valkey: add ERR_REDIS_SERVER_ERROR for server error replies - #39573
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WalkthroughChangesThe Valkey RESP parser now represents null arrays as Valkey RESP handling
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Automated review ran and found no bugs. This PR explicitly flags a breaking change that needs a maintainer decision (err.code for server error replies changes from ERR_REDIS_INVALID_RESPONSE to ERR_REDIS_SERVER_ERROR, with commits 3-4 offered as droppable), and it changes several other user-visible behaviors (big number → string, *-1 → null, ! rejects instead of resolving). A human sign-off on the API surface is warranted.
What was reviewed:
- RESP parser/scanner changes for
*-1,_,!, andRESPValue::BlobErrordeletion — greppedsrc/for remainingBlobErrorvariant matches; none. ErrorCode.ts— new code appended at tail so generated discriminants don't shift; existingERR_REDIS_INVALID_RESPONSEtest assertions inreliability/are for genuine parse failures (nesting depth, bad type byte) and still hold.native_test_shims.rs—#[cfg(test)]-gated only; follows thesrc/parsers/native_test_shims.rsprecedent.
Extended reasoning...
Overview
The PR fixes four RESP decoding bugs in the Valkey client (*-1 → null, _junk rejected, big number kept as string, ! blob error unified with - simple error) and introduces a new ERR_REDIS_SERVER_ERROR code to distinguish server error replies from client-side parse failures. It touches the protocol parser (src/valkey/valkey_protocol.rs), the JS conversion layer (src/runtime/valkey_jsc/protocol_jsc.rs), one line in valkey.rs, adds an ErrorCode.ts entry, docs, a Miri crate entry, a #[cfg(test)] shim, and substantial JS + Rust test coverage.
Security risks
None identified. The only input-validation change tightens behavior (_junk now fails). Big-number handling no longer casts through i64→f64, removing a silent precision loss. No new allocation paths driven by untrusted lengths.
Level of scrutiny
High. This is user-facing API surface for a runtime feature: return-type changes (*-1 was [], now null; big number was number, now string), promise resolve→reject semantics for !, and a new error code. The author explicitly writes "Breaking, needs a decision" and structures the PR so commits 3-4 (the new error code) can be dropped independently. That is a maintainer call, not something an automated review should approve unilaterally. Per the repo's landing-prs guidance, adding or changing user-facing API surface calls for the API-design section review.
Other factors
The implementation itself looks correct and thoroughly tested — Rust unit tests with prefix-is-partial checks for both parser and scanner, JS integration tests via a mock server covering each shape (top-level, nested-in-array/EXEC, HELLO handshake, subscriber mode, torn reads, getBuffer), and Miri coverage. I confirmed no stray RESPValue::BlobError matches remain in src/, and that the two other test files asserting ERR_REDIS_INVALID_RESPONSE/_TYPE do so for genuine parse failures unaffected by this change. The deferral is about the API decision, not code quality.
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Updated 2:18 AM PT - Aug 19th, 2026
✅ @robobun, your commit 4cde89ad8377c021d489def26e24245fffcd745f passed in 🧪 To try this PR locally: bunx bun-pr 39573That installs a local version of the PR into your bun-39573 --bun |
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Actionable comments posted: 3
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Inline comments:
In `@docs/runtime/redis.mdx`:
- Around line 343-345: Update the Redis response documentation near the
big-number bullet to state that RESP3 big numbers return JavaScript strings
normally and Buffer values when retrieved through getBuffer, preserving the
existing no-digit-loss guidance.
Apply the same fix in `@src/runtime/valkey_jsc/protocol_jsc.rs` around lines 153 -
154: The inline comment has the same unconditional string claim and should be
updated with the documentation.
In `@src/valkey/valkey_protocol.rs`:
- Around line 403-404: Update the array-length handling in the RESP parser to
accept only -1 as a null array and return RedisError::InvalidArray for other
negative lengths; mirror this validation in ReplyScanner::scan_one. Add parser
and scanner coverage for the malformed *-2\r\n input.
