refactor: registry data kinds cleanup

src/cargo/core/package.rs

@@ -10,10 +10,10 @@ use std::time::{Duration, Instant};
 
 use anyhow::Context;
 use bytesize::ByteSize;
-use curl::easy::{Easy, HttpVersion};
+use curl::easy::Easy;
 use curl::multi::{EasyHandle, Multi};
 use lazycell::LazyCell;
-use log::{debug, warn};
+use log::debug;
 use semver::Version;
 use serde::Serialize;
 
@@ -725,32 +725,8 @@ impl<'a, 'cfg> Downloads<'a, 'cfg> {
             handle.http_headers(headers)?;
         }
 
-        // Enable HTTP/2 to be used as it'll allow true multiplexing which makes
-        // downloads much faster.
-        //
-        // Currently Cargo requests the `http2` feature of the `curl` crate
-        // which means it should always be built in. On OSX, however, we ship
-        // cargo still linked against the system libcurl. Building curl with
-        // ALPN support for HTTP/2 requires newer versions of OSX (the
-        // SecureTransport API) than we want to ship Cargo for. By linking Cargo
-        // against the system libcurl then older curl installations won't use
-        // HTTP/2 but newer ones will. All that to basically say we ignore
-        // errors here on OSX, but consider this a fatal error to not activate
-        // HTTP/2 on all other platforms.
-        if self.set.multiplexing {
-            crate::try_old_curl!(handle.http_version(HttpVersion::V2), "HTTP2");
-        } else {
-            handle.http_version(HttpVersion::V11)?;
-        }
-
-        // This is an option to `libcurl` which indicates that if there's a
-        // bunch of parallel requests to the same host they all wait until the
-        // pipelining status of the host is known. This means that we won't
-        // initiate dozens of connections to crates.io, but rather only one.
-        // Once the main one is opened we realized that pipelining is possible
-        // and multiplexing is possible with static.crates.io. All in all this
-        // reduces the number of connections down to a more manageable state.
-        crate::try_old_curl!(handle.pipewait(true), "pipewait");
+        // Enable HTTP/2 if possible.
+        crate::try_old_curl_http2_pipewait!(self.set.multiplexing, handle);
 
         handle.write_function(move |buf| {
             debug!("{} - {} bytes of data", token, buf.len());

src/cargo/core/package_id.rs

@@ -196,6 +196,11 @@ impl PackageId {
     pub fn stable_hash(self, workspace: &Path) -> PackageIdStableHash<'_> {
         PackageIdStableHash(self, workspace)
     }
+
+    /// Filename of the `.crate` tarball, e.g., `once_cell-1.18.0.crate`.
+    pub fn tarball_name(&self) -> String {
+        format!("{}-{}.crate", self.name(), self.version())
+    }
 }
 
 pub struct PackageIdStableHash<'a>(PackageId, &'a Path);

src/cargo/ops/cargo_package.rs

@@ -127,7 +127,7 @@ pub fn package_one(
         super::check_dep_has_version(dep, false)?;
     }
 
-    let filename = format!("{}-{}.crate", pkg.name(), pkg.version());
+    let filename = pkg.package_id().tarball_name();
     let dir = ws.target_dir().join("package");
     let mut dst = {
         let tmp = format!(".{}", filename);

src/cargo/sources/registry/download.rs

@@ -4,10 +4,10 @@
 //! [`RemoteRegistry`]: super::remote::RemoteRegistry
 
 use anyhow::Context;
+use cargo_util::registry::make_dep_path;
 use cargo_util::Sha256;
 
 use crate::core::PackageId;
-use crate::sources::registry::make_dep_prefix;
 use crate::sources::registry::MaybeLock;
 use crate::sources::registry::RegistryConfig;
 use crate::util::auth;
@@ -25,11 +25,6 @@ const PREFIX_TEMPLATE: &str = "{prefix}";
 const LOWER_PREFIX_TEMPLATE: &str = "{lowerprefix}";
 const CHECKSUM_TEMPLATE: &str = "{sha256-checksum}";
 
