mirror of
https://github.com/rust-lang/cargo
synced 2024-10-14 03:32:39 +00:00
cfffda9ae5
This allows to use `gitoxide` for all fetch operations, boosting performance for fetching the `crates.io` index by a factor of 2.2x, while being consistent on all platforms. For trying it, nightly builds of `cargo` can specify `-Zgitoxide=fetch`. It's also possible to set the `__CARGO_USE_GITOXIDE_INSTEAD_OF_GIT2=1` environment variable (value matters), which is when `-Zgitoxide=none` can be used to use `git2` instead. Limitations ----------- Note that what follows are current shortcomings that will be addressed in future PRs. - it's likely that authentication around the `ssh` protocol will work differently in practice as it uses the `ssh` program. - clones from `file://` based crates indices will need the `git` binary to serve the locatl repository. - the progress bar shown when fetching doesn't work like the orgiinal, but should already feel 'faster'.
118 lines
3.1 KiB
Rust
118 lines
3.1 KiB
Rust
//! Tests for git garbage collection.
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use std::env;
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use std::ffi::OsStr;
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use std::path::PathBuf;
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use cargo_test_support::git;
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use cargo_test_support::git::cargo_uses_gitoxide;
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use cargo_test_support::paths;
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use cargo_test_support::project;
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use cargo_test_support::registry::Package;
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use url::Url;
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pub fn find_index() -> PathBuf {
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let dir = paths::home().join(".cargo/registry/index");
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dir.read_dir().unwrap().next().unwrap().unwrap().path()
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}
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fn run_test(path_env: Option<&OsStr>) {
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const N: usize = 50;
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let foo = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.0.1"
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authors = []
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[dependencies]
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bar = "*"
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"#,
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)
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.file("src/lib.rs", "")
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.build();
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Package::new("bar", "0.1.0").publish();
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foo.cargo("check").run();
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let index = find_index();
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let path = paths::home().join("tmp");
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let url = Url::from_file_path(&path).unwrap().to_string();
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let repo = git2::Repository::init(&path).unwrap();
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let index = git2::Repository::open(&index).unwrap();
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let mut cfg = repo.config().unwrap();
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cfg.set_str("user.email", "foo@bar.com").unwrap();
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cfg.set_str("user.name", "Foo Bar").unwrap();
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let mut cfg = index.config().unwrap();
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cfg.set_str("user.email", "foo@bar.com").unwrap();
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cfg.set_str("user.name", "Foo Bar").unwrap();
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for _ in 0..N {
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git::commit(&repo);
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index
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.remote_anonymous(&url)
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.unwrap()
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.fetch(&["refs/heads/master:refs/remotes/foo/master"], None, None)
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.unwrap();
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}
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drop((repo, index));
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Package::new("bar", "0.1.1").publish();
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let before = find_index()
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.join(".git/objects/pack")
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.read_dir()
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.unwrap()
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.count();
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assert!(before > N);
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let mut cmd = foo.cargo("update");
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cmd.env("__CARGO_PACKFILE_LIMIT", "10");
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if let Some(path) = path_env {
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cmd.env("PATH", path);
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}
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cmd.env("CARGO_LOG", "trace");
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cmd.run();
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let after = find_index()
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.join(".git/objects/pack")
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.read_dir()
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.unwrap()
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.count();
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assert!(
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after < before,
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"packfiles before: {}\n\
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packfiles after: {}",
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before,
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after
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);
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}
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#[cargo_test(requires_git)]
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fn use_git_gc() {
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run_test(None);
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}
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#[cargo_test]
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fn avoid_using_git() {
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if cargo_uses_gitoxide() {
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// file protocol without git binary is currently not possible - needs built-in upload-pack.
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// See https://github.com/Byron/gitoxide/issues/734 (support for the file protocol) progress updates.
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return;
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}
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let path = env::var_os("PATH").unwrap_or_default();
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let mut paths = env::split_paths(&path).collect::<Vec<_>>();
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let idx = paths
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.iter()
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.position(|p| p.join("git").exists() || p.join("git.exe").exists());
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match idx {
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Some(i) => {
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paths.remove(i);
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}
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None => return,
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}
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run_test(Some(&env::join_paths(&paths).unwrap()));
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}
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