forked from zeta-chain/node
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathexport.go
More file actions
253 lines (217 loc) · 7.41 KB
/
export.go
File metadata and controls
253 lines (217 loc) · 7.41 KB
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
package app
import (
"encoding/json"
"errors"
"fmt"
storetypes "cosmossdk.io/store/types"
cmtproto "github.com/cometbft/cometbft/proto/tendermint/types"
servertypes "github.com/cosmos/cosmos-sdk/server/types"
sdk "github.com/cosmos/cosmos-sdk/types"
distributiontypes "github.com/cosmos/cosmos-sdk/x/distribution/types"
slashingtypes "github.com/cosmos/cosmos-sdk/x/slashing/types"
"github.com/cosmos/cosmos-sdk/x/staking"
stakingtypes "github.com/cosmos/cosmos-sdk/x/staking/types"
)
// ExportAppStateAndValidators exports the state of the application for a genesis
// file.
func (app *App) ExportAppStateAndValidators(
forZeroHeight bool, jailAllowedAddrs []string, modulesToExport []string,
) (servertypes.ExportedApp, error) {
ctx := app.NewContextLegacy(true, cmtproto.Header{Height: app.LastBlockHeight()})
// We export at last height + 1, because that's the height at which
// Tendermint will start InitChain.
height := app.LastBlockHeight() + 1
if forZeroHeight {
height = 0
app.prepForZeroHeightGenesis(ctx, jailAllowedAddrs)
}
genState, err := app.mm.ExportGenesisForModules(ctx, app.appCodec, modulesToExport)
if err != nil {
return servertypes.ExportedApp{}, err
}
appState, err := json.MarshalIndent(genState, "", " ")
if err != nil {
return servertypes.ExportedApp{}, err
}
validators, err := staking.WriteValidators(ctx, app.StakingKeeper)
if err != nil {
return servertypes.ExportedApp{}, err
}
return servertypes.ExportedApp{
AppState: appState,
Validators: validators,
Height: height,
ConsensusParams: app.BaseApp.GetConsensusParams(ctx),
}, nil
}
// prepare for fresh start at zero height
// NOTE zero height genesis is a temporary feature which will be deprecated
//
// in favour of export at a block height
func (app *App) prepForZeroHeightGenesis(ctx sdk.Context, jailAllowedAddrs []string) {
applyAllowedAddrs := len(jailAllowedAddrs) > 0
// check if there is a allowed address list
allowedAddrsMap := make(map[string]bool)
for _, addr := range jailAllowedAddrs {
_, err := sdk.ValAddressFromBech32(addr)
if err != nil {
panic(err)
}
allowedAddrsMap[addr] = true
}
/* Handle fee distribution state. */
// withdraw all validator commission
err := app.StakingKeeper.IterateValidators(ctx, func(_ int64, val stakingtypes.ValidatorI) (stop bool) {
valBz, err := app.StakingKeeper.ValidatorAddressCodec().StringToBytes(val.GetOperator())
if err != nil {
panic(err)
}
_, err = app.DistrKeeper.WithdrawValidatorCommission(ctx, valBz)
if !errors.Is(err, distributiontypes.ErrNoValidatorCommission) && err != nil {
panic(err)
}
return false
})
if err != nil {
panic(err)
}
// withdraw all delegator rewards
dels, err := app.StakingKeeper.GetAllDelegations(ctx)
if err != nil {
panic(err)
}
for _, delegation := range dels {
valAddr, err := sdk.ValAddressFromBech32(delegation.ValidatorAddress)
if err != nil {
panic(err)
}
delAddr := sdk.MustAccAddressFromBech32(delegation.DelegatorAddress)
// withdraw rewards if they exist
_, err = app.DistrKeeper.WithdrawDelegationRewards(ctx, delAddr, valAddr)
if err != nil {
panic(err)
}
}
// clear validator slash events
app.DistrKeeper.DeleteAllValidatorSlashEvents(ctx)
// clear validator historical rewards
app.DistrKeeper.DeleteAllValidatorHistoricalRewards(ctx)
// set context height to zero
height := ctx.BlockHeight()
ctx = ctx.WithBlockHeight(0)
// reinitialize all validators
err = app.StakingKeeper.IterateValidators(ctx, func(_ int64, val stakingtypes.ValidatorI) (stop bool) {
valBz, err := app.StakingKeeper.ValidatorAddressCodec().StringToBytes(val.GetOperator())
if err != nil {
panic(err)
}
// donate any unwithdrawn outstanding reward fraction tokens to the community pool
scraps, err := app.DistrKeeper.GetValidatorOutstandingRewardsCoins(ctx, valBz)
if err != nil {
panic(err)
}
feePool, err := app.DistrKeeper.FeePool.Get(ctx)
if err != nil {
panic(err)
}
feePool.CommunityPool = feePool.CommunityPool.Add(scraps...)
