crate::util::v8::get_v8_flags_from_env;
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use crate::util::v8::init_v8_flags;
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use deno_core::anyhow::Context;
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use deno_core::error::AnyError;
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use deno_core::error::JsError;
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use deno_core::futures::FutureExt;
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use deno_core::unsync::JoinHandle;
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use deno_runtime::colors;
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use deno_runtime::fmt_errors::format_js_error;
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use deno_runtime::tokio_util::create_and_run_current_thread_with_maybe_metrics;
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use factory::CliFactory;
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use std::env;
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use std::env::current_exe;
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use std::future::Future;
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use std::path::PathBuf;
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/// Ensures that all subcommands return an i32 exit code and an [`AnyError`] error type.
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trait SubcommandOutput {
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fn output(self) -> Result<i32, AnyError>;
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}
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impl SubcommandOutput for Result<i32, AnyError> {
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fn output(self) -> Result<i32, AnyError> {
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self
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}
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}
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impl SubcommandOutput for Result<(), AnyError> {
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fn output(self) -> Result<i32, AnyError> {
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self.map(|_| 0)
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}
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}
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impl SubcommandOutput for Result<(), std::io::Error> {
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fn output(self) -> Result<i32, AnyError> {
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self.map(|_| 0).map_err(|e| e.into())
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}
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}
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/// Ensure that the subcommand runs in a task, rather than being directly executed. Since some of these
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/// futures are very large, this prevents the stack from getting blown out from passing them by value up
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/// the callchain (especially in debug mode when Rust doesn't have a chance to elide copies!).
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#[inline(always)]
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fn spawn_subcommand<F: Future<Output = T> + 'static, T: SubcommandOutput>(
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f: F,
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) -> JoinHandle<Result<i32, AnyError>> {
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deno_core::unsync::spawn(f.map(|r| r.output()))
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}
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async fn run_subcommand(flags: Flags) -> Result<i32, AnyError> {
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let handle = match flags.subcommand.clone() {
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DenoSubcommand::Bench(bench_flags) => spawn_subcommand(async {
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if bench_flags.watch.is_some() {
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tools::bench::run_benchmarks_with_watch(flags, bench_flags).await
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} else {
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tools::bench::run_benchmarks(flags, bench_flags).await
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}
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}),
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DenoSubcommand::Bundle(bundle_flags) => spawn_subcommand(async {
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tools::bundle::bundle(flags, bundle_flags).await
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}),
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DenoSubcommand::Doc(doc_flags) => {
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spawn_subcommand(async { tools::doc::print_docs(flags, doc_flags).await })
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}
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DenoSubcommand::Eval(eval_flags) => spawn_subcommand(async {
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tools::run::eval_command(flags, eval_flags).await
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}),
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DenoSubcommand::Cache(cache_flags) => spawn_subcommand(async move {
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let factory = CliFactory::from_flags(flags).await?;
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let module_load_preparer = factory.module_load_preparer().await?;
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let emitter = factory.emitter()?;
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let graph_container = factory.graph_container();
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module_load_preparer
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.load_and_type_check_files(&cache_flags.files)
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.await?;
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emitter.cache_module_emits(&graph_container.graph())
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}),
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DenoSubcommand::Check(check_flags) => spawn_subcommand(async move {
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let factory = CliFactory::from_flags(flags).await?;
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let module_load_preparer = factory.module_load_preparer().await?;
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module_load_preparer
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.load_and_type_check_files(&check_flags.files)
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.await
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}),
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DenoSubcommand::Compile(compile_flags) => spawn_subcommand(async {
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tools::compile::compile(flags, compile_flags).await
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}),
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DenoSubcommand::Coverage(coverage_flags) => spawn_subcommand(async {
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tools::coverage::cover_files(flags, coverage_flags).await
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}),
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DenoSubcommand::Fmt(fmt_flags) => {
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spawn_subcommand(
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async move { tools::fmt::format(flags, fmt_flags).await },
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)
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}
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DenoSubcommand::Init(init_flags) => {
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spawn_subcommand(async { tools::init::init_project(init_flags).await })
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}
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DenoSubcommand::Info(info_flags) => {
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spawn_subcommand(async { tools::info::info(flags, info_flags).await })
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}
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DenoSubcommand::Install(install_flags) => spawn_subcommand(async {
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tools::installer::install_command(flags, install_flags).await
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}),
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DenoSubcommand::Jupyter(jupyter_flags) => spawn_subcommand(async {
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tools::jupyter::kernel(flags, jupyter_flags).await
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}),
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DenoSubcommand::Uninstall(uninstall_flags) => spawn_subcommand(async {
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tools::installer::uninstall(uninstall_flags.name, uninstall_flags.root)
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}),
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DenoSubcommand::Lsp => spawn_subcommand(async { lsp::start().await }),
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DenoSubcommand::Lint(lint_flags) => spawn_subcommand(async {
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if lint_flags.rules {
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tools::lint::print_rules_list(
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lint_flags.json,
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lint_flags.maybe_rules_tags,
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);
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Ok(())
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} else {
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tools::lint::lint(flags, lint_flags).await
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}
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}),
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DenoSubcommand::Repl(repl_flags) => {
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spawn_subcommand(async move { tools::repl::run(flags, repl_flags).await })
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}
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DenoSubcommand::Run(run_flags) => spawn_subcommand(async move {
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if run_flags.is_stdin() {
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tools::run::run_from_stdin(flags).await
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} else {
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tools::run::run_script(flags, run_flags).await
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}
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}),
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DenoSubcommand::Task(task_flags) => spawn_subcommand(async {
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tools::task::execute_script(flags, task_flags).await
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}),
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DenoSubcommand::Test(test_flags) => {
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spawn_subcommand(async {
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if let Some(ref coverage_dir) = test_flags.coverage_dir {
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std::fs::create_dir_all(coverage_dir)
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.with_context(|| format!("Failed creating: {coverage_dir}"))?;
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// this is set in order to ensure spawned processes use the same
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// coverage directory
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env::set_var(
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"DENO_UNSTABLE_COVERAGE_DIR",
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PathBuf::from(coverage_dir).canonicalize()?,
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);
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}
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if test_flags.watch.is_some() {
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tools::test::run_tests_with_watch(flags, test_flags).await
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} else {
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tools::test::run_tests(flags, test_flags).await
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}
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})
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}
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DenoSubcommand::Completions(completions_flags) => {
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spawn_subcommand(async move {
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display::write_to_stdout_ignore_sigpipe(&completions_flags.buf)
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})
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}
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DenoSubcommand::Types => spawn_subcommand(async move {
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let types = tsc::get_types_declaration_file_text(flags.unstable);
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display::write_to_stdout_ignore_sigpipe(types.as_bytes())
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}),
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DenoSubcommand::Upgrade(upgrade_flags) => spawn_subcommand(async {
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tools::upgrade::upgrade(flags, upgrade_flags).await
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}),
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DenoSubcommand::Vendor(vendor_flags) => spawn_subcommand(async {
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tools::vendor::vendor(flags, vendor_flags).await
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}),
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};
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handle.await?
