526 lines
18 KiB
Go
526 lines
18 KiB
Go
package simulation
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import (
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"fmt"
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"math/rand"
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"github.com/cosmos/cosmos-sdk/baseapp"
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"github.com/cosmos/cosmos-sdk/codec"
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"github.com/cosmos/cosmos-sdk/simapp/helpers"
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simappparams "github.com/cosmos/cosmos-sdk/simapp/params"
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sdk "github.com/cosmos/cosmos-sdk/types"
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simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
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"github.com/cosmos/cosmos-sdk/x/simulation"
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"github.com/cosmos/cosmos-sdk/x/staking/keeper"
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"github.com/cosmos/cosmos-sdk/x/staking/types"
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)
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// Simulation operation weights constants
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const (
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OpWeightMsgCreateValidator = "op_weight_msg_create_validator"
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OpWeightMsgEditValidator = "op_weight_msg_edit_validator"
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OpWeightMsgDelegate = "op_weight_msg_delegate"
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OpWeightMsgUndelegate = "op_weight_msg_undelegate"
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OpWeightMsgBeginRedelegate = "op_weight_msg_begin_redelegate"
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)
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// WeightedOperations returns all the operations from the module with their respective weights
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func WeightedOperations(
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appParams simtypes.AppParams, cdc codec.JSONMarshaler, ak types.AccountKeeper,
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bk types.BankKeeper, k keeper.Keeper,
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) simulation.WeightedOperations {
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var (
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weightMsgCreateValidator int
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weightMsgEditValidator int
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weightMsgDelegate int
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weightMsgUndelegate int
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weightMsgBeginRedelegate int
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)
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appParams.GetOrGenerate(cdc, OpWeightMsgCreateValidator, &weightMsgCreateValidator, nil,
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func(_ *rand.Rand) {
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weightMsgCreateValidator = simappparams.DefaultWeightMsgCreateValidator
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},
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)
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appParams.GetOrGenerate(cdc, OpWeightMsgEditValidator, &weightMsgEditValidator, nil,
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func(_ *rand.Rand) {
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weightMsgEditValidator = simappparams.DefaultWeightMsgEditValidator
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},
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)
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appParams.GetOrGenerate(cdc, OpWeightMsgDelegate, &weightMsgDelegate, nil,
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func(_ *rand.Rand) {
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weightMsgDelegate = simappparams.DefaultWeightMsgDelegate
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},
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)
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appParams.GetOrGenerate(cdc, OpWeightMsgUndelegate, &weightMsgUndelegate, nil,
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func(_ *rand.Rand) {
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weightMsgUndelegate = simappparams.DefaultWeightMsgUndelegate
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},
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)
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appParams.GetOrGenerate(cdc, OpWeightMsgBeginRedelegate, &weightMsgBeginRedelegate, nil,
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func(_ *rand.Rand) {
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weightMsgBeginRedelegate = simappparams.DefaultWeightMsgBeginRedelegate
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},
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)
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return simulation.WeightedOperations{
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simulation.NewWeightedOperation(
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weightMsgCreateValidator,
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SimulateMsgCreateValidator(ak, bk, k),
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),
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simulation.NewWeightedOperation(
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weightMsgEditValidator,
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SimulateMsgEditValidator(ak, bk, k),
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),
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simulation.NewWeightedOperation(
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weightMsgDelegate,
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SimulateMsgDelegate(ak, bk, k),
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),
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simulation.NewWeightedOperation(
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weightMsgUndelegate,
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SimulateMsgUndelegate(ak, bk, k),
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),
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simulation.NewWeightedOperation(
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weightMsgBeginRedelegate,
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SimulateMsgBeginRedelegate(ak, bk, k),
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),
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}
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}
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// SimulateMsgCreateValidator generates a MsgCreateValidator with random values
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// nolint: interfacer
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func SimulateMsgCreateValidator(ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper) simtypes.Operation {
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return func(
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r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simtypes.Account, chainID string,
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) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
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simAccount, _ := simtypes.RandomAcc(r, accs)
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address := sdk.ValAddress(simAccount.Address)
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// ensure the validator doesn't exist already
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_, found := k.GetValidator(ctx, address)
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if found {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgCreateValidator, "unable to find validator"), nil, nil
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}
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denom := k.GetParams(ctx).BondDenom
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balance := bk.GetBalance(ctx, simAccount.Address, denom).Amount
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if !balance.IsPositive() {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgCreateValidator, "balance is negative"), nil, nil
