[英]MongoDB transaction with @NestJs/mongoose not working
我真的需要你的幫助。 我與@NestJs/mongoose 的 MongoDB 交易無法正常工作...當我的條帶支付失敗時回滾無法正常工作...不過,我的訂單收集保存了數據...我該如何解決這個問題..?
async create(orderData: CreateOrderServiceDto): Promise<any> {
const session = await this.connection.startSession();
session.startTransaction();
try {
const createOrder = new this.orderModel(orderData);
const order = await createOrder.save();
await this.stripeService.charge(
orderData.amount,
orderData.paymentMethodId,
orderData.stripeCustomerId,
);
await session.commitTransaction();
return order;
} catch (error) {
await session.abortTransaction();
throw error;
} finally {
await session.endSession();
}
}
我遇到了同樣的問題,我發現在 github 上: Mongo DB Transactions With Mongoose & Nestjs
所以我認為,根據這個問題,你必須像這樣調用 model 的create
方法:
const order = await this.orderModel.create(orderData, { session });
如您所見, Model.create
方法有一個以SaveOptions
作為參數的重載:
create(docs: (AnyKeys<T> | AnyObject)[], options?: SaveOptions): Promise<HydratedDocument<T, TMethodsAndOverrides, TVirtuals>[]>;
它采用可選的SaveOptions
參數,該參數可以包含 session:
interface SaveOptions {
checkKeys?: boolean;
j?: boolean;
safe?: boolean | WriteConcern;
session?: ClientSession | null;
timestamps?: boolean;
validateBeforeSave?: boolean;
validateModifiedOnly?: boolean;
w?: number | string;
wtimeout?: number;
}
請注意Model.save()
也可以采用SaveOptions
參數。 所以你也可以像你那樣做:
const createOrder = new this.orderModel(orderData);
const order = await createOrder.save({ session });
當我做很多需要交易的事情時,我想出了這個助手來避免許多代碼重復:
import { InternalServerErrorException } from "@nestjs/common"
import { Connection, ClientSession } from "mongoose"
export const mongooseTransactionHandler = async <T = any>(
method: (session: ClientSession) => Promise<T>,
onError: (error: any) => any,
connection: Connection, session?: ClientSession
): Promise<T> => {
const isSessionFurnished = session === undefined ? false : true
if (isSessionFurnished === false) {
session = await connection.startSession()
session.startTransaction()
}
let error
let result: T
try {
result = await method(session)
if (isSessionFurnished === false) {
await session.commitTransaction()
}
} catch (err) {
error = err
if (isSessionFurnished === false) {
await session.abortTransaction()
}
} finally {
if (isSessionFurnished === false) {
await session.endSession()
}
if (error) {
onError(error)
}
return result
}
}
可選參數session
是為了防止您正在執行嵌套嵌套事務。 這就是為什么我檢查是否提供了 session。 如果是,則意味着我們處於嵌套事務中。 因此,我們將讓主事務提交、中止並結束 session。
例如:你刪除了一個User
model,然后這個用戶的頭像是一個File
model。
/** UserService **/
async deleteById(id: string): Promise<void> {
const transactionHandlerMethod = async (session: ClientSession): Promise<void> => {
const user = await this.userModel.findOneAndDelete(id, { session })
await this.fileService.deleteById(user.avatar._id.toString(), session)
}
const onError = (error: any) => {
throw error
}
await mongooseTransactionHandler<void>(
transactionHandlerMethod,
onError,
this.connection
)
}
/** FileService **/
async deleteById(id: string, session?: ClientSession): Promise<void> {
const transactionHandlerMethod = async (session: ClientSession): Promise<void> => {
await this.fileModel.findOneAndRemove(id, { session })
}
const onError = (error: any) => {
throw error
}
await mongooseTransactionHandler<void>(
transactionHandlerMethod,
onError,
this.connection,
session
)
}
你可以像這樣使用它:
async create(orderData: CreateOrderServiceDto): Promise<any> {
const transactionHandlerMethod = async (session: ClientSession): Promise<Order> => {
const createOrder = new this.orderModel(orderData);
const order = await createOrder.save({ session });
await this.stripeService.charge(
orderData.amount,
orderData.paymentMethodId,
orderData.stripeCustomerId,
);
return order
}
const onError = (error: any): void => {
throw error
}
const order = await mongooseTransactionHandler<Order>(
transactionHandlerMethod,
onError,
this.connection
)
return order
}
希望它會有所幫助。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.