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snapshot.go
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snapshot.go
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// Copyright (C) 2023 Gobalsky Labs Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package vesting
import (
"context"
"fmt"
"sort"
"code.vegaprotocol.io/vega/core/types"
"code.vegaprotocol.io/vega/libs/num"
"code.vegaprotocol.io/vega/libs/proto"
"code.vegaprotocol.io/vega/logging"
snapshotpb "code.vegaprotocol.io/vega/protos/vega/snapshot/v1"
)
var VestingKey = (&types.PayloadVesting{}).Key()
type SnapshotEngine struct {
*Engine
}
func NewSnapshotEngine(
log *logging.Logger,
c Collateral,
asvm ActivityStreakVestingMultiplier,
broker Broker,
assets Assets,
parties Parties,
) *SnapshotEngine {
se := &SnapshotEngine{
Engine: New(log, c, asvm, broker, assets, parties),
}
return se
}
func (e *SnapshotEngine) Namespace() types.SnapshotNamespace {
return types.VestingSnapshot
}
func (e *SnapshotEngine) Keys() []string {
return []string{VestingKey}
}
func (e *SnapshotEngine) Stopped() bool {
return false
}
func (e *SnapshotEngine) GetState(k string) ([]byte, []types.StateProvider, error) {
state, err := e.serialise(k)
return state, nil, err
}
func (e *SnapshotEngine) LoadState(ctx context.Context, p *types.Payload) ([]types.StateProvider, error) {
if e.Namespace() != p.Data.Namespace() {
return nil, types.ErrInvalidSnapshotNamespace
}
switch data := p.Data.(type) {
case *types.PayloadVesting:
e.loadStateFromSnapshot(ctx, data.Vesting)
return nil, nil
default:
return nil, types.ErrUnknownSnapshotType
}
}
func (e *SnapshotEngine) loadStateFromSnapshot(_ context.Context, state *snapshotpb.Vesting) {
for _, entry := range state.PartiesReward {
for _, v := range entry.InVesting {
balance, underflow := num.UintFromString(v.Balance, 10)
if underflow {
e.log.Panic("uint256 in snapshot underflow",
logging.String("value", v.Balance))
}
e.increaseVestingBalance(entry.Party, v.Asset, balance)
}
for _, locked := range entry.AssetLocked {
for _, epochBalance := range locked.EpochBalances {
balance, underflow := num.UintFromString(epochBalance.Balance, 10)
if underflow {
e.log.Panic("uint256 in snapshot underflow",
logging.String("value", epochBalance.Balance))
}
e.increaseLockedForAsset(entry.Party, locked.Asset, balance, epochBalance.Epoch)
}
}
}
}
func (e *SnapshotEngine) serialise(k string) ([]byte, error) {
switch k {
case VestingKey:
return e.serialiseAll()
default:
return nil, types.ErrSnapshotKeyDoesNotExist
}
}
func (e *SnapshotEngine) serialiseAll() ([]byte, error) {
out := snapshotpb.Vesting{}
for party, rewardState := range e.state {
partyReward := &snapshotpb.PartyReward{
Party: party,
}
for asset, balance := range rewardState.Vesting {
partyReward.InVesting = append(partyReward.InVesting, &snapshotpb.InVesting{
Asset: asset,
Balance: balance.String(),
})
}
sort.Slice(partyReward.InVesting, func(i, j int) bool {
return partyReward.InVesting[i].Asset < partyReward.InVesting[j].Asset
})
for asset, epochBalances := range rewardState.Locked {
assetLocked := &snapshotpb.AssetLocked{
Asset: asset,
}
for epoch, balance := range epochBalances {
assetLocked.EpochBalances = append(assetLocked.EpochBalances, &snapshotpb.EpochBalance{
Epoch: epoch,
Balance: balance.String(),
})
}
sort.Slice(assetLocked.EpochBalances, func(i, j int) bool {
return assetLocked.EpochBalances[i].Epoch < assetLocked.EpochBalances[j].Epoch
})
partyReward.AssetLocked = append(partyReward.AssetLocked, assetLocked)
}
sort.Slice(partyReward.AssetLocked, func(i, j int) bool {
return partyReward.AssetLocked[i].Asset < partyReward.AssetLocked[j].Asset
})
out.PartiesReward = append(out.PartiesReward, partyReward)
}
sort.Slice(out.PartiesReward, func(i, j int) bool { return out.PartiesReward[i].Party < out.PartiesReward[j].Party })
payload := &snapshotpb.Payload{
Data: &snapshotpb.Payload_Vesting{
Vesting: &out,
},
}
serialized, err := proto.Marshal(payload)
if err != nil {
return nil, fmt.Errorf("could not serialize team switches payload: %w", err)
}
return serialized, nil
}