new epoch start blockchain hooks

cmd/node/config/gasSchedules/gasScheduleV1.toml

@@ -113,6 +113,11 @@
     GetCodeMetadata      = 10000
     IsBuiltinFunction    = 10000
     IsReservedFunctionName = 10000
+    GetRoundTime    = 1000
+    EpochStartBlockTimeStamp = 1000
+    EpochStartBlockNonce = 1000
+    EpochStartBlockRound = 1000
+
 
 [EthAPICost]
     UseGas              = 100
@@ -237,6 +242,10 @@
     MBufferSetRandom             = 6000
     MBufferToBigFloat            = 2000
     MBufferFromBigFloat          = 2000
+    MBufferToSmallIntUnsigned    = 10000
+    MBufferToSmallIntSigned      = 10000
+    MBufferFromSmallIntUnsigned  = 10000
+    MBufferFromSmallIntSigned    = 10000
 
 [BigFloatAPICost]
     BigFloatNewFromParts = 3000

cmd/node/config/gasSchedules/gasScheduleV2.toml

@@ -113,6 +113,10 @@
     GetCodeMetadata      = 10000
     IsBuiltinFunction    = 10000
     IsReservedFunctionName = 10000
+    GetRoundTime    = 10000
+    EpochStartBlockTimeStamp = 10000
+    EpochStartBlockNonce = 10000
+    EpochStartBlockRound = 10000
 
 [EthAPICost]
     UseGas              = 100
@@ -237,6 +241,10 @@
     MBufferSetRandom             = 6000
     MBufferToBigFloat            = 2000
     MBufferFromBigFloat          = 2000
+    MBufferToSmallIntUnsigned    = 10000
+    MBufferToSmallIntSigned      = 10000
+    MBufferFromSmallIntUnsigned  = 10000
+    MBufferFromSmallIntSigned    = 10000
 
 [BigFloatAPICost]
     BigFloatNewFromParts = 3000

cmd/node/config/gasSchedules/gasScheduleV3.toml

@@ -113,6 +113,10 @@
     GetCodeMetadata      = 10000
     IsBuiltinFunction    = 10000
     IsReservedFunctionName = 10000
+    GetRoundTime    = 10000
+    EpochStartBlockTimeStamp = 10000
+    EpochStartBlockNonce = 10000
+    EpochStartBlockRound = 10000
 
 [EthAPICost]
     UseGas              = 100
@@ -237,6 +241,10 @@
     MBufferSetRandom             = 6000
     MBufferToBigFloat            = 2000
     MBufferFromBigFloat          = 2000
+    MBufferToSmallIntUnsigned    = 10000
+    MBufferToSmallIntSigned      = 10000
+    MBufferFromSmallIntUnsigned  = 10000
+    MBufferFromSmallIntSigned    = 10000
 
 [BigFloatAPICost]
     BigFloatNewFromParts = 3000

cmd/node/config/gasSchedules/gasScheduleV4.toml

@@ -113,6 +113,10 @@
     GetCodeMetadata      = 10000
     IsBuiltinFunction    = 10000
     IsReservedFunctionName = 10000
+    GetRoundTime    = 10000
+    EpochStartBlockTimeStamp = 10000
+    EpochStartBlockNonce = 10000
+    EpochStartBlockRound = 10000
 
 [EthAPICost]
     UseGas              = 100
@@ -237,6 +241,10 @@
     MBufferSetRandom             = 6000
     MBufferToBigFloat            = 2000
     MBufferFromBigFloat          = 2000
+    MBufferToSmallIntUnsigned    = 10000
+    MBufferToSmallIntSigned      = 10000
+    MBufferFromSmallIntUnsigned  = 10000
+    MBufferFromSmallIntSigned    = 10000
 
 [BigFloatAPICost]
     BigFloatNewFromParts = 3000

cmd/node/config/gasSchedules/gasScheduleV5.toml

@@ -113,6 +113,10 @@
     GetCodeMetadata      = 10000
     IsBuiltinFunction    = 10000
     IsReservedFunctionName = 10000
+    GetRoundTime    = 10000
+    EpochStartBlockTimeStamp = 10000
+    EpochStartBlockNonce = 10000
+    EpochStartBlockRound = 10000
 
 [EthAPICost]
     UseGas              = 100
@@ -237,6 +241,10 @@
     MBufferSetRandom             = 6000
     MBufferToBigFloat            = 2000
     MBufferFromBigFloat          = 2000
+    MBufferToSmallIntUnsigned    = 10000
+    MBufferToSmallIntSigned      = 10000
+    MBufferFromSmallIntUnsigned  = 10000
+    MBufferFromSmallIntSigned    = 10000
 
 [BigFloatAPICost]
     BigFloatNewFromParts = 3000

cmd/node/config/gasSchedules/gasScheduleV6.toml

@@ -113,6 +113,10 @@
     GetCodeMetadata      = 10000
     IsBuiltinFunction    = 10000
     IsReservedFunctionName = 10000
+    GetRoundTime    = 10000
+    EpochStartBlockTimeStamp = 10000
+    EpochStartBlockNonce = 10000
+    EpochStartBlockRound = 10000
 
 [EthAPICost]
     UseGas              = 100
@@ -237,6 +241,10 @@
     MBufferSetRandom             = 6000
     MBufferToBigFloat            = 2000
     MBufferFromBigFloat          = 2000
+    MBufferToSmallIntUnsigned = 10000
+    MBufferToSmallIntSigned = 10000
+    MBufferFromSmallIntUnsigned = 10000
+    MBufferFromSmallIntSigned = 10000
 
