CaIon
91ed4e196a
- Added support for tiered billing expressions in the billing system. - Introduced new types and functions for handling billing expressions, including caching and execution. - Updated existing billing logic to accommodate tiered billing scenarios. - Enhanced request handling to support incoming billing expression requests. - Added tests for tiered billing functionality to ensure correctness.
25 lines
996 B
Go
25 lines
996 B
Go
package common
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import "github.com/gin-gonic/gin"
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// BillingSettler 抽象计费会话的生命周期操作。
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// 由 service.BillingSession 实现，存储在 RelayInfo 上以避免循环引用。
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type BillingSettler interface {
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// Settle 根据实际消耗额度进行结算，计算 delta = actualQuota - preConsumedQuota，
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// 同时调整资金来源（钱包/订阅）和令牌额度。
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Settle(actualQuota int) error
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// Refund 退还所有预扣费额度（资金来源 + 令牌），幂等安全。
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// 通过 gopool 异步执行。如果已经结算或退款则不做任何操作。
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Refund(c *gin.Context)
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// NeedsRefund 返回会话是否存在需要退还的预扣状态（未结算且未退款）。
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NeedsRefund() bool
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// GetPreConsumedQuota 返回实际预扣的额度值（信任用户可能为 0）。
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GetPreConsumedQuota() int
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// Reserve 将预扣额度补到目标值；若目标值不高于当前预扣额度则不做任何事。
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Reserve(targetQuota int) error
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}
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