LidoStrategyFactory

Git Source

Inherits: BaseStrategyFactory

Title: LidoStrategyFactory

Author: Golem Foundation

Factory for deploying LidoStrategy instances with deterministic addresses

Uses CREATE2 for predictable deployment addresses based on parameters \n * DEPLOYMENT:\n * - Hardcoded to wstETH on Ethereum mainnet\n * - Parameters hashed to prevent duplicate deployments\n * - Each deployer can create multiple strategies with different params\n * \n * GAS COST:\n * - Strategy deployment: ~3-4M gas\n * - Includes full contract deployment (not a proxy)\n

Note: security-contact: [email protected]

State Variables

WSTETH

wstETH token address on Ethereum mainnet

Lido's wrapped staked ETH (non-rebasing wrapper for stETH)

address public constant WSTETH = 0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0

Functions

createStrategy

Deploys a new LidoStrategy instance

Uses CREATE2 for deterministic deployment PARAMETERS HASHED FOR SALT: All parameters combined determine unique address Same parameters = same address (prevents duplicates) PROCESS:

1. Hash all parameters for salt generation
2. Encode bytecode with constructor args
3. Deploy via CREATE2 (reverts if duplicate)
4. Emit StrategyDeploy event
5. Record deployment for tracking

function createStrategy(
    string memory _name,
    string memory _symbol,
    address _management,
    address _keeper,
    address _emergencyAdmin,
    address _donationAddress,
    bool _enableBurning,
    address _tokenizedStrategyAddress
) external returns (address strategyAddress);

Parameters

Name	Type	Description
_name	string	Strategy share token name
_symbol	string	Strategy share token symbol
_management	address	Management address (can update params)
_keeper	address	Keeper address (calls report)
_emergencyAdmin	address	Emergency admin address
_donationAddress	address	Dragon router address (receives profit shares)
_enableBurning	bool	True to enable dragon loss protection
_tokenizedStrategyAddress	address	TokenizedStrategy implementation address

Returns

Name	Type	Description
strategyAddress	address	Deployed LidoStrategy address

computeStrategyAddress

Compute the deterministic address where a strategy will be deployed

Must be implemented by child factories using their own bytecode

function computeStrategyAddress(
    address _vault,
    address _asset,
    string memory _name,
    string memory _symbol,
    address _management,
    address _keeper,
    address _emergencyAdmin,
    address _donationAddress,
    bool _enableBurning,
    address _tokenizedStrategyAddress,
    address _deployer
) public view override returns (address);

Parameters

Name	Type	Description
_vault	address	Vault address (e.g., Yearn vault, or factory constant for hardcoded vaults)
_asset	address	Underlying asset address (or factory constant for hardcoded assets)
_name	string	Strategy share token name
_symbol	string	Strategy share token symbol
_management	address	Management address
_keeper	address	Keeper address
_emergencyAdmin	address	Emergency admin address
_donationAddress	address	Donation address
_enableBurning	bool	Enable burning flag
_tokenizedStrategyAddress	address	TokenizedStrategy implementation
_deployer	address	Address that will deploy the strategy

Returns

Name	Type	Description
<none>	address	Predicted strategy address

Events

StrategyDeploy

Emitted when a new LidoStrategy is deployed

event StrategyDeploy(
    address indexed deployer,
    address indexed donationAddress,
    address indexed strategyAddress,
    string vaultTokenName
);

Parameters

Name	Type	Description
deployer	address	Address that deployed the strategy
donationAddress	address	Dragon router address that receives profit shares
strategyAddress	address	Deployed strategy address
vaultTokenName	string	Strategy share token name