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}
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amount, err := simtypes.RandPositiveInt(r, balance)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgCreateValidator, "unable to generate positive amount"), nil, err
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}
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selfDelegation := sdk.NewCoin(denom, amount)
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account := ak.GetAccount(ctx, simAccount.Address)
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spendable := bk.SpendableCoins(ctx, account.GetAddress())
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var fees sdk.Coins
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coins, hasNeg := spendable.SafeSub(sdk.Coins{selfDelegation})
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if !hasNeg {
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fees, err = simtypes.RandomFees(r, ctx, coins)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgCreateValidator, "unable to generate fees"), nil, err
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}
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}
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description := types.NewDescription(
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simtypes.RandStringOfLength(r, 10),
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simtypes.RandStringOfLength(r, 10),
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simtypes.RandStringOfLength(r, 10),
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simtypes.RandStringOfLength(r, 10),
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simtypes.RandStringOfLength(r, 10),
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)
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maxCommission := sdk.NewDecWithPrec(int64(simtypes.RandIntBetween(r, 0, 100)), 2)
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commission := types.NewCommissionRates(
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simtypes.RandomDecAmount(r, maxCommission),
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maxCommission,
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simtypes.RandomDecAmount(r, maxCommission),
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)
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msg, err := types.NewMsgCreateValidator(address, simAccount.ConsKey.PubKey(), selfDelegation, description, commission, sdk.OneInt())
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to create CreateValidator message"), nil, err
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}
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txGen := simappparams.MakeTestEncodingConfig().TxConfig
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tx, err := helpers.GenTx(
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txGen,
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[]sdk.Msg{msg},
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fees,
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helpers.DefaultGenTxGas,
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chainID,
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[]uint64{account.GetAccountNumber()},
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[]uint64{account.GetSequence()},
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simAccount.PrivKey,
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)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to generate mock tx"), nil, err
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}
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_, _, err = app.Deliver(txGen.TxEncoder(), tx)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to deliver tx"), nil, err
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}
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return simtypes.NewOperationMsg(msg, true, ""), nil, nil
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}
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}
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// SimulateMsgEditValidator generates a MsgEditValidator with random values
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// nolint: interfacer
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func SimulateMsgEditValidator(ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper) simtypes.Operation {
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return func(
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r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simtypes.Account, chainID string,
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) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
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if len(k.GetAllValidators(ctx)) == 0 {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgEditValidator, "number of validators equal zero"), nil, nil
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}
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val, ok := keeper.RandomValidator(r, k, ctx)
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if !ok {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgEditValidator, "unable to pick a validator"), nil, nil
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}
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address := val.GetOperator()
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newCommissionRate := simtypes.RandomDecAmount(r, val.Commission.MaxRate)
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if err := val.Commission.ValidateNewRate(newCommissionRate, ctx.BlockHeader().Time); err != nil {
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// skip as the commission is invalid
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgEditValidator, "invalid commission rate"), nil, nil
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}
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simAccount, found := simtypes.FindAccount(accs, sdk.AccAddress(val.GetOperator()))
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if !found {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgEditValidator, "unable to find account"), nil, fmt.Errorf("validator %s not found", val.GetOperator())
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}
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account := ak.GetAccount(ctx, simAccount.Address)
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spendable := bk.SpendableCoins(ctx, account.GetAddress())
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fees, err := simtypes.RandomFees(r, ctx, spendable)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgEditValidator, "unable to generate fees"), nil, err
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}
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description := types.NewDescription(
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simtypes.RandStringOfLength(r, 10),
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simtypes.RandStringOfLength(r, 10),
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simtypes.RandStringOfLength(r, 10),
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simtypes.RandStringOfLength(r, 10),
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simtypes.RandStringOfLength(r, 10),
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)
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msg := types.NewMsgEditValidator(address, description, &newCommissionRate, nil)
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txGen := simappparams.MakeTestEncodingConfig().TxConfig
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tx, err := helpers.GenTx(
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txGen,
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[]sdk.Msg{msg},
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fees,
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helpers.DefaultGenTxGas,
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chainID,
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[]uint64{account.GetAccountNumber()},
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[]uint64{account.GetSequence()},
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simAccount.PrivKey,
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)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to generate mock tx"), nil, err
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}
