Require is not defined in lambda function

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英文:

Require is not defined in lambda function

问题

抱歉,我只会提供代码的翻译,不会回答翻译问题。以下是您提供的代码的翻译:

首先如果这很琐碎的话我要道歉但是我尝试的每个解决方案都报错

简而言之我是AWS环境的新手选择了DynamoDB作为数据库设置我使用了一个Lambda函数以便能够从任何地方批量写入数据到云端

花了一些时间但我最终使它全部工作了但是出于错误选择或者说使用了默认的数据库位置为us-east-1现在长话短说出于法律原因数据应该位于欧洲所以我只是复制了一切并将所有内容迁移到eu-central-1

这就是问题开始出现的时候... 在us-east-1中的代码在node.js 16上运行使用"const AWS = require("aws-sdk");"

但是在eu-central-1中相同的语句一直报错如果我在node.js 16中运行它会显示以下信息
> "errorType": "ReferenceError",
>     "errorMessage": "在ES模块范围内未定义require,您可以使用import代替",
>     "stack": [
>         "ReferenceError: 在ES模块范围内未定义require,您可以使用import代替",
>         "在 file:///var/task/index.mjs:1:13 处",
>         "在 ModuleJob.run (node:internal/modules/esm/module_job:193:25) 处"
>     ]

如果我在node.js 18中运行它因为我发现require语句是在这个版本中添加的

> "errorType": "ReferenceError",
>     "errorMessage": "在ES模块范围内未定义require,您可以使用import代替",
>     "stack": [
>         "ReferenceError: 在ES模块范围内未定义require,您可以使用import代替",
>         "在 file:///var/task/index.mjs:1:13 处"
>     ]

我尝试了许多不同的语法但没有一个解决了我的问题或者解释了问题当我使用建议的import语句时会出现找不到aws-sdk文件的错误但是我尝试将它们安装在相同的位置但没有成功可能这是一个我应该追求的解决方案但我似乎找不到如何成功附加文件的清晰信息我尝试导出Lambda函数并将aws-sdk附加到文件夹中但仍然出现相同的错误)。更重要的是我想知道为什么会发生这种情况因为我绝对没有在us-east-1地区安装aws-sdk但在那里它正常工作而且require语句在那里定义了

