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bridge_stop_resume.go
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bridge_stop_resume.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 banking
import (
"context"
"code.vegaprotocol.io/vega/core/types"
)
func (e *Engine) BridgeStopped(_ context.Context, stopped bool, id string, block uint64, logIndex uint64, ethTxHash string, chainID string) error {
bridgeView, err := e.bridgeViewForChainID(chainID)
if err != nil {
return err
}
aa := &assetAction{
id: id,
state: newPendingState(),
blockHeight: block,
logIndex: logIndex,
txHash: ethTxHash,
chainID: chainID,
erc20BridgeStopped: &types.ERC20EventBridgeStopped{BridgeStopped: stopped},
bridgeView: bridgeView,
}
e.assetActions[aa.id] = aa
return e.witness.StartCheck(aa, e.onCheckDone, e.timeService.GetTimeNow().Add(defaultValidationDuration))
}
func (e *Engine) BridgeResumed(_ context.Context, resumed bool, id string, block uint64, logIndex uint64, ethTxHash string, chainID string) error {
bridgeView, err := e.bridgeViewForChainID(chainID)
if err != nil {
return err
}
aa := &assetAction{
id: id,
state: newPendingState(),
erc20BridgeResumed: &types.ERC20EventBridgeResumed{BridgeResumed: resumed},
blockHeight: block,
logIndex: logIndex,
txHash: ethTxHash,
chainID: chainID,
bridgeView: bridgeView,
}
e.assetActions[aa.id] = aa
return e.witness.StartCheck(aa, e.onCheckDone, e.timeService.GetTimeNow().Add(defaultValidationDuration))
}
type bridgeState struct {
// is the operation suspended, or as usual
active bool
// last block + log index we received an update from the bridge
// this will be used later to verify no new state of the bridge is processed
// in a wrong order.
block, logIndex uint64
}
func (b *bridgeState) IsStopped() bool {
return !b.active
}
func (b *bridgeState) NewBridgeStopped(
block, logIndex uint64,
) {
if b.isNewerEvent(block, logIndex) {
b.active, b.block, b.logIndex = false, block, logIndex
}
}
func (b *bridgeState) NewBridgeResumed(
block, logIndex uint64,
) {
if b.isNewerEvent(block, logIndex) {
b.active, b.block, b.logIndex = true, block, logIndex
}
}
func (b *bridgeState) isNewerEvent(
block, logIndex uint64,
) bool {
if block == b.block {
return logIndex > b.logIndex
}
return block > b.block
}