PeridotSpoke

The PeridotSpoke contract enables users on spoke chains to interact with the Peridot protocol on the hub chain, handling cross-chain supply and borrow operations through Axelar GMP.

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🛠️ Key Functions & Parameters

✅ supplyToPeridot(string calldata assetSymbol, uint256 amount) payable

Allows users to supply assets to the hub chain lending pools from a spoke chain.

Parameters:

• assetSymbol: Symbol of the asset to supply (e.g., "USDC", "WETH")

• amount: Amount of the asset to supply

• msg.value: Native gas payment for cross-chain execution

Process:

1. Transfers tokens from user to the spoke contract

2. Pays gas for cross-chain execution via Axelar Gas Service

3. Sends tokens and user data to hub via Axelar Gateway

4. Hub mints pTokens for the user on the hub chain

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✅ borrowFromPeridot(address pTokenAddress, uint256 borrowAmount) payable

Enables users to borrow assets from hub chain pools, receiving them on the spoke chain.

Parameters:

• pTokenAddress: Address of the pToken contract on the hub chain to borrow from

• borrowAmount: Amount of underlying asset to borrow

• msg.value: Native gas payment for cross-chain execution

Process:

1. Pays gas for cross-chain message execution

2. Sends borrow request to hub handler

3. Hub processes borrow and sends tokens back to user on spoke chain

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✅ _executeWithToken(bytes32 commandId, string calldata sourceChain, string calldata sourceAddress, bytes calldata payload, string calldata tokenSymbol, uint256 amount)

Receives borrowed tokens sent back from the hub chain.

Parameters:

• sourceChain: Should match the configured hub chain name

• sourceAddress: Should match the configured hub contract address

• payload: Contains the user address who should receive the tokens

• tokenSymbol: Symbol of the borrowed token

• amount: Amount of tokens being received

Process:

1. Validates message comes from the authorized hub contract

2. Transfers received tokens to the specified user

3. Emits event for monitoring