keeper

package
v0.5.0-rc3 Latest Latest
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 Go to latest Published: Dec 27, 2021 License: Apache-2.0 Imports: 12 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func Interpolate added in v0.7.0 

func Interpolate(x, xMin, yMin, xMax, yMax sdk.Dec) sdk.Dec

Interpolate takes a line defined by two points (xMin, yMin) and (xMax, yMax), then finds the y-value of the point on that line for an input x-value. It will return yMin if xMin = xMax (i.e. a vertical line). While this function is intended for interpolation (xMin < x < xMax), it works correctly even when x is outside that range or when xMin > xMax.

func NewMsgServerImpl 

func NewMsgServerImpl(keeper Keeper) types.MsgServer

NewMsgServerImpl returns an implementation of MsgServer for the x/leverage module.

Types

type Keeper 

type Keeper struct {
	// contains filtered or unexported fields
}

func NewKeeper 

func NewKeeper(
	cdc codec.Codec,
	storeKey sdk.StoreKey,
	paramSpace paramtypes.Subspace,
	bk types.BankKeeper,
) Keeper

func (Keeper) AccrueAllInterest added in v0.7.0 

func (k Keeper) AccrueAllInterest(ctx sdk.Context) error

AccrueAllInterest is called by EndBlock when BlockHeight % InterestEpoch == 0. It should accrue interest on all open borrows, increase reserves, and set LastInterestTime to BlockTime.

func (Keeper) BorrowAsset 

func (k Keeper) BorrowAsset(ctx sdk.Context, borrowerAddr sdk.AccAddress, borrow sdk.Coin) error

BorrowAsset attempts to borrow tokens from the leverage module account using collateral uTokens. If asset type is invalid, collateral is insufficient, or module balance is insufficient, we return an error.

func (Keeper) DeleteRegisteredTokens added in v0.7.0 

func (k Keeper) DeleteRegisteredTokens(ctx sdk.Context)

DeleteRegisteredTokens deletes all registered tokens from the x/leverage module's KVStore.

func (Keeper) ExchangeTokens 

func (k Keeper) ExchangeTokens(ctx sdk.Context, tokens sdk.Coin) (sdk.Coin, error)

ExchangeTokens converts an sdk.Coin containing base assets to its value in uTokens

func (Keeper) ExchangeUTokens added in v0.8.4 

func (k Keeper) ExchangeUTokens(ctx sdk.Context, utokens sdk.Coin) (sdk.Coin, error)

ExchangeUTokens converts an sdk.Coin containing uTokens to its value in base assets

func (Keeper) FromTokenToUTokenDenom 

func (k Keeper) FromTokenToUTokenDenom(ctx sdk.Context, tokenDenom string) string

FromTokenToUTokenDenom returns the associated uToken denom for the given token denom. If the token denom does not exist, we assume the association is invalid and we return an empty string.

func (Keeper) FromUTokenToTokenDenom 

func (k Keeper) FromUTokenToTokenDenom(ctx sdk.Context, uTokenDenom string) string

FromUTokenToTokenDenom returns the associated token denom for the given uToken denom. If the uToken denom does not exist, we assume the association is invalid and we return an empty string.

func (Keeper) GetAllRegisteredTokens added in v0.7.0 

func (k Keeper) GetAllRegisteredTokens(ctx sdk.Context) ([]types.Token, error)

GetAllRegisteredTokens returns all the registered tokens from the x/leverage module's KVStore.

func (Keeper) GetBorrow added in v0.7.0 

func (k Keeper) GetBorrow(ctx sdk.Context, borrowerAddr sdk.AccAddress, denom string) sdk.Coin

GetBorrow returns an sdk.Coin representing how much of a given denom a borrower currently owes.

func (Keeper) GetBorrowUtilization added in v0.7.0 

func (k Keeper) GetBorrowUtilization(ctx sdk.Context, denom string, totalBorrowed sdk.Int) (sdk.Dec, error)

GetBorrowUtilization derives the current borrow utilization of an asset type from the current total borrowed.

func (Keeper) GetBorrowerBorrows added in v0.7.0 

func (k Keeper) GetBorrowerBorrows(ctx sdk.Context, borrowerAddr sdk.AccAddress) (sdk.Coins, error)

GetBorrowerBorrows returns an sdk.Coins object containing all open borrows associated with an address.

