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        使用 Lambda 设置 DynamoDB 触发器

        Setup DynamoDB Trigger using Lambda(使用 Lambda 设置 DynamoDB 触发器)

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                1. 本文介绍了使用 Lambda 设置 DynamoDB 触发器的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  问题描述

                  我正在尝试使用 DynamoDB Streams 和 AWS Lambda 创建一个 DynamoDB 触发器.我进行了很多研究,但找不到任何方法来读取和处理 Java 8 中的 DynamoDB Stream 事件.我对这两种技术都是全新的,所以不知道如何使用它.

                  I'm trying to create a DynamoDB trigger using DynamoDB Streams and AWS Lambda. I researched a lot but I couldn't find any way to read and process a DynamoDB Stream event in Java 8. I'm completely new to both these technologies so don't know how to work with this.

                  本质上,我想做的是每当在表 A 中创建记录时在表 B 中创建记录.

                  Essentially, what I want to do is create a record in table B whenever a record is created in table A.

                  谁能给我指出一个用Java处理这个用例的代码或帖子?

                  Could any of you please point me to a code or post that handles this use case in Java?

                  谢谢:)

                  推荐答案

                  这段代码对我有用.您可以使用它在 Lambda 函数中接收和处理 DynamoDB 事件 -

                  This code worked for me. You can use it to receive and process DynamoDB events in a Lambda function -

                  public class Handler implements RequestHandler<DynamodbEvent, Void> {
                  
                      @Override
                      public Void handleRequest(DynamodbEvent dynamodbEvent, Context context) {
                  
                          for (DynamodbStreamRecord record : dynamodbEvent.getRecords()) {
                  
                              if (record == null) {
                                  continue;
                              }
                  
                              // Your code here
                              // Write to Table B using DynamoDB Java API
                          }
                  
                          return null;
                      }
                  }
                  

                  创建 Lambda 时,将表 A 中的流添加为事件源,一切顺利

                  When you create your Lambda, add the stream from table A as your event source, and you're good to go

                  这篇关于使用 Lambda 设置 DynamoDB 触发器的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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