52 lines
1.7 KiB
Go
52 lines
1.7 KiB
Go
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package application
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import (
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"dddexample/pkg/application/external"
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"dddexample/pkg/application/repository"
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"dddexample/pkg/domain/entity"
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"dddexample/pkg/domain/service"
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"dddexample/pkg/infrastructure/externalimp"
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"dddexample/pkg/infrastructure/repositoryimp"
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)
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var transferApplication *TransferApplication
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type TransferApplication struct {
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repository repository.UserRepository
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exchangeRateRepository external.ExchangeRateRepository
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queueRepository external.QueueMsgRepository
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}
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func init() {
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transferApplication = &TransferApplication{
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repository: &repositoryimp.UserRepositoryImp{},
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exchangeRateRepository: &externalimp.ExchangeRage{},
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queueRepository: &externalimp.KafkaQueue{},
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}
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}
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func (a *TransferApplication) Transfer(sourceUserId int, targetAccountNumber string, targetAmount float64, targetCurrency string) error {
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money := entity.Money{Amount: targetAmount, Currency: targetCurrency}
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// 1. 从数据库读取数据，忽略所有校验逻辑如账号是否存在等
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sourceAccountDO := a.repository.SelectByID(sourceUserId)
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targetAccountDO := a.repository.SelectByAccountNumber(targetAccountNumber)
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// 3. 获取外部数据，并且包含一定的业务逻辑 获取汇率
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rate, _ := a.exchangeRateRepository.GetExchangeRage(sourceAccountDO.Currency, targetCurrency)
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err := service.Transfer(sourceAccountDO, targetAccountDO, money, rate)
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if err != nil {
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return err
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}
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a.repository.UpdateAccountMoney(sourceAccountDO)
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a.repository.UpdateAccountMoney(targetAccountDO)
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// 7. 发送审计消息String message = sourceUserId + "," + targetAccountNumber + "," + targetAmount + "," + targetCurrency;
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err = a.queueRepository.SendMsg("topic", "")
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return err
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}
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