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operations.go
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operations.go
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package simulation
import (
"errors"
"math/rand"
"github.com/okex/exchain/libs/cosmos-sdk/baseapp"
"github.com/okex/exchain/libs/cosmos-sdk/codec"
"github.com/okex/exchain/libs/cosmos-sdk/simapp/helpers"
simappparams "github.com/okex/exchain/libs/cosmos-sdk/simapp/params"
sdk "github.com/okex/exchain/libs/cosmos-sdk/types"
"github.com/okex/exchain/libs/cosmos-sdk/x/simulation"
"github.com/okex/exchain/libs/cosmos-sdk/x/slashing/internal/keeper"
"github.com/okex/exchain/libs/cosmos-sdk/x/slashing/internal/types"
stakingkeeper "github.com/okex/exchain/libs/cosmos-sdk/x/staking/keeper"
)
// Simulation operation weights constants
const (
OpWeightMsgUnjail = "op_weight_msg_unjail"
)
// WeightedOperations returns all the operations from the module with their respective weights
func WeightedOperations(
appParams simulation.AppParams, cdc *codec.Codec, ak types.AccountKeeper,
k keeper.Keeper, sk stakingkeeper.Keeper,
) simulation.WeightedOperations {
var weightMsgUnjail int
appParams.GetOrGenerate(cdc, OpWeightMsgUnjail, &weightMsgUnjail, nil,
func(_ *rand.Rand) {
weightMsgUnjail = simappparams.DefaultWeightMsgUnjail
},
)
return simulation.WeightedOperations{
simulation.NewWeightedOperation(
weightMsgUnjail,
SimulateMsgUnjail(ak, k, sk),
),
}
}
// SimulateMsgUnjail generates a MsgUnjail with random values
// nolint: funlen
func SimulateMsgUnjail(ak types.AccountKeeper, k keeper.Keeper, sk stakingkeeper.Keeper) simulation.Operation { // nolint:interfacer
return func(
r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context,
accs []simulation.Account, chainID string,
) (simulation.OperationMsg, []simulation.FutureOperation, error) {
validator, ok := stakingkeeper.RandomValidator(r, sk, ctx)
if !ok {
return simulation.NoOpMsg(types.ModuleName), nil, nil // skip
}
simAccount, found := simulation.FindAccount(accs, sdk.AccAddress(validator.GetOperator()))
if !found {
return simulation.NoOpMsg(types.ModuleName), nil, nil // skip
}
if !validator.IsJailed() {
// TODO: due to this condition this message is almost, if not always, skipped !
return simulation.NoOpMsg(types.ModuleName), nil, nil
}
consAddr := sdk.ConsAddress(validator.GetConsPubKey().Address())
info, found := k.GetValidatorSigningInfo(ctx, consAddr)
if !found {
return simulation.NoOpMsg(types.ModuleName), nil, nil // skip
}
selfDel := sk.Delegation(ctx, simAccount.Address, validator.GetOperator())
if selfDel == nil {
return simulation.NoOpMsg(types.ModuleName), nil, nil // skip
}
account := ak.GetAccount(ctx, sdk.AccAddress(validator.GetOperator()))
fees, err := simulation.RandomFees(r, ctx, account.SpendableCoins(ctx.BlockTime()))
if err != nil {
return simulation.NoOpMsg(types.ModuleName), nil, err
}
msg := types.NewMsgUnjail(validator.GetOperator())
tx := helpers.GenTx(
[]sdk.Msg{msg},
fees,
helpers.DefaultGenTxGas,
chainID,
[]uint64{account.GetAccountNumber()},
[]uint64{account.GetSequence()},
simAccount.PrivKey,
)
_, res, err := app.Deliver(tx)
// result should fail if:
// - validator cannot be unjailed due to tombstone
// - validator is still in jailed period
// - self delegation too low
if info.Tombstoned ||
ctx.BlockHeader().Time.Before(info.JailedUntil) ||
validator.TokensFromShares(selfDel.GetShares()).TruncateInt().LT(validator.GetMinSelfDelegation()) {
if res != nil && err == nil {
if info.Tombstoned {
return simulation.NewOperationMsg(msg, true, ""), nil, errors.New("validator should not have been unjailed if validator tombstoned")
}
if ctx.BlockHeader().Time.Before(info.JailedUntil) {
return simulation.NewOperationMsg(msg, true, ""), nil, errors.New("validator unjailed while validator still in jail period")
}
if validator.TokensFromShares(selfDel.GetShares()).TruncateInt().LT(validator.GetMinSelfDelegation()) {
return simulation.NewOperationMsg(msg, true, ""), nil, errors.New("validator unjailed even though self-delegation too low")
}
}
// msg failed as expected
return simulation.NewOperationMsg(msg, false, ""), nil, nil
}
if err != nil {
return simulation.NoOpMsg(types.ModuleName), nil, errors.New(res.Log)
}
return simulation.NewOperationMsg(msg, true, ""), nil, nil
}
}