User-Defined Metadata

描述

贡献者指南

技术栈

javascriptaws

领域

backendcloud

议题类型

feature

难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。

3

预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。

half day

活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。

stale

清晰度议题是否清楚说明期望改动、验收标准和下一步。

needs investigation

前置要求

JavaScript basicsAWS LambdaS3 metadata

新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。

35

研究方向

Review the Lambda function handler (likely index.js) to understand how images are processed and uploaded to S3. The current implementation likely reads the source image, resizes it, and writes to a destination bucket without preserving the original user defined metadata. To fix, modify the S3 putObject call to include the metadata from the source object, which can be retrieved from the Lambda event or by calling getObjectAttributes. Ensure that only allowed metadata headers are copied. See AWS S3 SDK documentation for copying object metadata.