keeper

package
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 Go to latest Published: Dec 11, 2022 License: Apache-2.0 Imports: 20 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func NewMsgServerImpl 

func NewMsgServerImpl(keeper Keeper) types.MsgServer

NewMsgServerImpl returns an implementation of the oracle MsgServer interface for the provided Keeper.

func NewQuerier 

func NewQuerier(keeper Keeper) types.QueryServer

NewQuerier returns an implementation of the oracle QueryServer interface for the provided Keeper.

Types

type Hooks 

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

Hooks defines a structure around the x/oracle Keeper that implements various Hooks interface defined by other modules such as x/leverage.

func (Hooks) AfterRegisteredTokenRemoved 

func (h Hooks) AfterRegisteredTokenRemoved(sdk.Context, leveragetypes.Token)

AfterRegisteredTokenRemoved implements the x/leverage Hooks interface. Currently, it performs a no-op, however, we may want to remove tokens from the accept list in the future when they're removed from the x/leverage Token registry.

We don't remove the token from the accept list because it might prove to be useful to still have price data for assets outside of the scope of the x/leverage registry. If assets need to be removed, they can always be purged via param change proposals.

func (Hooks) AfterTokenRegistered 

func (h Hooks) AfterTokenRegistered(ctx sdk.Context, token leveragetypes.Token)

AfterTokenRegistered implements the x/leverage Hooks interface. Specifically, it checks if the provided Token should be added to the existing accepted list of assets for the x/oracle module.

type IterateExchangeRateVote 

type IterateExchangeRateVote = func(
	voterAddr sdk.ValAddress,
	aggregateVote types.AggregateExchangeRateVote,
) (stop bool)

type IterateFeederDelegationHandler 

type IterateFeederDelegationHandler func(delegator sdk.ValAddress, delegate sdk.AccAddress) (stop bool)

type Keeper 

type Keeper struct {
	StakingKeeper types.StakingKeeper
	// contains filtered or unexported fields
}

Keeper of the oracle store

func NewKeeper 

func NewKeeper(
	cdc codec.BinaryCodec,
	storeKey storetypes.StoreKey,
	paramspace paramstypes.Subspace,
	accountKeeper types.AccountKeeper,
	bankKeeper types.BankKeeper,
	distrKeeper types.DistributionKeeper,
	stakingKeeper types.StakingKeeper,
	distrName string,
) Keeper

NewKeeper constructs a new keeper for oracle

func (Keeper) AcceptList 

func (k Keeper) AcceptList(ctx sdk.Context) (res types.DenomList)

AcceptList returns the denom list that can be activated

func (Keeper) AddHistoricPrice 

func (k Keeper) AddHistoricPrice(
	ctx sdk.Context,
	denom string,
	exchangeRate sdk.Dec,
)

AddHistoricPrice adds the historic price of a denom at the current block height.

func (Keeper) AverageOfHistoricMedians 

func (k Keeper) AverageOfHistoricMedians(
	ctx sdk.Context,
	denom string,
	numStamps uint64,
) (sdk.Dec, error)

AverageOfHistoricMedians calculates and returns the average of the last stampNum historic medians.

func (Keeper) CalcAndSetHistoricMedian 

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

CalcAndSetHistoricMedian uses all the historic prices of a given denom to calculate its median price at the current block and set it to the store. It will also call setMedianDeviation with the calculated median.

func (Keeper) ClearExchangeRates 

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

func (Keeper) ClearVotes 

func (k Keeper) ClearVotes(ctx sdk.Context, votePeriod uint64)

ClearVotes clears all tallied prevotes and votes from the store.

func (Keeper) DeleteAggregateExchangeRatePrevote 

func (k Keeper) DeleteAggregateExchangeRatePrevote(ctx sdk.Context, voter sdk.ValAddress)

DeleteAggregateExchangeRatePrevote deletes an oracle prevote from the store.

func (Keeper) DeleteAggregateExchangeRateVote 

func (k Keeper) DeleteAggregateExchangeRateVote(ctx sdk.Context, voter sdk.ValAddress)

DeleteAggregateExchangeRateVote deletes an oracle prevote from the store.

func (Keeper) DeleteHistoricMedian 

func (k Keeper) DeleteHistoricMedian(
	ctx sdk.Context,
	denom string,
	blockNum uint64,
)

DeleteHistoricMedian deletes a given denom's median price at a given block.

func (Keeper) DeleteHistoricMedianDeviation 

func (k Keeper) DeleteHistoricMedianDeviation(
	ctx sdk.Context,
	denom string,
	blockNum uint64,
)

DeleteHistoricMedianDeviation deletes a given denom's standard deviation around its median price at a given block.

func (Keeper) DeleteHistoricPrice 

func (k Keeper) DeleteHistoricPrice(
	ctx sdk.Context,
	denom string,
	blockNum uint64,
)

