mirror of
https://github.com/denoland/deno
synced 2024-08-27 12:00:17 +00:00
306 lines
9.4 KiB
Rust
306 lines
9.4 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use crate::args::jsr_url;
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use crate::file_fetcher::FileFetcher;
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use dashmap::DashMap;
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use deno_cache_dir::HttpCache;
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use deno_core::parking_lot::Mutex;
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use deno_core::serde_json;
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use deno_core::ModuleSpecifier;
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use deno_graph::packages::JsrPackageInfo;
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use deno_graph::packages::JsrPackageVersionInfo;
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use deno_lockfile::Lockfile;
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use deno_runtime::permissions::PermissionsContainer;
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use deno_semver::jsr::JsrPackageReqReference;
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use deno_semver::package::PackageNv;
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use deno_semver::package::PackageReq;
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use std::borrow::Cow;
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use std::sync::Arc;
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/// Keep in sync with `JsrFetchResolver`!
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#[derive(Debug)]
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pub struct JsrCacheResolver {
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nv_by_req: DashMap<PackageReq, Option<PackageNv>>,
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/// The `module_graph` field of the version infos should be forcibly absent.
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/// It can be large and we don't want to store it.
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info_by_nv: DashMap<PackageNv, Option<Arc<JsrPackageVersionInfo>>>,
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info_by_name: DashMap<String, Option<Arc<JsrPackageInfo>>>,
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cache: Arc<dyn HttpCache>,
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}
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impl JsrCacheResolver {
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pub fn new(
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cache: Arc<dyn HttpCache>,
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lockfile: Option<Arc<Mutex<Lockfile>>>,
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) -> Self {
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let nv_by_req = DashMap::new();
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if let Some(lockfile) = lockfile {
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for (req_url, nv_url) in &lockfile.lock().content.packages.specifiers {
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let Some(req) = req_url.strip_prefix("jsr:") else {
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continue;
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};
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let Some(nv) = nv_url.strip_prefix("jsr:") else {
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continue;
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};
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let Ok(req) = PackageReq::from_str(req) else {
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continue;
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};
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let Ok(nv) = PackageNv::from_str(nv) else {
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continue;
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};
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nv_by_req.insert(req, Some(nv));
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}
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}
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Self {
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nv_by_req,
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info_by_nv: Default::default(),
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info_by_name: Default::default(),
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cache: cache.clone(),
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}
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}
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pub fn req_to_nv(&self, req: &PackageReq) -> Option<PackageNv> {
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if let Some(nv) = self.nv_by_req.get(req) {
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return nv.value().clone();
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}
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let maybe_get_nv = || {
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let name = req.name.clone();
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let package_info = self.package_info(&name)?;
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// Find the first matching version of the package which is cached.
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let mut versions = package_info.versions.keys().collect::<Vec<_>>();
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versions.sort();
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let version = versions
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.into_iter()
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.rev()
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.find(|v| {
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if req.version_req.tag().is_some() || !req.version_req.matches(v) {
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return false;
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}
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let nv = PackageNv {
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name: name.clone(),
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version: (*v).clone(),
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};
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self.package_version_info(&nv).is_some()
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})
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.cloned()?;
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Some(PackageNv { name, version })
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};
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let nv = maybe_get_nv();
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self.nv_by_req.insert(req.clone(), nv.clone());
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nv
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}
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pub fn jsr_to_registry_url(
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&self,
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req_ref: &JsrPackageReqReference,
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) -> Option<ModuleSpecifier> {
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let req = req_ref.req().clone();
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let maybe_nv = self.req_to_nv(&req);
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let nv = maybe_nv.as_ref()?;
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let info = self.package_version_info(nv)?;
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let path = info.export(&normalize_export_name(req_ref.sub_path()))?;
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jsr_url()
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.join(&format!("{}/{}/{}", &nv.name, &nv.version, &path))
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.ok()
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}
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pub fn lookup_export_for_path(
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&self,
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nv: &PackageNv,
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path: &str,
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) -> Option<String> {
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let info = self.package_version_info(nv)?;
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let path = path.strip_prefix("./").unwrap_or(path);
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for (export, path_) in info.exports() {
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if path_.strip_prefix("./").unwrap_or(path_) == path {
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return Some(export.strip_prefix("./").unwrap_or(export).to_string());
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}
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}
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None
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}
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pub fn lookup_req_for_nv(&self, nv: &PackageNv) -> Option<PackageReq> {
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for entry in self.nv_by_req.iter() {
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let Some(nv_) = entry.value() else {
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continue;
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};
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if nv_ == nv {
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return Some(entry.key().clone());
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}
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}
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None
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}
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pub fn package_info(&self, name: &str) -> Option<Arc<JsrPackageInfo>> {
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if let Some(info) = self.info_by_name.get(name) {
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return info.value().clone();
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}
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let read_cached_package_info = || {
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let meta_url = jsr_url().join(&format!("{}/meta.json", name)).ok()?;
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let meta_bytes = read_cached_url(&meta_url, &self.cache)?;
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serde_json::from_slice::<JsrPackageInfo>(&meta_bytes).ok()
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};
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let info = read_cached_package_info().map(Arc::new);
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self.info_by_name.insert(name.to_string(), info.clone());
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info
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}
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pub fn package_version_info(
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&self,
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nv: &PackageNv,
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) -> Option<Arc<JsrPackageVersionInfo>> {
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if let Some(info) = self.info_by_nv.get(nv) {
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return info.value().clone();
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}
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let read_cached_package_version_info = || {
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let meta_url = jsr_url()
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.join(&format!("{}/{}_meta.json", &nv.name, &nv.version))
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.ok()?;
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let meta_bytes = read_cached_url(&meta_url, &self.cache)?;
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partial_jsr_package_version_info_from_slice(&meta_bytes).ok()
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};
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let info = read_cached_package_version_info().map(Arc::new);
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self.info_by_nv.insert(nv.clone(), info.clone());
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info
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}
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}
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fn read_cached_url(
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url: &ModuleSpecifier,
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cache: &Arc<dyn HttpCache>,
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) -> Option<Vec<u8>> {
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cache
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.read_file_bytes(
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&cache.cache_item_key(url).ok()?,
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None,
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deno_cache_dir::GlobalToLocalCopy::Disallow,
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)
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.ok()?
