oracle

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 Go to latest Published: Jun 27, 2023 License: Apache-2.0 Imports: 29 Imported by: 0

README

Abstract

Sei Network has an oracle module to support asset exchange rate pricing for use by other modules and contracts. When validating for the network, participation as an Oracle is expected and required in order to ensure the most reliable and accurate pricing for assets.

In the vote step for window X, the validator provides their proposed exchange rates for the current window. At the end of the voting period, all of the exchange rate votes are accumulated and a weighted median is computed (weighted by validator voting power) to determine the true exchange rate for each asset.

There are penalties for non-participation and participation with bad data. Validators have a miss count that tracks the number of voting windows in which a validator has either not provided data or provided data that deviated too much from the weighted median. In a given number of voting periods, if a validators miss count is too high, they are slashed as a penalty for misbehaving over an extended period of time.

TODO: Populate Oracle README Contents below.

Contents

Concepts

Voting Procedure

Reward Band

Slashing

Abstaining from Voting

State

Messages

Events

Hooks

Parameters

Transactions

Queries

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func EndBlocker 

func EndBlocker(ctx sdk.Context, k keeper.Keeper)

func ExportGenesis 

func ExportGenesis(ctx sdk.Context, keeper keeper.Keeper) *types.GenesisState

ExportGenesis writes the current store values to a genesis file, which can be imported again with InitGenesis

func InitGenesis 

func InitGenesis(ctx sdk.Context, keeper keeper.Keeper, data *types.GenesisState)

InitGenesis initialize default parameters and the keeper's address to pubkey map

func MidBlocker 

func MidBlocker(ctx sdk.Context, k keeper.Keeper)

func NewHandler 

func NewHandler(k keeper.Keeper) sdk.Handler

NewHandler returns a handler for "oracle" type messages.

func Tally 

func Tally(ctx sdk.Context, pb types.ExchangeRateBallot, rewardBand sdk.Dec, validatorClaimMap map[string]types.Claim) (weightedMedian sdk.Dec)

Tally calculates the median and returns it. Sets the set of voters to be rewarded, i.e. voted within a reasonable spread from the weighted median to the store CONTRACT: pb must be sorted

Types

type AppModule 

type AppModule struct {
	AppModuleBasic
	// contains filtered or unexported fields
}

AppModule implements an application module for the oracle module.

func NewAppModule 

func NewAppModule(
	cdc codec.Codec,
	keeper keeper.Keeper,
	accountKeeper types.AccountKeeper,
	bankKeeper types.BankKeeper,
) AppModule

NewAppModule creates a new AppModule object

func (AppModule) BeginBlock 

func (AppModule) BeginBlock(_ sdk.Context, _ abci.RequestBeginBlock)

BeginBlock returns the begin blocker for the oracle module.

func (AppModule) ConsensusVersion 

func (AppModule) ConsensusVersion() uint64

ConsensusVersion implements AppModule/ConsensusVersion.

func (AppModule) EndBlock 

func (am AppModule) EndBlock(ctx sdk.Context, _ abci.RequestEndBlock) (ret []abci.ValidatorUpdate)

EndBlock returns the end blocker for the oracle module.

func (AppModule) ExportGenesis 

func (am AppModule) ExportGenesis(ctx sdk.Context, cdc codec.JSONCodec) json.RawMessage

ExportGenesis returns the exported genesis state as raw bytes for the oracle module.

func (AppModule) GenerateGenesisState 

func (AppModule) GenerateGenesisState(simState *module.SimulationState)

GenerateGenesisState creates a randomized GenState of the distribution module.

func (AppModule) InitGenesis 

func (am AppModule) InitGenesis(ctx sdk.Context, cdc codec.JSONCodec, data json.RawMessage) []abci.ValidatorUpdate

InitGenesis performs genesis initialization for the oracle module. It returns no validator updates.

func (AppModule) LegacyQuerierHandler 

func (am AppModule) LegacyQuerierHandler(legacyQuerierCdc *codec.LegacyAmino) sdk.Querier

LegacyQuerierHandler returns the oracle module sdk.Querier.

func (AppModule) MidBlock 

func (am AppModule) MidBlock(ctx sdk.Context, _ int64)

EndBlock returns the end blocker for the oracle module.

func (AppModule) Name 

func (AppModule) Name() string

Name returns the oracle module's name.

func (AppModule) ProposalContents 

func (am AppModule) ProposalContents(_ module.SimulationState) []simtypes.WeightedProposalContent

ProposalContents returns all the oracle content functions used to simulate governance proposals.

func (AppModule) QuerierRoute 

func (AppModule) QuerierRoute() string

QuerierRoute returns the oracle module's querier route name.

func (AppModule) RandomizedParams 

func (AppModule) RandomizedParams(r *rand.Rand) []simtypes.ParamChange

RandomizedParams creates randomized oracle param changes for the simulator.