DeleteHistoricPrice deletes the historic price of a denom at a given block.

func (Keeper) DeleteMissCounter 

func (k Keeper) DeleteMissCounter(ctx sdk.Context, operator sdk.ValAddress)

DeleteMissCounter removes miss counter for the validator.

func (Keeper) GetAggregateExchangeRatePrevote 

func (k Keeper) GetAggregateExchangeRatePrevote(
	ctx sdk.Context,
	voter sdk.ValAddress,
) (types.AggregateExchangeRatePrevote, error)

GetAggregateExchangeRatePrevote retrieves an oracle prevote from the store.

func (Keeper) GetAggregateExchangeRateVote 

func (k Keeper) GetAggregateExchangeRateVote(
	ctx sdk.Context,
	voter sdk.ValAddress,
) (types.AggregateExchangeRateVote, error)

GetAggregateExchangeRateVote retrieves an oracle prevote from the store.

func (Keeper) GetExchangeRate 

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

GetExchangeRate gets the consensus exchange rate of USD denominated in the denom asset from the store.

func (Keeper) GetExchangeRateBase 

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

GetExchangeRateBase gets the consensus exchange rate of an asset in the base denom (e.g. ATOM -> uatom)

func (Keeper) GetFeederDelegation 

func (k Keeper) GetFeederDelegation(ctx sdk.Context, vAddr sdk.ValAddress) (sdk.AccAddress, error)

GetFeederDelegation gets the account address to which the validator operator delegated oracle vote rights.

func (Keeper) GetMissCounter 

func (k Keeper) GetMissCounter(ctx sdk.Context, operator sdk.ValAddress) uint64

GetMissCounter retrieves the # of vote periods missed in this oracle slash window.

func (Keeper) GetOracleAccount 

func (k Keeper) GetOracleAccount(ctx sdk.Context) authtypes.ModuleAccountI

GetOracleAccount returns oracle ModuleAccount.

func (Keeper) GetParams 

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

GetParams returns the total set of oracle parameters.

func (Keeper) GetRewardPool 

func (k Keeper) GetRewardPool(ctx sdk.Context, denom string) sdk.Coin

GetRewardPool retrieves the balance of the oracle module account.

func (Keeper) HasAggregateExchangeRatePrevote 

func (k Keeper) HasAggregateExchangeRatePrevote(
	ctx sdk.Context,
	voter sdk.ValAddress,
) bool

HasAggregateExchangeRatePrevote checks if a validator has an existing prevote.

func (Keeper) HistoricMedianDeviation 

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

HistoricMedianDeviation returns a given denom's most recently stamped standard deviation around its median price at a given block.

func (Keeper) HistoricMedians 

func (k Keeper) HistoricMedians(
	ctx sdk.Context,
	denom string,
	numStamps uint64,
) []sdk.Dec

HistoricMedians returns a list of a given denom's last numStamps medians.

func (Keeper) HistoricStampPeriod 

func (k Keeper) HistoricStampPeriod(ctx sdk.Context) (res uint64)

HistoricStampPeriod returns the amount of blocks the oracle module waits before recording a new historic price.

func (Keeper) Hooks 

func (k Keeper) Hooks() Hooks

Hooks returns a new Hooks instance that wraps the x/oracle keeper.

func (Keeper) IterateAggregateExchangeRatePrevotes 

func (k Keeper) IterateAggregateExchangeRatePrevotes(
	ctx sdk.Context,
	handler func(sdk.ValAddress, types.AggregateExchangeRatePrevote) bool,
)

IterateAggregateExchangeRatePrevotes iterates rate over prevotes in the store

func (Keeper) IterateAggregateExchangeRateVotes 

func (k Keeper) IterateAggregateExchangeRateVotes(
	ctx sdk.Context,
	handler IterateExchangeRateVote,
)

IterateAggregateExchangeRateVotes iterates rate over prevotes in the store.

func (Keeper) IterateAllHistoricPrices 

func (k Keeper) IterateAllHistoricPrices(
	ctx sdk.Context,
	handler func(types.Price) bool,
)

IterateAllHistoricPrices iterates over all historic prices. Iterator stops when exhausting the source, or when the handler returns `true`.

func (Keeper) IterateAllMedianDeviationPrices 

func (k Keeper) IterateAllMedianDeviationPrices(
	ctx sdk.Context,
	handler func(types.Price) bool,
)

IterateAllMedianDeviationPrices iterates over all median deviation prices. Iterator stops when exhausting the source, or when the handler returns `true`.

func (Keeper) IterateAllMedianPrices 

func (k Keeper) IterateAllMedianPrices(
	ctx sdk.Context,
	handler func(types.Price) bool,
)

IterateAllMedianPrices iterates over all median prices. Iterator stops when exhausting the source, or when the handler returns `true`.

