> For the complete documentation index, see [llms.txt](https://docs.fly.trade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fly.trade/developers/deprecated-magpie-contracts/magpieaggregator-diamond-proxy/bridge/bridgefacet.md). # BridgeFacet This is a Solidity contract that implements the `IBridge` interface. The contract has the following functions: ### updateStargateSettings(): updates the settings of the Stargate bridge. **Input**
FieldTypeDescription

stargateSettings


StargateSettings


struct StargateSettings {
    address routerAddress;
}
### updateWormholeBridgeSettings(): updates the settings of the Wormhole bridge. **Input**
FieldTypeDescription

wormholeBridgeSettings


WormholeBridgeSettings


struct WormholeBridgeSettings {
    address bridgeAddress;
}
The `updateStargateSettings` and `updateWormholeBridgeSettings` functions enforce that only the contract owner can call them, using the `enforceIsContractOwner` function from the LibDiamond library. ### updateCelerBridgeSettings(): It's a way to update and manage the settings associated with the Celer Bridge, and its execution is permissioned for the contract owner. **Input**
FieldTypeDescription

celerBridgeSettings


CelerBridgeSettings


struct CelerBridgeSettings {
    address messageBusAddress;
}
### addCelerChainIds(): The function is responsible for updating the contract's settings related to chain IDs. It utilizes a modular approach where logic for handling chain IDs is encapsulated in the `LibCeler` library. The ownership check at the beginning guarantees that only the contract owner can execute this function. **Input**
FieldTypeDescription

networkIds


uint16[]
An array containing identifiers for networks.

chainIds


uint64[]
An array containing chain identifiers corresponding to the networks in networkIds.
### addMagpieCelerBridgeAddress(): This function is responsible for adding Magpie Celer bridge addresses to the contract's settings, associating them with specific network IDs. **Input**
FieldTypeDescription

networkIds


uint16[]
An array containing identifiers for networks.

magpieCelerBridgeAddresses


bytes32[]
An array of bytes32 values representing Magpie Celer Bridge addresses.
### addMagpieStargateBridgeAddresses(): This function is responsible for adding the given bridge addresses to the corresponding network IDs. **Input**
FieldTypeDescription

networkIds


uint16[]
An array of identifier defined by the magpie team for each network

magpieStargateBridgeAddresses


bytes32[]
An array of magpieStargateBridge addresses for each network in the form of bytes32
### addMagpieStargateBridgeV2Address(): This function is responsible for adding the given bridge addresses to the corresponding network IDs. **Input**
FieldTypeDescription

networkIds


uint16[]
An array of identifier defined by the magpie team for each network

magpieStargateBridgeAddresses


bytes32[]
An array of magpieStargateBridge addresses for each network in the form of bytes32
### getWormholeTokenSequence(): This function takes a `uint64` parameter `tokenSequence` and returns a `uint64`. It calls the `getTokenSequence` function from the `LibWormhole` library, passing the `tokenSequence` as an argument. The purpose of this function is to retrieve and return a transformed version of the `tokenSequence` using the `LibWormhole` library. **Input**:
FieldTypeDescription

tokenSequence


uint64
The token sequence defined by magpie
**Output**: | Field | Type | Description | | ----- | ---- | ------------------------------------------ | | | | The token sequence receiver from wormhole. | ### bridgeIn(): This function takes a `BridgeInArgs` struct as a `calldata` parameter and does not return a value. It overrides a function declared in an interface or parent contract. It calls the `bridgeIn` function from the `LibBridge` library, passing the `bridgeInArgs` as an argument. **Input**:
FieldTypeDescription

bridgeInArgs


BridgeInArgs


struct BridgeInArgs {
    uint16 recipientNetworkId;
    BridgeArgs bridgeArgs;
    uint256 amount;
    address toAssetAddress;
    TransferKey transferKey;
}
### bridgeOut(): This function takes a `BridgeOutArgs` struct as a `calldata` parameter and returns a `uint256` value. It overrides a function declared in an interface or parent contract. It calls the `bridgeOut` function from the `LibBridge` library, passing the `bridgeOutArgs` as an argument. **Input**:
FieldTypeDescription

bridgeOutArgs


BridgeOutArgs


struct BridgeOutArgs {
    BridgeArgs bridgeArgs;
    Transaction transaction;
    TransferKey transferKey;
}