func (AppModule) RegisterInvariants 

func (AppModule) RegisterInvariants(_ sdk.InvariantRegistry)

RegisterInvariants performs a no-op.

func (AppModule) RegisterServices 

func (am AppModule) RegisterServices(cfg module.Configurator)

RegisterServices registers module services.

func (AppModule) RegisterStoreDecoder 

func (am AppModule) RegisterStoreDecoder(sdr sdk.StoreDecoderRegistry)

RegisterStoreDecoder registers a decoder for oracle module's types

func (AppModule) Route 

func (am AppModule) Route() sdk.Route

Route returns the message routing key for the oracle module.

func (AppModule) WeightedOperations 

func (am AppModule) WeightedOperations(simState module.SimulationState) []simtypes.WeightedOperation

WeightedOperations returns the all the oracle module operations with their respective weights.

type AppModuleBasic 

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

AppModuleBasic defines the basic application module used by the oracle module.

func (AppModuleBasic) DefaultGenesis 

func (AppModuleBasic) DefaultGenesis(cdc codec.JSONCodec) json.RawMessage

DefaultGenesis returns default genesis state as raw bytes for the staking module.

func (AppModuleBasic) GetQueryCmd 

func (AppModuleBasic) GetQueryCmd() *cobra.Command

GetQueryCmd returns no root query command for the oracle module.

func (AppModuleBasic) GetTxCmd 

func (AppModuleBasic) GetTxCmd() *cobra.Command

GetTxCmd returns the root tx command for the oracle module.

func (AppModuleBasic) Name 

func (AppModuleBasic) Name() string

Name returns the module's name

func (AppModuleBasic) RegisterGRPCGatewayRoutes 

func (AppModuleBasic) RegisterGRPCGatewayRoutes(clientCtx client.Context, mux *runtime.ServeMux)

RegisterGRPCGatewayRoutes registers the gRPC Gateway routes for the oracle module.

func (AppModuleBasic) RegisterInterfaces 

func (b AppModuleBasic) RegisterInterfaces(registry codectypes.InterfaceRegistry)

RegisterInterfaces registers the module's interface types

func (AppModuleBasic) RegisterLegacyAminoCodec 

func (AppModuleBasic) RegisterLegacyAminoCodec(cdc *codec.LegacyAmino)

RegisterLegacyAminoCodec registers the module's types on the given LegacyAmino codec.

func (AppModuleBasic) RegisterRESTRoutes 

func (AppModuleBasic) RegisterRESTRoutes(clientCtx client.Context, rtr *mux.Router)

RegisterRESTRoutes registers the REST routes for the oracle module.

func (AppModuleBasic) ValidateGenesis 

func (AppModuleBasic) ValidateGenesis(cdc codec.JSONCodec, _ client.TxEncodingConfig, bz json.RawMessage) error

ValidateGenesis performs genesis state validation for the oracle module.

type SpammingPreventionDecorator 

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

SpammingPreventionDecorator will check if the transaction's gas is smaller than configured hard cap

func NewSpammingPreventionDecorator 

func NewSpammingPreventionDecorator(oracleKeeper keeper.Keeper) SpammingPreventionDecorator

NewSpammingPreventionDecorator returns new spamming prevention decorator instance

func (SpammingPreventionDecorator) AnteDeps 

func (spd SpammingPreventionDecorator) AnteDeps(txDeps []sdkacltypes.AccessOperation, tx sdk.Tx, next sdk.AnteDepGenerator) (newTxDeps []sdkacltypes.AccessOperation, err error)

func (SpammingPreventionDecorator) AnteHandle 

func (spd SpammingPreventionDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)

AnteHandle handles msg tax fee checking

func (SpammingPreventionDecorator) CheckOracleSpamming 

func (spd SpammingPreventionDecorator) CheckOracleSpamming(ctx sdk.Context, msgs []sdk.Msg) error

CheckOracleSpamming check whether the msgs are spamming purpose or not

type VoteAloneDecorator 

type VoteAloneDecorator struct{}

func NewOracleVoteAloneDecorator 

func NewOracleVoteAloneDecorator() VoteAloneDecorator

func (VoteAloneDecorator) AnteDeps 

func (VoteAloneDecorator) AnteDeps(txDeps []sdkacltypes.AccessOperation, tx sdk.Tx, next sdk.AnteDepGenerator) (newTxDeps []sdkacltypes.AccessOperation, err error)

func (VoteAloneDecorator) AnteHandle 

func (VoteAloneDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error)

AnteHandle handles msg tax fee checking

Source Files

View all Source files

Directories

Path Synopsis
client
cli
rest
wasm
wasm/bindings
DONTCOVER
 DONTCOVER
nolint
 nolint
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