Facet.sol

Access Layer: Facet.sol#

• Facet.sol acts as the base contract for all logic modules in the Garden.
• It defines the core access control rules that every module follows.
• Its primary role is to protect the system from unauthorized or unsafe actions, especially during sensitive operations.

Main idea: Restricted Interactions During Index Connection#

• When a Garden is connected to an Index, certain operations become more restrictive.
• Direct user interaction is limited during automated processes like rebalancing.
• This helps prevent:
  • Front-running (users exploiting timing for profit)
  • State inconsistencies caused by unexpected external actions

DEX Caller Restriction#

• During a rebalance, swap functions can only be executed by the Garden contract itself.
• External users or contracts are not allowed to trigger these swaps.
• This restriction ensures:
  • Controlled execution of trades
  • No external interference
  • Consistent and predictable system behavior

/// @notice Checks if the caller is the garden itself when connected to an index
function _onlyGardenCanCallDexWhenIndexConnected() internal view {
    LibDiamond.Layout storage ld = LibDiamond.layout();
    if (ld.isConnectedToIndex) {
        // Enforce Diamond self-calls only
        if (msg.sender != address(this)) {
            revert Garden_OnlyGardenCanCallDexWhenIndexConnected();
        }
    } else {
        // If not connected to an index, fallback to owner validation
        if (msg.sender != OwnershipStorage.layout().owner) {
            revert Garden_UnauthorizedCaller();
        }
    }
}