李建琦
6d655c9903
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380 lines
14 KiB
Go
380 lines
14 KiB
Go
package service
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import (
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"context"
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"crypto/sha256"
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"encoding/hex"
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"errors"
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"fmt"
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"strconv"
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"strings"
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"time"
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"github.com/Wei-Shaw/sub2api/internal/config"
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"github.com/Wei-Shaw/sub2api/internal/pkg/logger"
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"go.uber.org/zap"
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)
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const (
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batchImageSettlementRequestPrefix = "batch_image_settlement:"
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batchImageSettlementRetryDelay = time.Minute
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batchImageSettlementMaxRetries = 5
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batchImageCostEpsilon = 0.00000001
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)
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type BatchImagePricingResolver interface {
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BatchImageUnitPrice(ctx context.Context, job *BatchImageJob) (float64, error)
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}
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type BatchImageModelPricingResolver struct {
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Resolver *ModelPricingResolver
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}
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func (r *BatchImageModelPricingResolver) BatchImageUnitPrice(ctx context.Context, job *BatchImageJob) (float64, error) {
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if r == nil || r.Resolver == nil || job == nil || strings.TrimSpace(job.Model) == "" {
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return 0, ErrBatchImageSettlementPricingMissing
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}
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resolved := r.Resolver.Resolve(ctx, PricingInput{Model: job.Model})
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if resolved == nil {
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return 0, ErrBatchImageSettlementPricingMissing
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}
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switch resolved.Mode {
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case BillingModeImage, BillingModePerRequest:
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if resolved.DefaultPerRequestPrice > 0 {
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return resolved.DefaultPerRequestPrice, nil
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}
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if len(resolved.RequestTiers) == 1 && resolved.RequestTiers[0].PerRequestPrice != nil && *resolved.RequestTiers[0].PerRequestPrice >= 0 {
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return *resolved.RequestTiers[0].PerRequestPrice, nil
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}
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case BillingModeToken:
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if resolved.BasePricing != nil && (resolved.BasePricing.ImageOutputPriceExplicit || resolved.BasePricing.ImageOutputPricePerToken > 0) {
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return resolved.BasePricing.ImageOutputPricePerToken, nil
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}
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}
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return 0, ErrBatchImageSettlementPricingMissing
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}
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type BatchImageSettlementService struct {
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Repo BatchImageRepository
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BillingRepo UsageBillingRepository
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UsageLogRepo UsageLogRepository
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Pricing BatchImagePricingResolver
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AuthCache APIKeyAuthCacheInvalidator
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Config *config.Config
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}
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type BatchImageSettlementResult struct {
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BatchID string
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SuccessCount int
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FailCount int
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ActualCost float64
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ManifestHash string
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RequestID string
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AlreadySettled bool
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}
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func (s *BatchImageSettlementService) Settle(ctx context.Context, batchID string) (*BatchImageSettlementResult, error) {
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if s == nil || s.Repo == nil || s.BillingRepo == nil || s.Pricing == nil {
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return nil, ErrBatchImageSettlementBillingFailed.WithCause(errors.New("batch image settlement service is not configured"))
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}
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job, err := s.Repo.GetBatchImageJobByBatchID(ctx, batchID)
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if err != nil {
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return nil, err
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}
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manifestHash := BuildBatchImageSettlementManifestHash(job)
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result := &BatchImageSettlementResult{
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BatchID: job.BatchID,
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SuccessCount: job.SuccessCount,
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FailCount: job.FailCount,
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ManifestHash: manifestHash,
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RequestID: BatchImageCaptureRequestID(job.BatchID),
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}
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if job.ActualCost != nil {
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result.ActualCost = *job.ActualCost
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}
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if job.Status == BatchImageJobStatusCompleted {
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result.AlreadySettled = true
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return result, nil
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}
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if job.Status != BatchImageJobStatusSettling {
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return nil, ErrBatchImageSettlementInvalidStatus
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}
