SiloRepository

SiloRepository
SiloRepository handles the creation and configuration of Silos.
Stores configuration for each asset in each silo. Each asset in each Silo starts with a default config can later be changed by the contract owner. Stores registry of Factory contracts that deploy different versions of Silos. It is possible to have multiple versions/implementations of Silo and use different versions for different tokens. For example, one version can be used for UNI (ERC20) and the other can be used for UniV3LP tokens (ERC721). Manages bridge assets. Each Silo can have 1 or more bridge assets. New Silos are created with all currently active bridge assets. Silos that are already developed must synchronize bridge assets. Sync can be done by anyone, function has public access. Is a single source of truth for other contract addresses.
Methods
acceptOwnership
function acceptOwnership() external nonpayable
Transfers ownership of the contract to a pending owner Can only be called by the pending owner.
addBridgeAsset
function addBridgeAsset(address _newBridgeAsset) external nonpayable
Adds new bridge asset
New bridge asset must be unique. Duplicates in bridge assets are not allowed. It's possible to add bridge asset that has been removed in the past. Note that all Silos must be synced manually. Callable only by owner.
Parameters
Name
Type
Description
_newBridgeAsset
address
bridge asset address
assetConfigs
function assetConfigs(address, address) external view returns (uint64 maxLoanToValue, uint64 liquidationThreshold, contract IInterestRateModel interestRateModel)
maps silo => asset => config
Parameters
Name
Type
Description
_0
address
undefined
_1
address
undefined
Returns
Name
Type
Description
maxLoanToValue
uint64
undefined
liquidationThreshold
uint64
undefined
interestRateModel
contract IInterestRateModel
undefined
bridgePool
function bridgePool() external view returns (address)
Silo for bridge asset. We can have only one bridge pool
Returns
Name
Type
Description
_0
address
undefined
defaultAssetConfig
function defaultAssetConfig() external view returns (uint64 maxLoanToValue, uint64 liquidationThreshold, contract IInterestRateModel interestRateModel)
Default values for AssetConfig. Used if values are not configured manually.
Returns
Name
Type
Description
maxLoanToValue
uint64
undefined
liquidationThreshold
uint64
undefined
interestRateModel
contract IInterestRateModel
undefined
ensureCanCreateSiloFor
function ensureCanCreateSiloFor(address _asset, bool _assetIsABridge) external view
checks all conditions for new silo creation and throws when not possible to create
Parameters
Name
Type
Description
_asset
address
address of asset for which you want to create silo
_assetIsABridge
bool
bool TRUE when _asset is bridge asset, FALSE when it is not
entryFee
function entryFee() external view returns (uint256)
Get protocol fee for opening a borrow position
Returns
Name
Type
Description
_0
uint256
fee in precision points (BaseSilo.PRECISION_DECIMALS() == 100%)
fees
function fees() external view returns (uint64 entryFee, uint64 protocolShareFee, uint64 protocolLiquidationFee)
Returns
Name
Type
Description
entryFee
uint64
undefined
protocolShareFee
uint64
undefined
protocolLiquidationFee
uint64
undefined
getBridgeAssets
function getBridgeAssets() external view returns (address[])
Get current bridge assets
Keep in mind that not all Silos may be synced with current bridge assets so it's possbile that some assets in that list are not part of given Silo.
Returns
Name
Type
Description
_0
address[]
address array of bridge assets
getInterestRateModel
function getInterestRateModel(address _silo, address _asset) external view returns (contract IInterestRateModel model)
Get Interest Rate Model address for asset in given Silo
If dedicated config is not set, method returns default config
Parameters
Name
Type
Description
_silo
address
address of Silo
_asset
address
address of an asset
Returns
Name
Type
Description
model
contract IInterestRateModel
address of interest rate model
getLiquidationThreshold
function getLiquidationThreshold(address _silo, address _asset) external view returns (uint256)
Get liquidation threshold for asset in given Silo
If dedicated config is not set, method returns default config
Parameters
Name
Type
Description
_silo
address
address of Silo
_asset
address
address of an asset
Returns
Name
Type
Description
_0
uint256
liquidation threshold in precision points (BaseSilo.PRECISION_DECIMALS())
getMaxSiloDeposits
function getMaxSiloDeposits(address _silo, address _asset) external view returns (uint256)
Gets deposit limit for Silo
Parameters
Name
Type
Description
_silo
address
Silo address for which to set limit
_asset
address
Silo asset for which to set limit
Returns
Name
Type
Description
_0
uint256
deposit limit for Silo
getMaximumLTV
function getMaximumLTV(address _silo, address _asset) external view returns (uint256)
Get maximum LTV for asset in given Silo
If dedicated config is not set, method returns default config
Parameters
Name
Type
Description
_silo
address
address of Silo
_asset
address
address of an asset
Returns
Name
Type
Description
_0
uint256
maximum LTV in precision points (BaseSilo.PRECISION_DECIMALS())
getNotificationReceiver
function getNotificationReceiver(address) external view returns (contract INotificationReceiver)
Maps Silo address to incentive contract that will distribute rewards for that Silo
Parameters
Name
Type
Description
_0
address
undefined
Returns
Name
Type
Description
_0
contract INotificationReceiver
undefined
getRemovedBridgeAssets
function getRemovedBridgeAssets() external view returns (address[])
Get removed bridge assets
Keep in mind that not all Silos may be synced with bridge assets so it's possbile that some assets in that list are still part of given Silo.
