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package batchbuilder
import (
"github.com/hermeznetwork/hermez-node/common"
"github.com/hermeznetwork/hermez-node/db/kvdb"
"github.com/hermeznetwork/hermez-node/db/statedb"
"github.com/hermeznetwork/hermez-node/txprocessor"
"github.com/hermeznetwork/tracerr"
)
// 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
}
// ConfigBatch contains the batch configuration
type ConfigBatch struct {
TxProcessorConfig txprocessor.Config
}
// NewBatchBuilder constructs a new BatchBuilder, and executes the bb.Reset
// method
func NewBatchBuilder(dbpath string, synchronizerStateDB *statedb.StateDB, batchNum common.BatchNum, nLevels uint64) (*BatchBuilder, error) {
localStateDB, err := statedb.NewLocalStateDB(
statedb.Config{
Path: dbpath,
Keep: kvdb.DefaultKeep,
Type: statedb.TypeBatchBuilder,
NLevels: int(nLevels),
},
synchronizerStateDB)
if err != nil {
return nil, tracerr.Wrap(err)
}
bb := BatchBuilder{
localStateDB: localStateDB,
}
err = bb.Reset(batchNum, true)
return &bb, tracerr.Wrap(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 tracerr.Wrap(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) (*common.ZKInputs, error) {
bbStateDB := bb.localStateDB.StateDB
tp := txprocessor.NewTxProcessor(bbStateDB, configBatch.TxProcessorConfig)
ptOut, err := tp.ProcessTxs(coordIdxs, l1usertxs, l1coordinatortxs, pooll2txs)
return ptOut.ZKInputs, tracerr.Wrap(err)
}
// LocalStateDB returns the underlying LocalStateDB
func (bb *BatchBuilder) LocalStateDB() *statedb.LocalStateDB {
return bb.localStateDB
}