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

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package simulation
// import (
// "fmt"
// "math/rand"
// "time"
// "github.com/cosmos/cosmos-sdk/baseapp"
// "github.com/cosmos/cosmos-sdk/codec"
// "github.com/cosmos/cosmos-sdk/simapp/helpers"
// sdk "github.com/cosmos/cosmos-sdk/types"
// "github.com/cosmos/cosmos-sdk/x/auth"
// "github.com/cosmos/cosmos-sdk/x/simulation"
// appparams "github.com/kava-labs/kava/app/params"
// "github.com/kava-labs/kava/x/pricefeed/keeper"
// "github.com/kava-labs/kava/x/pricefeed/types"
// )
// // Simulation operation weights constants
// const (
// OpWeightMsgUpdatePrices = "op_weight_msg_update_prices"
// // Block time params are un-exported constants in cosmos-sdk/x/simulation.
// // Copy them here in lieu of importing them.
// minTimePerBlock time.Duration = (10000 / 2) * time.Second
// maxTimePerBlock time.Duration = 10000 * time.Second
// // Calculate the average block time
// AverageBlockTime time.Duration = (maxTimePerBlock - minTimePerBlock) / 2
// )
// // WeightedOperations returns all the operations from the module with their respective weights
// func WeightedOperations(
// appParams simulation.AppParams, cdc *codec.Codec, ak auth.AccountKeeper, k keeper.Keeper,
// ) simulation.WeightedOperations {
// var weightMsgUpdatePrices int
// // var numBlocks int
// appParams.GetOrGenerate(cdc, OpWeightMsgUpdatePrices, &weightMsgUpdatePrices, nil,
// func(_ *rand.Rand) {
// weightMsgUpdatePrices = appparams.DefaultWeightMsgUpdatePrices
// },
// )
// return simulation.WeightedOperations{
// simulation.NewWeightedOperation(
// weightMsgUpdatePrices,
// SimulateMsgUpdatePrices(ak, k, 10000),
// ),
// }
// }
// // SimulateMsgUpdatePrices updates the prices of various assets by randomly varying them based on current price
// func SimulateMsgUpdatePrices(ak auth.AccountKeeper, keeper keeper.Keeper, blocks int) simulation.Operation {
// // runs one at the start of each simulation
// startingPrices := map[string]sdk.Dec{
// "btc:usd": sdk.MustNewDecFromStr("7000"),
// "bnb:usd": sdk.MustNewDecFromStr("15"),
// "xrp:usd": sdk.MustNewDecFromStr("0.25"),
// }
// // creates the new price generator from starting prices - resets for each sim
// priceGenerator := NewPriceGenerator(startingPrices)
// return func(
// r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simulation.Account, chainID string,
// ) (simulation.OperationMsg, []simulation.FutureOperation, error) {
// // walk prices to current block height, noop if already called for current height
// priceGenerator.Step(r, ctx.BlockHeight())
// randomMarket := pickRandomAsset(ctx, keeper, r)
// marketID := randommarket.MarketId
// address := getRandomOracle(r, randomMarket)
// oracle, found := simulation.FindAccount(accs, address)
// if !found {
// return simulation.NoOpMsg(types.ModuleName), nil, nil
// }
// oracleAcc := ak.GetAccount(ctx, oracle.Address)
// if oracleAcc == nil {
// return simulation.NoOpMsg(types.ModuleName), nil, nil
// }
// // get price for marketID and current block height set in Step
// price := priceGenerator.GetCurrentPrice(marketID)
// // get the expiry time based off the current time
// expiry := getExpiryTime(ctx)
// // now create the msg to post price
// msg := types.NewMsgPostPrice(oracle.Address, marketID, price, expiry)
// spendable := oracleAcc.SpendableCoins(ctx.BlockTime())
// fees, err := simulation.RandomFees(r, ctx, spendable)
// if err != nil {
// return simulation.NoOpMsg(types.ModuleName), nil, err
// }
// tx := helpers.GenTx(
// []sdk.Msg{msg},
// fees,
// helpers.DefaultGenTxGas,
// chainID,
// []uint64{oracleAcc.GetAccountNumber()},
// []uint64{oracleAcc.GetSequence()},
// oracle.PrivKey,
// )
// _, result, err := app.Deliver(tx)
// if err != nil {
// // to aid debugging, add the stack trace to the comment field of the returned opMsg
// return simulation.NewOperationMsg(msg, false, fmt.Sprintf("%+v", err)), nil, err
// }
// return simulation.NewOperationMsg(msg, true, result.Log), nil, nil
// }
// }
// // getRandomOracle picks a random oracle from the list of oracles
// func getRandomOracle(r *rand.Rand, market types.Market) sdk.AccAddress {
// randomIndex := simulation.RandIntBetween(r, 0, len(market.Oracles))
// return market.Oracles[randomIndex]
// }
// // pickRandomAsset picks a random asset out of the assets with equal probability
// // it returns the Market which includes the base asset as one of its fields
// func pickRandomAsset(ctx sdk.Context, keeper keeper.Keeper, r *rand.Rand) (market types.Market) {
// // get the params
// params := keeper.GetParams(ctx)
// // now pick a random asset
// randomIndex := simulation.RandIntBetween(r, 0, len(params.Markets))
// return params.Markets[randomIndex]
// }
// // getExpiryTime gets a price expiry time by taking the current time and adding a delta to it
// func getExpiryTime(ctx sdk.Context) (t time.Time) {
// // need to use the blocktime from the context as the context generates random start time when running simulations
// return ctx.BlockTime().Add(AverageBlockTime * 5000) // if blocks were 6 seconds, the expiry would be 8 hrs
// }