func (Keeper) GetCollateralSetting 

func (k Keeper) GetCollateralSetting(ctx sdk.Context, borrowerAddr sdk.AccAddress, denom string) bool

GetCollateralSetting checks if a uToken denom is enabled for use as collateral by a single borrower.

func (Keeper) GetCollateralWeight added in v0.7.0 

func (k Keeper) GetCollateralWeight(ctx sdk.Context, denom string) (sdk.Dec, error)

GetCollateralWeight gets collateral weight of a given token.

func (Keeper) GetDynamicBorrowInterest added in v0.7.0 

func (k Keeper) GetDynamicBorrowInterest(ctx sdk.Context, denom string, utilization sdk.Dec) (sdk.Dec, error)

GetDynamicBorrowInterest derives the current borrow interest rate on an asset type, using utilization and params.

func (Keeper) GetExchangeRate added in v0.7.0 

func (k Keeper) GetExchangeRate(ctx sdk.Context, denom string) (sdk.Dec, error)

GetExchangeRate gets the token:uTokenexchange rate for a given base token denom

func (Keeper) GetInterestAtKink added in v0.7.0 

func (k Keeper) GetInterestAtKink(ctx sdk.Context, denom string) (sdk.Dec, error)

GetInterestAtKink gets the interest rate at the "kink" in the utilization:interest graph for a given token.

func (Keeper) GetInterestBase added in v0.7.0 

func (k Keeper) GetInterestBase(ctx sdk.Context, denom string) (sdk.Dec, error)

GetInterestBase gets the base interest rate for a given token.

func (Keeper) GetInterestKinkUtilization added in v0.7.0 

func (k Keeper) GetInterestKinkUtilization(ctx sdk.Context, denom string) (sdk.Dec, error)

GetInterestKinkUtilization gets the utilization at the "kink" in the utilization:interest graph for a given token.

func (Keeper) GetInterestMax added in v0.7.0 

func (k Keeper) GetInterestMax(ctx sdk.Context, denom string) (sdk.Dec, error)

GetInterestMax gets the maximum interest rate for a given token.

func (Keeper) GetParams 

func (k Keeper) GetParams(ctx sdk.Context) (params types.Params)

GetParams gets the x/leverage module's parameters.

func (Keeper) GetRegisteredToken added in v0.7.0 

func (k Keeper) GetRegisteredToken(ctx sdk.Context, denom string) (types.Token, error)

GetRegisteredToken gets a token from the x/leverage module's KVStore.

func (Keeper) GetReserveAmount added in v0.7.0 

func (k Keeper) GetReserveAmount(ctx sdk.Context, denom string) sdk.Int

GetReserveAmount gets the amount reserved of a specified token. On invalid asset, the reserved amount is zero.

func (Keeper) GetReserveFactor added in v0.7.0 

func (k Keeper) GetReserveFactor(ctx sdk.Context, denom string) (sdk.Dec, error)

GetReserveFactor gets the reserve factor for a given token.

func (Keeper) GetTotalBorrows added in v0.7.0 

func (k Keeper) GetTotalBorrows(ctx sdk.Context) (sdk.Coins, error)

GetTotalBorrows returns total borrows across all borrowers and asset types as an sdk.Coins. It is done for all asset types at once, rather than one denom at a time, because either case would require iterating through all open borrows the way borrows are currently stored ( prefix | address | denom ).

func (Keeper) IncreaseReserves 

func (k Keeper) IncreaseReserves(ctx sdk.Context, coin sdk.Coin) error

IncreaseReserves adds an sdk.Coin (denom, amount) to the module's reserve requirements.

func (Keeper) InitializeExchangeRate added in v0.7.0 

func (k Keeper) InitializeExchangeRate(ctx sdk.Context, denom string) error

InitializeExchangeRate checks the token:uTokenexchange rate for a given base token denom and sets it to 1.0 if no rate has been registered. No-op if a rate already exists.

func (*Keeper) InitializeLastInterestTime 

func (k *Keeper) InitializeLastInterestTime(ctx sdk.Context)

InitializeLastInterestTime sets LastInterestTime to present if it does not exist (used for genesis).

func (Keeper) IsAcceptedToken 

func (k Keeper) IsAcceptedToken(ctx sdk.Context, tokenDenom string) bool

IsAcceptedToken returns true if a given (non-UToken) token denom is an accepted asset type.

