我是第一次使用 Mongoose 事务。根据文档和一些文章,我能够使用
run-rs
运行本地副本。然而,我遇到了两个问题:
MongoError: No transaction started
。我已尝试检查解决方案,但找不到任何解决此问题的方法。这两个函数如下所示:
await transactionDb
.handleMoneyTransfer({
senderId,
receiverId: paymentInfo.getReceiver(),
amount: paymentInfo.getAmountToPay(),
ref
})
return await sendNotificationEmail({ ref, user })
handleMoneyTransfer
函数应该首先运行,然后 sendNotificationEmail
应该接下来运行,但这里的情况并非如此。
这是处理下面列出的 Mongoose 事务的代码。
async function handleMoneyTransfer({ senderId, receiverId, amount, ref }) {
const session = await mongoose.startSession()
try {
const sender = await User.findOne({ _id: senderId }).session(session)
sender.balance -= amount
await sender.save({ session })
const receiver = await User.findOne({ _id: receiverId }).session(session)
// receiver.balance += amount
const transactionInfo = await Transaction.findOne({
reference: ref
}).session(session)
const newEscrow = await new Escrow({
amount,
reference: ref,
buyerInfo: {
buyerId: sender._id,
email: sender.email
},
sellerInfo: {
sellerId: receiverId,
email: receiver.email
},
currentTransaction: {
transaction: transactionInfo
}
})
await newEscrow.save({ session })
await session.commitTransaction()
} catch (error) {
await session.abortTransaction()
} finally {
session.endSession()
}
}
这是我使用 Mongoose 连接的方式:
const setupDB = async (uri, dbUrl) => {
try {
await mongoose.connect(`${uri}/${dbUrl}`, {
useUnifiedTopology: true,
useNewUrlParser: true,
replicaSet: 'rs'
})
console.log('Connected')
} catch (e) {
return console.log(e)
}
}
翻译为:
setupDB(
'mongodb://DESKTOP-SNA1HQK:27017,DESKTOP-SNA1HQK:27018,DESKTOP-SNA1HQK:27019',
'escrow?replicaSet=rs'
)
现在,我一直致力于修复
No transaction started
错误,并让这些函数按照它们放置的顺序运行。
非常感谢您的帮助,提前谢谢您。
您似乎错过了交易的实际开始。将以下内容添加到您的代码中应该可以解决问题:
async function handleMoneyTransfer({ senderId, receiverId, amount, ref }) {
const session = await mongoose.startSession()
session.startTransaction();
// rest of your code
}