Formed in 2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of history and digital heritage. The group is 100% composed of volunteers and interested parties, and has expanded into a large amount of related projects for saving online and digital history.
This project shows how to use Lambda functions to get a presigned S3 URL, as well as connect and add data to a MongoDB server. The base app is a simple React project used to send data to the functions, update the image file, and display the changed Data.
The functions are in /src/lambda and below are short descriptions on what they do:
get-upload-url.js
This function uses the Amazon S3 SDK to get a presigned URL that's valid for 5 minutes. This URL is returned to the frontend along with the public CloudFront URL for the file. The presigned URL is generated with a key that's a combination of a UUIDv4 + filename to provide unique URL's for each file, even if they have the same file-name.
post-user-details.js
This function takes a JSON payload from the frontend and uses it to update or create documents in MongoDB.
get-user-details.js
This function takes a JSON payload that includes the user's Identity ID and uses it to find the document containing that user's details, then return it to the frontend client.
validate-user.go
This function is triggered by Netlify Identity for each signup and validates the e-mail of the user, and assigns the netlifriend role.