mirror of
https://github.com/denoland/deno
synced 2024-08-27 20:09:17 +00:00
206 lines
6.2 KiB
Rust
206 lines
6.2 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 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_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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use super::cache::LSP_DISALLOW_GLOBAL_TO_LOCAL_COPY;
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#[derive(Debug)]
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pub struct JsrResolver {
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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<JsrPackageVersionInfo>>,
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info_by_name: DashMap<String, Option<JsrPackageInfo>>,
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cache: Arc<dyn HttpCache>,
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}
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impl JsrResolver {
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pub fn from_cache_and_lockfile(
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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 jsr_to_registry_url(
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&self,
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specifier: &ModuleSpecifier,
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) -> Option<ModuleSpecifier> {
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let req_ref = JsrPackageReqReference::from_str(specifier.as_str()).ok()?;
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let req = req_ref.req().clone();
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let maybe_nv = self.nv_by_req.entry(req.clone()).or_insert_with(|| {
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let name = req.name.clone();
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let maybe_package_info = self
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.info_by_name
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.entry(name.clone())
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.or_insert_with(|| read_cached_package_info(&name, &self.cache));
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let package_info = maybe_package_info.as_ref()?;
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// Find the first matching version of the package which is cached.
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let version = package_info
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.versions
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.keys()
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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
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.info_by_nv
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.entry(nv.clone())
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.or_insert_with(|| {
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read_cached_package_version_info(&nv, &self.cache)
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})
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.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_nv.as_ref()?;
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let maybe_info = self
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.info_by_nv
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.entry(nv.clone())
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.or_insert_with(|| read_cached_package_version_info(nv, &self.cache));
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let info = maybe_info.as_ref()?;
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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 maybe_info = self
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.info_by_nv
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.entry(nv.clone())
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.or_insert_with(|| read_cached_package_version_info(nv, &self.cache));
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let info = maybe_info.as_ref()?;
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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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}
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fn read_cached_package_info(
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name: &str,
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cache: &Arc<dyn HttpCache>,
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) -> Option<JsrPackageInfo> {
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let meta_url = jsr_url().join(&format!("{}/meta.json", name)).ok()?;
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let meta_cache_item_key = cache.cache_item_key(&meta_url).ok()?;
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let meta_bytes = cache
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.read_file_bytes(
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&meta_cache_item_key,
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None,
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LSP_DISALLOW_GLOBAL_TO_LOCAL_COPY,
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)
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.ok()??;
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serde_json::from_slice::<JsrPackageInfo>(&meta_bytes).ok()
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}
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fn read_cached_package_version_info(
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nv: &PackageNv,
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cache: &Arc<dyn HttpCache>,
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) -> Option<JsrPackageVersionInfo> {
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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_cache_item_key = cache.cache_item_key(&meta_url).ok()?;
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let meta_bytes = cache
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.read_file_bytes(
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&meta_cache_item_key,
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None,
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LSP_DISALLOW_GLOBAL_TO_LOCAL_COPY,
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)
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.ok()??;
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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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let mut info =
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serde_json::from_slice::<serde_json::Value>(&meta_bytes).ok()?;
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Some(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.as_object_mut()?.remove("exports")?,
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module_graph: None,
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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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