Скачать или смотреть How to Create a Zip File In Memory and Store It in AWS S3 Using TypeScript

Learn how to easily create a zip file in memory with TypeScript and upload it to an AWS S3 bucket. Follow our step-by-step guide for seamless integration!
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This video is based on the question https://stackoverflow.com/q/71927587/ asked by the user 'Guy Hagemans' ( https://stackoverflow.com/u/3992665/ ) and on the answer https://stackoverflow.com/a/71939642/ provided by the user 'Guy Hagemans' ( https://stackoverflow.com/u/3992665/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Creating a Zip File in Memory and Storing It in AWS S3

In the world of software development, it's not uncommon to find yourself needing to create files dynamically and store them in cloud storage. One such task might involve generating a zip file in memory and then uploading it directly to an AWS S3 bucket. If you've found yourself grappling with this challenge using TypeScript, you're in the right place! In this guide, we'll walk through the problem and provide a clear, step-by-step solution.

The Problem

Recently, a developer faced an issue where they were unable to successfully store a zip file created from a plain text CSV string in an AWS S3 bucket. Despite creating the zip file in memory using the AdmZip library, the uploaded file was coming out unreadable once downloaded. Here’s the code snippet that was used:

[[See Video to Reveal this Text or Code Snippet]]

In this example, the developer faced issues when using zipData.toString('binary'), which led to the zip file being corrupted upon upload.

The Solution

Step 1: Create the Zip File

To resolve the issue, we need to modify the way we handle zipData. Instead of converting it to a string in binary format, we can directly send the buffer to the S3 bucket. Here’s how you can do it:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Prepare the S3 Upload Command

Next, we need to upload this buffer to S3 using the PutObjectCommand. Ensure you configure your S3 bucket and set the required parameters. Here's a comprehensive command setup:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Upload the File

Finally, you can execute the command to upload the zip file into your designated S3 bucket, like so:

[[See Video to Reveal this Text or Code Snippet]]

This command sends the buffer directly to the S3 bucket, ensuring that the zip file remains intact and is readable upon download.

Conclusion

Creating a zip file in memory and uploading it to AWS S3 using TypeScript might seem daunting at first, but with the right approach, it can be quite straightforward. Remember, the key to resolving the initial issue was avoiding the conversion of the buffer to a string and instead directly using the buffer in the S3 upload command. By following the steps outlined above, you can confidently create zip files in memory and manage files in your AWS S3 buckets effectively.

Now that you have a working solution, feel free to incorporate this method in your own projects, and happy coding!