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package batchbuilder
import (
ethCommon "github.com/ethereum/go-ethereum/common"
"github.com/hermeznetwork/hermez-node/common"
"github.com/hermeznetwork/hermez-node/db/statedb"
)
// ConfigCircuit contains the circuit configuration
type ConfigCircuit struct {
TxsMax uint64
L1TxsMax uint64
SMTLevelsMax uint64
}
// BatchBuilder implements the batch builder type, which contains the
// functionalities
type BatchBuilder struct {
localStateDB *statedb.LocalStateDB
configCircuits []ConfigCircuit
}
// ConfigBatch contains the batch configuration
type ConfigBatch struct {
ForgerAddress ethCommon.Address
}
// NewBatchBuilder constructs a new BatchBuilder, and executes the bb.Reset
// method
func NewBatchBuilder(dbpath string, synchronizerStateDB *statedb.StateDB, configCircuits []ConfigCircuit, batchNum common.BatchNum, nLevels uint64) (*BatchBuilder, error) {
localStateDB, err := statedb.NewLocalStateDB(dbpath, synchronizerStateDB, statedb.TypeBatchBuilder, int(nLevels))
if err != nil {
return nil, err
}
bb := BatchBuilder{
localStateDB: localStateDB,
configCircuits: configCircuits,
}
err = bb.Reset(batchNum, true)
return &bb, err
}
// Reset tells the BatchBuilder to reset it's internal state to the required
// `batchNum`. If `fromSynchronizer` is true, the BatchBuilder must take a
// copy of the rollup state from the Synchronizer at that `batchNum`, otherwise
// it can just roll back the internal copy.
func (bb *BatchBuilder) Reset(batchNum common.BatchNum, fromSynchronizer bool) error {
return bb.localStateDB.Reset(batchNum, fromSynchronizer)
}
// BuildBatch takes the transactions and returns the common.ZKInputs of the next batch
func (bb *BatchBuilder) BuildBatch(coordIdxs []common.Idx, configBatch *ConfigBatch, l1usertxs, l1coordinatortxs []common.L1Tx, pooll2txs []common.PoolL2Tx, tokenIDs []common.TokenID) (*common.ZKInputs, error) {
zkInputs, _, err := bb.localStateDB.ProcessTxs(coordIdxs, l1usertxs, l1coordinatortxs, pooll2txs)
if err != nil {
return nil, err
}
err = bb.localStateDB.MakeCheckpoint()
return zkInputs, err
}