UnrecognizedClientException”、“errorMessage”：“在本地测试lambda函数时，请求中包含的安全令牌无效

Question

我试图使用aws sam在本地调用lambda函数进行测试。该函数从Dynamodb表中读取一个项。我已经旋转了一个本地Dynamodb容器，在那里创建了所需的表。

运行下面的命令来创建一个本地Dynamodb容器。

1. docker网络创建lambda本地

然后使用下面的命令，我能够验证所有的工作都很好，就本地dynamodb而言。

超文本传输协议：//localhsot： 8000

但是，当我尝试运行下面的命令时，我得到了一个错误。

sam local invoke <lambdaFunctionName> --docker-network lambda-local

我得到的错误-

START RequestId: 043b493d-8457-43f1-8eeb-dc641ac3816f Version: $LATEST
2021-10-27T08:17:00.778Z        043b493d-8457-43f1-8eeb-dc641ac3816f    ERROR   Invoke Error    
{"errorType":"UnrecognizedClientException","errorMessage":"The security token included in the request is invalid",
"code":"UnrecognizedClientException","message":"The security token included in the request is invalid","time":"2021-10-27T08:17:00.775Z","requestId":"NG2U0AEVI320VL5PLPTK8H3G63VV4KQNSO5AEMVJF66Q9ASUAAJG","statusCode":400,"retryable":false,"retryDelay":46.55385931289337,"stack":["UnrecognizedClientException: The security token included in the request is invalid","    at Request.extractError (/var/runtime/node_modules/aws-sdk/lib/protocol/json.js:52:27)","    at Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:106:20)","    at Request.emit (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:78:10)","    at Request.emit (/var/runtime/node_modules/aws-sdk/lib/request.js:688:14)","    at Request.transition (/var/runtime/node_modules/aws-sdk/lib/request.js:22:10)","    at AcceptorStateMachine.runTo (/var/runtime/node_modules/aws-sdk/lib/state_machine.js:14:12)","    at /var/runtime/node_modules/aws-sdk/lib/state_machine.js:26:10","    at Request.<anonymous> (/var/runtime/node_modules/aws-sdk/lib/request.js:38:9)","    at Request.<anonymous> (/var/runtime/node_modules/aws-sdk/lib/request.js:690:12)","    at Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:116:18)"]}
END RequestId: 043b493d-8457-43f1-8eeb-dc641ac3816f

我错过了什么？使用sam在本地调用lambda函数并将其连接到本地运行的dynamodb容器还需要其他步骤吗？

lambda码

var AWS = require('aws-sdk');
AWS.config.update({region: 'us-east-1'});

exports.lambdaHandler = async (event, context) => {
    const dynamoDB = new AWS.DynamoDB.DocumentClient();
    const params = {
        TableName: 'employees',
        Key: {
            name: "naxi"
        }
    };

    const result = await dynamoDB.get(params).promise();
    if (result.Item) {
        return result.Item;
    } else {
        return { error: 'Task not found.' };
    }
};

Answer 1

您需要使用AWS CLI在本地计算机中配置访问和密钥以及区域。引发此错误的原因是没有正确的访问权限和密钥，或者没有对其进行配置。

参考以下链接：https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-quickstart.html