AWS JS SDK V3（Lambda 模块） - 无法连接到实例元数据服务

Question

我以前使用多合一的aws-sdknpm 模块 ( https://www.npmjs.com/package/aws-sdk ) 来调用 AWS Lambda 函数，为此，以下代码运行良好：

        //Some code to get "credentials"
        ...
        const AWS = require('aws-sdk');
        const lambda = new AWS.Lambda({
            accessKeyId: credentials.accessKeyId,
            secretAccessKey: credentials.secretAccessKey,
            region: Config.REGION
        });
        lambda.invoke(pullParams, (err, data) =>
            //I would do something with data
        );
        ...

现在，从https://github.com/aws/aws-sdk-js-v3得到提示，我希望使用模块化@aws-sdk/client-lambda-node，因为它是我项目中唯一需要的类。因此，我已经更改了我的代码（如此处所建议的：https : //github.com/aws/aws-sdk-js-v3/tree/master/packages/client-lambda-node#usage），如下所示：

        import * as AWS from "@aws-sdk/client-lambda-node/Lambda";
        /*
          I believe there is a typo in the form of 
          "
           import * as AWS from "@aws-sdk/@aws-sdk/client-lambda-node/Lambda";
          "
          at the original page
        */
        ...
        //Some code to get the same "credentials" as above
        const lambda = new AWS.Lambda({
            accessKeyId: credentials.accessKeyId,
            secretAccessKey: credentials.secretAccessKey,
            region: Config.REGION
        });
        lambda.invokeAsync(pullParams, (err, data) =>
            //I want to do something with err / data
        );
        ...

就其价值而言，这是在 ReactJS 应用程序中（尽管我确定那不相关）。0.1.0-preview.5在浏览器中使用版本尝试上面的代码（它之前工作的地方）永远给了我

1. http://169.254.169.254/latest/meta-data/iam/security-credentials/ net::ERR_CONNECTION_TIMED_OUT
2. Error: Unable to connect to instance metadata service （我猜与（1）有关）

库使用不稳定，还是我做错了什么

Answer 1

您必须使用 key 传递您的凭据credentials。喜欢：

const lambda = new AWS.Lambda({
    credentials: {
        accessKeyId: credentials.accessKeyId,
        secretAccessKey: credentials.secretAccessKey,
    },
    region: Config.REGION
});

或者：

const lambda = new AWS.Lambda({
    credentials,
    region: Config.REGION
});