所以任何阅读建议建议都欢迎我会保留这个更新并添加您需要提供帮助的代码或设置或建议更改的结果)。

这是工作中的Lambda代码来自us-east-1),代码与eu-central-1中的相同除了表名和位置

```javascript
const AWS = require("aws-sdk");

const dynamo = new AWS.DynamoDB.DocumentClient();

exports.handler = async (event, context) => {
  let body;
  let statusCode = 200;
  const headers = {
    "Content-Type": "application/json"
  };

  try {
    switch (event.routeKey) {
      case "DELETE /items/{id}":
        await dynamo
          .delete({
            TableName: "TestID",
            Key: {
              id: event.pathParameters.id
            }
          })
          .promise();
        body = `Deleted item ${event.pathParameters.id}`;
        break;
      case "GET /items/{id}":
        body = await dynamo
          .get({
            TableName: "TestID",
            Key: {
              id: event.pathParameters.id
            }
          })
          .promise();
        break;
      case "GET /items":
        body = await dynamo.scan({ TableName: "TestID" }).promise();
        break;
      case "PUT /items":
        let requestJSON = JSON.parse(event.body);
        if (!requestJSON[0].ModuleID || !requestJSON[0].DataID) {
          throw new Error("Missing required fields: ModuleID or DataID, greetings ");
        }
        await dynamo
          .put({
            TableName: "TestID",
            Item: {
              ModuleID: requestJSON[0].ModuleID,
              DataID: requestJSON[0].DataID,
              TimeStamp: requestJSON[0].TimeStamp,
              ValTemp: requestJSON[0].ValTemp
            }
          })
          .promise();
        body = `Put item ${requestJSON[0].DataID}`;
        break;
      case "PUT /items/batch":
        let requestJSONBatch = JSON.parse(event.body);
        let items = requestJSONBatch.map(item => {
          return {
            PutRequest: {
              Item: {
                ModuleID: item.ModuleID,
                DataID: item.DataID,
                TimeStamp: item.TimeStamp,
                T2: item.T2,
                ValTemp: item.ValTemp
              }
            }
          };
        });
        await dynamo
          .batchWrite({
            RequestItems: {
              "TestID": items
            }
          })
          .promise();
        body = `PUT items`;
        break;
      default:
        throw new Error(`Unsupported route: "${event.routeKey}"`);
    }
  } catch (err) {
    statusCode = 400;
    body = err.message;
  } finally {
    body = JSON.stringify(body);
  }

  return {
    statusCode,
    body,
    headers
  };
};

我按照建议更改了第一行:

const AWS = require("@aws-sdk/client-s3")

并在node.js 18中运行了代码;我收到了类似的错误:

"errorType": "ReferenceError", "errorMessage": "在ES模块范围内未定义require,您可以使用import代替", "stack": [
"ReferenceError: 在ES模块范围内未定义require,您可以使用import代替", " 在 file:///var/task/index.mjs:

英文:

First of all, my apologies if this is very trivial but every solution I tried just gave errors.

In short I am new to the aws enviroment and choose a dynamodb to set up as database. I used a lamdba function to be able to batch write data from anywhere to the cloud.

It took some time but I got it all working, however by mistake I chose (or rather used the default) db location us-east-1. Now long story short for legal reasons the data should be in Europe. So I just copied everything, and migrated everything to eu-central-1.

And that's when things when sideways... The code in us-east-1 is running on node.js 16 and uses "const AWS = require("aws-sdk");"

But the same statement in eu-central-1 keeps giving errors. If I run it in node.js 16 it states this:
> errorType": "ReferenceError",
> "errorMessage": "require is not defined in ES module scope, you can use import instead",
> "stack": [
> "ReferenceError: require is not defined in ES module scope, you can use import instead",
> at file:///var/task/index.mjs:1:13",
> at ModuleJob.run (node:internal/modules/esm/module_job:193:25)",
> at async Promise.all (index 0)",
> at async ESMLoader.import (node:internal/modules/esm/loader:530:24)",
> at async _tryAwaitImport (file:///var/runtime/index.mjs:918:16)",
> at async _tryRequire (file:///var/runtime/index.mjs:967:86)",
> at async _loadUserApp (file:///var/runtime/index.mjs:991:16)",
> at async Object.UserFunction.js.module.exports.load (file:///var/runtime/index.mjs:1032:21)",
> at async start (file:///var/runtime/index.mjs:1195:23)",
> at async file:///var/runtime/index.mjs:1201:1"

And if I run it in node.js 18 (because I found out that the require statement is something added in this version)

> "errorType": "ReferenceError",
> "errorMessage": "require is not defined in ES module scope, you can use import instead",
> "stack": [
> "ReferenceError: require is not defined in ES module scope, you can use import instead",
> at file:///var/task/index.mjs:1:13",
> at ModuleJob.run (node:internal/modules/esm/module_job:194:25)"`
> ]

I tried many different syntaxes but none have solved my problem or my knowledge of the problem. When I use the suggested import statement I get errors that the aws-sdk files are not found. But I tried to install them in the same location but that did not work. Probably is this a solution that I should persue but I can't seem to find any clear information on how to succesfully attach the files (I tried to export the Lambda function and attach the aws-sdk in the folder but that gave the same errors) And more Importantly I want to know why this is occurring, because I definetly didn't install aws-sdk in the us-east-1 region and there it works, plus the require statement is defined there.

