mirror of
https://github.com/denoland/deno
synced 2024-08-28 12:29:31 +00:00
![David Sherret](/assets/img/avatar_default.png)
We were missing saying that a file is CJS when some Deno code imported from the node_modules directory at runtime.
300 lines
8.9 KiB
Rust
300 lines
8.9 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use crate::args::CacheSetting;
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use crate::errors::get_error_class_name;
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use crate::file_fetcher::FetchOptions;
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use crate::file_fetcher::FileFetcher;
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use crate::npm::CliNpmResolver;
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use crate::util::fs::atomic_write_file;
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use deno_ast::MediaType;
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use deno_core::futures;
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use deno_core::futures::FutureExt;
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use deno_core::ModuleSpecifier;
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use deno_graph::source::CacheInfo;
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use deno_graph::source::LoadFuture;
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use deno_graph::source::LoadResponse;
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use deno_graph::source::Loader;
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use deno_runtime::permissions::PermissionsContainer;
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use std::collections::HashMap;
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use std::path::Path;
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use std::path::PathBuf;
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use std::sync::Arc;
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use std::time::SystemTime;
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mod cache_db;
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mod caches;
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mod check;
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mod common;
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mod deno_dir;
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mod disk_cache;
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mod emit;
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mod fast_check;
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mod incremental;
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mod module_info;
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mod node;
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mod parsed_source;
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pub use caches::Caches;
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pub use check::TypeCheckCache;
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pub use common::FastInsecureHasher;
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pub use deno_dir::DenoDir;
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pub use deno_dir::DenoDirProvider;
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pub use disk_cache::DiskCache;
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pub use emit::EmitCache;
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pub use fast_check::FastCheckCache;
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pub use incremental::IncrementalCache;
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pub use module_info::ModuleInfoCache;
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pub use node::NodeAnalysisCache;
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pub use parsed_source::LazyGraphSourceParser;
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pub use parsed_source::ParsedSourceCache;
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/// Permissions used to save a file in the disk caches.
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pub const CACHE_PERM: u32 = 0o644;
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#[derive(Debug, Clone)]
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pub struct RealDenoCacheEnv;
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impl deno_cache_dir::DenoCacheEnv for RealDenoCacheEnv {
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fn read_file_bytes(&self, path: &Path) -> std::io::Result<Option<Vec<u8>>> {
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match std::fs::read(path) {
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Ok(s) => Ok(Some(s)),
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Err(err) if err.kind() == std::io::ErrorKind::NotFound => Ok(None),
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Err(err) => Err(err),
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}
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}
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fn atomic_write_file(
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&self,
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path: &Path,
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bytes: &[u8],
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) -> std::io::Result<()> {
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atomic_write_file(path, bytes, CACHE_PERM)
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}
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fn modified(&self, path: &Path) -> std::io::Result<Option<SystemTime>> {
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match std::fs::metadata(path) {
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Ok(metadata) => Ok(Some(
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metadata.modified().unwrap_or_else(|_| SystemTime::now()),
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)),
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Err(err) if err.kind() == std::io::ErrorKind::NotFound => Ok(None),
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Err(err) => Err(err),
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}
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}
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fn is_file(&self, path: &Path) -> bool {
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path.is_file()
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}
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fn time_now(&self) -> SystemTime {
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SystemTime::now()
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}
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}
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pub type GlobalHttpCache = deno_cache_dir::GlobalHttpCache<RealDenoCacheEnv>;
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pub type LocalHttpCache = deno_cache_dir::LocalHttpCache<RealDenoCacheEnv>;
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pub type LocalLspHttpCache =
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deno_cache_dir::LocalLspHttpCache<RealDenoCacheEnv>;
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pub use deno_cache_dir::HttpCache;
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use self::module_info::ModuleInfoCacheSourceHash;
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/// A "wrapper" for the FileFetcher and DiskCache for the Deno CLI that provides
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/// a concise interface to the DENO_DIR when building module graphs.
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pub struct FetchCacher {
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emit_cache: EmitCache,
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file_fetcher: Arc<FileFetcher>,
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file_header_overrides: HashMap<ModuleSpecifier, HashMap<String, String>>,
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global_http_cache: Arc<GlobalHttpCache>,
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npm_resolver: Arc<dyn CliNpmResolver>,
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module_info_cache: Arc<ModuleInfoCache>,
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permissions: PermissionsContainer,
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cache_info_enabled: bool,
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}
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impl FetchCacher {
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pub fn new(
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emit_cache: EmitCache,
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file_fetcher: Arc<FileFetcher>,
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file_header_overrides: HashMap<ModuleSpecifier, HashMap<String, String>>,
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global_http_cache: Arc<GlobalHttpCache>,
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npm_resolver: Arc<dyn CliNpmResolver>,
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module_info_cache: Arc<ModuleInfoCache>,
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permissions: PermissionsContainer,
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) -> Self {
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Self {
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emit_cache,
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file_fetcher,
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file_header_overrides,
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global_http_cache,
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npm_resolver,
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module_info_cache,
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permissions,
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cache_info_enabled: false,
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}
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}
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/// The cache information takes a bit of time to fetch and it's
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/// not always necessary. It should only be enabled for deno info.