In `@test/js/valkey/valkey-incremental-scan.test.ts`:
- Around line 37-53: Harden the RESP frame parsing loop around argc and len so
numeric fields use strict decimal validation, reject malformed or negative
values, and verify the payload terminator after each declared field before
adding it to fields. Ensure incomplete or malformed frames keep complete false
and never reach onCommand, while preserving dispatch for fully valid commands.
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📒 Files selected for processing (9)
docs/runtime/redis.mdxscripts/rust-miri.tssrc/jsc/bindings/ErrorCode.tssrc/runtime/valkey_jsc/protocol_jsc.rssrc/runtime/valkey_jsc/valkey.rssrc/valkey/lib.rssrc/valkey/native_test_shims.rssrc/valkey/valkey_protocol.rstest/js/valkey/valkey-incremental-scan.test.ts
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robobun
changed the title
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I reviewed this PR and the automated bug hunt found no issues. Because the author explicitly flags a breaking err.code change (ERR_REDIS_INVALID_RESPONSE → ERR_REDIS_SERVER_ERROR) as needing a maintainer decision — and commits 3/4 are structured to be droppable if that decision goes the other way — a human should sign off on the API surface before this lands.
What was reviewed:
- RESP parser/scanner changes (
*-1→Null,_bare-CRLF check,BlobError→Errorunification) and their exhaustive-match coverage — no remainingRESPValue::BlobErrorsites. ErrorCode.tsappend-at-tail placement so generated discriminants don't shift;valkey_error_to_jsmatch stays exhaustive with the newServerErrorarm.- Existing test assertions on
ERR_REDIS_INVALID_RESPONSEintest/js/valkey/— the remaining ones cover genuine parse failures (nesting depth,_junk), not server errors, so they hold. - The
native_test_shims.rs#[cfg(test)]gating and thesrc/parsers/native_test_shims.rsprecedent.
Extended reasoning...
Overview
This PR fixes four RESP decoding correctness issues in the Valkey client (*-1 null array, _ trailing-bytes acceptance, BigNumber precision loss above 2^53, and ! blob-error resolve-vs-reject asymmetry) and introduces a new ERR_REDIS_SERVER_ERROR code to distinguish server error replies from client-side parse failures. It touches the pure-Rust protocol crate, the JSC conversion layer, one line in the connection state machine, ErrorCode.ts, docs, the Miri crate list, and adds both #[test] byte-vector cases and mock-server integration tests.
Security risks
None identified. The changes tighten input validation (_junk now fails instead of silently decoding as null) and don't touch auth, TLS, or credential handling. The new WTF__parseDouble shim is #[cfg(test)]-gated in lib.rs and never compiled into the shipped binary.
Level of scrutiny
Medium-high. The protocol changes themselves are small, well-tested (unit + Miri + mock-server integration), and the PR description documents fails-on-main verification. However, this PR carries four separate user-visible behavior changes the author enumerates: err.code for server errors changes, ! now rejects instead of resolving, BigNumber < 2^63 is now a string instead of a number, and *-1 is now null instead of []. Each is arguably a bugfix, but together they are an observable API shift, and the author explicitly writes "Breaking, needs a decision" and structured the commits so 3+4 can be dropped. That is a maintainer call, not something an automated approval should preempt.
Other factors
- The PR is adopted from #39544 at another maintainer's request; the commit-split design invites a human to choose which subset lands.
- Bot comments on the thread (comment-cop on doc-comment length, CodeRabbit's
*-2strictness suggestion, and its mock-serverparseIntnote) are minor/pre-existing/test-harness scoped and not blockers, but the author may want to respond. - Test coverage is thorough: torn-read cases for
!were updated to assert rejection, both HELLO error shapes are exercised through queued-command rejection (avoiding the #39542 masking the description mentions), and the subscriber-modeServerErrorpath has a dedicated test.
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Pushed 5d26717, carried over from #39576 at @alii's request there. The docs bullet for ERR_REDIS_SERVER_ERROR now says that in subscriber mode the error reply also closes the connection. The comment in the subscriber-mode test now says why the code is read from the second PING: the command that drew the -ERR never settles (#39542 covers that hang). No src change. test/js/valkey/valkey-incremental-scan.test.ts: 25 pass on a debug build of this branch. |
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I reviewed this PR and didn't find any bugs. The change is mechanically small and consistent — the new RedisError::ServerError variant is wired through the exhaustive match in valkey_error_to_js, both RESPValue::Error conversion sites agree, and ERR_REDIS_SERVER_ERROR is appended at the tail of ErrorCode.ts so existing discriminants don't move. Because it's a deliberate breaking change to the public err.code for the most common server-error path (and is stacked on #39544), a human sign-off on shipping the break would still be worthwhile.