Returns
Name
Type
Description
_0
address[]
address array of bridge assets
getSilo
function getSilo(address) external view returns (address)
maps token address to silo address, asset => silo
Parameters
Name
Type
Description
_0
address
undefined
Returns
Name
Type
Description
_0
address
undefined
isPaused
function isPaused() external view returns (bool globalPause)
Returns
Name
Type
Description
globalPause
bool
undefined
isSilo
function isSilo(address _silo) external view returns (bool)
Check if contract address is a Silo deployment
Parameters
Name
Type
Description
_silo
address
address of expected Silo
Returns
Name
Type
Description
_0
bool
true if address is Silo deployment, otherwise false
isSiloPaused
function isSiloPaused(address _silo, address _asset) external view returns (bool)
Check given asset in a Silo is paused
Parameters
Name
Type
Description
_silo
address
address of Silo
_asset
address
address of an asset
Returns
Name
Type
Description
_0
bool
true if given asset in a Silo is paused, otherwise false
maxLiquidity
function maxLiquidity() external view returns (bool globalToggle, uint256 defaultMaxLiquidity)
Returns
Name
Type
Description
globalToggle
bool
undefined
defaultMaxLiquidity
uint256
undefined
newSilo
function newSilo(address _siloAsset, uint128 _siloVersion, bytes _siloData) external nonpayable
use this method only when off-chain verification is OFF
Silo does NOT support rebase and deflationary tokens
Parameters
Name
Type
Description
_siloAsset
address
silo asset
_siloVersion
uint128
version of silo implementation
_siloData
bytes
(optional) data that may be needed during silo creation
owner
function owner() external view returns (address)
Get owner role address of Repository
Returns
Name
Type
Description
_0
address
owner role address
pendingOwner
function pendingOwner() external view returns (address)
Returns the address of the pending owner.
Returns
Name
Type
Description
_0
address
undefined
priceProvidersRepository
function priceProvidersRepository() external view returns (contract IPriceProvidersRepository)
PriceProvidersRepository contract that manages ProceProviders implementations and is an entry point for reading prices for Silos.
Returns
Name
Type
Description
_0
contract IPriceProvidersRepository
undefined
protocolLiquidationFee
function protocolLiquidationFee() external view returns (uint256)
Get protocol liquidation fee
Returns
Name
Type
Description
_0
uint256
protocol liquidation fee in precision points (BaseSilo.PRECISION_DECIMALS() == 100%)
protocolShareFee
function protocolShareFee() external view returns (uint256)
Get protocol share fee
Returns
Name
Type
Description
_0
uint256
protocol share fee in precision points (BaseSilo.PRECISION_DECIMALS() == 100%)
registerSiloVersion
function registerSiloVersion(contract ISiloFactory _factory, bool _isDefault) external nonpayable
Registers new Silo version
User can choose which Silo version he wants to deploy. It's possible to have multiple versions of Silo. Callable only by owner.
Parameters
Name
Type
Description
_factory
contract ISiloFactory
factory contract that deploys new version of Silo
_isDefault
bool
true if this version should be used as default
removeBridgeAsset
function removeBridgeAsset(address _bridgeAssetToRemove) external nonpayable
Removes bridge asset
Note that all Silos must be synced manually. Callable only by owner.
Parameters
Name
Type
Description
_bridgeAssetToRemove
address
bridge asset address to be removed
renounceOwnership
function renounceOwnership() external nonpayable
Leaves the contract without owner. It will not be possible to call onlyOwner functions anymore. Can only be called by the current owner. NOTE: Renouncing ownership will leave the contract without an owner, thereby removing any functionality that is only available to the owner.
replaceSilo
function replaceSilo(address _siloAsset, uint128 _siloVersion, bytes _siloData) external nonpayable
use this method to deploy new version of Silo for an asset that already has Silo deployed. Only owner (DAO) can replace.
Silo does NOT support rebase and deflationary tokens
Parameters
Name
Type
Description
_siloAsset
address
silo asset
_siloVersion
uint128
version of silo implementation. Use 0 for default version which is fine for 99% of cases.