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pub fn enable_loading_cache_info(&mut self) {
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self.cache_info_enabled = true;
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}
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// DEPRECATED: Where the file is stored and how it's stored should be an implementation
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// detail of the cache.
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//
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// todo(dsheret): remove once implementing
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// * https://github.com/denoland/deno/issues/17707
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// * https://github.com/denoland/deno/issues/17703
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#[deprecated(
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note = "There should not be a way to do this because the file may not be cached at a local path in the future."
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)]
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fn get_local_path(&self, specifier: &ModuleSpecifier) -> Option<PathBuf> {
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// TODO(@kitsonk) fix when deno_graph does not query cache for synthetic
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// modules
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if specifier.scheme() == "flags" {
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None
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} else if specifier.scheme() == "file" {
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specifier.to_file_path().ok()
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} else {
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#[allow(deprecated)]
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self
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.global_http_cache
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.get_global_cache_filepath(specifier)
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.ok()
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}
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}
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}
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impl Loader for FetchCacher {
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fn get_cache_info(&self, specifier: &ModuleSpecifier) -> Option<CacheInfo> {
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if !self.cache_info_enabled {
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return None;
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}
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#[allow(deprecated)]
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let local = self.get_local_path(specifier)?;
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if local.is_file() {
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let emit = self
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.emit_cache
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.get_emit_filepath(specifier)
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.filter(|p| p.is_file());
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Some(CacheInfo {
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local: Some(local),
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emit,
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map: None,
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})
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} else {
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None
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}
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}
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fn load(
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&mut self,
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specifier: &ModuleSpecifier,
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options: deno_graph::source::LoadOptions,
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) -> LoadFuture {
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use deno_graph::source::CacheSetting as LoaderCacheSetting;
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if specifier.scheme() == "file"
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&& specifier.path().contains("/node_modules/")
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{
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// The specifier might be in a completely different symlinked tree than
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// what the node_modules url is in (ex. `/my-project-1/node_modules`
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// symlinked to `/my-project-2/node_modules`), so first we checked if the path
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// is in a node_modules dir to avoid needlessly canonicalizing, then now compare
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// against the canonicalized specifier.
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let specifier =
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crate::node::resolve_specifier_into_node_modules(specifier);
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if self.npm_resolver.in_npm_package(&specifier) {
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return Box::pin(futures::future::ready(Ok(Some(
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LoadResponse::External { specifier },
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))));
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}
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}
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let file_fetcher = self.file_fetcher.clone();
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let file_header_overrides = self.file_header_overrides.clone();
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let permissions = self.permissions.clone();
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let specifier = specifier.clone();
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async move {
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let maybe_cache_setting = match options.cache_setting {
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LoaderCacheSetting::Use => None,
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LoaderCacheSetting::Reload => {
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if matches!(file_fetcher.cache_setting(), CacheSetting::Only) {
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return Err(deno_core::anyhow::anyhow!(
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"Failed to resolve version constraint. Try running again without --cached-only"
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));
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}
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Some(CacheSetting::ReloadAll)
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}
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LoaderCacheSetting::Only => Some(CacheSetting::Only),
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};
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file_fetcher
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.fetch_with_options(FetchOptions {
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specifier: &specifier,
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permissions,
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maybe_accept: None,
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maybe_cache_setting: maybe_cache_setting.as_ref(),
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maybe_checksum: options.maybe_checksum,
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})
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.await
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.map(|file| {
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let maybe_headers =
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match (file.maybe_headers, file_header_overrides.get(&specifier)) {
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(Some(headers), Some(overrides)) => {
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Some(headers.into_iter().chain(overrides.clone()).collect())
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}
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(Some(headers), None) => Some(headers),
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(None, Some(overrides)) => Some(overrides.clone()),
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(None, None) => None,
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};
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Ok(Some(LoadResponse::Module {
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specifier: file.specifier,
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maybe_headers,
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content: file.source,
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}))
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})
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.unwrap_or_else(|err| {
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if let Some(io_err) = err.downcast_ref::<std::io::Error>() {
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if io_err.kind() == std::io::ErrorKind::NotFound {
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return Ok(None);
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} else {
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return Err(err);
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}
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}
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let error_class_name = get_error_class_name(&err);
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match error_class_name {
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"NotFound" => Ok(None),
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"NotCached" if options.cache_setting == LoaderCacheSetting::Only => Ok(None),
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_ => Err(err),
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}
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})
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}
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.boxed()
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}
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fn cache_module_info(
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&mut self,
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specifier: &ModuleSpecifier,
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source: &Arc<[u8]>,
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module_info: &deno_graph::ModuleInfo,
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) {
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let source_hash = ModuleInfoCacheSourceHash::from_source(source);
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let result = self.module_info_cache.set_module_info(
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specifier,
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MediaType::from_specifier(specifier),
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&source_hash,
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module_info,
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);
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if let Err(err) = result {
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log::debug!(
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"Error saving module cache info for {}. {:#}",
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specifier,
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err
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);
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}
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}
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}
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