Abra Liquidation Bot

Rust implementation of an abracadabra liquidator

Prerequisites

This is an immature software, only use with wallet with smaller ETH amount.

make build-release

create .env from .env.example and fill the necessary endpoints. RPC_URL is the current chain websocket rpc.
launch_one.sh and launch_all.sh contains examples how to run the bot, modify and adapt at will.
each bot process are isolated instance and corresponding to one cauldron listener and liquidator using it's own parameters.
full archives nodes needs to be used to properly work

The bot needs a lot of improvements and polishing:

Everytime the bot is started, it's fetching previous blocks to build a in-memory database of user's positions. It should be cached locally and incrementaly only fetch the newer block when initialized.
Support 0x swappers
Having module so that cauldron's specific features are handled properly. For example, with GLP cauldron's it needs to use a Lens contract to resolve the best asset to burn GLP to and use it to build the 0x api request.
Support cook based liquidation, where the master contract is approved/disapproved using a signature instead of approving the master contract globally.
Better code architecture divided in module
Passing less parameters and instead having a struct accross the multiple functions
Better way to handle launching the bots
Support for better profitability checks. Current bot state is making very minor checks for profitability, like the MIN_BORROW_PART part of the configuration which ignores user positions that are inferior to the value.
Telegram/Discord notifications handling

Revise why sending a transaction using web socket fails and find a way to only use websocket or http so it's simpler to handle.
Something the gas estimate pass but the transactions fails, spending gas.
The bot can drain all your wallet ETH as it doesn't have any support for profitability checks and killswitch when something goes wrong.