feat(PCL duality): add PCL with Duality orderbook integration #438
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# Conflicts: # Cargo.lock # Cargo.toml # packages/astroport/src/lib.rs # packages/astroport_test/Cargo.toml
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The idea of contract is to reflect certain part of PCL liquidity into orders on the orderbook. Contract creates fixed amount of orders on each side (buy and sell) based on our fixed heights algorithm. This algorithm ensures that resulting price in orderbook will match the price in PCL if it was swapped through contract directly.
This contract is highly integrated with Duality dex module on Neutron. Meaning, every time someone provides/withdraw/swaps through pool it automatically closes all outstanding orders, processes fees and creates the new ones based on new pool state (both PCL params and reserves amount).
In case PCL pool is stale and doesn't receive arb trades between orderbook and pool we implemented a separate endpoint which helps to sync pool with orderbook. This endpoint may or may not be permissioned to a certain address.