63 lines
2.8 KiB
Go
63 lines
2.8 KiB
Go
package wallet
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import (
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"context"
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"github.com/bytedance/sonic"
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"gorm.io/gorm"
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walletapp "github.com/break/junhong_cmp_fiber/internal/application/wallet"
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"github.com/break/junhong_cmp_fiber/internal/infrastructure/messaging/outbox"
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"github.com/break/junhong_cmp_fiber/internal/model"
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"github.com/break/junhong_cmp_fiber/pkg/constants"
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"github.com/break/junhong_cmp_fiber/pkg/errors"
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)
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// DebitEventConsumer 校验已投递的代理主钱包扣款事件具有对应权威资金流水。
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// 后续余额预警等消费者在此稳定接缝上扩展，不需要回读或改写订单扣款事务。
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type DebitEventConsumer struct {
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db *gorm.DB
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}
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// NewDebitEventConsumer 创建代理主钱包扣款事件消费者。
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func NewDebitEventConsumer(db *gorm.DB) *DebitEventConsumer {
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return &DebitEventConsumer{db: db}
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}
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// Consume 校验事件载荷及不可变流水，保证未知或损坏事件不会被静默确认。
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func (c *DebitEventConsumer) Consume(ctx context.Context, envelope outbox.DeliveryEnvelope) error {
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if c == nil || c.db == nil {
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return errors.New(errors.CodeInternalError, "代理主钱包扣款事件消费者未配置")
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}
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if envelope.EventType != constants.OutboxEventTypeAgentMainWalletDebited ||
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envelope.PayloadVersion != constants.AgentMainWalletDebitedPayloadVersionV1 {
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return errors.New(errors.CodeInvalidParam, "代理主钱包扣款事件类型或版本不受支持")
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}
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var event walletapp.DebitedEvent
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if err := sonic.Unmarshal(envelope.Payload, &event); err != nil {
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return errors.Wrap(errors.CodeInvalidParam, err, "代理主钱包扣款事件载荷无法解析")
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}
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if event.EventID != envelope.EventID || event.WalletID == 0 || event.ReferenceID == 0 ||
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event.ReferenceType != constants.ReferenceTypeOrder || event.TransactionType != constants.AgentTransactionTypeDeduct ||
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event.Amount <= 0 {
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return errors.New(errors.CodeInvalidParam, "代理主钱包扣款事件载荷不完整")
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}
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var transaction model.AgentWalletTransaction
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err := c.db.WithContext(ctx).Unscoped().
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Where("agent_wallet_id = ? AND reference_type = ? AND reference_id = ? AND transaction_type = ? AND status = ?",
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event.WalletID, event.ReferenceType, event.ReferenceID, constants.AgentTransactionTypeDeduct, constants.TransactionStatusSuccess).
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First(&transaction).Error
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if err != nil {
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if err == gorm.ErrRecordNotFound {
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return errors.New(errors.CodeInternalError, "代理主钱包扣款事件缺少权威资金流水")
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}
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return errors.Wrap(errors.CodeDatabaseError, err, "查询代理主钱包扣款流水失败")
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}
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if transaction.Amount != -event.Amount || transaction.BalanceBefore != event.BalanceBefore ||
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transaction.BalanceAfter != event.BalanceAfter {
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return errors.New(errors.CodeInternalError, "代理主钱包扣款事件与权威资金流水不一致")
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}
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return nil
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}
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