implements #49

synchronizer/common/syncinterfaces/storage.go

@@ -18,6 +18,7 @@ type StorageBlockReaderInterface interface {
 	AddBlock(ctx context.Context, block *entities.L1Block, dbTx stateTxType) error
 	GetPreviousBlock(ctx context.Context, offset uint64, fromBlockNumber *uint64, dbTx stateTxType) (*entities.L1Block, error)
 	GetFirstUncheckedBlock(ctx context.Context, fromBlockNumber uint64, dbTx stateTxType) (*entities.L1Block, error)
+	GetBlockByNumber(ctx context.Context, blockNumber uint64, dbTx stateTxType) (*entities.L1Block, error)
 }
 
 type StorageForkIDInterface interface {

synchronizer/synchronizer.go

@@ -51,6 +51,20 @@ type SynchronizerL1InfoTreeQuerier interface {
 	GetLeafsByL1InfoRoot(ctx context.Context, l1InfoRoot common.Hash) ([]L1InfoTreeLeaf, error)
 }
 
+type L1Block struct {
+	BlockNumber uint64
+	BlockHash   common.Hash
+	ParentHash  common.Hash
+	ReceivedAt  time.Time
+	Checked     bool // The block is safe (have past the safe point, e.g. Finalized in L1)
+	HasEvents   bool // This block have events from the rollup
+	SyncVersion string
+}
+
+type SynchronizerBlockQuerier interface {
+	GetL1BlockByNumber(ctx context.Context, blockNumber uint64) (*L1Block, error)
+}
+
 type SequencedBatches struct {
 	FromBatchNumber uint64
 	ToBatchNumber   uint64

synchronizer/synchronizer_queries.go

@@ -21,6 +21,7 @@ type storageSyncQueries interface {
 	syncinterfaces.StorageBlockReaderInterface
 	syncinterfaces.StorageSequenceBatchesInterface
 	syncinterfaces.StorageVirtualBatchInterface
+	syncinterfaces.StorageBlockReaderInterface
 }
 
 type SyncrhronizerQueries struct {
@@ -97,3 +98,12 @@ func (s *SyncrhronizerQueries) GetLastestVirtualBatchNumber(ctx context.Context)
 	}
 	return lastBatchNumber, nil
 }
+
+func (s *SyncrhronizerQueries) GetL1BlockByBlock(ctx context.Context, blockNumber uint64) (*L1Block, error) {
+	block, err := s.storage.GetBlockByNumber(ctx, blockNumber, nil)
+	if block == nil {
+		return nil, err
+	}
+	res := L1Block(*block)
+	return &res, err
+}

synchronizer/types.go

@@ -4,5 +4,4 @@ import (
 	"github.com/0xPolygonHermez/zkevm-synchronizer-l1/state/entities"
 )
 
-type L1Block = entities.L1Block
 type stateTxType = entities.Tx