130 lines
3.5 KiB
Go
130 lines
3.5 KiB
Go
package neofs
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import (
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/nspcc-dev/neofs-node/pkg/morph/client/balance"
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neofsEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/neofs"
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"go.uber.org/zap"
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)
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const (
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// lockAccountLifeTime defines the amount of epochs when lock account is valid.
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lockAccountLifetime uint64 = 20
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)
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// Process deposit event by invoking a balance contract and sending native
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// gas in the sidechain.
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func (np *Processor) processDeposit(deposit *neofsEvent.Deposit) {
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if !np.alphabetState.IsAlphabet() {
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np.log.Info("non alphabet mode, ignore deposit")
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return
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}
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prm := balance.MintPrm{}
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prm.SetTo(deposit.To())
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prm.SetAmount(np.converter.ToBalancePrecision(deposit.Amount()))
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prm.SetID(deposit.ID())
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// send transferX to a balance contract
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err := np.balanceClient.Mint(prm)
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if err != nil {
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np.log.Error("can't transfer assets to balance contract", zap.Error(err))
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}
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curEpoch := np.epochState.EpochCounter()
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receiver := deposit.To()
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// check if the receiver has already received some mint GAS emissions
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// we should lock there even though LRU cache is already thread save
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// we lock there because GAS transfer AND cache update must be atomic
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np.mintEmitLock.Lock()
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defer np.mintEmitLock.Unlock()
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val, ok := np.mintEmitCache.Get(receiver.String())
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if ok && val.(uint64)+np.mintEmitThreshold >= curEpoch {
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np.log.Warn("double mint emission declined",
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zap.String("receiver", receiver.String()),
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zap.Uint64("last_emission", val.(uint64)),
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zap.Uint64("current_epoch", curEpoch))
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return
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}
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// get gas balance of the node
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// before gas transfer check if the balance is greater than the threshold
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balance, err := np.morphClient.GasBalance()
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if err != nil {
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np.log.Error("can't get gas balance of the node", zap.Error(err))
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return
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}
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if balance < np.gasBalanceThreshold {
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np.log.Warn("gas balance threshold has been reached",
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zap.Int64("balance", balance),
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zap.Int64("threshold", np.gasBalanceThreshold))
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return
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}
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err = np.morphClient.TransferGas(receiver, np.mintEmitValue)
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if err != nil {
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np.log.Error("can't transfer native gas to receiver",
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zap.String("error", err.Error()))
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return
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}
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np.mintEmitCache.Add(receiver.String(), curEpoch)
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}
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// Process withdraw event by locking assets in the balance account.
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func (np *Processor) processWithdraw(withdraw *neofsEvent.Withdraw) {
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if !np.alphabetState.IsAlphabet() {
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np.log.Info("non alphabet mode, ignore withdraw")
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return
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}
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// create lock account
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lock, err := util.Uint160DecodeBytesBE(withdraw.ID()[:util.Uint160Size])
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if err != nil {
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np.log.Error("can't create lock account", zap.Error(err))
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return
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}
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curEpoch := np.epochState.EpochCounter()
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prm := balance.LockPrm{}
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prm.SetID(withdraw.ID())
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prm.SetUser(withdraw.User())
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prm.SetLock(lock)
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prm.SetAmount(np.converter.ToBalancePrecision(withdraw.Amount()))
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prm.SetDueEpoch(int64(curEpoch + lockAccountLifetime))
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err = np.balanceClient.Lock(prm)
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if err != nil {
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np.log.Error("can't lock assets for withdraw", zap.Error(err))
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}
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}
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// Process cheque event by transferring assets from the lock account back to
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// the reserve account.
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func (np *Processor) processCheque(cheque *neofsEvent.Cheque) {
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if !np.alphabetState.IsAlphabet() {
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np.log.Info("non alphabet mode, ignore cheque")
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return
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}
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prm := balance.BurnPrm{}
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prm.SetTo(cheque.LockAccount())
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prm.SetAmount(np.converter.ToBalancePrecision(cheque.Amount()))
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prm.SetID(cheque.ID())
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err := np.balanceClient.Burn(prm)
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if err != nil {
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np.log.Error("can't transfer assets to fed contract", zap.Error(err))
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}
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}
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