func (Keeper) IterateExchangeRates 

func (k Keeper) IterateExchangeRates(ctx sdk.Context, handler func(string, sdk.Dec) bool)

IterateExchangeRates iterates over all USD rates in the store.

func (Keeper) IterateFeederDelegations 

func (k Keeper) IterateFeederDelegations(ctx sdk.Context, handler IterateFeederDelegationHandler)

IterateFeederDelegations iterates over the feed delegates and performs a callback function.

func (Keeper) IterateHistoricMedians 

func (k Keeper) IterateHistoricMedians(
	ctx sdk.Context,
	denom string,
	numStamps uint,
	handler func(sdk.Dec) bool,
)

IterateHistoricMediansSinceBlock iterates over medians of a given denom in the store in reverse. Iterator stops when exhausting the source, or when the handler returns `true`.

func (Keeper) IterateHistoricPrices 

func (k Keeper) IterateHistoricPrices(
	ctx sdk.Context,
	denom string,
	numStamps uint,
	handler func(sdk.Dec) bool,
)

IterateHistoricPrices iterates over historic prices of a given denom in the store in reverse. Iterator stops when exhausting the source, or when the handler returns `true`.

func (Keeper) IterateMissCounters 

func (k Keeper) IterateMissCounters(ctx sdk.Context, handler func(sdk.ValAddress, uint64) bool)

IterateMissCounters iterates over the miss counters and performs a callback function.

func (Keeper) Logger 

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

Logger returns a module-specific logger.

func (Keeper) MaxOfHistoricMedians 

func (k Keeper) MaxOfHistoricMedians(
	ctx sdk.Context,
	denom string,
	numStamps uint64,
) (sdk.Dec, error)

MaxOfHistoricMedian calculates and returns the maximum value of the last stampNum historic medians.

func (Keeper) MaximumMedianStamps 

func (k Keeper) MaximumMedianStamps(ctx sdk.Context) (res uint64)

MaximumMedianStamps returns the maximum amount of medians the oracle module will hold.

func (Keeper) MaximumPriceStamps 

func (k Keeper) MaximumPriceStamps(ctx sdk.Context) (res uint64)

MaximumMedianStamps returns the maximum amount of historic prices the oracle module will hold.

func (Keeper) MedianOfHistoricMedians 

func (k Keeper) MedianOfHistoricMedians(
	ctx sdk.Context,
	denom string,
	numStamps uint64,
) (sdk.Dec, error)

MedianOfHistoricMedians calculates and returns the median of the last stampNum historic medians.

func (Keeper) MedianStampPeriod 

func (k Keeper) MedianStampPeriod(ctx sdk.Context) (res uint64)

MedianStampPeriod returns the amount blocks the oracle module waits between calculating a new median and standard deviation of that median.

func (Keeper) MinOfHistoricMedians 

func (k Keeper) MinOfHistoricMedians(
	ctx sdk.Context,
	denom string,
	numStamps uint64,
) (sdk.Dec, error)

MinOfHistoricMedians calculates and returns the minimum value of the last stampNum historic medians.

func (Keeper) MinValidPerWindow 

func (k Keeper) MinValidPerWindow(ctx sdk.Context) (res sdk.Dec)

MinValidPerWindow returns oracle slashing threshold

func (Keeper) OrganizeBallotByDenom 

func (k Keeper) OrganizeBallotByDenom(
	ctx sdk.Context,
	validatorClaimMap map[string]types.Claim,
) []types.BallotDenom

OrganizeBallotByDenom collects all oracle votes for the current vote period, categorized by the votes' denom parameter.

func (Keeper) RewardBallotWinners 

func (k Keeper) RewardBallotWinners(
	ctx sdk.Context,
	votePeriod int64,
	rewardDistributionWindow int64,
	voteTargets []string,
	ballotWinners []types.Claim,
)

RewardBallotWinners is executed at the end of every voting period, where we give out a portion of seigniorage reward(reward-weight) to the oracle voters that voted correctly.

func (Keeper) RewardBand 

func (k Keeper) RewardBand(ctx sdk.Context) (res sdk.Dec)

RewardBand returns the ratio of allowable exchange rate error that a validator can be rewarded.

func (Keeper) RewardDistributionWindow 

func (k Keeper) RewardDistributionWindow(ctx sdk.Context) (res uint64)

RewardDistributionWindow returns the number of vote periods during which seigniorage reward comes in and then is distributed.

func (Keeper) SetAcceptList 

func (k Keeper) SetAcceptList(ctx sdk.Context, acceptList types.DenomList)

SetAcceptList updates the accepted list of assets supported by the x/oracle module.

func (Keeper) SetAggregateExchangeRatePrevote 

func (k Keeper) SetAggregateExchangeRatePrevote(
	ctx sdk.Context,
	voter sdk.ValAddress,
	prevote types.AggregateExchangeRatePrevote,
)