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if job.APIKeyID == nil || *job.APIKeyID <= 0 {
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return nil, ErrBatchImageSettlementMissingAPIKeyID
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}
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if job.AccountID == nil || *job.AccountID <= 0 {
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return nil, ErrBatchImageSettlementMissingAccountID
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}
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// 重试耗尽检查必须先于各类可重复失败的校验（counts/manifest/定价/超冻结），
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// 否则这些错误路径会绕过耗尽出口，settling job 无限 requeue、冻结余额永不释放。
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if isBatchImageSettlementRetryExhausted(job) {
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return nil, s.failExhaustedSettlement(ctx, job, "settlement retry limit reached: "+batchImageDerefString(job.LastErrorCode))
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}
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if job.SuccessCount < 0 || job.FailCount < 0 || job.ItemCount < 0 || job.SuccessCount+job.FailCount > job.ItemCount {
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if failErr := s.recordSettlementFailure(ctx, job, "SETTLEMENT_INVALID_COUNTS",
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fmt.Sprintf("success=%d fail=%d item_count=%d", job.SuccessCount, job.FailCount, job.ItemCount)); failErr != nil {
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return nil, failErr
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}
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return nil, ErrBatchImageSettlementInvalidCounts
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}
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if strings.TrimSpace(batchImageDerefString(job.ManifestHash)) != "" && batchImageDerefString(job.ManifestHash) != manifestHash {
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if failErr := s.recordSettlementFailure(ctx, job, "SETTLEMENT_MANIFEST_CONFLICT", "manifest hash conflict"); failErr != nil {
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return nil, failErr
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}
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return nil, ErrBatchImageSettlementManifestConflict
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}
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unitPrice, err := s.settlementUnitPrice(ctx, job)
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if err == nil && unitPrice < 0 {
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err = ErrBatchImageSettlementPricingMissing
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}
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if err != nil {
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if failErr := s.recordSettlementFailure(ctx, job, "SETTLEMENT_PRICING_MISSING", err.Error()); failErr != nil {
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return nil, failErr
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}
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return nil, err
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}
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actualCost := float64(job.SuccessCount) * unitPrice
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result.ActualCost = actualCost
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holdAmount := job.EstimatedCost
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if job.HoldAmount != nil {
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holdAmount = *job.HoldAmount
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}
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if actualCost-holdAmount > batchImageCostEpsilon {
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msg := fmt.Sprintf("actual cost %.10f exceeds held amount %.10f", actualCost, holdAmount)
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if failErr := s.recordSettlementFailure(ctx, job, "SETTLEMENT_COST_EXCEEDS_HOLD", msg); failErr != nil {
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return nil, failErr
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}
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return nil, ErrBatchImageSettlementCostExceedsHold
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}
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if err := captureBatchImageBalanceHold(ctx, s.BillingRepo, job, actualCost, manifestHash); err != nil {
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msg := truncateBatchImageMessage(err.Error(), batchImageMaxErrorMessageLength)
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if failErr := s.recordSettlementFailure(ctx, job, "SETTLEMENT_BILLING_FAILED", msg); failErr != nil {
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return nil, failErr
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}
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return nil, err
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}
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s.invalidateAuthCache(ctx, job.UserID)
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now := time.Now()
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outputExpiresAt := now.Add(s.outputRetentionAfterTerminal())
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if err := s.Repo.MarkBatchImageJobSettled(ctx, MarkBatchImageJobSettledParams{
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BatchID: job.BatchID,
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ActualCost: actualCost,
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ManifestHash: manifestHash,
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Now: &now,
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OutputExpiresAt: &outputExpiresAt,
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EventPayload: map[string]any{
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"batch_id": job.BatchID,
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"request_id": result.RequestID,
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"success_count": job.SuccessCount,
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"fail_count": job.FailCount,
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"actual_cost": actualCost,
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"manifest_hash": manifestHash,
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},
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}); err != nil {
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return nil, err
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}
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s.recordUsageLog(ctx, job, actualCost, result.RequestID, now)
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return result, nil
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}
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// isBatchImageSettlementRetryExhausted 判断 settling job 是否已达重试上限。
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// 必须覆盖所有 SETTLEMENT_* 失败码（而非仅 SETTLEMENT_BILLING_FAILED），
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// 否则 SETTLEMENT_COST_EXCEEDS_HOLD / SETTLEMENT_INVALID_COUNTS 等错误会无限 requeue。
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func isBatchImageSettlementRetryExhausted(job *BatchImageJob) bool {
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return job != nil &&
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job.Status == BatchImageJobStatusSettling &&
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job.RetryCount >= batchImageSettlementMaxRetries &&
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strings.HasPrefix(batchImageDerefString(job.LastErrorCode), "SETTLEMENT_")
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}