What was reviewed:
- Verified remaining
RedisError::InvalidResponsesites invalkey.rsare all genuine parse/protocol failures, not server error replies. - Checked no other test in the suite asserts
ERR_REDIS_INVALID_RESPONSEfor a server error reply — the two remaining hits (_junk, nesting-depth) are real parse errors. - Traced the new subscriber-mode test: the second PING is rejected via
fail() → reject_all_pending_commands, so it doesn't depend on #39542 being fixed.
Extended reasoning...
Overview
This PR adds ERR_REDIS_SERVER_ERROR to distinguish server error replies (-ERR, ! blob errors) from client-side parse failures, which previously both surfaced as ERR_REDIS_INVALID_RESPONSE. It touches: ErrorCode.ts (one appended entry), valkey_protocol.rs (new RedisError::ServerError variant), protocol_jsc.rs (new match arm + RESPValue::Error conversion now passes ServerError), valkey.rs (subscriber-mode error arm now passes ServerError), one docs line, and test updates plus a new subscriber-mode test. The test file also refactors createReplyServer to extract a reusable createCommandServer helper — a pure behavior-preserving refactor (same parse loop, dispatch moved to a callback).
Security risks
None. No untrusted-input parsing changes; the RESP decoder itself is unchanged in this diff (that's #39544). This only relabels which ERR_* code an already-parsed RESPValue::Error maps to.
Level of scrutiny
The mechanical change is low-risk: the Rust enum match is compiler-enforced exhaustive, and the ErrorCode.ts entry is appended at the tail per the codegen ordering rule. However, this is a breaking user-facing API change — err.code for every server rejection (WRONGTYPE, NOAUTH, NOPERM, etc.) changes. The PR description explicitly flags it as breaking and names three public repos that compare against the old code. It's also stacked on #39544, which must land first. Per the approval guidelines, a change to user-facing API surface — especially a breaking one — warrants a human maintainer confirming the break is intended for this release, even though a maintainer (alii) authored the original commit.
Other factors
- Verified the remaining
RedisError::InvalidResponseuses invalkey.rs(parser-consumed-0-bytes, partial-message stack path, unexpected SELECT reply) are all genuine client-side protocol failures, so the split is semantically clean. - Grepped tests for
ERR_REDIS_INVALID_RESPONSE: the only remaining assertions (_junkin this file,resp-nesting-depth.test.ts) are real parse errors and correctly keep the old code. Nothing else in the suite will break. - The new subscriber-mode test correctly observes the code on the second in-flight PING (rejected by
fail() → reject_all_pending_commands), and the first PING's.catch(() => {})avoids the known #39542 hang without depending on its fix. - The HELLO and SELECT error arms intentionally keep their more-specific codes (
AuthenticationFailed,InvalidCommand), which is the right layering. - All prior bot review comments (comment-cop, CodeRabbit) are resolved and were about lines that belong to the base PR #39544, not this diff.
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I reviewed this PR and didn't find any bugs. Because it's a documented breaking change to a user-visible error code (err.code for server error replies moves from ERR_REDIS_INVALID_RESPONSE to ERR_REDIS_SERVER_ERROR) and is stacked on #39544, a human sign-off on the API decision would still be worthwhile.
What was reviewed:
RedisError::ServerErroris added and mapped in the exhaustive match invalkey_error_to_js; bothRESPValue::Errorsites (protocol_jsc.rsand the subscriber arm invalkey.rs) now agree.ERR_REDIS_SERVER_ERRORis appended at the tail ofErrorCode.ts, so existing generated discriminants don't shift.- Checked other test files asserting
ERR_REDIS_INVALID_RESPONSE—resp-nesting-depth.test.tsasserts it forNestingDepthExceeded(unchanged), andconnection-failures.test.tsusesERR_REDIS_INVALID_RESPONSE_TYPE(a different code); neither breaks. - The new subscriber-mode test's use of a second in-flight PING to observe the error code was traced through
fail()→reject_all_pending_commands.
