javascript 我如何在 Node 中使用 Amazon 的 Dynamodb Local？
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How I can work with Amazon's Dynamodb Local in Node?
提问by danmcc
Amazon offers a local simulator for their Dynamodb productbut the examples are only in PHP.
亚马逊为其 Dynamodb 产品提供了本地模拟器，但示例仅使用 PHP 编写。
These examples mention passing the parameter "base_url" to specify that you're using a local Dynamodb, but that returns this error in Node:
这些示例提到传递参数“base_url”以指定您使用的是本地 Dynamodb，但这会在 Node 中返回此错误：
{ [UnrecognizedClientException: The security token included in the request is invalid.]
message: 'The security token included in the request is invalid.',
code: 'UnrecognizedClientException',
name: 'UnrecognizedClientException',
statusCode: 400,
retryable: false }
How do I get Dynamodb_local working in Node?
如何让 Dynamodb_local 在 Node 中工作？
回答by aaaristo
You should follow this blog postto setup your DynamoDB Local, an then you can simply use this code:
您应该按照这篇博文设置您的 DynamoDB Local，然后您可以简单地使用以下代码：
var AWS= require('aws-sdk'),
dyn= new AWS.DynamoDB({ endpoint: new AWS.Endpoint('http://localhost:8000') });
dyn.listTables(function (err, data)
{
console.log('listTables',err,data);
});
回答by Arshad
For Node please do as below:
对于节点，请执行以下操作：
const AWS = require('aws-sdk');
const AWSaccessKeyId = 'not-important';
const AWSsecretAccessKey = 'not-important';
const AWSregion = 'local';
const AWSendpoint = 'http://localhost:8000' // This is required
AWS.config.update({
accessKeyId: AWSaccessKeyId,
secretAccessKey: AWSsecretAccessKey,
region: AWSregion,
endpoint: AWSendpoint
});
Ensure that DynamodDB is running on port 8000.
确保 DynamodDB 在端口 8000 上运行。
回答by rynop
Here is how I do it, same code works local or inside AWS.
这是我的做法，相同的代码在本地或 AWS 内部工作。
Simply leverage existence of env var DYNAMO_LOCAL_ENDPT="http://localhost:8000"
简单地利用 env var 的存在 DYNAMO_LOCAL_ENDPT="http://localhost:8000"
import { DynamoDB, Endpoint } from 'aws-sdk';
const ddb = new DynamoDB({ apiVersion: '2012-08-10' });
if (process.env['DYNAMO_LOCAL_ENDPT']) {
ddb.endpoint = new Endpoint(process.env['DYNAMO_LOCAL_ENDPT']);
}
回答by carlsborg
This blog posthas an end to end example for using DynamoDB local with Node on Ubuntu, including setting up docker to run dynamoDB local in a container and sample code for calling various DDB operations.
这篇博文提供了在 Ubuntu 上使用 Node 本地 DynamoDB 的端到端示例，包括设置 docker 以在容器中本地运行 dynamoDB 以及调用各种 DDB 操作的示例代码。