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// recordSettlementFailure 记录一次结算失败并递增 retry_count。
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// 重试达到上限时立即走耗尽出口（释放冻结余额并转 failed）；
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// 返回非 nil 时调用方应直接返回该错误。
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func (s *BatchImageSettlementService) recordSettlementFailure(ctx context.Context, job *BatchImageJob, code, message string) error {
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retryCount, recordErr := s.Repo.SetBatchImageJobSettlementFailed(ctx, job.BatchID, code, truncateBatchImageMessage(message, batchImageMaxErrorMessageLength))
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if recordErr != nil {
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logger.L().Warn("batch_image.settlement_failure_record_failed",
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zap.String("batch_id", job.BatchID),
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zap.String("code", code),
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zap.Error(recordErr),
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)
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return nil
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}
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job.RetryCount = retryCount
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job.LastErrorCode = &code
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if retryCount >= batchImageSettlementMaxRetries {
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return s.failExhaustedSettlement(ctx, job, message)
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}
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return nil
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}
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func (s *BatchImageSettlementService) failExhaustedSettlement(ctx context.Context, job *BatchImageJob, message string) error {
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if s == nil || s.Repo == nil {
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return ErrBatchImageSettlementBillingFailed
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}
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// 释放指纹必须与其余所有释放点（processor/Cancel/recovery）一致地使用 RequestHash：
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// 它们共享同一 request id，payloadHash 不同会触发 ErrUsageBillingRequestConflict，
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// 导致后续 Cancel/重试永远失败、terminal job 变成毒消息。
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if err := releaseBatchImageBalanceHold(ctx, s.BillingRepo, job, batchImageDerefString(job.RequestHash)); err != nil {
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msg := truncateBatchImageMessage(err.Error(), batchImageMaxErrorMessageLength)
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if _, recordErr := s.Repo.SetBatchImageJobSettlementFailed(ctx, job.BatchID, "SETTLEMENT_RELEASE_FAILED", msg); recordErr != nil {
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logger.L().Warn("batch_image.settlement_release_failure_record_failed",
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zap.String("batch_id", job.BatchID),
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zap.Error(recordErr),
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)
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}
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return ErrBatchImageSettlementBillingFailed.WithCause(err)
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}
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s.invalidateAuthCache(ctx, job.UserID)
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msg := strings.TrimSpace(message)
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if msg == "" {
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msg = "settlement billing retry limit reached"
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}
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if err := s.Repo.TransitionBatchImageJobStatus(ctx, job.BatchID, BatchImageJobStatusFailed, BatchImageTransitionOptions{
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ErrorCode: batchImageStringPtr("SETTLEMENT_BILLING_RETRY_EXHAUSTED"),
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ErrorMessage: batchImageStringPtr(msg),
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EventType: "settlement_retry_exhausted",
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EventPayload: map[string]any{
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"batch_id": job.BatchID,
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"retry_count": job.RetryCount,
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},
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}); err != nil {
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return err
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}
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return ErrBatchImageSettlementBillingFailed
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}
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func (s *BatchImageSettlementService) recordUsageLog(ctx context.Context, job *BatchImageJob, actualCost float64, requestID string, createdAt time.Time) {
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if s == nil || s.UsageLogRepo == nil || job == nil || job.APIKeyID == nil || job.AccountID == nil {
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return
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}
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billingMode := string(BillingModeImage)
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accountRateMultiplier := job.AccountRateMultiplier
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inboundEndpoint := "/v1/images/batches"
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upstreamEndpoint := "vertex:batchPredictionJobs"
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imageSize := "1K"
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usageLog := &UsageLog{
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UserID: job.UserID,
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APIKeyID: *job.APIKeyID,
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AccountID: *job.AccountID,
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RequestID: strings.TrimSpace(requestID),
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Model: job.Model,
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RequestedModel: job.Model,
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InboundEndpoint: &inboundEndpoint,
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UpstreamEndpoint: &upstreamEndpoint,
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ImageCount: job.SuccessCount,
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ImageOutputCost: actualCost,
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TotalCost: actualCost,
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ActualCost: actualCost,
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RateMultiplier: job.GroupRateMultiplier * job.BatchDiscountMultiplier,
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AccountRateMultiplier: &accountRateMultiplier,
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BillingType: BillingTypeBalance,
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RequestType: RequestTypeSync,
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BillingMode: &billingMode,
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ImageSize: &imageSize,
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SessionID: job.SessionID,
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CreatedAt: createdAt,
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}
