- For each order, it requests the best trading route on paraswap and decomposes it into subpath trades
- From the all the subpath trades, it identifies possible cows on the subpath and trades the cows internally against each other.
- Then all the left over volume from the subtrades that don’t fit into a cow is settled against 0x.
- Try to remove all subpath trades from zeroEx with buffer trades In between, it can fail on many steps, e.g. if the subtrades build a ring, it can’t deal with it.
Start the server by running:
cargo run
then post requests to it like:
curl -vX POST "http://127.0.0.1:8000/solve" -H "accept: application/json" -H "Content-Type: application/json" --data "@$PWD/data/test.json"
Alternatively, the code can also be run via docker:
Running api
docker build -t cowdexsolver -f docker/Dockerfile.binary .
docker run -p8000:8000 -ti cowdexsolver cowdexsolver --bind-address 0.0.0.0:8000
In order to see how the solutions would be submitted, which exact settlements would be build with the provided solutions and in order to investigate the settlements-simulations in tenderly, you can follow the following steps:
Run the following commands to get the cowswap driver repo
git clone git@github.com:gnosis/gp-v2-services.git
cd gp-v2-services
and then start the driver by:
export INFURA_KEY=<your infura key>
cargo run -p solver -- --orderbook-url https://protocol-mainnet.gnosis.io \
--node-url "https://mainnet.infura.io/v3/$INFURA_KEY" \
--cow-dex-ag-solver-url "http://127.0.0.1:8000" \
--solver-account 0xa6DDBD0dE6B310819b49f680F65871beE85f517e \
--solvers CowDexAg \
--transaction-strategy DryRun
This will start the driver.
Then you want to start the cowDexAg solver by running from this repo:
cargo run
Now, the driver should supply current open orders from production to the cowDexAg solver and the solver will find a solution and returning it back to the driver.