forked from evmos/ethermint
/
utils.go
169 lines (142 loc) · 5.64 KB
/
utils.go
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package app
import (
"encoding/json"
"math/rand"
"time"
"github.com/cosmos/cosmos-sdk/codec"
"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
"github.com/cosmos/cosmos-sdk/simapp"
"github.com/cosmos/cosmos-sdk/types/module"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
"github.com/oracleNetworkProtocol/ethermint/encoding"
ethermint "github.com/oracleNetworkProtocol/ethermint/types"
evmtypes "github.com/oracleNetworkProtocol/ethermint/x/evm/types"
"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
sdk "github.com/cosmos/cosmos-sdk/types"
simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/oracleNetworkProtocol/ethermint/crypto/ethsecp256k1"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/libs/log"
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
tmtypes "github.com/tendermint/tendermint/types"
dbm "github.com/tendermint/tm-db"
)
// DefaultConsensusParams defines the default Tendermint consensus params used in
// EthermintApp testing.
var DefaultConsensusParams = &abci.ConsensusParams{
Block: &abci.BlockParams{
MaxBytes: 200000,
MaxGas: -1, // no limit
},
Evidence: &tmproto.EvidenceParams{
MaxAgeNumBlocks: 302400,
MaxAgeDuration: 504 * time.Hour, // 3 weeks is the max duration
MaxBytes: 10000,
},
Validator: &tmproto.ValidatorParams{
PubKeyTypes: []string{
tmtypes.ABCIPubKeyTypeEd25519,
},
},
}
// Setup initializes a new EthermintApp. A Nop logger is set in EthermintApp.
func Setup(isCheckTx bool, patchGenesis func(*EthermintApp, simapp.GenesisState) simapp.GenesisState) *EthermintApp {
db := dbm.NewMemDB()
app := NewEthermintApp(log.NewNopLogger(), db, nil, true, map[int64]bool{}, DefaultNodeHome, 5, encoding.MakeConfig(ModuleBasics), simapp.EmptyAppOptions{})
if !isCheckTx {
// init chain must be called to stop deliverState from being nil
genesisState := NewDefaultGenesisState()
if patchGenesis != nil {
genesisState = patchGenesis(app, genesisState)
}
stateBytes, err := json.MarshalIndent(genesisState, "", " ")
if err != nil {
panic(err)
}
// Initialize the chain
app.InitChain(
abci.RequestInitChain{
ChainId: "ethermint_9000-1",
Validators: []abci.ValidatorUpdate{},
ConsensusParams: DefaultConsensusParams,
AppStateBytes: stateBytes,
},
)
}
return app
}
// RandomGenesisAccounts is used by the auth module to create random genesis accounts in simulation when a genesis.json is not specified.
// In contrast, the default auth module's RandomGenesisAccounts implementation creates only base accounts and vestings accounts.
func RandomGenesisAccounts(simState *module.SimulationState) authtypes.GenesisAccounts {
emptyCodeHash := crypto.Keccak256(nil)
genesisAccs := make(authtypes.GenesisAccounts, len(simState.Accounts))
for i, acc := range simState.Accounts {
bacc := authtypes.NewBaseAccountWithAddress(acc.Address)
ethacc := ðermint.EthAccount{
BaseAccount: bacc,
CodeHash: common.BytesToHash(emptyCodeHash).String(),
}
genesisAccs[i] = ethacc
}
return genesisAccs
}
// RandomAccounts creates random accounts with an ethsecp256k1 private key
// TODO: replace secp256k1.GenPrivKeyFromSecret() with similar function in go-ethereum
func RandomAccounts(r *rand.Rand, n int) []simtypes.Account {
accs := make([]simtypes.Account, n)
for i := 0; i < n; i++ {
// don't need that much entropy for simulation
privkeySeed := make([]byte, 15)
_, _ = r.Read(privkeySeed)
prv := secp256k1.GenPrivKeyFromSecret(privkeySeed)
ethPrv := ðsecp256k1.PrivKey{}
_ = ethPrv.UnmarshalAmino(prv.Bytes()) // UnmarshalAmino simply copies the bytes and assigns them to ethPrv.Key
accs[i].PrivKey = ethPrv
accs[i].PubKey = accs[i].PrivKey.PubKey()
accs[i].Address = sdk.AccAddress(accs[i].PubKey.Address())
accs[i].ConsKey = ed25519.GenPrivKeyFromSecret(privkeySeed)
}
return accs
}
// StateFn returns the initial application state using a genesis or the simulation parameters.
// It is a wrapper of simapp.AppStateFn to replace evm param EvmDenom with staking param BondDenom.
func StateFn(cdc codec.JSONCodec, simManager *module.SimulationManager) simtypes.AppStateFn {
return func(r *rand.Rand, accs []simtypes.Account, config simtypes.Config,
) (appState json.RawMessage, simAccs []simtypes.Account, chainID string, genesisTimestamp time.Time) {
appStateFn := simapp.AppStateFn(cdc, simManager)
appState, simAccs, chainID, genesisTimestamp = appStateFn(r, accs, config)
rawState := make(map[string]json.RawMessage)
err := json.Unmarshal(appState, &rawState)
if err != nil {
panic(err)
}
stakingStateBz, ok := rawState[stakingtypes.ModuleName]
if !ok {
panic("staking genesis state is missing")
}
stakingState := new(stakingtypes.GenesisState)
cdc.MustUnmarshalJSON(stakingStateBz, stakingState)
// we should get the BondDenom and make it the evmdenom.
// thus simulation accounts could have positive amount of gas token.
bondDenom := stakingState.Params.BondDenom
evmStateBz, ok := rawState[evmtypes.ModuleName]
if !ok {
panic("staking genesis state is missing")
}
evmState := new(evmtypes.GenesisState)
cdc.MustUnmarshalJSON(evmStateBz, evmState)
// we should replace the EvmDenom with BondDenom
evmState.Params.EvmDenom = bondDenom
// change appState back
rawState[evmtypes.ModuleName] = cdc.MustMarshalJSON(evmState)
// replace appstate
appState, err = json.Marshal(rawState)
if err != nil {
panic(err)
}
return appState, simAccs, chainID, genesisTimestamp
}
}