node.js - AWS Lambda 错误 "Cannot find module ' mongodb'"

Question

我已成功将函数部署到 AWS。

尝试调用该函数时(serverless invoke -f facebookAdInsert -l)，出现以下错误:

{
    "errorMessage": "Cannot find module 'mongodb'",
    "errorType": "Error",
    "stackTrace": [
        "Function.Module._load (module.js:474:25)",
        "Module.require (module.js:596:17)",
        "require (internal/module.js:11:18)",
        "Object.<anonymous> (/var/task/src/facebookAdInsert.js:222:18)",
        "__webpack_require__ (/var/task/src/facebookAdInsert.js:20:30)",
        "Object.<anonymous> (/var/task/src/facebookAdInsert.js:234:16)",
        "__webpack_require__ (/var/task/src/facebookAdInsert.js:20:30)",
        "Object.<anonymous> (/var/task/src/facebookAdInsert.js:303:16)",
        "__webpack_require__ (/var/task/src/facebookAdInsert.js:20:30)"
    ]
}

这是我的依赖项:

"dependencies": {
    "@babel/core": "^7.3.4",
    "@babel/preset-env": "^7.3.4",
    "aws-sdk": "^2.268.1",
    "babel-loader": "^8.0.5",
    "babel-plugin-transform-runtime": "^6.23.0",
    "babel-preset-env": "^1.7.0",
    "babel-preset-es2015": "^6.24.1",
    "dotenv": "^6.0.0",
    "moment": "^2.24.0",
    "mongodb": "^3.1.10",
    "mongoose": "^5.4.17",
    "parse-mongo-url": "^1.1.1",
    "request": "^2.88.0",
    "serverless-offline": "^3.33.0",
    "serverless-webpack": "^5.2.0",
    "webpack": "^4.29.6",
    "webpack-node-externals": "^1.7.2"
}

对于问题可能是什么有什么想法吗？根据我的研究，可能的解决方案是在部署之前运行 npm install 并将所有“devDependency”移动到“dependencies”，但这些都不起作用。

Answer 1

您缺少 AWS lambda 的 mongodb 层

打开终端并输入

1. mkdir Nodejs
2. cd Nodejs
3. npm init -y
4. npm 安装 mongodb
5. 压缩整个nodejs文件夹，确保解压该文件夹时您会得到以下结构

    nodejs
      +---node_modules
             +---------- (mongodb and other folders)

将此层上传到 AWS Lambda

将该层添加到您的 Lambda 函数

有了这个，它应该可以毫无问题地工作。

问候