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fix: cache negative package.json lookups

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This commit is contained in:
losfair 2024-08-14 23:52:19 +08:00
parent 68f03a7ebf
commit 2d770b85f8
1 changed files with 16 additions and 1 deletions
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17
ext/node/package_json.rs
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@ -5,6 +5,7 @@ use deno_config::package_json::PackageJsonRc;
use deno_fs::DenoConfigFsAdapter;
use std::cell::RefCell;
use std::collections::HashMap;
use std::collections::HashSet;
use std::io::ErrorKind;
use std::path::Path;
use std::path::PathBuf;
@ -42,6 +43,15 @@ pub fn load_pkg_json(
fs: &dyn deno_fs::FileSystem,
path: &Path,
) -> Result<Option<PackageJsonRc>, PackageJsonLoadError> {
// XXX: Quick hack to workaround missing negative lookup cache
thread_local! {
static NEGATIVE_CACHE: RefCell<HashSet<PathBuf>> = RefCell::new(HashSet::new());
}
if NEGATIVE_CACHE.with(|cache| cache.borrow().contains(path)) {
return Ok(None);
}
let result = PackageJson::load_from_path(
path,
&DenoConfigFsAdapter::new(fs),
@ -51,7 +61,12 @@ pub fn load_pkg_json(
Ok(pkg_json) => Ok(Some(pkg_json)),
Err(deno_config::package_json::PackageJsonLoadError::Io {
source, ..
}) if source.kind() == ErrorKind::NotFound => Ok(None),
}) if source.kind() == ErrorKind::NotFound => {
NEGATIVE_CACHE.with(|cache| {
cache.borrow_mut().insert(path.to_path_buf());
});
Ok(None)
}
Err(err) => Err(PackageJsonLoadError(err)),
}
}