Extended reasoning...
Overview
This PR adds a new ERR_REDIS_SERVER_ERROR code so callers can distinguish a server error reply (-WRONGTYPE ..., ! blob error) from a client-side parse failure. It touches six files: appends the new code to ErrorCode.ts, adds RedisError::ServerError to the enum in valkey_protocol.rs, maps it in protocol_jsc.rs, switches the RESPValue::Error conversion and the subscriber-mode fail() arm to the new variant, updates existing tests to assert the new code, adds a subscriber-mode test, and adds a docs bullet. It is stacked on #39544 (the decoder fix), so the diff here is only the error-code split.
Security risks
None. No untrusted-input parsing changes; the only behavioral change is which .code string is attached to an error object that was already being built. The new enum variant is covered by the exhaustive match in valkey_error_to_js (Rust would refuse to compile otherwise).
Level of scrutiny
The implementation is small and mechanically correct. However, this is a breaking change to a documented user-facing error code — the PR description itself lists three public repos that compare against the old code. Per the repo's guidance, changes to user-facing API surface warrant maintainer sign-off. The core commit was authored by alii and split out at their request, which suggests maintainer buy-in exists, but the final call on shipping a breaking err.code change (vs. e.g. a deprecation path) should be a human's.
Other factors
- Test coverage is good: top-level
-and!, nested-in-array (theEXECshape), the subscriber-mode arm, and the torn-blob-error tests all assert the new code. The PR verified 9 failures on the base branch and 25 passes on this branch. - I grepped for other tests asserting the old code on server errors and found none; the two other files matching
ERR_REDIS_INVALID_RESPONSEassert it for genuinely invalid responses (nesting depth, bad type byte), which remain correct. - The test refactor extracts
createCommandServerfromcreateReplyServerto reuse the RESP frame parser for the subscriber test; behavior of the existing helper is preserved. - All prior CodeRabbit and comment-cop threads are resolved and pertain to lines that belong to the base PR (#39544), not to this diff.
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LGTM — small, well-scoped error-code split with thorough test coverage.
What was reviewed:
- Verified
ErrorCode.tsappends at the tail (discriminants unchanged) and the newRedisError::ServerErrorarm is covered by the exhaustive match invalkey_error_to_js. - Checked every
RESPValue::Errormatch site: the two changed sites now useServerError; the HELLO (AuthenticationFailed) and SELECT (InvalidCommand) arms are intentionally left with their own codes; thehandle_subscribe_responseand regular-command arms route throughresp_value_to_jsand pick up the change. - Grepped the test suite for
ERR_REDIS_INVALID_RESPONSE— remaining uses are genuine protocol errors (_junk, nesting depth), no stale assertions on the old code for server errors. - The
createCommandServerextraction is a behavior-preserving refactor of the existingcreateReplyServerhandler body.
Extended reasoning...
Overview
This PR adds ERR_REDIS_SERVER_ERROR as a distinct error code for RESP -/! server error replies, so callers can tell a server-side error apart from a client-side parse failure (both previously surfaced as ERR_REDIS_INVALID_RESPONSE). It touches: ErrorCode.ts (+1 entry at tail), valkey_protocol.rs (+1 enum variant), protocol_jsc.rs (map the variant, use it for RESPValue::Error), valkey.rs (subscriber-mode arm), docs, and the incremental-scan test file (helper refactor + updated/added assertions). The PR is stacked on #39544 and carries alii's original commit for the core change.
Security risks
None. No parsing, allocation, or trust-boundary changes; this only relabels the error code attached to an already-constructed RESPValue::Error. The new enum variant is appended, and Rust's exhaustive-match check guarantees no site was missed in valkey_error_to_js.
Level of scrutiny
Low-to-medium. The src change is ~13 lines of enum-variant plumbing plus two one-line call-site edits. The test-file change is larger by line count but is mostly a mechanical extract-helper refactor (createCommandServer pulled out of createReplyServer) plus assertion updates and one new subscriber-mode test. It is a user-facing breaking change (err.code value), but the PR description acknowledges this, lists affected public repos, and the design originated from a maintainer (alii) — the API decision is already made.