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writeUsageLogBestEffort(ctx, s.UsageLogRepo, usageLog, "service.batch_image_settlement")
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}
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func (s *BatchImageSettlementService) invalidateAuthCache(ctx context.Context, userID int64) {
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if s != nil && s.AuthCache != nil && userID > 0 {
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s.AuthCache.InvalidateAuthCacheByUserID(ctx, userID)
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}
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}
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func (s *BatchImageSettlementService) settlementUnitPrice(ctx context.Context, job *BatchImageJob) (float64, error) {
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if job != nil && job.PricingSnapshotVersion >= 1 {
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if job.BillableUnitPrice < 0 {
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return 0, ErrBatchImageSettlementPricingMissing
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}
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return job.BillableUnitPrice, nil
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}
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unitPrice, err := s.Pricing.BatchImageUnitPrice(ctx, job)
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if err != nil {
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return 0, err
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}
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return unitPrice, nil
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}
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func (s *BatchImageSettlementService) outputRetentionAfterTerminal() time.Duration {
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if s != nil && s.Config != nil && s.Config.BatchImage.OutputRetentionAfterTerminalHours > 0 {
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return time.Duration(s.Config.BatchImage.OutputRetentionAfterTerminalHours) * time.Hour
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}
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return 72 * time.Hour
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}
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func BatchImageSettlementRequestID(batchID string) string {
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return batchImageSettlementRequestPrefix + strings.TrimSpace(batchID)
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}
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func BuildBatchImageSettlementManifestHash(job *BatchImageJob) string {
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if job == nil {
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return ""
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}
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parts := []string{
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strings.TrimSpace(job.BatchID),
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strings.TrimSpace(job.Provider),
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strings.TrimSpace(job.Model),
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batchImageDerefString(job.ProviderJobName),
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batchImageDerefString(job.ProviderOutputRef),
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strconv.Itoa(job.SuccessCount),
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strconv.Itoa(job.FailCount),
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strconv.Itoa(job.ItemCount),
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}
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sum := sha256.Sum256([]byte(strings.Join(parts, "\x00")))
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return hex.EncodeToString(sum[:])
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}
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type BatchImagePipelineProcessor struct {
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ProviderProcessor *BatchImageProviderProcessor
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SettlementService *BatchImageSettlementService
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RetryDelay time.Duration
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}
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func (p *BatchImagePipelineProcessor) Process(ctx context.Context, batchID string) (BatchImageProcessResult, error) {
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if p == nil || p.ProviderProcessor == nil {
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return BatchImageProcessResult{}, errors.New("batch image pipeline processor is not configured")
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}
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job, err := p.ProviderProcessor.Repo.GetBatchImageJobByBatchID(ctx, batchID)
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if err != nil {
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return BatchImageProcessResult{}, err
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}
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if job.Status == BatchImageJobStatusSettling {
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if p.SettlementService == nil {
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return BatchImageProcessResult{Terminal: true}, nil
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}
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_, err := p.SettlementService.Settle(ctx, batchID)
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if err != nil {
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if errors.Is(err, ErrBatchImageSettlementBillingFailed) {
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updated, getErr := p.ProviderProcessor.Repo.GetBatchImageJobByBatchID(ctx, batchID)
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if getErr == nil && IsTerminalBatchImageJobStatus(updated.Status) {
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return BatchImageProcessResult{Terminal: true}, nil
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}
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delay := p.RetryDelay
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if delay <= 0 {
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delay = batchImageSettlementRetryDelay
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}
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return BatchImageProcessResult{RequeueAfter: delay}, nil
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}
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return BatchImageProcessResult{}, err
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}
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return BatchImageProcessResult{Terminal: true}, nil
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}
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return p.ProviderProcessor.Process(ctx, batchID)
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}
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func (r *BatchImageSettlementResult) String() string {
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if r == nil {
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return ""
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}
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return fmt.Sprintf("batch_id=%s success=%d fail=%d actual_cost=%0.10f already_settled=%t",
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r.BatchID, r.SuccessCount, r.FailCount, r.ActualCost, r.AlreadySettled)
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}
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