eatt

TODO:

• Implement Broker mock in JS
• Implement POST /claim-free-share in JS with assumption that we have shares
• Implement background Buyer in JS

To run:

git clone https://github.com/masim05/eatt.git
cd eatt
npm i
# run tests
npm test
# start background worker
npm run bg | pino-pretty
# start HTTP API in another terminal
npm start | pino-pretty
# to cleanup local file storage
npm run cleanup

HTTP API:

curl -XPOST -H 'Content-Type: application/json' -d '{"claimedBy":"AAA"}' localhost:3000/claim-free-share

Description.

The project consists of two main parts: API web server and background worker. The worker acquires available shares keeping proper price distribution. Share acquisition may take quite a long time because it checks share prices in the loop, so I decided to move it in background.

The project uses file storage.json as a storage.

Environment variables

In order to control budget spent on reward shares the worker buys upto MAX_SHARES_BUFFER shares.

In order to control time of one acquisition iteration the worker buys upto MAX_SHARES_PER_ITERATION shares at once.

INTERVAL sets time in ms between two acquisition iterations.

MIN_SHARE_PRICE and MAX_SHARE_PRICE control possible price range.

If you run

MIN_SHARE_PRICE=350 MAX_SHARE_PRICE=15000 MAX_SHARES_BUFFER=200 MAX_SHARES_PER_ITERATION=50 INTERVAL=5000 npm run bg

in about a minute storage.json will have 200 shares with proper distribution.