Other factors
- Test coverage is thorough: top-level
-and!, nested-in-array (EXEC shape), torn-across-reads, and subscriber-mode paths all assert the new code; the_junkprotocol-error test still assertsERR_REDIS_INVALID_RESPONSE, proving the split is real. - The mechgate evidence shows 9 tests fail on the base branch's src and all 25 pass with the fix, and
cargo test -p bun_valkeypasses. - All prior bot comments (comment-cop, CodeRabbit) are resolved; the ones on
native_test_shims.rs/valkey_protocol.rscomments and the*-2validation belong to the base PR #39544, not this diff. - Grepped for stale
ERR_REDIS_INVALID_RESPONSEassertions elsewhere intest/— the two remaining hits (resp-nesting-depth.test.ts, and this file's_junktest) are genuine parse-error cases, so nothing was left broken.
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I reviewed this PR and didn't find any bugs. Since it deliberately changes the user-visible err.code for server error replies (a documented breaking change with named downstream repos) and is stacked on #39544, a human sign-off on the API break would still be worthwhile.
What was reviewed:
- Verified every
RESPValue::Errorconsumer: the two changed sites now useServerError; the HELLO (AuthenticationFailed) and SELECT (InvalidCommand) arms and theresp_value_to_jscallers at valkey.rs:919/1218 are intentionally distinct or already route through the new code. - Confirmed
ERR_REDIS_SERVER_ERRORis appended at the tail ofErrorCode.tsso existing generated discriminants don't shift, and the newRedisError::ServerErrorvariant is covered in thevalkey_error_to_jsmatch. - Checked the test refactor:
createReplyServerbehavior is preserved after extractingcreateCommandServer; the new subscriber-mode test exercises the changedvalkey.rs:1164arm.
Extended reasoning...
Overview
This PR adds a new error code ERR_REDIS_SERVER_ERROR so that Redis/Valkey server error replies (-ERR ..., !...) can be distinguished from client-side parse failures, which previously shared ERR_REDIS_INVALID_RESPONSE. It touches: ErrorCode.ts (append one entry), valkey_protocol.rs (add enum variant with doc comment), protocol_jsc.rs (map the variant and use it for RESPValue::Error), valkey.rs (use it in the subscriber-mode fail path), docs/runtime/redis.mdx (list the new code), and the test file (extract a createCommandServer helper, update expected codes, add a subscriber-mode test). It is stacked on #39544.
Security risks
None. No untrusted input handling, auth, or crypto is changed. The RESP parser itself is untouched in this diff — only which error-code tag is attached to an already-parsed RESPValue::Error.
Level of scrutiny
The mechanical change is small and low-risk: an enum variant, an exhaustive match arm, and two call-site tag swaps. The Rust compiler enforces the match is complete. The test refactor is a clean extraction with the original body moved into a callback verbatim. However, the change is a deliberate breaking change to the public err.code contract: user code that branches on ERR_REDIS_INVALID_RESPONSE for server errors will stop matching. The PR author explicitly names three public repos that do this. That is a product/API decision a maintainer should ratify, not something to auto-approve.
Other factors
- All prior review threads (CodeRabbit, comment-cop) are resolved; the flagged lines belong to the base PR #39544, not this diff.
- I checked every other
RESPValue::Errormatch site invalkey.rs: the HELLO handler intentionally keepsAuthenticationFailed, the SELECT handler keepsInvalidCommand, and the two remaining sites (handle_subscribe_response at :919 and the regular-command reject at :1218) route throughresp_value_to_js, which now producesServerError. No sibling site was missed. - The PR is stacked and must land after #39544; merge order is a human coordination step.
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I reviewed this PR and didn't find any bugs. Because it's a deliberate breaking change to the user-visible err.code for server error replies (and adds a new public error code), a human sign-off on the API decision would be worthwhile before merging.
What was reviewed:
- Verified the new
RedisError::ServerErrorvariant is mapped invalkey_error_to_jsand thatERR_REDIS_SERVER_ERRORis appended at the tail ofErrorCode.tsso generated discriminants don't shift. - Checked every
RESPValue::Errormatch site invalkey_jsc/: the two generic sites now useServerError; the HELLO (AuthenticationFailed) and SELECT (InvalidCommand) arms keep their more specific codes. - Traced the
createReplyServer→createCommandServerrefactor — behavior is preserved; the new subscriber-mode test correctly reads the code from the second in-flight PING (the first is popped beforefail()runs, matching the #32858 note).
