Node Execute Function

The execute function enables valid Routers to make arbitrary contract calls on behalf of the Node, allowing for complex DeFi interactions while maintaining security controls.

function execute(address target, bytes calldata data)
    external
    onlyRouter
    onlyWhenRebalancing
    returns (bytes memory)
{
    if (target == address(0)) revert ErrorsLib.ZeroAddress();
    bytes memory result = target.functionCall(data);
    emit EventsLib.Execute(target, data, result);
    return result;
}

Security Controls

• Only whitelisted routers can call execute

• Only works during rebalance window

• Target address cannot be zero

• Emits event with full call data and result

Common Usage

// Example: Approve spending in router
function _safeApprove(address node, address token, address spender, uint256 amount) internal {
    bytes memory data = INode(node).execute(
        token, 
        abi.encodeCall(IERC20.approve, (spender, amount))
    );
    if (!(data.length == 0 || abi.decode(data, (bool)))) revert ErrorsLib.SafeApproveFailed();
}

Use Cases

• Token approvals

• Vault deposits/withdrawals

• Protocol-specific interactions

• Multi-step DeFi operations

All interactions must be implemented in the router contract, maintaining security through the whitelisting system.