[英]How to access SSM Parameter Store Values through AWS Lambda Function Environment Variables using Serverless Framework?
[英]Nestjs on AWS Lambda (Serverless Framework) | How to access the event parameter?
我在 AWS Lambda 上托管 Nestjs 應用程序(使用無服務器框架)。 請注意,實施在 AWS API 網關之后。
問:如何訪問我的 Nest controller
中的event
參數?
這就是我引導 NestJS 服務器的方式:
import { APIGatewayProxyHandler } from 'aws-lambda';
import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { Server } from 'http';
import { ExpressAdapter } from '@nestjs/platform-express';
import * as awsServerlessExpress from 'aws-serverless-express';
import * as express from 'express';
let cachedServer: Server;
const bootstrapServer = async (): Promise<Server> => {
const expressApp = express();
const adapter = new ExpressAdapter(expressApp);
const app = await NestFactory.create(AppModule, adapter);
app.enableCors();
await app.init();
return awsServerlessExpress.createServer(expressApp);
}
export const handler: APIGatewayProxyHandler = async (event, context) => {
if (!cachedServer) {
cachedServer = await bootstrapServer()
}
return awsServerlessExpress.proxy(cachedServer, event, context, 'PROMISE')
.promise;
};
這是一個 controller 中的 function:
@Get()
getUsers(event) { // <-- HOW TO ACCESS event HERE?? This event is undefined.
return {
statusCode: 200,
body: "This function works and returns this JSON as expected."
}
我很難理解如何訪問event
參數,它可以在“普通”節點 12.x Lambda function 中輕松訪問:
module.exports.hello = async (event) => {
return {
statusCode: 200,
body: 'In a normal Lambda, the event is easily accessible, but in NestJS its (apparently) not.'
};
};
解決方案:
在引導期間將 AwsExpressServerlessMiddleware 添加到您的設置中:
const awsServerlessExpressMiddleware = require('aws-serverless-express/middleware')
app.use(awsServerlessExpressMiddleware.eventContext())
注意: app.use
應該在app.init()
之前
現在可以訪問event
和context
object:
var event = req.apiGateway.event;
var context = req.apiGateway.context;
學分: 這個答案
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