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executor_trusted_batch_sync.go
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executor_trusted_batch_sync.go
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package l2_sync_etrog
import (
"context"
"errors"
"fmt"
"time"
"github.com/0xPolygonHermez/zkevm-node/jsonrpc/types"
"github.com/0xPolygonHermez/zkevm-node/log"
"github.com/0xPolygonHermez/zkevm-node/state"
syncCommon "github.com/0xPolygonHermez/zkevm-node/synchronizer/common"
"github.com/0xPolygonHermez/zkevm-node/synchronizer/common/syncinterfaces"
"github.com/0xPolygonHermez/zkevm-node/synchronizer/l2_sync/l2_shared"
"github.com/ethereum/go-ethereum/common"
"github.com/jackc/pgx/v4"
)
var (
// ErrNotImplemented is returned when a method is not implemented
ErrNotImplemented = errors.New("not implemented")
// ErrFailExecuteBatch is returned when the batch is not executed correctly
ErrFailExecuteBatch = errors.New("fail execute batch")
// ErrCriticalClosedBatchDontContainExpectedData is returnted when try to close a batch that is already close but data doesnt match
ErrCriticalClosedBatchDontContainExpectedData = errors.New("when closing the batch, the batch is already close, but the data on state doesnt match the expected")
// ErrCantReprocessBatchMissingPreviousStateBatch can't reprocess a divergent batch because is missing previous state batch
ErrCantReprocessBatchMissingPreviousStateBatch = errors.New("cant reprocess batch because is missing previous state batch")
)
// StateInterface contains the methods required to interact with the state.
type StateInterface interface {
BeginStateTransaction(ctx context.Context) (pgx.Tx, error)
CloseBatch(ctx context.Context, receipt state.ProcessingReceipt, dbTx pgx.Tx) error
GetBatchByNumber(ctx context.Context, batchNumber uint64, dbTx pgx.Tx) (*state.Batch, error)
GetForkIDByBatchNumber(batchNumber uint64) uint64
UpdateWIPBatch(ctx context.Context, receipt state.ProcessingReceipt, dbTx pgx.Tx) error
ResetTrustedState(ctx context.Context, batchNumber uint64, dbTx pgx.Tx) error
OpenBatch(ctx context.Context, processingContext state.ProcessingContext, dbTx pgx.Tx) error
ProcessBatchV2(ctx context.Context, request state.ProcessRequest, updateMerkleTree bool) (*state.ProcessBatchResponse, error)
StoreL2Block(ctx context.Context, batchNumber uint64, l2Block *state.ProcessBlockResponse, txsEGPLog []*state.EffectiveGasPriceLog, dbTx pgx.Tx) error
GetL1InfoTreeDataFromBatchL2Data(ctx context.Context, batchL2Data []byte, dbTx pgx.Tx) (map[uint32]state.L1DataV2, common.Hash, common.Hash, error)
}
// L1SyncChecker is the interface to check if we are synced from L1 to process a batch
type L1SyncChecker interface {
CheckL1SyncStatusEnoughToProcessBatch(ctx context.Context, batchNumber uint64, globalExitRoot common.Hash, dbTx pgx.Tx) error
}
// SyncTrustedBatchExecutorForEtrog is the implementation of the SyncTrustedStateBatchExecutorSteps that
// have the functions to sync a fullBatch, incrementalBatch and reprocessBatch
type SyncTrustedBatchExecutorForEtrog struct {
state StateInterface
sync syncinterfaces.SynchronizerFlushIDManager
l1SyncChecker L1SyncChecker
}
// NewSyncTrustedBatchExecutorForEtrog creates a new prcessor for sync with L2 batches
func NewSyncTrustedBatchExecutorForEtrog(zkEVMClient syncinterfaces.ZKEVMClientTrustedBatchesGetter,
state l2_shared.StateInterface, stateBatchExecutor StateInterface,
sync syncinterfaces.SynchronizerFlushIDManager, timeProvider syncCommon.TimeProvider, l1SyncChecker L1SyncChecker) *l2_shared.TrustedBatchesRetrieve {
executorSteps := &SyncTrustedBatchExecutorForEtrog{
state: stateBatchExecutor,
sync: sync,
l1SyncChecker: l1SyncChecker,
}
executor := l2_shared.NewProcessorTrustedBatchSync(executorSteps, timeProvider)
a := l2_shared.NewTrustedBatchesRetrieve(executor, zkEVMClient, state, sync, *l2_shared.NewTrustedStateManager(timeProvider, time.Hour))
return a
}
// NothingProcess process a batch that is already on database and no new L2batchData, so it is not going to be processed again.