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_, _, err = app.Deliver(txGen.TxEncoder(), tx)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to deliver tx"), nil, err
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}
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return simtypes.NewOperationMsg(msg, true, ""), nil, nil
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}
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}
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// SimulateMsgDelegate generates a MsgDelegate with random values
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// nolint: interfacer
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func SimulateMsgDelegate(ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper) simtypes.Operation {
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return func(
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r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simtypes.Account, chainID string,
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) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
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denom := k.GetParams(ctx).BondDenom
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if len(k.GetAllValidators(ctx)) == 0 {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgDelegate, "number of validators equal zero"), nil, nil
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}
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simAccount, _ := simtypes.RandomAcc(r, accs)
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val, ok := keeper.RandomValidator(r, k, ctx)
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if !ok {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgDelegate, "unable to pick a validator"), nil, nil
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}
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if val.InvalidExRate() {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgDelegate, "validator's invalid echange rate"), nil, nil
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}
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amount := bk.GetBalance(ctx, simAccount.Address, denom).Amount
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if !amount.IsPositive() {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgDelegate, "balance is negative"), nil, nil
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}
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amount, err := simtypes.RandPositiveInt(r, amount)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgDelegate, "unable to generate positive amount"), nil, err
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}
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bondAmt := sdk.NewCoin(denom, amount)
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account := ak.GetAccount(ctx, simAccount.Address)
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spendable := bk.SpendableCoins(ctx, account.GetAddress())
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var fees sdk.Coins
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coins, hasNeg := spendable.SafeSub(sdk.Coins{bondAmt})
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if !hasNeg {
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fees, err = simtypes.RandomFees(r, ctx, coins)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgDelegate, "unable to generate fees"), nil, err
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}
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}
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msg := types.NewMsgDelegate(simAccount.Address, val.GetOperator(), bondAmt)
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txGen := simappparams.MakeTestEncodingConfig().TxConfig
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tx, err := helpers.GenTx(
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txGen,
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[]sdk.Msg{msg},
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fees,
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helpers.DefaultGenTxGas,
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chainID,
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[]uint64{account.GetAccountNumber()},
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[]uint64{account.GetSequence()},
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simAccount.PrivKey,
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)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to generate mock tx"), nil, err
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}
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_, _, err = app.Deliver(txGen.TxEncoder(), tx)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to deliver tx"), nil, err
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}
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return simtypes.NewOperationMsg(msg, true, ""), nil, nil
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}
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}
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// SimulateMsgUndelegate generates a MsgUndelegate with random values
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// nolint: interfacer
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func SimulateMsgUndelegate(ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper) simtypes.Operation {
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return func(
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r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simtypes.Account, chainID string,
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) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
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// get random validator
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validator, ok := keeper.RandomValidator(r, k, ctx)
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if !ok {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgUndelegate, "validator is not ok"), nil, nil
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}
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valAddr := validator.GetOperator()
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delegations := k.GetValidatorDelegations(ctx, validator.GetOperator())
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if delegations == nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgUndelegate, "keeper does have any delegation entries"), nil, nil
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}
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// get random delegator from validator
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delegation := delegations[r.Intn(len(delegations))]
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delAddr := delegation.GetDelegatorAddr()
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if k.HasMaxUnbondingDelegationEntries(ctx, delAddr, valAddr) {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgUndelegate, "keeper does have a max unbonding delegation entries"), nil, nil
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}
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totalBond := validator.TokensFromShares(delegation.GetShares()).TruncateInt()
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if !totalBond.IsPositive() {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgUndelegate, "total bond is negative"), nil, nil
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}
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unbondAmt, err := simtypes.RandPositiveInt(r, totalBond)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgUndelegate, "invalid unbond amount"), nil, err
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}
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if unbondAmt.IsZero() {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgUndelegate, "unbond amount is zero"), nil, nil
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}
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msg := types.NewMsgUndelegate(
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delAddr, valAddr, sdk.NewCoin(k.BondDenom(ctx), unbondAmt),
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)
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// need to retrieve the simulation account associated with delegation to retrieve PrivKey
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var simAccount simtypes.Account
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for _, simAcc := range accs {