SetAggregateExchangeRatePrevote set an oracle aggregate prevote to the store.

func (Keeper) SetAggregateExchangeRateVote 

func (k Keeper) SetAggregateExchangeRateVote(
	ctx sdk.Context,
	voter sdk.ValAddress,
	vote types.AggregateExchangeRateVote,
)

SetAggregateExchangeRateVote adds an oracle aggregate prevote to the store.

func (Keeper) SetExchangeRate 

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

SetExchangeRate sets the consensus exchange rate of USD denominated in the denom asset to the store.

func (Keeper) SetExchangeRateWithEvent 

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

SetExchangeRateWithEvent sets an consensus exchange rate to the store with ABCI event

func (Keeper) SetFeederDelegation 

func (k Keeper) SetFeederDelegation(ctx sdk.Context, operator sdk.ValAddress, delegatedFeeder sdk.AccAddress)

SetFeederDelegation sets the account address to which the validator operator delegated oracle vote rights.

func (Keeper) SetHistoricMedian 

func (k Keeper) SetHistoricMedian(
	ctx sdk.Context,
	denom string,
	blockNum uint64,
	median sdk.Dec,
)

func (Keeper) SetHistoricMedianDeviation 

func (k Keeper) SetHistoricMedianDeviation(
	ctx sdk.Context,
	denom string,
	blockNum uint64,
	medianDeviation sdk.Dec,
)

func (Keeper) SetHistoricPrice 

func (k Keeper) SetHistoricPrice(
	ctx sdk.Context,
	denom string,
	blockNum uint64,
	exchangeRate sdk.Dec,
)

func (Keeper) SetHistoricStampPeriod 

func (k Keeper) SetHistoricStampPeriod(ctx sdk.Context, historicPriceStampPeriod uint64)

SetHistoricStampPeriod updates the amount of blocks the oracle module waits before recording a new historic price.

func (Keeper) SetMaximumMedianStamps 

func (k Keeper) SetMaximumMedianStamps(ctx sdk.Context, maximumMedianStamps uint64)

SetMaximumMedianStamps updates the the maximum amount of medians the oracle module will hold.

func (Keeper) SetMaximumPriceStamps 

func (k Keeper) SetMaximumPriceStamps(ctx sdk.Context, maximumPriceStamps uint64)

SetMaximumPriceStamps updates the the maximum amount of historic prices the oracle module will hold.

func (Keeper) SetMedianStampPeriod 

func (k Keeper) SetMedianStampPeriod(ctx sdk.Context, medianStampPeriod uint64)

SetMedianStampPeriod updates the amount blocks the oracle module waits between calculating a new median and standard deviation of that median.

func (Keeper) SetMissCounter 

func (k Keeper) SetMissCounter(ctx sdk.Context, operator sdk.ValAddress, missCounter uint64)

SetMissCounter updates the # of vote periods missed in this oracle slash window.

func (Keeper) SetParams 

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

SetParams sets the total set of oracle parameters.

func (Keeper) SlashAndResetMissCounters 

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

SlashAndResetMissCounters iterates over all the current missed counters and calculates the "valid vote rate" as: (votePeriodsPerWindow - missCounter)/votePeriodsPerWindow.

If the valid vote rate is below the minValidPerWindow, the validator will be slashed and jailed.

func (Keeper) SlashFraction 

func (k Keeper) SlashFraction(ctx sdk.Context) (res sdk.Dec)

SlashFraction returns oracle voting penalty rate

func (Keeper) SlashWindow 

func (k Keeper) SlashWindow(ctx sdk.Context) (res uint64)

SlashWindow returns # of vote period for oracle slashing

func (Keeper) ValidateFeeder 

func (k Keeper) ValidateFeeder(ctx sdk.Context, feederAddr sdk.AccAddress, valAddr sdk.ValAddress) error

ValidateFeeder returns error if the given feeder is not allowed to feed the message.

func (Keeper) VotePeriod 

func (k Keeper) VotePeriod(ctx sdk.Context) (res uint64)

VotePeriod returns the number of blocks during which voting takes place.

func (Keeper) VoteThreshold 

func (k Keeper) VoteThreshold(ctx sdk.Context) (res sdk.Dec)

VoteThreshold returns the minimum percentage of votes that must be received for a ballot to pass.

func (Keeper) WithinHistoricMedianDeviation 

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

WithinHistoricMedianDeviation returns whether or not the current price of a given denom is within the latest stamped Standard Deviation around the Median.

type Migrator 

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

Migrator is a struct for handling in-place store migrations.

func NewMigrator 

func NewMigrator(keeper *Keeper) Migrator

NewMigrator creates a Migrator.

func (Migrator) Migrate1to2 

func (m Migrator) Migrate1to2(ctx sdk.Context) error

Migrate1to2 migrates from version 1 to 2.

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