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}
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/// This is similar to a subset of `JsrCacheResolver` which fetches rather than
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/// just reads the cache. Keep in sync!
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#[derive(Debug)]
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pub struct JsrFetchResolver {
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nv_by_req: DashMap<PackageReq, Option<PackageNv>>,
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/// The `module_graph` field of the version infos should be forcibly absent.
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/// It can be large and we don't want to store it.
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info_by_nv: DashMap<PackageNv, Option<Arc<JsrPackageVersionInfo>>>,
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info_by_name: DashMap<String, Option<Arc<JsrPackageInfo>>>,
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file_fetcher: FileFetcher,
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}
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impl JsrFetchResolver {
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pub fn new(file_fetcher: FileFetcher) -> Self {
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Self {
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nv_by_req: Default::default(),
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info_by_nv: Default::default(),
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info_by_name: Default::default(),
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file_fetcher,
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}
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}
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pub async fn req_to_nv(&self, req: &PackageReq) -> Option<PackageNv> {
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if let Some(nv) = self.nv_by_req.get(req) {
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return nv.value().clone();
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}
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let maybe_get_nv = || async {
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let name = req.name.clone();
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let package_info = self.package_info(&name).await?;
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// Find the first matching version of the package which is cached.
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let mut versions = package_info.versions.keys().collect::<Vec<_>>();
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versions.sort();
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let version = versions
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.into_iter()
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.rev()
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.find(|v| req.version_req.tag().is_none() && req.version_req.matches(v))
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.cloned()?;
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Some(PackageNv { name, version })
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};
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let nv = maybe_get_nv().await;
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self.nv_by_req.insert(req.clone(), nv.clone());
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nv
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}
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pub async fn package_info(&self, name: &str) -> Option<Arc<JsrPackageInfo>> {
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if let Some(info) = self.info_by_name.get(name) {
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return info.value().clone();
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}
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let read_cached_package_info = || async {
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let meta_url = jsr_url().join(&format!("{}/meta.json", name)).ok()?;
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let file = self
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.file_fetcher
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.fetch(&meta_url, PermissionsContainer::allow_all())
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.await
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.ok()?;
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serde_json::from_slice::<JsrPackageInfo>(&file.source).ok()
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};
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let info = read_cached_package_info().await.map(Arc::new);
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self.info_by_name.insert(name.to_string(), info.clone());
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info
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}
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pub async fn package_version_info(
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&self,
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nv: &PackageNv,
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) -> Option<Arc<JsrPackageVersionInfo>> {
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if let Some(info) = self.info_by_nv.get(nv) {
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return info.value().clone();
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}
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let read_cached_package_version_info = || async {
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let meta_url = jsr_url()
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.join(&format!("{}/{}_meta.json", &nv.name, &nv.version))
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.ok()?;
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let file = self
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.file_fetcher
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.fetch(&meta_url, PermissionsContainer::allow_all())
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.await
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.ok()?;
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partial_jsr_package_version_info_from_slice(&file.source).ok()
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};
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let info = read_cached_package_version_info().await.map(Arc::new);
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self.info_by_nv.insert(nv.clone(), info.clone());
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info
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}
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}
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// TODO(nayeemrmn): This is duplicated from a private function in deno_graph
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// 0.65.1. Make it public or cleanup otherwise.
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fn normalize_export_name(sub_path: Option<&str>) -> Cow<str> {
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let Some(sub_path) = sub_path else {
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return Cow::Borrowed(".");
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};
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if sub_path.is_empty() || matches!(sub_path, "/" | ".") {
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Cow::Borrowed(".")
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} else {
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let sub_path = if sub_path.starts_with('/') {
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Cow::Owned(format!(".{}", sub_path))
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} else if !sub_path.starts_with("./") {
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Cow::Owned(format!("./{}", sub_path))
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} else {
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Cow::Borrowed(sub_path)
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};
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if let Some(prefix) = sub_path.strip_suffix('/') {
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Cow::Owned(prefix.to_string())
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} else {
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sub_path
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}
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}
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}
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/// This is a roundabout way of deserializing `JsrPackageVersionInfo`,
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/// because we only want the `exports` field and `module_graph` is large.
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fn partial_jsr_package_version_info_from_slice(
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slice: &[u8],
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) -> serde_json::Result<JsrPackageVersionInfo> {
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let mut info = serde_json::from_slice::<serde_json::Value>(slice)?;
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Ok(JsrPackageVersionInfo {
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manifest: Default::default(), // not used by the LSP (only caching checks this in deno_graph)
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exports: info
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.as_object_mut()
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.and_then(|o| o.remove("exports"))
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.unwrap_or_default(),
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module_graph: None,
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})
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}
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