-/// Filename of the `.crate` tarball, e.g., `once_cell-1.18.0.crate`.
-pub(super) fn filename(pkg: PackageId) -> String {
-    format!("{}-{}.crate", pkg.name(), pkg.version())
-}
-
 /// Checks if `pkg` is downloaded and ready under the directory at `cache_path`.
 /// If not, returns a URL to download it from.
 ///
@@ -41,8 +36,7 @@ pub(super) fn download(
     checksum: &str,
     registry_config: RegistryConfig,
 ) -> CargoResult<MaybeLock> {
-    let filename = filename(pkg);
-    let path = cache_path.join(&filename);
+    let path = cache_path.join(&pkg.tarball_name());
     let path = config.assert_package_cache_locked(&path);
 
     // Attempt to open a read-only copy first to avoid an exclusive write
@@ -74,7 +68,7 @@ pub(super) fn download(
         )
         .unwrap();
     } else {
-        let prefix = make_dep_prefix(&*pkg.name());
+        let prefix = make_dep_path(&pkg.name(), true);
         url = url
             .replace(CRATE_TEMPLATE, &*pkg.name())
             .replace(VERSION_TEMPLATE, &pkg.version().to_string())
@@ -113,9 +107,8 @@ pub(super) fn finish_download(
         anyhow::bail!("failed to verify the checksum of `{}`", pkg)
     }
 
-    let filename = filename(pkg);
     cache_path.create_dir()?;
-    let path = cache_path.join(&filename);
+    let path = cache_path.join(&pkg.tarball_name());
     let path = config.assert_package_cache_locked(&path);
     let mut dst = OpenOptions::new()
         .create(true)
@@ -142,7 +135,7 @@ pub(super) fn is_crate_downloaded(
     config: &Config,
     pkg: PackageId,
 ) -> bool {
-    let path = cache_path.join(filename(pkg));
+    let path = cache_path.join(pkg.tarball_name());
     let path = config.assert_package_cache_locked(&path);
     if let Ok(meta) = fs::metadata(path) {
         return meta.len() > 0;

src/cargo/sources/registry/http_remote.rs

@@ -1,7 +1,7 @@
 //! Access to a HTTP-based crate registry. See [`HttpRegistry`] for details.
 
 use crate::core::{PackageId, SourceId};
-use crate::ops::{self};
+use crate::ops;
 use crate::sources::registry::download;
 use crate::sources::registry::MaybeLock;
 use crate::sources::registry::{LoadResponse, RegistryConfig, RegistryData};
@@ -11,9 +11,9 @@ use crate::util::network::sleep::SleepTracker;
 use crate::util::{auth, Config, Filesystem, IntoUrl, Progress, ProgressStyle};
 use anyhow::Context;
 use cargo_util::paths;
-use curl::easy::{Easy, HttpVersion, List};
+use curl::easy::{Easy, List};
 use curl::multi::{EasyHandle, Multi};
-use log::{debug, trace, warn};
+use log::{debug, trace};
 use std::cell::RefCell;
 use std::collections::{HashMap, HashSet};
 use std::fs::{self, File};
@@ -383,7 +383,7 @@ impl<'cfg> HttpRegistry<'cfg> {
         }
         let config_json_path = self
             .assert_index_locked(&self.index_path)
-            .join("config.json");
+            .join(RegistryConfig::NAME);
         match fs::read(&config_json_path) {
             Ok(raw_data) => match serde_json::from_slice(&raw_data) {
                 Ok(json) => {
@@ -404,12 +404,12 @@ impl<'cfg> HttpRegistry<'cfg> {
     fn config(&mut self) -> Poll<CargoResult<&RegistryConfig>> {
         debug!("loading config");
         let index_path = self.assert_index_locked(&self.index_path);
-        let config_json_path = index_path.join("config.json");
-        if self.is_fresh(Path::new("config.json")) && self.config_cached()?.is_some() {
+        let config_json_path = index_path.join(RegistryConfig::NAME);
+        if self.is_fresh(Path::new(RegistryConfig::NAME)) && self.config_cached()?.is_some() {
             return Poll::Ready(Ok(self.registry_config.as_ref().unwrap()));
         }
 
-        match ready!(self.load(Path::new(""), Path::new("config.json"), None)?) {
+        match ready!(self.load(Path::new(""), Path::new(RegistryConfig::NAME), None)?) {
             LoadResponse::Data {
                 raw_data,
                 index_version: _,
@@ -543,7 +543,7 @@ impl<'cfg> RegistryData for HttpRegistry<'cfg> {
                 }
                 StatusCode::Unauthorized
                     if !self.auth_required
-                        && path == Path::new("config.json")
+                        && path == Path::new(RegistryConfig::NAME)
                         && self.config.cli_unstable().registry_auth =>
                 {
                     debug!("re-attempting request for config.json with authorization included.");
@@ -593,7 +593,7 @@ impl<'cfg> RegistryData for HttpRegistry<'cfg> {
             }
         }
 