// Maybe it needs to be close
func (b *SyncTrustedBatchExecutorForEtrog) NothingProcess(ctx context.Context, data *l2_shared.ProcessData, dbTx pgx.Tx) (*l2_shared.ProcessResponse, error) {
isEqual, strResult := l2_shared.AreEqualStateBatchAndTrustedBatch(data.StateBatch, data.TrustedBatch, l2_shared.CMP_BATCH_IGNORE_TSTAMP+l2_shared.CMP_BATCH_IGNORE_WIP)
if !isEqual {
log.Warnf("%s Nothing new to process but the TrustedBatch differ: %s. Forcing a reprocess", data.DebugPrefix, strResult)
if data.StateBatch.WIP {
if data.PreviousStateBatch != nil {
data.OldAccInputHash = data.PreviousStateBatch.AccInputHash
data.OldStateRoot = data.PreviousStateBatch.StateRoot
return b.ReProcess(ctx, data, dbTx)
} else {
log.Warnf("%s PreviousStateBatch is nil. Can't reprocess", data.DebugPrefix)
return nil, ErrCantReprocessBatchMissingPreviousStateBatch
}
} else {
log.Warnf("%s StateBatch is not WIP. Can't reprocess", data.DebugPrefix)
return nil, ErrCriticalClosedBatchDontContainExpectedData
}
}
res := l2_shared.NewProcessResponse()
if data.BatchMustBeClosed {
log.Debugf("%s Closing batch", data.DebugPrefix)
err := b.CloseBatch(ctx, data.TrustedBatch, dbTx, data.DebugPrefix)
if err != nil {
log.Error("%s error closing batch. Error: ", data.DebugPrefix, err)
return nil, err
}
data.StateBatch.WIP = false
res.UpdateCurrentBatch(data.StateBatch)
}
return &res, nil
}
// CreateEmptyBatch create a new empty batch (no batchL2Data and WIP)
func (b *SyncTrustedBatchExecutorForEtrog) CreateEmptyBatch(ctx context.Context, data *l2_shared.ProcessData, dbTx pgx.Tx) (*l2_shared.ProcessResponse, error) {
log.Debugf("%s The Batch is a WIP empty, so just creating a DB entry", data.DebugPrefix)
err := b.openBatch(ctx, data.TrustedBatch, dbTx, data.DebugPrefix)
if err != nil {
log.Errorf("%s error openning batch. Error: %v", data.DebugPrefix, err)
return nil, err
}
log.Debugf("%s updateWIPBatch", data.DebugPrefix)
err = b.updateWIPBatch(ctx, data, data.TrustedBatch.StateRoot, dbTx)
if err != nil {
log.Errorf("%s error updateWIPBatch. Error: ", data.DebugPrefix, err)
return nil, err
}
res := l2_shared.NewProcessResponse()
stateBatch := syncCommon.RpcBatchToStateBatch(data.TrustedBatch)
res.UpdateCurrentBatch(stateBatch)
return &res, nil
}
// FullProcess process a batch that is not on database, so is the first time we process it
func (b *SyncTrustedBatchExecutorForEtrog) FullProcess(ctx context.Context, data *l2_shared.ProcessData, dbTx pgx.Tx) (*l2_shared.ProcessResponse, error) {
log.Debugf("%s FullProcess", data.DebugPrefix)
if len(data.TrustedBatch.BatchL2Data) == 0 && !data.BatchMustBeClosed {
return b.CreateEmptyBatch(ctx, data, dbTx)
}
err := b.checkIfWeAreSyncedFromL1ToProcessGlobalExitRoot(ctx, data, dbTx)
if err != nil {
log.Errorf("%s error checkIfWeAreSyncedFromL1ToProcessGlobalExitRoot. Error: %v", data.DebugPrefix, err)
return nil, err
}
err = b.openBatch(ctx, data.TrustedBatch, dbTx, data.DebugPrefix)
if err != nil {
log.Errorf("%s error openning batch. Error: %v", data.DebugPrefix, err)
return nil, err
}
leafs, l1InfoRoot, _, err := b.state.GetL1InfoTreeDataFromBatchL2Data(ctx, data.TrustedBatch.BatchL2Data, dbTx)
if err != nil {
log.Errorf("%s error getting GetL1InfoTreeDataFromBatchL2Data: %v. Error:%w", data.DebugPrefix, l1InfoRoot, err)
return nil, err
}
debugStr := data.DebugPrefix
processBatchResp, err := b.processAndStoreTxs(ctx, b.getProcessRequest(data, leafs, l1InfoRoot), dbTx, debugStr)
if err != nil {
