fix: tolerate float created_at in /v1/responses payloads - #6823
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Upstreams following the openai SDK contract (Response.created_at is typed float, e.g. SGLang streaming snapshots) emit created_at as 1786588600.0. The strict int field made all three snapshot events (response.created/in_progress/completed) fail to unmarshal and get dropped, losing usage and degrading billing to local estimation. Add a float branch to IntValue and switch OpenAIResponsesResponse.CreatedAt to IntValue; marshaling still emits an integer. Add regression tests with the captured payload.
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WalkthroughThe change adds floating-point ChangesCreatedAt handling
Estimated code review effort: 2 (Simple) | ~10 minutes Mergeability Score: 🔵 Low · up to The change allows created_at values encoded as floats or strings, but floating-point conversion can silently truncate or mishandle very large or out-of-range timestamps. The PR is mergeable with explicit owner awareness or follow-up for this bounded correctness risk. Possibly related issues
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In `@relaykit/dto/openai_response_created_at_test.go`:
- Around line 7-8: Update the tests’ JSON unmarshaling and marshaling checks to
use testify/require.NoError before accessing their results, preventing
subsequent assertions from running after prerequisite failures. Keep
testify/assert for non-fatal output checks across the affected test cases.
In `@relaykit/dto/values.go`:
- Around line 38-41: Update the float-handling logic in the IntValue JSON
unmarshalling method to parse the numeric token exactly, reject fractional
values that would lose precision, and validate the resulting value against the
platform int bounds before conversion. Preserve the existing successful integer
parsing behavior and add tests covering decimal precision and values at or
beyond int limits.
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📒 Files selected for processing (7)
relay/channel/openai/chat_via_responses.gorelaykit/dto/openai_response.gorelaykit/dto/openai_response_created_at_test.gorelaykit/dto/values.gorelaykit/relayconvert/internal/oai_chat/to_oai_responses_resp.gorelaykit/relayconvert/internal/oai_chat/to_oai_responses_stream_resp.gorelaykit/relayconvert/internal/oai_responses/to_oai_chat_resp.go
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关于 CI 中 "Frontend typecheck and test" 的失败：该失败为 main 分支存量问题，与本 PR 无关。
与本 PR 相关的 Backend vet, build, and test 与 pr-quality 均已通过。 |
- Reject float values outside the int range in IntValue.UnmarshalJSON instead of relying on the implementation-defined conversion result; fractional values are still truncated (legal per the openai SDK float contract for created_at). - Use require for prerequisite (un)marshal assertions in the created_at regression tests and add boundary cases (fractional truncation, exact float64-representable lower bound, overflow rejection). Addresses CodeRabbit review feedback on QuantumNous#6823.
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- Reject float values outside the int range in IntValue.UnmarshalJSON instead of relying on the implementation-defined conversion result; fractional values are still truncated (legal per the openai SDK float contract for created_at). - Use require for prerequisite (un)marshal assertions in the created_at regression tests and add boundary cases (fractional truncation, exact float64-representable lower bound, overflow rejection). Addresses CodeRabbit review feedback on QuantumNous#6823.
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修复
/v1/responses流式转发在上游把created_at序列化为浮点（如1786588600.0）时，response.created/response.in_progress/response.completed三个快照事件反序列化失败被整体丢弃、下游丢失 usage 且计费退化为估算的问题。关联 issue：#6822
根因
dto.OpenAIResponsesResponse.CreatedAt是严格int。openai 官方 SDK 契约中该字段为float（response.pycreated_at: float），SGLang 等上游的流式快照因此会输出x.0形态的合法 JSON 数字（上游侧成因已提报 sgl-project/sglang#34716），encoding/json报UnmarshalTypeError，流处理器丢弃事件。与 rc.21 修tool_choice、以及Status/Instructions等字段改json.RawMessage属同一类问题，created_at是同一模式下的遗漏点。改动
relaykit/dto/values.goIntValue.UnmarshalJSON增加浮点分支（截断取整），int/float/string 三种形态均可解析，MarshalJSON仍输出整数relaykit/dto/openai_response.goOpenAIResponsesResponse.CreatedAt由int改为IntValuerelaykit/relayconvert/internal/oai_chat/to_oai_responses_resp.go、to_oai_responses_stream_resp.go（2 处）、relay/channel/openai/chat_via_responses.goint(...)→dto.IntValue(...)，纯类型适配relaykit/relayconvert/internal/oai_responses/to_oai_chat_resp.gocreated := int(resp.CreatedAt)，避免IntValue进入OpenAITextResponse.Created any影响下游类型断言relaykit/dto/openai_response_created_at_test.go（新增）IntValue三形态与非法输入影响面
created_at整数、浮点、数字字符串均可接收；原来能解析的输入行为不变（纯超集）。IntValue.MarshalJSON输出整数，对外 JSON 形状不变。IntValue现有使用方（doubao 任务适配器）无感。测试
json: cannot unmarshal number 1786588600.0 ... of type int），修复后通过。relaykit模块go vet ./...、go test ./...全部通过；主模块go build通过，go vet ./relay/...、go test ./relay/...通过。🤖 Generated with Claude Code
Summary by CodeRabbit
created_atformats reliably.