-        if path != Path::new("config.json") {
+        if path != Path::new(RegistryConfig::NAME) {
             self.auth_required = ready!(self.config()?).auth_required;
         } else if !self.auth_required {
             // Check if there's a cached config that says auth is required.
@@ -618,20 +618,7 @@ impl<'cfg> RegistryData for HttpRegistry<'cfg> {
         handle.follow_location(true)?;
 
         // Enable HTTP/2 if possible.
-        if self.multiplexing {
-            crate::try_old_curl!(handle.http_version(HttpVersion::V2), "HTTP2");
-        } else {
-            handle.http_version(HttpVersion::V11)?;
-        }
-
-        // This is an option to `libcurl` which indicates that if there's a
-        // bunch of parallel requests to the same host they all wait until the
-        // pipelining status of the host is known. This means that we won't
-        // initiate dozens of connections to crates.io, but rather only one.
-        // Once the main one is opened we realized that pipelining is possible
-        // and multiplexing is possible with static.crates.io. All in all this
-        // reduces the number of connections done to a more manageable state.
-        crate::try_old_curl!(handle.pipewait(true), "pipewait");
+        crate::try_old_curl_http2_pipewait!(self.multiplexing, handle);
 
         let mut headers = List::new();
         // Include a header to identify the protocol. This allows the server to

src/cargo/sources/registry/local.rs

@@ -167,17 +167,15 @@ impl<'cfg> RegistryData for LocalRegistry<'cfg> {
     }
 
     fn download(&mut self, pkg: PackageId, checksum: &str) -> CargoResult<MaybeLock> {
-        let crate_file = format!("{}-{}.crate", pkg.name(), pkg.version());
-
         // Note that the usage of `into_path_unlocked` here is because the local
         // crate files here never change in that we're not the one writing them,
         // so it's not our responsibility to synchronize access to them.
-        let path = self.root.join(&crate_file).into_path_unlocked();
+        let path = self.root.join(&pkg.tarball_name()).into_path_unlocked();
         let mut crate_file = paths::open(&path)?;
 
         // If we've already got an unpacked version of this crate, then skip the
         // checksum below as it is in theory already verified.
-        let dst = format!("{}-{}", pkg.name(), pkg.version());
+        let dst = path.file_stem().unwrap();
         if self.src_path.join(dst).into_path_unlocked().exists() {
             return Ok(MaybeLock::Ready(crate_file));
         }

src/cargo/sources/registry/mod.rs

@@ -856,6 +856,11 @@ impl<'cfg> Source for RegistrySource<'cfg> {
     }
 }
 
+impl RegistryConfig {
+    /// File name of [`RegistryConfig`].
+    const NAME: &str = "config.json";
+}
+
 /// Get the maximum upack size that Cargo permits
 /// based on a given `size` of your compressed file.
 ///
@@ -903,9 +908,3 @@ fn max_unpack_size(config: &Config, size: u64) -> u64 {
 
     u64::max(max_unpack_size, size * max_compression_ratio as u64)
 }
-
-/// Constructs a path to a dependency in the registry index on filesystem.
-/// See [`cargo_util::registry::make_dep_path`] for more.
-fn make_dep_prefix(name: &str) -> String {
-    cargo_util::registry::make_dep_path(name, true)
-}

src/cargo/sources/registry/remote.rs

@@ -103,14 +103,9 @@ impl<'cfg> RemoteRegistry<'cfg> {
     /// Creates intermediate dirs and initialize the repository.
     fn repo(&self) -> CargoResult<&git2::Repository> {
         self.repo.try_borrow_with(|| {
+            trace!("acquiring registry index lock");
             let path = self.config.assert_package_cache_locked(&self.index_path);
 
-            if let Ok(repo) = git2::Repository::open(&path) {
-                trace!("opened a repo without a lock");
-                return Ok(repo);
-            }
-
-            trace!("acquiring registry index lock");
             match git2::Repository::open(&path) {
                 Ok(repo) => Ok(repo),
                 Err(_) => {
@@ -210,8 +205,6 @@ impl<'cfg> RemoteRegistry<'cfg> {
     }
 }
 