log.Error("%s error procesingAndStoringTxs. Error: ", debugStr, err)
return nil, err
}
err = batchResultSanityCheck(data, processBatchResp, debugStr)
if err != nil {
log.Errorf("%s error batchResultSanityCheck. Error: %s", data.DebugPrefix, err.Error())
return nil, err
}
if data.BatchMustBeClosed {
log.Debugf("%s Closing batch", data.DebugPrefix)
err = b.CloseBatch(ctx, data.TrustedBatch, dbTx, data.DebugPrefix)
if err != nil {
log.Error("%s error closing batch. Error: ", data.DebugPrefix, err)
return nil, err
}
} else {
log.Debugf("%s updateWIPBatch", data.DebugPrefix)
err = b.updateWIPBatch(ctx, data, processBatchResp.NewStateRoot, dbTx)
if err != nil {
log.Errorf("%s error updateWIPBatch. Error: ", data.DebugPrefix, err)
return nil, err
}
}
resultBatch, err := b.state.GetBatchByNumber(ctx, uint64(data.TrustedBatch.Number), dbTx)
if err != nil {
log.Error("%s error getting batch. Error: ", data.DebugPrefix, err)
return nil, err
}
res := l2_shared.NewProcessResponse()
res.UpdateCurrentBatchWithExecutionResult(resultBatch, processBatchResp)
return &res, nil
}
// IncrementalProcess process a batch that we have processed before, and we have the intermediate state root, so is going to be process only new Tx
func (b *SyncTrustedBatchExecutorForEtrog) IncrementalProcess(ctx context.Context, data *l2_shared.ProcessData, dbTx pgx.Tx) (*l2_shared.ProcessResponse, error) {
var err error
if data == nil || data.TrustedBatch == nil || data.StateBatch == nil {
return nil, fmt.Errorf("data is nil")
}
if err := checkThatL2DataIsIncremental(data); err != nil {
log.Errorf("%s error checkThatL2DataIsIncremental. Error: %v", data.DebugPrefix, err)
return nil, err
}
err = b.checkIfWeAreSyncedFromL1ToProcessGlobalExitRoot(ctx, data, dbTx)
if err != nil {
log.Errorf("%s error checkIfWeAreSyncedFromL1ToProcessGlobalExitRoot. Error: %v", data.DebugPrefix, err)
return nil, err
}
PartialBatchL2Data, err := b.composePartialBatch(data.StateBatch, data.TrustedBatch)
if err != nil {
log.Errorf("%s error composePartialBatch batch Error:%w", data.DebugPrefix, err)
return nil, err
}
leafs, l1InfoRoot, _, err := b.state.GetL1InfoTreeDataFromBatchL2Data(ctx, PartialBatchL2Data, dbTx)
if err != nil {
log.Errorf("%s error getting GetL1InfoTreeDataFromBatchL2Data: %v. Error:%w", data.DebugPrefix, l1InfoRoot, err)
// TODO: Need to refine, depending of the response of GetL1InfoTreeDataFromBatchL2Data
// if some leaf is missing, we need to resync from L1 to get the missing events and then process again
return nil, syncinterfaces.ErrMissingSyncFromL1
}
debugStr := fmt.Sprintf("%s: Batch %d:", data.Mode, uint64(data.TrustedBatch.Number))
processReq := b.getProcessRequest(data, leafs, l1InfoRoot)
processReq.Transactions = PartialBatchL2Data
processBatchResp, err := b.processAndStoreTxs(ctx, processReq, dbTx, debugStr)
if err != nil {
log.Errorf("%s error procesingAndStoringTxs. Error: ", data.DebugPrefix, err)
return nil, err
}
err = batchResultSanityCheck(data, processBatchResp, debugStr)
if err != nil {
log.Errorf("%s error batchResultSanityCheck. Error: %s", data.DebugPrefix, err.Error())
return nil, err
}
if data.BatchMustBeClosed {
log.Debugf("%s Closing batch", data.DebugPrefix)
err = b.CloseBatch(ctx, data.TrustedBatch, dbTx, data.DebugPrefix)
if err != nil {
log.Errorf("%s error closing batch. Error: ", data.DebugPrefix, err)
return nil, err
}
} else {
log.Debugf("%s updateWIPBatch", data.DebugPrefix)
err = b.updateWIPBatch(ctx, data, processBatchResp.NewStateRoot, dbTx)
if err != nil {