Extended reasoning...
Overview
This PR is stacked on #39544 and introduces ERR_REDIS_SERVER_ERROR so callers can distinguish a server-side error reply (-ERR ..., !...) from a client-side parse failure. It touches: the RedisError enum (new ServerError variant), the RESP→JS conversion in protocol_jsc.rs, the subscriber error arm in valkey.rs, the ErrorCode.ts codegen input, docs, redis.d.ts JSDoc, and the incremental-scan test file (refactor + new subscriber test + updated assertions).
Security risks
None. No untrusted input parsing changes; this only relabels which error code an already-constructed RESPValue::Error maps to. The test-file refactor moves existing mock-server code into a reusable helper without changing its parsing.
Level of scrutiny
The code change is small and mechanical, and the bug-hunting system found nothing. However, the PR is explicitly labeled breaking — err.code for server error replies changes from ERR_REDIS_INVALID_RESPONSE to ERR_REDIS_SERVER_ERROR, and the description names three public repos that compare against the old code. Adding a new public error code is user-facing API surface. Per the repo's review guidance on API design, that's a maintainer call rather than something to auto-approve.
Other factors
- I confirmed all
RESPValue::Errorsites invalkey_jsc/are consistent after this change:resp_value_to_js_with_optionsand the subscriberfail()now useServerError; the HELLO and SELECT handlers intentionally keepAuthenticationFailed/InvalidCommand. ErrorCode.tsaddition is at the tail with the same[code, Error, "RedisError"]shape as the otherERR_REDIS_*entries, so generated indices are stable.- The test refactor (
createCommandServerextracted fromcreateReplyServer) is behavior-preserving; the new subscriber test's design (reading the code from the second PING because the first is popped beforefail()and left unsettled) matches the currenthandle_responsecontrol flow and the referenced #32858. - All CodeRabbit and comment-cop threads on this PR were resolved as belonging to the base PR #39544 or as out of scope; nothing outstanding.
- This PR must land after #39544 (its base branch).
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@robobun rebase and fix conflicts |
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Rebased onto main at 24c0063 (the #39544 merge). The branch holds the three error code commits plus 4cde89a, head 4cde89a. The rebase did not change the diff. 4cde89a restores the docs wording from #39576 (a subscriber-mode error reply also closes the connection). That line was lost before the rebase, when the branch was rebuilt on the reduced #39544. |
…r reply A subscriber fails the connection when the server sends an error reply. That path still passed RedisError::InvalidResponse, so the commands it rejected carried ERR_REDIS_INVALID_RESPONSE. That code now means the client could not parse a reply. The path passes RedisError::ServerError. The mock server's frame parser moves into createCommandServer so a test can script its own replies. The nested element test now checks the code as well as the message. A new test checks that an error reply in subscriber mode rejects the command still in flight with ERR_REDIS_SERVER_ERROR and the server text.
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LGTM — 4cde89a restores the subscriber-mode note in the docs bullet, addressing the earlier nit.
What was reviewed:
- Traced every
RESPValue::Errormatch arm: user-command paths (protocol_jsc.rs:95,valkey.rs:1164,valkey.rs:1218viaresp_value_to_js) now useServerError; handshake paths (HELLO →AuthenticationFailed, SELECT →InvalidCommand) intentionally keep their own codes and remain covered by the existing HELLO test. ERR_REDIS_SERVER_ERRORis appended at the tail ofErrorCode.ts, so no existing discriminant shifts.- The
createReplyServer→createCommandServerextraction preserves the prior per-command dispatch verbatim.
Extended reasoning...
Overview
Adds a new RedisError::ServerError variant and ERR_REDIS_SERVER_ERROR code so callers can distinguish a server error reply (-WRONGTYPE …, !…) from a reply the client failed to parse (_junk, nesting depth, line too long). Touches: one enum variant in valkey_protocol.rs, one table entry in ErrorCode.ts, one match arm in protocol_jsc.rs, one fail() call in valkey.rs, plus docs, .d.ts JSDoc, and test updates. The test file also extracts the RESP command-frame parser into createCommandServer so the new subscriber-mode test can reuse it.