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}
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fn setup_panic_hook() {
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// This function does two things inside of the panic hook:
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// - Tokio does not exit the process when a task panics, so we define a custom
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// panic hook to implement this behaviour.
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// - We print a message to stderr to indicate that this is a bug in Deno, and
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// should be reported to us.
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let orig_hook = std::panic::take_hook();
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std::panic::set_hook(Box::new(move |panic_info| {
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eprintln!("\n============================================================");
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eprintln!("Deno has panicked. This is a bug in Deno. Please report this");
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eprintln!("at https://github.com/denoland/deno/issues/new.");
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eprintln!("If you can reliably reproduce this panic, include the");
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eprintln!("reproduction steps and re-run with the RUST_BACKTRACE=1 env");
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eprintln!("var set and include the backtrace in your report.");
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eprintln!();
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eprintln!("Platform: {} {}", env::consts::OS, env::consts::ARCH);
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eprintln!("Version: {}", version::deno());
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eprintln!("Args: {:?}", env::args().collect::<Vec<_>>());
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eprintln!();
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orig_hook(panic_info);
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std::process::exit(1);
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}));
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}
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fn unwrap_or_exit<T>(result: Result<T, AnyError>) -> T {
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match result {
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Ok(value) => value,
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Err(error) => {
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let mut error_string = format!("{error:?}");
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let mut error_code = 1;
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if let Some(e) = error.downcast_ref::<JsError>() {
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error_string = format_js_error(e);
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} else if let Some(e) = error.downcast_ref::<args::LockfileError>() {
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error_string = e.to_string();
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error_code = 10;
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}
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eprintln!(
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"{}: {}",
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colors::red_bold("error"),
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error_string.trim_start_matches("error: ")
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);
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std::process::exit(error_code);
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}
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}
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}
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pub fn main() {
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setup_panic_hook();
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util::unix::raise_fd_limit();
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util::windows::ensure_stdio_open();
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#[cfg(windows)]
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colors::enable_ansi(); // For Windows 10
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deno_runtime::permissions::set_prompt_callbacks(
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Box::new(util::draw_thread::DrawThread::hide),
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Box::new(util::draw_thread::DrawThread::show),
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);
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let args: Vec<String> = env::args().collect();
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// NOTE(lucacasonato): due to new PKU feature introduced in V8 11.6 we need to
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// initalize the V8 platform on a parent thread of all threads that will spawn
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// V8 isolates.
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let future = async move {
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let current_exe_path = current_exe()?;
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let standalone_res =
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match standalone::extract_standalone(¤t_exe_path, args.clone())
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.await
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{
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Ok(Some((metadata, eszip))) => standalone::run(eszip, metadata).await,
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Ok(None) => Ok(()),
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Err(err) => Err(err),
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};
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// TODO(bartlomieju): doesn't handle exit code set by the runtime properly
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unwrap_or_exit(standalone_res);
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let flags = match flags_from_vec(args) {
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Ok(flags) => flags,
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Err(err @ clap::Error { .. })
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if err.kind() == clap::error::ErrorKind::DisplayHelp
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|| err.kind() == clap::error::ErrorKind::DisplayVersion =>
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{
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err.print().unwrap();
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std::process::exit(0);
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}
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Err(err) => unwrap_or_exit(Err(AnyError::from(err))),
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};
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let default_v8_flags = match flags.subcommand {
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// Using same default as VSCode:
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// https://github.com/microsoft/vscode/blob/48d4ba271686e8072fc6674137415bc80d936bc7/extensions/typescript-language-features/src/configuration/configuration.ts#L213-L214
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DenoSubcommand::Lsp => vec!["--max-old-space-size=3072".to_string()],
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_ => vec![],
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};
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init_v8_flags(&default_v8_flags, &flags.v8_flags, get_v8_flags_from_env());
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deno_core::JsRuntime::init_platform(None);
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util::logger::init(flags.log_level);
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run_subcommand(flags).await
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};
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let exit_code =
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unwrap_or_exit(create_and_run_current_thread_with_maybe_metrics(future));
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std::process::exit(exit_code);
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}
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