log.Errorf("%s error updateWIPBatch. Error: ", data.DebugPrefix, err)
return nil, err
}
}
updatedBatch := *data.StateBatch
updatedBatch.BatchL2Data = data.TrustedBatch.BatchL2Data
updatedBatch.WIP = !data.BatchMustBeClosed
res := l2_shared.NewProcessResponse()
res.UpdateCurrentBatchWithExecutionResult(&updatedBatch, processBatchResp)
return &res, nil
}
func (b *SyncTrustedBatchExecutorForEtrog) checkIfWeAreSyncedFromL1ToProcessGlobalExitRoot(ctx context.Context, data *l2_shared.ProcessData, dbTx pgx.Tx) error {
if b.l1SyncChecker == nil {
log.Infof("Disabled check L1 sync status for process batch")
return nil
}
return b.l1SyncChecker.CheckL1SyncStatusEnoughToProcessBatch(ctx, data.BatchNumber, data.TrustedBatch.GlobalExitRoot, dbTx)
}
func (b *SyncTrustedBatchExecutorForEtrog) updateWIPBatch(ctx context.Context, data *l2_shared.ProcessData, NewStateRoot common.Hash, dbTx pgx.Tx) error {
receipt := state.ProcessingReceipt{
BatchNumber: data.BatchNumber,
StateRoot: NewStateRoot,
LocalExitRoot: data.TrustedBatch.LocalExitRoot,
BatchL2Data: data.TrustedBatch.BatchL2Data,
AccInputHash: data.TrustedBatch.AccInputHash,
GlobalExitRoot: data.TrustedBatch.GlobalExitRoot,
}
err := b.state.UpdateWIPBatch(ctx, receipt, dbTx)
if err != nil {
log.Errorf("%s error UpdateWIPBatch. Error: ", data.DebugPrefix, err)
return err
}
return err
}
// ReProcess process a batch that we have processed before, but we don't have the intermediate state root, so we need to reprocess it
func (b *SyncTrustedBatchExecutorForEtrog) ReProcess(ctx context.Context, data *l2_shared.ProcessData, dbTx pgx.Tx) (*l2_shared.ProcessResponse, error) {
log.Warnf("%s needs to be reprocessed! deleting batches from this batch, because it was partially processed but the intermediary stateRoot is lost", data.DebugPrefix)
err := b.state.ResetTrustedState(ctx, uint64(data.TrustedBatch.Number)-1, dbTx)
if err != nil {
log.Warnf("%s error deleting batches from this batch: %v", data.DebugPrefix, err)
return nil, err
}
// From this point is like a new trusted batch
return b.FullProcess(ctx, data, dbTx)
}
func batchResultSanityCheck(data *l2_shared.ProcessData, processBatchResp *state.ProcessBatchResponse, debugStr string) error {
if processBatchResp == nil {
return nil
}
if processBatchResp.NewStateRoot == state.ZeroHash {
return fmt.Errorf("%s processBatchResp.NewStateRoot is ZeroHash. Err: %w", debugStr, l2_shared.ErrFatalBatchDesynchronized)
}
if processBatchResp.NewStateRoot != data.TrustedBatch.StateRoot {
return fmt.Errorf("%s processBatchResp.NewStateRoot(%s) != data.TrustedBatch.StateRoot(%s). Err: %w", debugStr,
processBatchResp.NewStateRoot.String(), data.TrustedBatch.StateRoot.String(), l2_shared.ErrFatalBatchDesynchronized)
}
if processBatchResp.NewLocalExitRoot != data.TrustedBatch.LocalExitRoot {
return fmt.Errorf("%s processBatchResp.NewLocalExitRoot(%s) != data.StateBatch.LocalExitRoot(%s). Err: %w", debugStr,
processBatchResp.NewLocalExitRoot.String(), data.TrustedBatch.LocalExitRoot.String(), l2_shared.ErrFatalBatchDesynchronized)
}
// We can't check AccInputHash because we dont have timeLimit neither L1InfoRoot used to create the batch
// is going to be update from L1
// if processBatchResp.NewAccInputHash != data.TrustedBatch.AccInputHash {
// return fmt.Errorf("%s processBatchResp. if processBatchResp.NewAccInputHash(%s) != data.TrustedBatch.AccInputHash(%s). Err:%w", debugStr,
// processBatchResp.NewAccInputHash.String(), data.TrustedBatch.AccInputHash.String(), ErrNotExpectedBathResult)