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if simAcc.Address.Equals(delAddr) {
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simAccount = simAcc
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break
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}
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}
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// if simaccount.PrivKey == nil, delegation address does not exist in accs. Return error
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if simAccount.PrivKey == nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "account private key is nil"), nil, fmt.Errorf("delegation addr: %s does not exist in simulation accounts", delAddr)
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}
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account := ak.GetAccount(ctx, delAddr)
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spendable := bk.SpendableCoins(ctx, account.GetAddress())
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fees, err := simtypes.RandomFees(r, ctx, spendable)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to generate fees"), nil, err
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}
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txGen := simappparams.MakeTestEncodingConfig().TxConfig
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tx, err := helpers.GenTx(
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txGen,
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[]sdk.Msg{msg},
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fees,
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helpers.DefaultGenTxGas,
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chainID,
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[]uint64{account.GetAccountNumber()},
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[]uint64{account.GetSequence()},
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simAccount.PrivKey,
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)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to generate mock tx"), nil, err
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}
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_, _, err = app.Deliver(txGen.TxEncoder(), tx)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to deliver tx"), nil, err
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}
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return simtypes.NewOperationMsg(msg, true, ""), nil, nil
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}
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}
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// SimulateMsgBeginRedelegate generates a MsgBeginRedelegate with random values
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// nolint: interfacer
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func SimulateMsgBeginRedelegate(ak types.AccountKeeper, bk types.BankKeeper, k keeper.Keeper) simtypes.Operation {
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return func(
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r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simtypes.Account, chainID string,
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) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
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// get random source validator
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srcVal, ok := keeper.RandomValidator(r, k, ctx)
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if !ok {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "unable to pick validator"), nil, nil
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}
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srcAddr := srcVal.GetOperator()
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delegations := k.GetValidatorDelegations(ctx, srcAddr)
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if delegations == nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "keeper does have any delegation entries"), nil, nil
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}
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// get random delegator from src validator
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delegation := delegations[r.Intn(len(delegations))]
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delAddr := delegation.GetDelegatorAddr()
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if k.HasReceivingRedelegation(ctx, delAddr, srcAddr) {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "receveing redelegation is not allowed"), nil, nil // skip
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}
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// get random destination validator
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destVal, ok := keeper.RandomValidator(r, k, ctx)
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if !ok {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "unable to pick validator"), nil, nil
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}
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destAddr := destVal.GetOperator()
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if srcAddr.Equals(destAddr) || destVal.InvalidExRate() || k.HasMaxRedelegationEntries(ctx, delAddr, srcAddr, destAddr) {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "checks failed"), nil, nil
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}
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totalBond := srcVal.TokensFromShares(delegation.GetShares()).TruncateInt()
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if !totalBond.IsPositive() {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "total bond is negative"), nil, nil
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}
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redAmt, err := simtypes.RandPositiveInt(r, totalBond)
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if err != nil {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "unable to generate positive amount"), nil, err
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}
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if redAmt.IsZero() {
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return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "amount is zero"), nil, nil
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}
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|
|
// check if the shares truncate to zero
|
|
shares, err := srcVal.SharesFromTokens(redAmt)
|
|
if err != nil {
|
|
return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "invalid shares"), nil, err
|
|
}
|
|
|
|
if srcVal.TokensFromShares(shares).TruncateInt().IsZero() {
|
|
return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "shares truncate to zero"), nil, nil // skip
|
|
}
|
|
|
|
// need to retrieve the simulation account associated with delegation to retrieve PrivKey
|
|
var simAccount simtypes.Account
|
|
|
|
for _, simAcc := range accs {
|
|
if simAcc.Address.Equals(delAddr) {
|
|
simAccount = simAcc
|
|
break
|
|
}
|
|
}
|
|
|
|
// if simaccount.PrivKey == nil, delegation address does not exist in accs. Return error
|
|
if simAccount.PrivKey == nil {
|
|
return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "account private key is nil"), nil, fmt.Errorf("delegation addr: %s does not exist in simulation accounts", delAddr)
|
|
}
|
|
|
|
account := ak.GetAccount(ctx, delAddr)
|
|
spendable := bk.SpendableCoins(ctx, account.GetAddress())
|
|
|
|
fees, err := simtypes.RandomFees(r, ctx, spendable)
|
|
if err != nil {
|
|
return simtypes.NoOpMsg(types.ModuleName, types.TypeMsgBeginRedelegate, "unable to generate fees"), nil, err
|
|
}
|
|
|
|
msg := types.NewMsgBeginRedelegate(
|
|
delAddr, srcAddr, destAddr,
|
|
sdk.NewCoin(k.BondDenom(ctx), redAmt),
|
|
)
|
|
|
|
txGen := simappparams.MakeTestEncodingConfig().TxConfig
|
|
tx, err := helpers.GenTx(
|
|
txGen,
|
|
[]sdk.Msg{msg},
|
|
fees,
|
|
helpers.DefaultGenTxGas,
|
|
chainID,
|
|
[]uint64{account.GetAccountNumber()},
|
|
[]uint64{account.GetSequence()},
|
|
simAccount.PrivKey,
|
|
)
|
|
if err != nil {
|
|
return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to generate mock tx"), nil, err
|
|
}
|
|
|
|
_, _, err = app.Deliver(txGen.TxEncoder(), tx)
|
|
if err != nil {
|
|
return simtypes.NoOpMsg(types.ModuleName, msg.Type(), "unable to deliver tx"), nil, err
|
|
}
|
|
|
|
return simtypes.NewOperationMsg(msg, true, ""), nil, nil
|
|
}
|
|
}
|