feat(server): add pre-adapter request transform hook (#3459) - #3463
feat(server): add pre-adapter request transform hook (#3459)#3463drakonkat wants to merge 9 commits into
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📝 WalkthroughWalkthroughThe change adds global and provider-scoped request transforms. It loads handlers dynamically, applies them once before adapter processing, synchronizes native Responses bodies, validates configuration, handles failures, and adds comprehensive integration coverage. ChangesRequest transform feature
Estimated code review effort: 4 (Complex) | ~60 minutes Sequence Diagram(s)sequenceDiagram
participant handleResponsesInner
participant applyRequestTransforms
participant TransformModule
participant syncTransformedResponsesBody
participant Adapter
handleResponsesInner->>applyRequestTransforms: apply transforms after route normalization
applyRequestTransforms->>TransformModule: load and invoke configured handlers
TransformModule-->>applyRequestTransforms: return mutations or replacement request
applyRequestTransforms->>syncTransformedResponsesBody: synchronize transformed Responses fields
syncTransformedResponsesBody-->>applyRequestTransforms: update native request body
applyRequestTransforms-->>handleResponsesInner: return transformed parsed request
handleResponsesInner->>Adapter: build provider request
Merge Risk: 🟡 Moderate · up to Configured transforms can break continuations, abort requests after malformed in-place mutations, alter later requests through shared configuration, and add substantial latency for long conversations. These issues should be resolved before merge. 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Out of Scope Changes checkExplanation Most changes directly support issue Resolution Remove the unrelated changes in tests/routing/combo-management-api.test.ts, or provide explicit evidence that they are required to support the request-transform feature. Keep the transform-specific tests in tests/usage/request-transforms.test.ts. Full details: Docstring CoverageExplanation Docstring coverage is 72.22% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 18 functions across 13 files. (2 skipped: 2 unsupported.)
✨ Finishing Touches 💡 1🛠️ Fix failing CI checks 💡
🧪 Generate unit tests (beta)
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리뷰 · 우선순위 54 / 80이 PR은 이슈 #3459를 닫기 위해, 지금 구현은 새 패키지 훅 위치도 요구사항과 맞습니다. 현재 라인 메인테이너의 판단이 필요한 지점
너의 추천 이 댓글은 grok-bot이 작성했습니다 |
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Actionable comments posted: 4
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Inline comments:
In `@src/server/auth-cors.ts`:
- Around line 699-700: Update the requestTransforms validation around
nonBlankStringArrayConfigError so invalid entries report a transform-specific
label or generic nonblank-string message instead of “model id”; preserve the
existing provider-prefixed error formatting and validation flow.
- Line 845: Update providerManagementConfigError to remove
canonicalCandidate.requestTransforms before comparing it with providerConfigSeed
via sameCanonicalProviderSeed, while preserving validation of the transform
field afterward; add a regression test covering canonical openai with
provider-scoped requestTransforms.
In `@src/server/responses/core.ts`:
- Around line 3255-3261: Move the applyRequestTransforms call before
toolBridgeMaps is derived, then rebuild tool-bridge aliases and declared-tool
metadata from the transformed parsed.context.tools. Synchronize transformed
provider-agnostic fields such as parsed.context.messages into parsed._rawBody
for native passthrough while preserving provider-specific raw fields. Add
integration coverage for native passthrough message changes and routed tool
changes.
In `@src/transforms/runner.ts`:
- Around line 107-108: Validate dynamically loaded transform results before
assigning them to currentParsed in the transform runner. Accept only values
matching the required OcxParsedRequest shape; for invalid objects such as {} or
[], warn, retain the previous currentParsed value, and continue through the
existing transform-failure handling path. Add a regression test covering a
transform that returns {}.
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📒 Files selected for processing (10)
src/config.tssrc/server/auth-cors.tssrc/server/responses/core.tssrc/transforms/index.tssrc/transforms/runner.tssrc/transforms/types.tssrc/types/config.tssrc/types/provider.tssrc/types/request.tstests/request-transforms.test.ts
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🤖 Prompt for all review comments with AI agents
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only still-valid issues, skip the rest with a brief reason, keep changes
minimal, and validate.
Inline comments:
In `@src/config.ts`:
- Around line 587-589: Update both load-time requestTransforms schemas to use
trimmed non-empty strings, including the schemas near the existing
requestTransforms definitions, so whitespace-only entries are rejected
consistently with the management API. Add coverage for [" "] at both global
and provider scopes.
In `@src/server/responses/core.ts`:
- Line 3609: After applyRequestTransforms returns in the request-processing
flow, rebind the existing turn-termination scope to the transformed parsed
request before downstream lookups occur. Use the established
bindTurnTerminationScope mechanism and preserve the scope value originally bound
before transformation, ensuring replacement requests remain associated with Kiro
final-answer and trailing-answer tracking.