// }
return nil
}
// CloseBatch close a batch
func (b *SyncTrustedBatchExecutorForEtrog) CloseBatch(ctx context.Context, trustedBatch *types.Batch, dbTx pgx.Tx, debugStr string) error {
receipt := state.ProcessingReceipt{
BatchNumber: uint64(trustedBatch.Number),
StateRoot: trustedBatch.StateRoot,
LocalExitRoot: trustedBatch.LocalExitRoot,
BatchL2Data: trustedBatch.BatchL2Data,
AccInputHash: trustedBatch.AccInputHash,
}
log.Debugf("%s closing batch %v", debugStr, trustedBatch.Number)
// This update SET state_root = $1, local_exit_root = $2, acc_input_hash = $3, raw_txs_data = $4, batch_resources = $5, closing_reason = $6, wip = FALSE
if err := b.state.CloseBatch(ctx, receipt, dbTx); err != nil {
// This is a workaround to avoid closing a batch that was already closed
if err.Error() != state.ErrBatchAlreadyClosed.Error() {
log.Errorf("%s error closing batch %d", debugStr, trustedBatch.Number)
return err
} else {
log.Warnf("%s CASE 02: the batch [%d] looks like were not close but in STATE was closed", debugStr, trustedBatch.Number)
// Check that the fields have the right values
dbBatch, err := b.state.GetBatchByNumber(ctx, uint64(trustedBatch.Number), dbTx)
if err != nil {
log.Errorf("%s error getting local batch %d", debugStr, trustedBatch.Number)
return err
}
equals, str := l2_shared.AreEqualStateBatchAndTrustedBatch(dbBatch, trustedBatch, l2_shared.CMP_BATCH_IGNORE_TSTAMP)
if !equals {
// This is a situation impossible to reach!, if it happens we halt sync and we need to develop a recovery process
err := fmt.Errorf("%s the batch data on state doesnt match the expected (%s) error:%w", debugStr, str, ErrCriticalClosedBatchDontContainExpectedData)
log.Warnf(err.Error())
return err
}
}
}
return nil
}
func (b *SyncTrustedBatchExecutorForEtrog) openBatch(ctx context.Context, trustedBatch *types.Batch, dbTx pgx.Tx, debugStr string) error {
log.Debugf("%s Opening batch %d", debugStr, trustedBatch.Number)
var batchL2Data []byte = trustedBatch.BatchL2Data
processCtx := state.ProcessingContext{
BatchNumber: uint64(trustedBatch.Number),
Coinbase: common.HexToAddress(trustedBatch.Coinbase.String()),
// Instead of using trustedBatch.Timestamp use now, because the prevBatch could have a newer timestamp because
// use the tstamp of the L1Block where is the virtualization event
Timestamp: time.Now(),
GlobalExitRoot: trustedBatch.GlobalExitRoot,
BatchL2Data: &batchL2Data,
}
if trustedBatch.ForcedBatchNumber != nil {
fb := uint64(*trustedBatch.ForcedBatchNumber)
processCtx.ForcedBatchNum = &fb
}
err := b.state.OpenBatch(ctx, processCtx, dbTx)
if err != nil {
log.Error("%s error opening batch: ", debugStr, trustedBatch.Number)
return err
}
return nil
}
func (b *SyncTrustedBatchExecutorForEtrog) processAndStoreTxs(ctx context.Context, request state.ProcessRequest, dbTx pgx.Tx, debugPrefix string) (*state.ProcessBatchResponse, error) {
if request.OldStateRoot == state.ZeroHash {
log.Warnf("%s Processing batch with oldStateRoot == zero....", debugPrefix)
}
processBatchResp, err := b.state.ProcessBatchV2(ctx, request, true)
if err != nil {
log.Errorf("%s error processing sequencer batch for batch: %v error:%v ", debugPrefix, request.BatchNumber, err)
return nil, err
}
b.sync.PendingFlushID(processBatchResp.FlushID, processBatchResp.ProverID)
log.Debugf("%s Storing %d blocks for batch %v", debugPrefix, len(processBatchResp.BlockResponses), request.BatchNumber)
if processBatchResp.IsExecutorLevelError {