So any reading, tips, suggestion is welcome. I 'll keep this update and add the code that you need to provide help (or settings or results of proposed changes).

Here is the working Lambda code (from the us-east-1), the code is the same as in eu-central-1 except for the table name and location.

const AWS = require("aws-sdk");
const dynamo = new AWS.DynamoDB.DocumentClient();
exports.handler = async (event, context) => {
let body;
let statusCode = 200;
const headers = {
"Content-Type": "application/json"
};
try {
switch (event.routeKey) {
case "DELETE /items/{id}":
await dynamo
.delete({
TableName: "TestID",
Key: {
id: event.pathParameters.id
}
})
.promise();
body = `Deleted item ${event.pathParameters.id}`;
break;
case "GET /items/{id}":
body = await dynamo
.get({
TableName: "TestID",
Key: {
id: event.pathParameters.id
}
})
.promise();
break;
case "GET /items":
body = await dynamo.scan({ TableName: "TestID" }).promise();
break;
case "PUT /items":
let requestJSON = JSON.parse(event.body);
if (!requestJSON[0].ModuleID || !requestJSON[0].DataID) {
throw new Error("Missing required fields: ModuleID or DataID, greetings ");
}
await dynamo
.put({
TableName: "TestID",
Item: {
ModuleID: requestJSON[0].ModuleID,
DataID: requestJSON[0].DataID,
TimeStamp: requestJSON[0].TimeStamp,
ValTemp: requestJSON[0].ValTemp
}
})
.promise();
body = `Put item ${requestJSON[0].DataID}`;
break;
case "PUT /items/batch":
let requestJSONBatch = JSON.parse(event.body);
let items = requestJSONBatch.map(item => {
return {
PutRequest: {
Item: {
ModuleID: item.ModuleID,
DataID: item.DataID,
TimeStamp: item.TimeStamp,
T2: item.T2,
ValTemp: item.ValTemp
}
}
};
});
await dynamo
.batchWrite({
RequestItems: {
"TestID": items
}
})
.promise();
body = `PUT items`;
break;
default:
throw new Error(`Unsupported route: "${event.routeKey}"`);
}
} catch (err) {
statusCode = 400;
body = err.message;
} finally {
body = JSON.stringify(body);
}
return {
statusCode,
body,
headers
};
};

I followed the suggestion and changed the first line to:

const AWS = require("@aws-sdk/client-s3")

And ran the code in node.js 18 ; I get a similar error:

> "errorType": "ReferenceError", "errorMessage": "require is not defined
> in ES module scope, you can use import instead", "stack": [
> "ReferenceError: require is not defined in ES module scope, you can
> use import instead", " at file:///var/task/index.mjs:1:13", " at
> ModuleJob.run (node:internal/modules/esm/module_job:194:25)" ]

答案1

得分: 0

以下是已翻译好的内容:

解决方案,

最终问题很简单,如果你使用 Web 界面创建 Lambda 函数,你无需添加任何(常规)依赖项,比如 AWS-SDK 模块,因为亚马逊会处理它。但是,即使你只上传一个代码文件,只要上传一个 .zip 文件,这一部分就会停止。

所以我从位置 x 下载了我的工作代码,然后将我的代码上传到不同的位置,相应地更改了 API 和安全性,但不成功,因为我没有依赖项。

因此,没有 "package.json",我不理解任何建议,我能够验证的答案也没有帮助。最后,使用 aws cli(需要一些阅读和理解来设置)。然后添加 aws-sdk 并使用 aws cli 上传它。

详情:

AWS-SDK: https://github.com/aws/aws-sdk-js
在特定目录安装:

npm install aws-sdk

将 .mjs 代码文件添加到目录中
使用 7Zip 压缩目录中的所有内容:

\Program Files\7-Zip\7z" a -r awslambdav2.zip

将此 .zip 文件更新为现有函数的源代码

aws lambda update-function-code --function-name *插入函数名称* --zip-file fileb://awslambdav2.zip

完成!最后,不应使用 Web 界面部署 Lambda 函数。

英文:

The Solution,

In the end the problem was simple, if you create a lambda function using the webinterface you don't need to add any (regular) dependencies such as the AWS-SDK module, because Amazon takes care of it. However this part stops as soon as you upload a .zip file even if you don't add anything but a code file.

So I downloaded my working code from location x an uploade my code to a different location changed the API and Security accordingly but was unsuccesfull because I had no depencies.

Therefore there was no "package.json" and I didn't understand any of the suggestions and the answer I was able to verify didn't help. In the end, use the aws cli (it takes some reading and understanding to set up). And add the aws-sdk and upload this using the aws cli.

Details:

AWS-SDK: https://github.com/aws/aws-sdk-js
Instal in a specific directory:

npm install aws-sdk

Add .mjs code file to the directory
use 7Zip to zip everything in the directory:

 \Program Files\7-Zip\7z" a -r awslambdav2.zip

Update this .zip file as the source for your existing function

aws lambda update-function-code --function-name *insertFunctionName* --zip-file fileb://awslambdav2.zip

And you're done! All fixed. In the end the webinterface should not be used to deploy Lambda functions.

答案2

得分: -2

Node 18现在使用AWS SDK V3,您应相应地处理您的代码。

此答案应有助于您的导入,并使您能够在SDK V3中建立DynamoDB客户端。

使用:

import * as AWS from "@aws-sdk/client-dynamodb";

还请阅读这里

英文:

Node 18 now uses AWS SDK V3 and you should handle your code accordingly.

This answer should help with your imports and enable you to establish a DynamoDB Client in SDK V3.

Use:

import * as AWS from "@aws-sdk/client-dynamodb";

Also read here

huangapple
  • 本文由 发表于 2023年6月12日 18:01:49
  • 转载请务必保留本文链接:https://go.coder-hub.com/76455539.html
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