0g-chain/x/pricefeed/simulation/genesis.go

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package simulation
import (
"fmt"
"time"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/module"
"github.com/cosmos/cosmos-sdk/x/simulation"
"github.com/kava-labs/kava/x/pricefeed/types"
pricefeed "github.com/kava-labs/kava/x/pricefeed/types"
)
var (
// BaseAssets is a list of collateral asset denoms
BaseAssets = [3]string{"bnb", "xrp", "btc"}
QuoteAsset = "usd"
)
// RandomizedGenState generates a random GenesisState for pricefeed
func RandomizedGenState(simState *module.SimulationState) {
pricefeedGenesis := loadPricefeedGenState(simState)
fmt.Printf("Selected randomly generated %s parameters:\n%s\n", types.ModuleName, codec.MustMarshalJSONIndent(simState.Cdc, pricefeedGenesis))
simState.GenState[types.ModuleName] = simState.Cdc.MustMarshalJSON(pricefeedGenesis)
}
// loadPricefeedGenState loads a valid pricefeed gen state
func loadPricefeedGenState(simState *module.SimulationState) pricefeed.GenesisState {
var markets []pricefeed.Market
var postedPrices []pricefeed.PostedPrice
for _, denom := range BaseAssets {
// Select an account to be the oracle
oracle, _ := simulation.RandomAcc(simState.Rand, simState.Accounts)
marketID := fmt.Sprintf("%s:%s", denom, QuoteAsset)
// Construct market for asset
market := pricefeed.Market{
MarketID: marketID,
BaseAsset: denom,
QuoteAsset: QuoteAsset,
Oracles: []sdk.AccAddress{oracle.Address},
Active: true,
}
// Construct posted price for asset
postedPrice := pricefeed.PostedPrice{
MarketID: market.MarketID,
OracleAddress: oracle.Address,
Price: getInitialPrice(marketID),
Expiry: simState.GenTimestamp.Add(time.Hour * 24),
}
markets = append(markets, market)
postedPrices = append(postedPrices, postedPrice)
}
params := pricefeed.NewParams(markets)
return pricefeed.NewGenesisState(params, postedPrices)
}
// getInitialPrice gets the starting price for each of the base assets
func getInitialPrice(marketID string) (price sdk.Dec) {
switch marketID {
case "btc:usd":
return sdk.MustNewDecFromStr("7000")
case "bnb:usd":
return sdk.MustNewDecFromStr("14")
case "xrp:usd":
return sdk.MustNewDecFromStr("0.2")
default:
return sdk.MustNewDecFromStr("20") // Catch future additional assets
}
}