fix(npm): respect etag for npm packument caching #29130
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dsherret
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Pull Request Overview
This PR fixes npm packument caching by respecting ETag headers. It computes an ETag for registry JSON files using a SHA256 hash (encoded in Base64) and returns a 304 Not Modified response when the “If-None-Match” header matches the computed ETag.
- Introduced ETag computation and checking in the npm registry server.
- Updated cache structures and HTTP client interfaces in the npm_cache resolvers.
- Renamed and adjusted authentication header helper functions for consistency.
Reviewed Changes
Copilot reviewed 16 out of 19 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| tests/util/server/src/servers/npm_registry.rs | Added ETag computation and response handling based on the “If-None-Match” header. |
| resolvers/npm_cache/tarball.rs | Updated FTP traits and HTTP client call to handle the new ETag logic. |
| resolvers/npm_cache/remote.rs | Renamed and simplified the auth header helper to return a raw string value. |
| resolvers/npm_cache/registry_info.rs | Introduced a new SerializedCachedPackageInfo struct with a _deno.etag property. |
| resolvers/npm_cache/lib.rs | Adjusted HTTP client response types and updated download logic to accommodate ETag. |
| cli/* | Minor adaptations to propagate the updated HTTP client and caching API changes. |
Files not reviewed (3)
- tests/specs/npm/packument_etag/test.jsonc: Language not supported
- tests/specs/npm/packument_etag/install_reload.out: Language not supported
- tests/specs/npm/packument_etag/package.json: Language not supported
bartlomieju
reviewed
May 2, 2025
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| // todo(dsherret): deserialize in a blocking task | ||
| serde_json::from_slice(&file_bytes) |
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Is there a reason you want to do it in a blocking task? If so, should it be done in this PR?
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Because we can parallelize it like we do elsewhere. I want to see and measure its affects in a followup pr.
bartlomieju
approved these changes
May 2, 2025
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Stores the etag in a
_deno.etagproperty on the json object of the packument.#[serde(flatten)]deno_npm#104Closes #24566