log.Warnf("%s executorLevelError detected. Avoid store txs...", debugPrefix)
return nil, fmt.Errorf("%s executorLevelError detected err: %w", debugPrefix, ErrFailExecuteBatch)
} else if processBatchResp.IsRomOOCError {
log.Warnf("%s romOOCError detected. Avoid store txs...", debugPrefix)
return nil, fmt.Errorf("%s romOOCError detected.err: %w", debugPrefix, ErrFailExecuteBatch)
}
for _, block := range processBatchResp.BlockResponses {
log.Debugf("%s Storing trusted tx %d", debugPrefix, block.BlockNumber)
if err = b.state.StoreL2Block(ctx, request.BatchNumber, block, nil, dbTx); err != nil {
newErr := fmt.Errorf("%s failed to store l2block: %v err:%w", debugPrefix, block.BlockNumber, err)
log.Error(newErr.Error())
return nil, newErr
}
}
log.Infof("%s Batch %v: batchl2data len:%d processed and stored: %s oldStateRoot: %s -> newStateRoot:%s", debugPrefix, request.BatchNumber, len(request.Transactions), getResponseInfo(processBatchResp),
request.OldStateRoot.String(), processBatchResp.NewStateRoot.String())
return processBatchResp, nil
}
func getResponseInfo(response *state.ProcessBatchResponse) string {
if len(response.BlockResponses) == 0 {
return "no blocks, no txs"
}
minBlock := response.BlockResponses[0].BlockNumber
maxBlock := response.BlockResponses[len(response.BlockResponses)-1].BlockNumber
totalTx := 0
for _, block := range response.BlockResponses {
totalTx += len(block.TransactionResponses)
}
return fmt.Sprintf(" l2block[%v-%v] txs[%v]", minBlock, maxBlock, totalTx)
}
func (b *SyncTrustedBatchExecutorForEtrog) getProcessRequest(data *l2_shared.ProcessData, l1InfoTreeLeafs map[uint32]state.L1DataV2, l1InfoTreeRoot common.Hash) state.ProcessRequest {
request := state.ProcessRequest{
BatchNumber: uint64(data.TrustedBatch.Number),
OldStateRoot: data.OldStateRoot,
OldAccInputHash: data.OldAccInputHash,
Coinbase: common.HexToAddress(data.TrustedBatch.Coinbase.String()),
L1InfoRoot_V2: l1InfoTreeRoot,
L1InfoTreeData_V2: l1InfoTreeLeafs,
TimestampLimit_V2: uint64(data.TrustedBatch.Timestamp),
Transactions: data.TrustedBatch.BatchL2Data,
ForkID: b.state.GetForkIDByBatchNumber(uint64(data.TrustedBatch.Number)),
SkipVerifyL1InfoRoot_V2: true,
}
return request
}
func checkThatL2DataIsIncremental(data *l2_shared.ProcessData) error {
newDataFlag, err := l2_shared.ThereAreNewBatchL2Data(data.StateBatch.BatchL2Data, data.TrustedBatch.BatchL2Data)
if err != nil {
return err
}
if !newDataFlag {
return l2_shared.ErrBatchDataIsNotIncremental
}
return nil
}
func (b *SyncTrustedBatchExecutorForEtrog) composePartialBatch(previousBatch *state.Batch, newBatch *types.Batch) ([]byte, error) {
debugStr := " composePartialBatch: "
rawPreviousBatch, err := state.DecodeBatchV2(previousBatch.BatchL2Data)
if err != nil {
return nil, err
}
debugStr += fmt.Sprintf("previousBatch.blocks: %v (%v) ", len(rawPreviousBatch.Blocks), len(previousBatch.BatchL2Data))
if len(previousBatch.BatchL2Data) >= len(newBatch.BatchL2Data) {
return nil, fmt.Errorf("previousBatch.BatchL2Data (%d)>=newBatch.BatchL2Data (%d)", len(previousBatch.BatchL2Data), len(newBatch.BatchL2Data))
}
newData := newBatch.BatchL2Data[len(previousBatch.BatchL2Data):]
rawPartialBatch, err := state.DecodeBatchV2(newData)
if err != nil {
return nil, err
}
debugStr += fmt.Sprintf(" deltaBatch.blocks: %v (%v) ", len(rawPartialBatch.Blocks), len(newData))
newBatchEncoded, err := state.EncodeBatchV2(rawPartialBatch)
if err != nil {
return nil, err
}
log.Debug(debugStr)
return newBatchEncoded, nil
}