if err := app.DistrKeeper.FeePool.Set(ctx, feePool); err != nil {
panic(err)
}
if err := app.DistrKeeper.Hooks().AfterValidatorCreated(ctx, valBz); err != nil {
panic(err)
}
return false
})
// reinitialize all delegations
for _, del := range dels {
valAddr, err := sdk.ValAddressFromBech32(del.ValidatorAddress)
if err != nil {
panic(err)
}
delAddr := sdk.MustAccAddressFromBech32(del.DelegatorAddress)
if err := app.DistrKeeper.Hooks().BeforeDelegationCreated(ctx, delAddr, valAddr); err != nil {
// never called as BeforeDelegationCreated always returns nil
panic(fmt.Errorf("error while incrementing period: %w", err))
}
if err := app.DistrKeeper.Hooks().AfterDelegationModified(ctx, delAddr, valAddr); err != nil {
// never called as AfterDelegationModified always returns nil
panic(fmt.Errorf("error while creating a new delegation period record: %w", err))
}
}
// reset context height
ctx = ctx.WithBlockHeight(height)
/* Handle staking state. */
// iterate through redelegations, reset creation height
err = app.StakingKeeper.IterateRedelegations(ctx, func(_ int64, red stakingtypes.Redelegation) (stop bool) {
for i := range red.Entries {
red.Entries[i].CreationHeight = 0
}
err = app.StakingKeeper.SetRedelegation(ctx, red)
if err != nil {
panic(err)
}
return false
})
if err != nil {
panic(fmt.Errorf("error while iterating redelegations: %w", err))
}
// iterate through unbonding delegations, reset creation height
err = app.StakingKeeper.IterateUnbondingDelegations(ctx,
func(_ int64, ubd stakingtypes.UnbondingDelegation) (stop bool) {
for i := range ubd.Entries {
ubd.Entries[i].CreationHeight = 1
}
err = app.StakingKeeper.SetUnbondingDelegation(ctx, ubd)
if err != nil {
panic(err)
}
return false
})
if err != nil {
panic(fmt.Errorf("error while iterating unbonding delegations: %w", err))
}
// Iterate through validators by power descending, reset bond heights, and
// update bond intra-tx counters.
store := ctx.KVStore(app.GetKey(stakingtypes.StoreKey))
iter := storetypes.KVStoreReversePrefixIterator(store, stakingtypes.ValidatorsKey)
for ; iter.Valid(); iter.Next() {
addr := sdk.ValAddress(stakingtypes.AddressFromValidatorsKey(iter.Key()))
validator, err := app.StakingKeeper.GetValidator(ctx, addr)
if err != nil {
panic("expected validator, not found")
}
validator.UnbondingHeight = 0
if applyAllowedAddrs && !allowedAddrsMap[addr.String()] {
validator.Jailed = true
}
err = app.StakingKeeper.SetValidator(ctx, validator)
if err != nil {
panic(fmt.Errorf("unable to set validator: %w", err))
}
}
if err := iter.Close(); err != nil {
app.Logger().Error("error while closing the key-value store reverse prefix iterator: ", err)
return
}
_, err = app.StakingKeeper.ApplyAndReturnValidatorSetUpdates(ctx)
if err != nil {
panic(fmt.Errorf("validator set update failed: %w", err))
}
/* Handle slashing state. */
// reset start height on signing infos
err = app.SlashingKeeper.IterateValidatorSigningInfos(
ctx,
func(addr sdk.ConsAddress, info slashingtypes.ValidatorSigningInfo) (stop bool) {
info.StartHeight = 0
err = app.SlashingKeeper.SetValidatorSigningInfo(ctx, addr, info)
if err != nil {
panic("unable to set validator signing info")
}
return false
},
)
if err != nil {
panic(fmt.Errorf("error while iterating validator signing info: %w", err))
}
}