53 lines
3.0 KiB
Go
53 lines
3.0 KiB
Go
package common
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import (
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"context"
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"time"
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"github.com/shopspring/decimal"
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)
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// TaskBillingProvider 异步任务计费接口
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// 异步任务计费基于时长/分辨率等比率，非 token 数。
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// ratios 键约定见 TaskAdaptor.EstimateBilling（float64 乘数 + spec.* 规格事实值）
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type TaskBillingProvider interface {
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// EstimateTaskCost 估算任务费用。
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// taskBody 为归一化后的任务体（转换后通用格式）：定价配置了参数倍率（param_multipliers）时，
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// 实现方在函数内求值并把命中倍率就地注入 ratios（param_multiplier / param_matched 键，
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// 随任务持久化保证预扣/结算/重算三口径同源）；nil body = 不求值。
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EstimateTaskCost(ctx context.Context, tenantID int64, modelName string, ratios map[string]any, taskBody []byte) (decimal.Decimal, error)
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// PreDeductTask 预扣任务费用
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PreDeductTask(ctx context.Context, tenantID int64, requestID string, estimatedCost decimal.Decimal, modelName string) (decimal.Decimal, error)
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// CheckRateLimit QPS 限流检查
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CheckRateLimit(ctx context.Context, tenantID, userID, apiKeyID int64, keyQPS int) (allowed bool, limitLevel string, limit int, remaining int, resetAt int64)
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// AcquireApiKeyConcurrent 获取 API Key 级并发许可
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AcquireApiKeyConcurrent(ctx context.Context, apiKeyID int64, limit int) bool
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// ReleaseApiKeyConcurrent 释放 API Key 级并发许可
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ReleaseApiKeyConcurrent(ctx context.Context, apiKeyID int64)
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// CheckApiKeyQuota 检查 API Key 额度是否足够
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CheckApiKeyQuota(ctx context.Context, apiKeyID int64, preDeductAmount decimal.Decimal) error
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// SettleTaskSuccess 任务成功结算（含计费快照）。billAt 为任务受理时刻（时段定价按该时刻评估，
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// 异步任务结算滞后数分钟~小时，按结算时刻会丢失受理时的时段价）
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SettleTaskSuccess(ctx context.Context, tenantID, userID, apiKeyID, channelID int64, modelName, requestID string, actualCost, preDeductAmount decimal.Decimal, totalTokens, completionTokens int, ratios map[string]any, taskID string, billAt time.Time) (*SettlementResult, error)
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// SettleTaskFailed 任务失败退还预扣
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SettleTaskFailed(ctx context.Context, tenantID int64, requestID string, preDeductAmount decimal.Decimal) error
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// IncrApiKeyQuotaUsed 结算后累加 API Key 已用额度
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IncrApiKeyQuotaUsed(ctx context.Context, apiKeyID int64, amount decimal.Decimal)
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// AdjustTaskBilling 调整预扣金额（提交后上游确认了新参数）
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AdjustTaskBilling(ctx context.Context, tenantID int64, requestID string, preDeductAmount, newEstimatedCost decimal.Decimal) (decimal.Decimal, error)
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// RecalculateByTokens 根据上游返回的 total_tokens 重算费用（billAt 为任务受理时刻，时段定价用）
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// totalTokens: 上游返回的 token 计费单位
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// ratios: 提交时保存的计费上下文（如 video_input 折扣）
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RecalculateByTokens(ctx context.Context, tenantID int64, modelName string, totalTokens int, ratios map[string]any, billAt time.Time) (decimal.Decimal, error)
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}
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