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operations.go
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operations.go
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package simulation
import (
"math/rand"
"github.com/cosmos/cosmos-sdk/baseapp"
"github.com/cosmos/cosmos-sdk/codec"
cdctypes "github.com/cosmos/cosmos-sdk/codec/types"
"github.com/cosmos/cosmos-sdk/simapp/helpers"
simappparams "github.com/cosmos/cosmos-sdk/simapp/params"
sdk "github.com/cosmos/cosmos-sdk/types"
simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
"github.com/cosmos/cosmos-sdk/x/nft"
"github.com/cosmos/cosmos-sdk/x/nft/keeper"
"github.com/cosmos/cosmos-sdk/x/simulation"
)
const (
// OpWeightMsgSend Simulation operation weights constants
OpWeightMsgSend = "op_weight_msg_send"
)
const (
// WeightSend nft operations weights
WeightSend = 100
)
var TypeMsgSend = sdk.MsgTypeURL(&nft.MsgSend{})
// WeightedOperations returns all the operations from the module with their respective weights
func WeightedOperations(
registry cdctypes.InterfaceRegistry,
appParams simtypes.AppParams,
cdc codec.JSONCodec,
ak nft.AccountKeeper,
bk nft.BankKeeper,
k keeper.Keeper,
) simulation.WeightedOperations {
var weightMsgSend int
appParams.GetOrGenerate(cdc, OpWeightMsgSend, &weightMsgSend, nil,
func(_ *rand.Rand) {
weightMsgSend = WeightSend
},
)
return simulation.WeightedOperations{
simulation.NewWeightedOperation(
weightMsgSend,
SimulateMsgSend(codec.NewProtoCodec(registry), ak, bk, k),
),
}
}
// SimulateMsgSend generates a MsgSend with random values.
func SimulateMsgSend(
cdc *codec.ProtoCodec,
ak nft.AccountKeeper,
bk nft.BankKeeper,
k keeper.Keeper,
) simtypes.Operation {
return func(
r *rand.Rand, app *baseapp.BaseApp, ctx sdk.Context, accs []simtypes.Account, chainID string,
) (simtypes.OperationMsg, []simtypes.FutureOperation, error) {
sender, _ := simtypes.RandomAcc(r, accs)
receiver, _ := simtypes.RandomAcc(r, accs)
if sender.Address.Equals(receiver.Address) {
return simtypes.NoOpMsg(nft.ModuleName, TypeMsgSend, "sender and receiver are same"), nil, nil
}
senderAcc := ak.GetAccount(ctx, sender.Address)
spendableCoins := bk.SpendableCoins(ctx, sender.Address)
fees, err := simtypes.RandomFees(r, ctx, spendableCoins)
if err != nil {
return simtypes.NoOpMsg(nft.ModuleName, TypeMsgSend, err.Error()), nil, err
}
spendLimit := spendableCoins.Sub(fees...)
if spendLimit == nil {
return simtypes.NoOpMsg(nft.ModuleName, TypeMsgSend, "spend limit is nil"), nil, nil
}
n, err := randNFT(ctx, r, k, senderAcc.GetAddress())
if err != nil {
return simtypes.NoOpMsg(nft.ModuleName, TypeMsgSend, err.Error()), nil, err
}
msg := &nft.MsgSend{
ClassId: n.ClassId,
Id: n.Id,
Sender: senderAcc.GetAddress().String(),
Receiver: receiver.Address.String(),
}
txCfg := simappparams.MakeTestEncodingConfig().TxConfig
tx, err := helpers.GenSignedMockTx(
txCfg,
[]sdk.Msg{msg},
fees,
helpers.DefaultGenTxGas,
chainID,
[]uint64{senderAcc.GetAccountNumber()},
[]uint64{senderAcc.GetSequence()},
sender.PrivKey,
)
if err != nil {
return simtypes.NoOpMsg(nft.ModuleName, TypeMsgSend, "unable to generate mock tx"), nil, err
}
_, _, err = app.SimDeliver(txCfg.TxEncoder(), tx)
if err != nil {
return simtypes.NoOpMsg(nft.ModuleName, sdk.MsgTypeURL(msg), "unable to deliver tx"), nil, err
}
return simtypes.NewOperationMsg(msg, true, "", cdc), nil, err
}
}
func randNFT(ctx sdk.Context, r *rand.Rand, k keeper.Keeper, minter sdk.AccAddress) (nft.NFT, error) {
c, err := randClass(ctx, r, k)
if err != nil {
return nft.NFT{}, err
}
ns := k.GetNFTsOfClassByOwner(ctx, c.Id, minter)
if len(ns) > 0 {
return ns[r.Intn(len(ns))], nil
}
n := nft.NFT{
ClassId: c.Id,
Id: simtypes.RandStringOfLength(r, 10),
Uri: simtypes.RandStringOfLength(r, 10),
}
err = k.Mint(ctx, n, minter)
if err != nil {
return nft.NFT{}, err
}
return n, nil
}
func randClass(ctx sdk.Context, r *rand.Rand, k keeper.Keeper) (nft.Class, error) {
classes := k.GetClasses(ctx)
if len(classes) == 0 {
c := nft.Class{
Id: simtypes.RandStringOfLength(r, 10),
Name: simtypes.RandStringOfLength(r, 10),
Symbol: simtypes.RandStringOfLength(r, 10),
Description: simtypes.RandStringOfLength(r, 10),
Uri: simtypes.RandStringOfLength(r, 10),
}
err := k.SaveClass(ctx, c)
if err != nil {
return nft.Class{}, err
}
return c, nil
}
return *classes[r.Intn(len(classes))], nil
}