-
Notifications
You must be signed in to change notification settings - Fork 236
/
state.go
266 lines (227 loc) · 7.83 KB
/
state.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
package app
import (
"encoding/json"
"fmt"
"io"
"math/rand"
"os"
"time"
sdkmath "cosmossdk.io/math"
tmjson "github.com/tendermint/tendermint/libs/json"
tmtypes "github.com/tendermint/tendermint/types"
"github.com/cosmos/cosmos-sdk/codec"
"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
"github.com/cosmos/cosmos-sdk/simapp"
simappparams "github.com/cosmos/cosmos-sdk/simapp/params"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/types/module"
simtypes "github.com/cosmos/cosmos-sdk/types/simulation"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
evmtypes "github.com/evmos/ethermint/x/evm/types"
)
// StateFn returns the initial application state using a genesis or the simulation parameters.
// It panics if the user provides files for both of them.
// If a file is not given for the genesis or the sim params, it creates a randomized one.
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) {
if simapp.FlagGenesisTimeValue == 0 {
genesisTimestamp = simtypes.RandTimestamp(r)
} else {
genesisTimestamp = time.Unix(simapp.FlagGenesisTimeValue, 0)
}
chainID = config.ChainID
switch {
case config.ParamsFile != "" && config.GenesisFile != "":
panic("cannot provide both a genesis file and a params file")
case config.GenesisFile != "":
// override the default chain-id from simapp to set it later to the config
genesisDoc, accounts := StateFromGenesisFileFn(r, cdc, config.GenesisFile)
if simapp.FlagGenesisTimeValue == 0 {
// use genesis timestamp if no custom timestamp is provided (i.e no random timestamp)
genesisTimestamp = genesisDoc.GenesisTime
}
appState = genesisDoc.AppState
chainID = genesisDoc.ChainID
simAccs = accounts
case config.ParamsFile != "":
appParams := make(simtypes.AppParams)
bz, err := os.ReadFile(config.ParamsFile)
if err != nil {
panic(err)
}
err = json.Unmarshal(bz, &appParams)
if err != nil {
panic(err)
}
appState, simAccs = StateRandomizedFn(simManager, r, cdc, accs, genesisTimestamp, appParams)
default:
appParams := make(simtypes.AppParams)
appState, simAccs = StateRandomizedFn(simManager, r, cdc, accs, genesisTimestamp, appParams)
}
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)
err = cdc.UnmarshalJSON(stakingStateBz, stakingState)
if err != nil {
panic(err)
}
// compute not bonded balance
notBondedTokens := sdk.ZeroInt()
for _, val := range stakingState.Validators {
if val.Status != stakingtypes.Unbonded {
continue
}
notBondedTokens = notBondedTokens.Add(val.GetTokens())
}
notBondedCoins := sdk.NewCoin(stakingState.Params.BondDenom, notBondedTokens)
// edit bank state to make it have the not bonded pool tokens
bankStateBz, ok := rawState[banktypes.ModuleName]
// TODO(fdymylja/jonathan): should we panic in this case
if !ok {
panic("bank genesis state is missing")
}
bankState := new(banktypes.GenesisState)
err = cdc.UnmarshalJSON(bankStateBz, bankState)
if err != nil {
panic(err)
}
stakingAddr := authtypes.NewModuleAddress(stakingtypes.NotBondedPoolName).String()
var found bool
for _, balance := range bankState.Balances {
if balance.Address == stakingAddr {
found = true
break
}
}
if !found {
bankState.Balances = append(bankState.Balances, banktypes.Balance{
Address: stakingAddr,
Coins: sdk.NewCoins(notBondedCoins),
})
}
// 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("evm 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[stakingtypes.ModuleName] = cdc.MustMarshalJSON(stakingState)
rawState[banktypes.ModuleName] = cdc.MustMarshalJSON(bankState)
rawState[evmtypes.ModuleName] = cdc.MustMarshalJSON(evmState)
// replace appstate
appState, err = json.Marshal(rawState)
if err != nil {
panic(err)
}
return appState, simAccs, chainID, genesisTimestamp
}
}
// StateRandomizedFn creates calls each module's GenesisState generator function
// and creates the simulation params
func StateRandomizedFn(
simManager *module.SimulationManager, r *rand.Rand, cdc codec.JSONCodec,
accs []simtypes.Account, genesisTimestamp time.Time, appParams simtypes.AppParams,
) (json.RawMessage, []simtypes.Account) {
numAccs := int64(len(accs))
// test with experimental modules by default
genesisState := NewDefaultGenesisState(cdc, true)
// generate a random amount of initial stake coins and a random initial
// number of bonded accounts
var (
numInitiallyBonded int64
initialStake sdkmath.Int
)
appParams.GetOrGenerate(
cdc, simappparams.StakePerAccount, &initialStake, r,
func(r *rand.Rand) { initialStake = sdkmath.NewInt(r.Int63n(1e12)) },
)
appParams.GetOrGenerate(
cdc, simappparams.InitiallyBondedValidators, &numInitiallyBonded, r,
func(r *rand.Rand) { numInitiallyBonded = int64(r.Intn(300)) },
)
if numInitiallyBonded > numAccs {
numInitiallyBonded = numAccs
}
fmt.Printf(
`Selected randomly generated parameters for simulated genesis:
{
stake_per_account: "%d",
initially_bonded_validators: "%d"
}
`, initialStake, numInitiallyBonded,
)
simState := &module.SimulationState{
AppParams: appParams,
Cdc: cdc,
Rand: r,
GenState: genesisState,
Accounts: accs,
InitialStake: initialStake,
NumBonded: numInitiallyBonded,
GenTimestamp: genesisTimestamp,
}
simManager.GenerateGenesisStates(simState)
appState, err := json.Marshal(genesisState)
if err != nil {
panic(err)
}
return appState, accs
}
// StateFromGenesisFileFn util function to generate the genesis AppState
// from a genesis.json file.
func StateFromGenesisFileFn(r io.Reader, cdc codec.JSONCodec, genesisFile string) (tmtypes.GenesisDoc, []simtypes.Account) {
bytes, err := os.ReadFile(genesisFile)
if err != nil {
panic(err)
}
var genesis tmtypes.GenesisDoc
// NOTE: Tendermint uses a custom JSON decoder for GenesisDoc
err = tmjson.Unmarshal(bytes, &genesis)
if err != nil {
panic(err)
}
var appState GenesisState
err = json.Unmarshal(genesis.AppState, &appState)
if err != nil {
panic(err)
}
var authGenesis authtypes.GenesisState
if appState[authtypes.ModuleName] != nil {
cdc.MustUnmarshalJSON(appState[authtypes.ModuleName], &authGenesis)
}
newAccs := make([]simtypes.Account, len(authGenesis.Accounts))
for i, acc := range authGenesis.Accounts {
// Pick a random private key, since we don't know the actual key
// This should be fine as it's only used for mock Tendermint validators
// and these keys are never actually used to sign by mock Tendermint.
privkeySeed := make([]byte, 15)
if _, err := r.Read(privkeySeed); err != nil {
panic(err)
}
privKey := secp256k1.GenPrivKeyFromSecret(privkeySeed)
a, ok := acc.GetCachedValue().(authtypes.AccountI)
if !ok {
panic("expected account")
}
// create simulator accounts
simAcc := simtypes.Account{PrivKey: privKey, PubKey: privKey.PubKey(), Address: a.GetAddress()}
newAccs[i] = simAcc
}
return genesis, newAccs
}