fix: 轮询等待 Replicate prediction 完成 - #6886
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Organization UI Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (3)
Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review. WalkthroughThe Replicate adaptor now supports bounded polling for asynchronous predictions. It handles cancellation, backoff, transient failures, response limits, terminal errors, and multiple output formats. Image response handling accepts Replicate 201 and 202 responses. ChangesReplicate polling
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to The PR adds Replicate prediction polling and preserves existing handling for other channels; no actionable merge-blocking risk remains after normal checks and review. Sequence Diagram(s)sequenceDiagram
participant DoResponse
participant waitForPrediction
participant ReplicateAPI
participant ImageHandler
DoResponse->>waitForPrediction: wait for pending prediction
waitForPrediction->>ReplicateAPI: authenticated status request
ReplicateAPI-->>waitForPrediction: prediction status and output
waitForPrediction-->>DoResponse: terminal prediction or error
DoResponse->>ImageHandler: return image response
ImageHandler->>ImageHandler: normalize Replicate 201 or 202 to 200
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🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@relay/channel/replicate/adaptor_polling_test.go`:
- Line 37: Replace each context-less test request with
httptest.NewRequestWithContext using an explicit context:
relay/channel/replicate/adaptor_polling_test.go lines 37, 76, 105, and 150.
Preserve the existing HTTP methods, URLs, and request bodies.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: Organization UI
Review profile: CHILL
Plan: Pro Plus
Run ID: 1eb107e0-e482-4cc4-9517-21896036f186
📒 Files selected for processing (3)
relay/channel/replicate/adaptor.gorelay/channel/replicate/adaptor_polling_test.gorelay/channel/replicate/dto.go
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Important
📝 变更描述 / Description
Replicate 的同步 prediction 最多等待一段时间；任务未完成时，上游会返回
202 Accepted，并在响应体中保留 prediction ID 与starting/processing状态。旧链路存在两个连续缺口：
ImageHelper仍会先把 Replicate 的202当作渠道错误，导致响应无法进入 adaptor。本 PR 一并修复这两个环节：
starting/processing时，通过当前渠道的 base URL 和 prediction ID 查询/v1/predictions/{id}，直到进入终态。201 Created与202 Accepted在图片 relay 边界被识别为合法异步响应并规范化为200，再交给 adaptor 处理；其他渠道的非200响应仍沿用原错误处理。该变更与 #6701 范围独立：#6701 处理 Replicate 原生图片参数；本 PR 处理已创建 prediction 未在同步窗口内完成，以及
202 Accepted未能进入轮询的问题。🚀 变更类型 / Type of change
🔗 关联任务 / Related Issue
✅ 提交前检查项 / Checklist
📸 运行证明 / Proof of Work
最新提交后已通过：
go test ./relay/...git diff --check回归测试覆盖：
201 Created与202 Accepted均可进入 adaptor，并在内部规范化为200。202仍被拒绝，上游失败状态不会被误判为成功。202 processing + partial output → succeeded + 完整多图输出。真实链路验证中，超过同步等待窗口的 Replicate 生图请求在约 3 分钟后最终返回 HTTP
200，且未再出现channel error ... status code: 202。Summary by CodeRabbit
New Features
Bug Fixes