f3dc4d0939
为什么：原 controller handler 在 HTTP 层同时承担了 4 项 usecase 职责 （多源拼装、错误降级策略、limit 硬编码、响应结构组装），违反了 "controller 只做参数解析 + 调用 + 序列化" 的边界。等后续给衍生品加 缓存 / taker volume / 数据质量字段时，HTTP 层会持续变厚。 改动： - 新增 internal/usecase/market_query.go: MarketQueryUsecase.GetDerivatives() 并发拉 current funding/OI + 串行查历史 + 错误聚合为 warnings 返回 - /derivatives handler 退化到 4 行；MarketDeps / restapi.Deps 同步收窄 - /klines 保持直查 KlineRepo（thin query，G11 例外） - 新增 G11 守卫：grep "FundingRepo|OIRepo|LSRepo|TakerRepo" internal/controller 破坏性 API 变更（/derivatives 响应）： - 删除 funding.error / openInterest.error - 新增顶层 warnings: []string 顶层 symbol / funding / openInterest / longShortRatio / takerBuySellVolume 保持。 harness 同步： - AGENTS.md §6 加 G11 grep - ai/project-map.md 加 market_query.go + /derivatives 数据流分支 - ai/task-templates.md T6 加"破坏性变体"分支（本次重构暴露了原假设过严） - ai/harness-health.md W1 记一次轻量验证 + 守卫数 10→11 验收: go build / go vet / G6 grep / G11 grep 全绿。
114 lines
2.7 KiB
Go
114 lines
2.7 KiB
Go
package usecase
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import (
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"context"
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"sync"
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"golang.org/x/sync/errgroup"
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"cryptoHermes/internal/entity"
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)
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const (
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derivativesFundingHistoryLen = 100
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derivativesOIHistoryLen = 200
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derivativesLongShortLen = 200
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)
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type MarketQueryUsecase struct {
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derivatives DerivativesProvider
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fundingRepo FundingRepository
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oiRepo OpenInterestRepository
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lsRepo LongShortRatioRepository
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}
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func NewMarketQueryUsecase(
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derivatives DerivativesProvider,
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fundingRepo FundingRepository,
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oiRepo OpenInterestRepository,
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lsRepo LongShortRatioRepository,
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) *MarketQueryUsecase {
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return &MarketQueryUsecase{
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derivatives: derivatives,
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fundingRepo: fundingRepo,
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oiRepo: oiRepo,
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lsRepo: lsRepo,
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}
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}
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func (u *MarketQueryUsecase) GetDerivatives(ctx context.Context, symbol, period string) (*entity.DerivativesBundle, []string, error) {
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var (
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currentFund *entity.FundingRate
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currentOI *entity.OpenInterest
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warnMu sync.Mutex
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warnings []string
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)
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addWarn := func(w string) {
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warnMu.Lock()
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warnings = append(warnings, w)
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warnMu.Unlock()
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}
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g, gctx := errgroup.WithContext(ctx)
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g.Go(func() error {
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f, err := u.derivatives.GetCurrentFunding(gctx, symbol)
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if err != nil {
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addWarn("current funding fetch failed: " + err.Error())
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return nil
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}
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currentFund = f
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return nil
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})
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g.Go(func() error {
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oi, err := u.derivatives.GetCurrentOpenInterest(gctx, symbol)
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if err != nil {
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addWarn("current OI fetch failed: " + err.Error())
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return nil
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}
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currentOI = oi
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return nil
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})
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_ = g.Wait()
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fundingHist, err := u.fundingRepo.FindRecent(ctx, symbol, derivativesFundingHistoryLen)
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if err != nil {
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addWarn("funding history query failed: " + err.Error())
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}
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oiHist, err := u.oiRepo.FindRecent(ctx, symbol, period, derivativesOIHistoryLen)
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if err != nil {
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addWarn("OI history query failed: " + err.Error())
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}
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globalLS, err := u.lsRepo.FindRecent(ctx, symbol, period, entity.RatioTypeGlobalAccount, derivativesLongShortLen)
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if err != nil {
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addWarn("global long/short query failed: " + err.Error())
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}
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topLS, err := u.lsRepo.FindRecent(ctx, symbol, period, entity.RatioTypeTopTraderPosition, derivativesLongShortLen)
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if err != nil {
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addWarn("top trader position long/short query failed: " + err.Error())
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}
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bundle := &entity.DerivativesBundle{
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Funding: entity.FundingBundle{
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Current: currentFund,
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History: fundingHist,
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},
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OpenInterest: entity.OpenInterestBundle{
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Current: currentOI,
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History: oiHist,
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},
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LongShortRatio: entity.LongShortBundle{
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Global: globalLS,
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TopTraderPosition: topLS,
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},
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TakerBuySellVolume: []entity.TakerBuySellVolume{},
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}
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if warnings == nil {
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warnings = []string{}
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}
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return bundle, warnings, nil
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}
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