chore(changelog): #5470 DAILY_V3 配车快照回调降级-修改接口-内部服务
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schema: "hl-changelog/v2"
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ticket: "5470"
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title: "DAILY_V3 配车快照回调 hmac-secret 缺失降级 SHA-256"
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consumer: "internal"
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change_type: "修改接口"
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backend_status: "deployed"
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gateway_status: "not_required"
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frontend_status: "not_required"
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frontend_owner: ""
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frontend_ref: ""
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target_release: ""
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verified_at: "2026-08-04"
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status_note: "Fleet→order DAILY_V3 配车快照回调在 order.assignment.snapshot.hmac-secret 未配置时不再 500,降级无密钥 SHA-256 指纹;fleet outbox 投递 SUCCESS、order_vehicle_assignment 正常落库。"
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updated_at: "2026-08-04"
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base: "dev-v3"
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---
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# 【修改接口·内部服务】DAILY_V3 配车快照回调 hmac-secret 缺失降级 (#5470)
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> **PR**: #5474 | **服务**: order-v3 | **更新时间**: 2026-08-04
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## 1. 接口背景
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fleet 派单(holdMode=0 创建成功)后通过 DAILY_V3 快照 outbox 回调 order-v3 同步配车投影。order 侧对回调请求计算拓扑指纹(`topology_fingerprint`,幂等/计数校验共用)需要 `order.assignment.snapshot.hmac-secret` 配置;该配置缺失时原实现 fail-fast 抛 `IllegalStateException` → 回调 HTTP 500 → 快照不落库、fleet outbox 无限重试。本次改为配置缺失时降级为无密钥 SHA-256 指纹并记 warn 日志。
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## 变更接口清单
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| # | 接口名 | 方法 | 路径 | 变更类型 | 说明 |
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|---|--------|------|------|----------|------|
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| 1 | DAILY_V3 配车快照回写 | POST | `/v3/internal/order/vehicle-assignment/callback` | 修改 | hmac-secret 未配置时不再 500,降级 SHA-256 指纹继续落库 |
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## 2. 行为变化
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| 场景 | 原来 | 现在 |
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|------|------|------|
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| `order.assignment.snapshot.hmac-secret` 未配置 | HTTP 500 `Fleet snapshot HMAC secret is not configured`,快照不落库,fleet outbox 无限重试 | 200 正常处理;拓扑指纹改用无密钥 SHA-256(64 位 hex),后端 warn 日志提示降级 |
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| hmac-secret 已配置 | HMAC-SHA256 指纹 | 不变 |
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| 同 payload 重复投递(同 revision+eventId+digest) | IDEMPOTENT | 不变(降级指纹同样幂等) |
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| stale revision | STALE_IGNORED | 不变 |
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## 3. 接口详情
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- **方法/路径**:`POST /v3/internal/order/vehicle-assignment/callback`
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- **认证**:internal token(`X-Internal-Token`)+ `VehicleAssignmentSnapshotInternalTokenFilter` fail-closed;网关不暴露至公网
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- **请求体**:`VehicleAssignmentSnapshotCallbackReqVO`(contractVersion=DAILY_V3、eventId、orderId、requirementId、snapshotRevision、planServiceDates/planFleetItemIndexes/planTopologySize、dailyAssignments[])
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- **响应**:`{eventId, orderId, requirementId, result(APPLIED/IDEMPOTENT/STALE_IGNORED/ORDER_CANCELLED_IGNORED), acceptedSnapshotRevision, activeDailyCellCount, usedVehicleDayCount, feeReadyVehicleDayCount, snapshotActive, processedAt}`
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- **错误码**:契约不支持/快照非法/需求不存在/订单不匹配/revision 冲突/结算已冻结等业务码不变;不再出现未捕获 500
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## 4. 前端需要做什么
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无(internal 接口,无前端消费)。
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## 5. 后端测试、部署与验证
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- 单元测试:`VehicleAssignmentSnapshotDigestTest` 3 用例(空 secret 降级 SHA-256 确定性 + 字段敏感、HMAC 确定性、全字段覆盖);`DailyVehicleAssignmentSnapshotServiceTest` 12 用例(含 IDEMPOTENT/STALE/revision 冲突)。
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- 模块验证:`mvn -pl hl-order-service-v3 -am verify` 7427 测试 0 失败。
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- 部署:TEST hl-order-service-v3 rolling 部署完成(dev-v3 @ 97ad827da,双实例 UP)。
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- 验证(TEST 2026-08-04):对隔离事件 `342887996946780160`(orderId=2084274056961331202)requeue 重放 → fleet outbox `SUCCESS`(processed_at 14:04:00,retry_count 归零);`order_vehicle_assignment` 3 行落库(8-03~8-05,used=3/feeReady=3,driver_phone_ciphertext 加密列正常);`order_vehicle_requirement` 回写 `assignment_contract_version=DAILY_V3`、`assignment_snapshot_revision=1`、`assignment_event_id=342887996946780160`、`assignment_snapshot_active=1`、status=DONE;error_logs 无修复后新增 500(仅 7 条修复前历史记录)。
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## 关联 / 联系人
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### 联系人
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- **后端负责人**: @wx
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