Security risks
None. No parsing, allocation, or trust-boundary logic changes — this only swaps which ERR_* string constant is attached to an already-constructed JS error. The new enum variant is data-only.
Level of scrutiny
Low-to-medium. Mechanically this is a two-line variant swap plus a table append. The one non-mechanical aspect is that it is a documented breaking change to a public err.code value; the PR body names three affected public repos. A maintainer (alii) originated the base commit, requested the rebase, and requested the docs carry-over from #39576, so the design decision has maintainer buy-in.
Other factors
- 11 tests fail on main and pass here (verified in the PR's gate output on both ASAN debug and release).
- I checked for sibling
RESPValue::Errorsites per the fix-the-whole-class rule: the HELLO (AuthenticationFailed) and internal SELECT (InvalidCommand) arms are handshake-specific and correctly retain their own codes; the HELLO path has its own test assertingERR_REDIS_AUTHENTICATION_FAILED. - The
ErrorCode.tsentry is appended at the end of the array, so no generated discriminant moves. - My prior review flagged that the rebase dropped the subscriber-mode wording from the docs bullet; commit 4cde89a restored it.
- All CodeRabbit and comment-cop threads are resolved (they targeted #39544 code that is now the base, not this diff).
2 participants
Problem
-WRONGTYPE ...or a!blob error) rejects witherr.code === "ERR_REDIS_INVALID_RESPONSE".src/runtime/valkey_jsc/protocol_jsc.rs:94passesRedisError::InvalidResponseforRESPValue::Error._junk, nesting depth). A caller cannot tell them apart.src/runtime/valkey_jsc/valkey.rs:1164passesInvalidResponsetoo.Fix
ERR_REDIS_SERVER_ERRORgoes at the tail ofErrorCode.ts, so no discriminant moves. The newRedisError::ServerErrormaps to it.RESPValue::Errorsites now passServerError: the top-level rejection, an Error element nested in an array (theEXECshape), and the subscriber arm. The message text is unchanged.err.codefor a server error reply changes. Three public repos compare against the old code (see Notes). The docs and thesend()JSDoc name the new code.test/js/valkey/valkey-incremental-scan.test.ts, 41 pass here, 11 fail with thesrc/of main. Alsoreliability/resp-nesting-depth.test.tsand a real redis 8.0.2.Background
-reply is a simple error, a!reply is a blob error. Since valkey: fix null array, null CRLF, big number and blob error replies #39544 both parse toRESPValue::Error.resp_value_to_js_with_options(protocol_jsc.rs) turns a reply into a JS value. ForRESPValue::Errorit callsvalkey_error_to_js, which maps aRedisErrorvariant to anERR_*code.SUBSCRIBE. On an error replyhandle_response(valkey.rs) callsfail.failrejects every pending command with the given variant and closes the connection.ERR_*tables fromErrorCode.tsin file order.Notes
src/change: the-ERRand!frames in both send modes, the two nested element tests, the subscriber-mode test, and the four torn blob error tests. They all assert the new code. The subscriber-mode test also fails with only thevalkey.rsline removed.ERR_REDIS_INVALID_RESPONSEfor a server error: HazelChat/hazel, stella/stella, petarzarkov/dunx.LPUSHon a string key rejects withERR_REDIS_SERVER_ERRORand the unchangedWRONGTYPEmessage. An error inside anEXECreply resolves as an Error element with the same code.ERR_REDIS_INVALID_RESPONSEis still used for a reply the client could not parse (_junk, nesting depth, line too long, a bad type byte). Those paths are not changed.docs/runtime/redis.mdxsays that the reply rejects one command or, in subscriber mode, closes the connection. valkey: add ERR_REDIS_SERVER_ERROR for server error replies #39576 asked for the subscriber part. It was lost when the branch was rebuilt on the reduced valkey: fix null array, null CRLF, big number and blob error replies #39544, and commit 4 restores it.packages/bun-types/redis.d.tsnames the code in thesend()JSDoc.[review] gate passed · iteration 0 · 7 files touched
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