Cloudx Go challenge

Howdy 👋 We are glad you made it!

We are hunting for high performance Go(lang) developers, mindful of architecture, data structures, performance and good engineering work — the kind of beast that can optimize for both speed and resource optimization.

You are proficient in Go (and event better, have some C / C++ background), and interested in joining a high-tech startup building solutions for other developers in hyper-scale distributed environments... this might be just for you!

The challenge

Setup

Clone this project, it contains a docker-compose file. It already has a service from which you will receive messages to complete this challenge.

Challenge

Write a little message aggregator service (wsclient) that:

• Connects via websocket to wsserver (provided). On connection, the server will send you:
  1. A list of parent / child associations (with uuid's)
  2. Messages representing the status of communications between services, where the source and destination attributes are UUID's corresponding to a child.
  3. Every now and then it will send a new list of parent/child associations (it's an update not a replacement).
• The client you write should:
  • every 1 minute deliver back to the server (through the same connection) a count() aggregation of the communications sent during the last minute with {from,to, count} fields grouped by parent UUID

Message types

ParentChildAssociation [{"parent":"36de4bf4-0293-4567-b009-75c4bc66a64d","child":"4b68f084-c3f1-4b7d-860d-7c68bbbbaa51"}, ...]

Message {"source":"e7924178-0132-4730-9c79-89fed571567f","destination":"f3f83156-2ad0-45fa-938f-591e477a1743","method":"GET","path":"/list","httpStatus":400}

Client response [{"source":"36de4bf4-0293-4567-b009-75c4bc66a64d","destination":"53faa05f-d62e-40e2-b1fc-70f4cab657bf", "count":2}]

Where source and destination for the client response are parent ids not children

Considerations

Do consider this is for us to see the way you think and the quality of your code. Think of it as your application letter.

We will be evaluating program architecture, data structures, synchronization, resiliency, resource usage and performance strategies.

Delivery

Zip the solution and send it (or a download link) to cloudx contact