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如何序列化和反序列化DynamoDB Stream 记录object

[英]How to serialize and deserialize DynamoDB Stream Record object

原文 2020-01-31 13:16:02 1 2 amazon-dynamodb/ amazon-dynamodb-streams

We are planning to use DynamoDB Stream, part of stream processing we need com.amazonaws.services.dynamodbv2.model.Record object to be serialized and deserialized.我们计划使用DynamoDB Stream，部分stream处理我们需要com.amazonaws.services.dynamodbv2.model.Record object进行序列化和反序列化。 I know we can do java ObjectOutputStream and ObjectInputStream, but this does not suffice our needs.我知道我们可以做 java ObjectOutputStream 和 ObjectInputStream，但这并不能满足我们的需求。

The need is we have to manage versions in deserializer and serializer because if there is a change in Record structure or new version, we can not upgrade all the services which use deserializer to upgrade at one shot.需要的是我们必须在反序列化器和序列化器中管理版本，因为如果 Record 结构或新版本发生变化，我们无法一次性升级所有使用反序列化器升级的服务。

Is there a way to do this?有没有办法做到这一点？

2 个解决方案

I think I found a solution.我想我找到了解决方案。

Serialize : new RecordAdapter(record).getData序列化：新的 RecordAdapter(record).getData

Deserialize: new RecordObjectMapper().readValue(new String(bytes), Record.class)反序列化：new RecordObjectMapper().readValue(new String(bytes), Record.class)

Thank you, Jason谢谢你，杰森

For anyone coming back to this in 2022, the classes are here: https://javadoc.io/static/com.amazonaws/dynamodb-streams-kinesis-adapter/1.5.0/index.html?com/amazonaws/services/dynamodbv2/streamsadapter/model/RecordAdapter.html对于 2022 年回到这里的任何人，课程在这里： https://javadoc.io/static/com.amazonaws/dynamodb-streams-kinesis-adapter/1.5.0/index.html?com/amazonaws/services/ dynamodbv2/streamsadapter/模型/RecordAdapter.html

in the dynamodb-streams-kinesis-adapter library在dynamodb-streams-kinesis-adapter库中

project is here: https://github.com/awslabs/dynamodb-streams-kinesis-adapter项目在这里： https://github.com/awslabs/dynamodb-streams-kinesis-adapter