-const LAST_UPDATED_FILE: &str = ".last-updated";
-
 impl<'cfg> RegistryData for RemoteRegistry<'cfg> {
     fn prepare(&self) -> CargoResult<()> {
         self.repo()?;
@@ -311,7 +304,7 @@ impl<'cfg> RegistryData for RemoteRegistry<'cfg> {
         debug!("loading config");
         self.prepare()?;
         self.config.assert_package_cache_locked(&self.index_path);
-        match ready!(self.load(Path::new(""), Path::new("config.json"), None)?) {
+        match ready!(self.load(Path::new(""), Path::new(RegistryConfig::NAME), None)?) {
             LoadResponse::Data { raw_data, .. } => {
                 trace!("config loaded");
                 let mut cfg: RegistryConfig = serde_json::from_slice(&raw_data)?;
@@ -357,7 +350,7 @@ impl<'cfg> RegistryData for RemoteRegistry<'cfg> {
         self.head.set(None);
         *self.tree.borrow_mut() = None;
         self.current_sha.set(None);
-        let path = self.config.assert_package_cache_locked(&self.index_path);
+        let _path = self.config.assert_package_cache_locked(&self.index_path);
         if !self.quiet {
             self.config
                 .shell()
@@ -377,10 +370,6 @@ impl<'cfg> RegistryData for RemoteRegistry<'cfg> {
         )
         .with_context(|| format!("failed to fetch `{}`", url))?;
 
-        // Create a dummy file to record the mtime for when we updated the
-        // index.
-        paths::create(&path.join(LAST_UPDATED_FILE))?;
-
         Ok(())
     }
 

src/cargo/util/network/mod.rs

@@ -20,20 +20,51 @@ impl<T> PollExt<T> for Poll<T> {
     }
 }
 
-// When dynamically linked against libcurl, we want to ignore some failures
-// when using old versions that don't support certain features.
+/// When dynamically linked against libcurl, we want to ignore some failures
+/// when using old versions that don't support certain features.
 #[macro_export]
 macro_rules! try_old_curl {
     ($e:expr, $msg:expr) => {
         let result = $e;
         if cfg!(target_os = "macos") {
             if let Err(e) = result {
-                warn!("ignoring libcurl {} error: {}", $msg, e);
+                ::log::warn!("ignoring libcurl {} error: {}", $msg, e);
             }
         } else {
+            use ::anyhow::Context;
             result.with_context(|| {
-                anyhow::format_err!("failed to enable {}, is curl not built right?", $msg)
+                ::anyhow::format_err!("failed to enable {}, is curl not built right?", $msg)
             })?;
         }
     };
 }
+
+/// Enable HTTP/2 and pipewait to be used as it'll allow true multiplexing
+/// which makes downloads much faster.
+///
+/// Currently Cargo requests the `http2` feature of the `curl` crate which
+/// means it should always be built in. On OSX, however, we ship cargo still
+/// linked against the system libcurl. Building curl with ALPN support for
+/// HTTP/2 requires newer versions of OSX (the SecureTransport API) than we
+/// want to ship Cargo for. By linking Cargo against the system libcurl then
+/// older curl installations won't use HTTP/2 but newer ones will. All that to
+/// basically say we ignore errors here on OSX, but consider this a fatal error
+/// to not activate HTTP/2 on all other platforms.
+///
+/// `pipewait` is an option which indicates that if there's a bunch of parallel
+/// requests to the same host they all wait until the pipelining status of the
+/// host is known. This means that we won't initiate dozens of connections but
+/// rather only one. Once the main one is opened we realized that pipelining is
+/// possible and multiplexing is possible. All in all this reduces the number
+/// of connections down to a more manageable state.
+#[macro_export]
+macro_rules! try_old_curl_http2_pipewait {
+    ($multiplexing:expr, $handle:expr) => {
+        if $multiplexing {
+            $crate::try_old_curl!($handle.http_version(curl::easy::HttpVersion::V2), "HTTP/2");
+        } else {
+            $handle.http_version(curl::easy::HttpVersion::V11)?;
+        }
+        $crate::try_old_curl!($handle.pipewait(true), "pipewait");
+    };
+}