_siloData
bytes
(optional) data that may be needed during silo creation
router
function router() external view returns (address)
SiloRouter utility contract that combines number of actions (Deposit, Withdraw, Borrow, Repay) for batch execution in single transaction.
Returns
Name
Type
Description
_0
address
undefined
setAssetConfig
function setAssetConfig(address _silo, address _asset, ISiloRepository.AssetConfig _assetConfig) external nonpayable
Set configuration for given asset in given Silo
Callable only by owner
Parameters
Name
Type
Description
_silo
address
Silo address for which config applies
_asset
address
asset address for which config applies
_assetConfig
ISiloRepository.AssetConfig
: - _maxLoanToValue maximum Loan-to-Value, for detailes see Repository.AssetConfig.maxLoanToValue - _liquidationThreshold liquidation threshold, for detailes see Repository.AssetConfig.maxLoanToValue - _interestRateModel interest rate model address, for detailes see Repository.AssetConfig.interestRateModel
setDefaultInterestRateModel
function setDefaultInterestRateModel(contract IInterestRateModel _defaultInterestRateModel) external nonpayable
Set default interest rate model
Callable only by owner
Parameters
Name
Type
Description
_defaultInterestRateModel
contract IInterestRateModel
default interest rate model
setDefaultLiquidationThreshold
function setDefaultLiquidationThreshold(uint64 _defaultLiquidationThreshold) external nonpayable
Set default liquidation threshold
Callable only by owner
Parameters
Name
Type
Description
_defaultLiquidationThreshold
uint64
default liquidation threshold in precision points (BaseSilo.PRECISION_DECIMALS())
setDefaultMaximumLTV
function setDefaultMaximumLTV(uint64 _defaultMaxLTV) external nonpayable
Set default maximum LTV
Callable only by owner
Parameters
Name
Type
Description
_defaultMaxLTV
uint64
default maximum LTV in precision points (BaseSilo.PRECISION_DECIMALS())
setDefaultSiloMaxDepositsLimit
function setDefaultSiloMaxDepositsLimit(uint256 _maxDeposits) external nonpayable
Sets default deposit limit for all Silos
Parameters
Name
Type
Description
_maxDeposits
uint256
deposit limit amount in ETH
setDefaultSiloVersion
function setDefaultSiloVersion(uint128 _defaultVersion) external nonpayable
Set default Silo version
Callable only by owner.
Parameters
Name
Type
Description
_defaultVersion
uint128
Silo version to be set as default
setFees
function setFees(ISiloRepository.Fees _fees) external nonpayable
Set default fees
Callable only by owner
Parameters
Name
Type
Description
_fees
ISiloRepository.Fees
: - _entryFee one time protocol fee for opening a borrow position in precision points (BaseSilo.PRECISION_DECIMALS()) - _protocolShareFee protocol revenue share in interest paid in precision points (BaseSilo.PRECISION_DECIMALS()) - _protocolLiquidationFee protocol share in liquidation profit in precision points (BaseSilo.PRECISION_DECIMALS()). It's calculated from total collateral amount to be transferred to liquidator.
setGlobalPause
function setGlobalPause(bool _globalPause) external nonpayable
Pause all Silos
Callable only by owner.
Parameters
Name
Type
Description
Name	Type	Description
maxLoanToValue	uint64	undefined
liquidationThreshold	uint64	undefined
interestRateModel	contract IInterestRateModel	undefined
Name	Type	Description
_asset	address	address of asset for which you want to create silo
_assetIsABridge	bool	bool TRUE when `_asset` is bridge asset, FALSE when it is not
Name	Type	Description
entryFee	uint64	undefined
protocolShareFee	uint64	undefined
protocolLiquidationFee	uint64	undefined
Name	Type	Description
_silo	address	Silo address for which to set limit
_asset	address	Silo asset for which to set limit
Name	Type	Description
globalToggle	bool	undefined
defaultMaxLiquidity	uint256	undefined
Name	Type	Description
_siloAsset	address	silo asset
_siloVersion	uint128	version of silo implementation
_siloData	bytes	(optional) data that may be needed during silo creation
Name	Type	Description
_factory	contract ISiloFactory	factory contract that deploys new version of Silo
_isDefault	bool	true if this version should be used as default
Name	Type	Description
_silo	address	Silo address for which config applies
_asset	address	asset address for which config applies
_assetConfig	ISiloRepository.AssetConfig	: - _maxLoanToValue maximum Loan-to-Value, for detailes see `Repository.AssetConfig.maxLoanToValue` - _liquidationThreshold liquidation threshold, for detailes see `Repository.AssetConfig.maxLoanToValue` - _interestRateModel interest rate model address, for detailes see `Repository.AssetConfig.interestRateModel`