In `@src/transforms/responses-body.ts`:
- Line 80: The fallback matching loop in the response transformation repeatedly
parses and serializes synthetic requests for the same rows prefixes. Update the
projection logic around parseRequest and the matcher to memoize each exact
rows-unit projection or compute it lazily only for probed prefix lengths,
preserving existing matching behavior while avoiding duplicate work. Add a
focused test or benchmark covering a large continuation body.
In `@src/transforms/runner.ts`:
- Around line 66-68: Restrict the requestTransforms values consumed by the
dynamic import in the transform runner to a local-only trusted capability or an
explicit allowlist of approved directories/packages. Ensure provider POST,
PATCH, and PUT management routes cannot persist this field for general
admin-token requests, and do not treat the admin token as sufficient filesystem
or module-execution authorization.
- Line 144: Update the merge in the transform runner around currentParsed so an
omitted result.previousResponseId preserves the existing continuation ID, while
an explicitly provided value—including an explicit clear—overrides it; use an
own-property check and extend the request-transform test coverage for the
minimal replacement.
- Line 151: Update the RequestTransformFn loop in the transform runner to
snapshot the last valid currentParsed before each transform, validate
currentParsed after every transform including void returns, and restore the
snapshot when validation fails. Keep synchronization failures from
syncTransformedResponsesBody inside the same warning-and-continue boundary so
applyRequestTransforms continues processing.
In `@src/transforms/types.ts`:
- Around line 9-11: Update the transform context type around providerConfig and
config to expose a deep-readonly projection, and ensure the runtime context
passed by the transform runner prevents nested mutation of both configuration
objects. Preserve request mutability while preventing handlers from changing
config.providers or provider fields across requests.
In `@tests/usage/request-transforms.test.ts`:
- Line 119: Update the replacement test around the request construction and
existing _previousResponseInputExpanded assertion: set a previous_response_id on
the request and assert the corresponding previousResponseId survives the
complete replacement. Keep the test focused on preserving both proxy-owned
fields.
- Line 204: Update the request-transform test around the transform output to use
a model with a known vision verdict and assert the complete rendered message,
including the exact acceptsImageInput value. Ensure the assertion exercises
isVisionEligibleModel through the transform runner rather than checking only the
transform marker.
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📒 Files selected for processing (14)
docs-site/src/content/docs/reference/configuration.mdsrc/config.tssrc/server/auth-cors.tssrc/server/responses/core.tssrc/transforms/index.tssrc/transforms/responses-body.tssrc/transforms/runner.tssrc/transforms/types.tssrc/types/config.tssrc/types/provider.tssrc/types/request.tsstructure/02_config-and-codex-home.mdtests/routing/combo-management-api.test.tstests/usage/request-transforms.test.ts
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@lidge-jun @Ingwannu Updated to The loading boundary is narrower now: handler lists are local-file-only, not management-writable. Hooks use isolated request candidates and read-only configuration snapshots. Please review this boundary and apply Verification is recorded in the description, including failures. Linux and macOS (including the unsharded control) passed on the exact-head fork run; one Windows storage test timed out. Typecheck, builds, documentation and privacy passed locally, but the WSL full-suite attempts encountered Bun native crashes, so the local-CI and ready-for-review boxes remain unchecked. No request to bypass those gates or merge prematurely. |
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Summary
Closes #3459.
requestTransformsafter final routing/normalization and before input admission and adapter dispatch. Handlers receive the canonical request, settled route, and vision eligibility; model-specific behavior branches inside the handler.devat12c248f52without textual conflicts. Current head:97cf9f9613acc020ecc9efb5319b31fcef594062.Maintainer security review requested
Handler lists are now local-file configuration only. Provider POST/PATCH and raw-editor PUT cannot add or change them; public/editor DTOs omit them. Unrelated edits preserve the exact provider's locally configured list; copied providers do not inherit it. Existing privileged local disk reload remains supported.
Trusted local files and installed package specifiers are supported, with no dependency-installation step. Hooks execute with the proxy's permissions; this is not a sandbox. Imports are cached. Failed handlers discard their canonical request/native-body changes and processing continues from the last valid request. Logs do not print thrown handler errors or their payloads.
Explicit maintainer security review and
maintainer-sponsoredare still required. The author has not applied sponsorship or self-approved the PR. Please review the updated local configuration/loading boundary and approve contributor workflows as appropriate.Verification
bun run typecheck: passed.release-version-lineandcodex-reset-credit-auto-redeem): 22 passed, 0 failed after integratingdev; the journal-clock issue is fixed upstream in fix(codex): serialize auto-redeem journal reservation and settlement #3970.routing-policy-surface-parity.test.ts. Trying the same sharding used in Linux CI also hit a Bun SIGSEGV insubagent-model-fallback-api.test.tsand a log-guard maintenance timeout. No assertions or tests were removed to hide these failures; local-CI/readiness boxes remain unchecked.unsponsored_surface.Checklist
Review readiness checklist
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