Union

Intro

This is a change to the protocol, and therefore will go through the UIP process.

Motivation

Currently, all unlent DAI in Union on Arbitrum is stored in a puretoken DAI adapter. Now that aave V3 has been deployed to Arbitrum, an adapter can be written to support depositing a portion of deposited DAI in aave V3 to earn interest.

Proposal / Solution

Create an AssetManager Adapter that works with Aave V3 to deposit a portion of unlent DAI to Aave V3 on Arbitrum to earn interest and rewards.

Main functions:

• deposit() - deposit DAI in AssetManager to Aave to earn interest.
• withdraw() - withdraw DAI from Aave and move to AssetManager.
• claimRewards() - get the rewarded Aave token.

Parameters

• Set AaveV3Adapter floor to 10,000 DAI
• Set AaveV3Adapter ceiling to 50,000 DAI

Defining Success

Be able to deposit to / withdraw from Aave, and be able to claim rewards token from Aave on Arbitrum.

Backwards Compatibility

No issues with backward compatibility for this proposal.

Test Cases

Tests and simulations can be found here: Link to PR

Implementation

Before creating the proposal:

• Create and deploy AaveV3Adapter on Arbitrum
• Set AaveV3Adapter floor to 10,000 DAI
• Set AaveV3Adapter ceiling to 50,000 DAI
• Set AaveV3Adapter mapTokenToAToken

In the proposal:

• Call AssetManager.addAdapter() to add AaveV3Adapter.