PeridotHubHandler

The PeridotHubHandler is the central cross-chain message receiver on the hub chain, responsible for processing all supply and borrow requests from spoke chains and coordinating with pToken contracts.

🛠️ Key Functions & Parameters

✅ _execute(bytes32 commandId, string calldata sourceChain, string calldata sourceAddress, bytes calldata payload)

Processes cross-chain borrow requests (messages without tokens).

Parameters:

  • commandId: Unique identifier for the cross-chain command

  • sourceChain: Name of the originating spoke chain

  • sourceAddress: Address of the spoke contract that sent the message

  • payload: Encoded data containing (user, pTokenAddress, borrowAmount)

Process:

  1. Validates the message comes from an authorized spoke contract

  2. Calls borrowFor() on the specified pToken contract

  3. Sends borrowed tokens back to user on the spoke chain via Axelar

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

Processes cross-chain supply requests (messages with tokens).

Parameters:

  • commandId: Unique identifier for the cross-chain command

  • sourceChain: Name of the originating spoke chain

  • sourceAddress: Address of the spoke contract that sent the message

  • payload: Encoded user address

  • tokenSymbol: Symbol of the token being supplied (e.g., "USDC")

  • amount: Amount of tokens being supplied

Process:

  1. Validates the message comes from an authorized spoke contract

  2. Maps token symbol to local pToken contract

  3. Calls mintFor() on the pToken contract to mint pTokens for the user

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