Cloudflare Worker for Implementing Linktree Style Page

This application is an instance of a Cloudflare Worker which allows you to deploy a serverless JavaScript application on their global CDN. The worker here was started using the Wrangler CLI for Cloudflare workers to generate a template. The Worker in this project is used to implement a Linktree style page, which allows brands, media platforms, and influencers to share important links with their audiences.

An example implementation can be found deployed at https://linktree.justinlowen.workers.dev/.

The worker retrieves a HTML template from the https://static-links-page.signalnerve.workers.dev worker endpoint. Then Cloudflare's HTMLRewriter class is used to transform the page, personalizing it for the user. This Worker implementation returns an example user for all paths (except /links), but it could be extended by connecting to a user database as well as a database for their relevant links.

The /links path will return a JSON response containing the links information for the example user. This could represent accessing data from a remote source outside the worker, but in this case it is fulfilling a project requirement.

Getting Started

To deploy your own version of this project, follow these steps.

Prerequisites

Getting Started with Cloudflare Workers

1. Sign up for a Workers account
2. Install node package manager
3. Install the Workers CLI, Wrangler When you have npm installed: npm install -g @cloudflare/wrangler

Setup

1. Clone this repo git clone https://github.com/JLowe-N/CF-Workers-Linktree.git
2. Configure with your Workers account credentials. wrangler config
3. Update the .toml file with you account_id and you can update worker "name" field as desired.
4. The template and code is already complete, it can be previewed in terminal by navigating to the location of index.js and using the following commands: For Localhost testing wrangler dev For a temporary test deployment wrangler preview --watch
5. Update code and variables as you see fit to create your own linktree style page.
6. Deploy to your Workers account using: wrangler publish

Usage and Examples

The deployed version of this site fulfills several requirements for this project.

1. Returns Links as a JSON Response when a GET request is made to /links

2. Returns a Linktree style page when a GET request is made to any other path.

   • Retrieves static HTML template from https://static-links-page.signalnerve.workers.dev
   • Uses the links provided at /links
   • HTMLRewriter class is used to add these links to the template
   • Additional changes to styles including avatar and name heading
   • Returns the transformed page from the worker

Note: It seems Workers in the same zone cannot call one another as discussed here. This is a sensible restriction because a Worker calling another Worker in the same zone could create a vulnerability.

Normally, we would be making a call to get the links from a remote resource, but for this example I used a variable internal to the worker to provide the links data.

3. Extra Credit

   • Social Icons added
   • Title Field Updated
   • Update background The static HTML template provided uses CSS Tailwind. Several classes had to be updated to accommodate the page style as well as the fallback background color. A background image was also added to further customize the page.

4. Systems Profiler Assignment - See Repo/Files

License

My contributions are distributed under the MIT License. See LICENSE_MIT for more information.

Contact

Justin Lowen:

• https://jlowe-n.github.io/
• [email protected]

Project Link: https://github.com/JLowe-N/CF-Workers-Linktree

Acknowledgements

• Cloudflare
• Cloudflare Workers