func (Keeper) IsAcceptedUToken 

func (k Keeper) IsAcceptedUToken(ctx sdk.Context, uTokenDenom string) bool

IsAcceptedUToken returns true if a given uToken denom is an accepted asset type.

func (Keeper) LendAsset 

func (k Keeper) LendAsset(ctx sdk.Context, lenderAddr sdk.AccAddress, loan sdk.Coin) error

LendAsset attempts to deposit assets into the leverage module account in exchange for uTokens. If asset type is invalid or account balance is insufficient, we return an error.

func (Keeper) Logger 

func (k Keeper) Logger(ctx sdk.Context) log.Logger

func (Keeper) RepayAsset 

func (k Keeper) RepayAsset(ctx sdk.Context, borrowerAddr sdk.AccAddress, payment sdk.Coin) error

RepayAsset attempts to repay an open borrow position with base assets. If asset type is invalid, account balance is insufficient, or no open borrow position exists, we return an error. Additionally, if the amount provided is greater than the full repayment amount, only the necessary amount is transferred.

func (Keeper) SetBorrow added in v0.7.0 

func (k Keeper) SetBorrow(ctx sdk.Context, borrowerAddr sdk.AccAddress, denom string, amount sdk.Int) error

SetBorrow sets the amount borrowed by an address in a given denom to an amount

func (Keeper) SetCollateralSetting 

func (k Keeper) SetCollateralSetting(ctx sdk.Context, borrowerAddr sdk.AccAddress, denom string, enable bool) error

SetCollateralSetting enables or disables a uToken denom for use as collateral by a single borrower.

func (Keeper) SetExchangeRate added in v0.7.0 

func (k Keeper) SetExchangeRate(ctx sdk.Context, denom string, rate sdk.Dec) error

SetExchangeRate sets the token:uTokenexchange rate for a given base token denom

func (Keeper) SetParams 

func (k Keeper) SetParams(ctx sdk.Context, params types.Params)

SetParams sets the x/leverage module's parameters.

func (Keeper) SetRegisteredToken 

func (k Keeper) SetRegisteredToken(ctx sdk.Context, token types.Token)

SetRegisteredToken stores a token into the x/leverage module's KVStore.

func (Keeper) SetTokenDenom 

func (k Keeper) SetTokenDenom(ctx sdk.Context, tokenDenom string)

SetTokenDenom stores the token denom along with the uToken denom association.

func (Keeper) TotalUTokenSupply 

func (k Keeper) TotalUTokenSupply(ctx sdk.Context, uTokenDenom string) sdk.Coin

TotalUTokenSupply returns an sdk.Coin representing the total balance of a given uToken type if valid. If the denom is not an accepted uToken type, we return a zero amount.

func (Keeper) UpdateExchangeRates added in v0.7.0 

func (k Keeper) UpdateExchangeRates(ctx sdk.Context) error

UpdateExchangeRates calculates sets the token:uToken exchange rates for all token denoms.

func (Keeper) WithdrawAsset 

func (k Keeper) WithdrawAsset(ctx sdk.Context, lenderAddr sdk.AccAddress, uToken sdk.Coin) error

WithdrawAsset attempts to deposit uTokens into the leverage module in exchange for the original tokens lent. If the uToken type is invalid or account balance insufficient on either side, we return an error.

type Querier added in v0.7.0 

type Querier struct {
	Keeper
}

Querier implements a QueryServer for the x/leverage module.

func NewQuerier 

func NewQuerier(k Keeper) Querier

func (Querier) Borrowed added in v0.7.0 

func (q Querier) Borrowed(
	goCtx context.Context,
	req *types.QueryBorrowedRequest,
) (*types.QueryBorrowedResponse, error)

func (Querier) Params added in v0.7.0 

func (q Querier) Params(
	goCtx context.Context,
	req *types.QueryParamsRequest,
) (*types.QueryParamsResponse, error)

func (Querier) RegisteredTokens added in v0.7.0 

func (q Querier) RegisteredTokens(
	goCtx context.Context,
	req *types.QueryRegisteredTokens,
) (*types.QueryRegisteredTokensResponse, error)

func (Querier) ReserveAmount added in v0.7.0 

func (q Querier) ReserveAmount(
	goCtx context.Context,
	req *types.QueryReserveAmountRequest,
) (*types.QueryReserveAmountResponse, error)

Source Files

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