 [BigFloatAPICost]
     BigFloatNewFromParts = 3000

cmd/node/config/gasSchedules/gasScheduleV7.toml

@@ -114,6 +114,10 @@
     GetCodeMetadata      = 10000
     IsBuiltinFunction    = 10000
     IsReservedFunctionName = 10000
+    GetRoundTime    = 10000
+    EpochStartBlockTimeStamp = 10000
+    EpochStartBlockNonce = 10000
+    EpochStartBlockRound = 10000
 
 [EthAPICost]
     UseGas              = 100
@@ -238,6 +242,10 @@
     MBufferSetRandom             = 6000
     MBufferToBigFloat            = 2000
     MBufferFromBigFloat          = 2000
+    MBufferToSmallIntUnsigned    = 10000
+    MBufferToSmallIntSigned      = 10000
+    MBufferFromSmallIntUnsigned  = 10000
+    MBufferFromSmallIntSigned    = 10000
 
 [BigFloatAPICost]
     BigFloatNewFromParts = 3000

cmd/node/config/gasSchedules/gasScheduleV8.toml

@@ -114,6 +114,10 @@
     GetCodeMetadata      = 10000
     IsBuiltinFunction    = 10000
     IsReservedFunctionName = 10000
+    GetRoundTime    = 10000
+    EpochStartBlockTimeStamp = 10000
+    EpochStartBlockNonce = 10000
+    EpochStartBlockRound = 10000
 
 [EthAPICost]
     UseGas              = 100
@@ -238,6 +242,10 @@
     MBufferSetRandom             = 6000
     MBufferToBigFloat            = 2000
     MBufferFromBigFloat          = 2000
+    MBufferToSmallIntUnsigned    = 10000
+    MBufferToSmallIntSigned      = 10000
+    MBufferFromSmallIntUnsigned  = 10000
+    MBufferFromSmallIntSigned    = 10000
 
 [BigFloatAPICost]
     BigFloatNewFromParts = 3000

epochStart/bootstrap/baseStorageHandler.go

@@ -179,8 +179,15 @@ func (bsh *baseStorageHandler) saveShardHdrToStorage(hdr data.HeaderHandler) ([]
 		return nil, err
 	}
 
+	if hdr.IsStartOfEpochBlock() {
+		err = shardHdrStorage.Put([]byte(core.EpochStartIdentifier(hdr.GetEpoch())), headerBytes)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	nonceToByteSlice := bsh.uint64Converter.ToByteSlice(hdr.GetNonce())
-	shardHdrNonceStorage, err := bsh.storageService.GetStorer(dataRetriever.ShardHdrNonceHashDataUnit + dataRetriever.UnitType(hdr.GetShardID()))
+	shardHdrNonceStorage, err := bsh.storageService.GetStorer(dataRetriever.GetHdrNonceHashDataUnit(hdr.GetShardID()))
 	if err != nil {
 		return nil, err
 	}

epochStart/bootstrap/disabled/disabledEpochStartTrigger.go

@@ -2,6 +2,7 @@ package disabled
 
 import (
 	"github.com/multiversx/mx-chain-core-go/data"
+	"github.com/multiversx/mx-chain-core-go/data/block"
 )
 
 type epochStartTrigger struct {
@@ -54,6 +55,16 @@ func (e *epochStartTrigger) EpochStartMetaHdrHash() []byte {
 	return nil
 }
 
+// LastCommitedEpochStartHdr -
+func (e *epochStartTrigger) LastCommitedEpochStartHdr() (data.HeaderHandler, error) {
+	return &block.HeaderV2{}, nil
+}
+
+// GetEpochStartHdrFromStorage -
+func (e *epochStartTrigger) GetEpochStartHdrFromStorage(_ uint32) (data.HeaderHandler, error) {
+	return &block.HeaderV2{}, nil
+}
+
 // GetSavedStateKey -
 func (e *epochStartTrigger) GetSavedStateKey() []byte {
 	return nil

epochStart/bootstrap/process.go

@@ -128,6 +128,7 @@ type epochStartBootstrap struct {
 	dataPool                        dataRetriever.PoolsHolder
 	miniBlocksSyncer                epochStart.PendingMiniBlocksSyncHandler
 	headersSyncer                   epochStart.HeadersByHashSyncer
+	epochStartShardHeaderSyncer     epochStart.PendingEpochStartShardHeaderSyncer
 	txSyncerForScheduled            update.TransactionsSyncHandler
 	epochStartMetaBlockSyncer       epochStart.StartOfEpochMetaSyncer
 	nodesConfigHandler              StartOfEpochNodesConfigHandler
@@ -618,6 +619,16 @@ func (e *epochStartBootstrap) createSyncers() error {
 		return err
 	}
 
+	epochStartShardHeaderSyncerArgs := updateSync.ArgsPendingEpochStartShardHeaderSyncer{
+		HeadersPool:    e.dataPool.Headers(),
+		Marshalizer:    e.coreComponentsHolder.InternalMarshalizer(),
+		RequestHandler: e.requestHandler,
+	}
+	e.epochStartShardHeaderSyncer, err = updateSync.NewPendingEpochStartShardHeaderSyncer(epochStartShardHeaderSyncerArgs)
+	if err != nil {
+		return err
+	}
+
 	syncTxsArgs := updateSync.ArgsNewTransactionsSyncer{
 		DataPools:      e.dataPool,
 		Storages:       disabled.NewChainStorer(),
@@ -897,6 +908,46 @@ func (e *epochStartBootstrap) findSelfShardEpochStartData() (data.EpochStartShar
 	return epochStartData, epochStart.ErrEpochStartDataForShardNotFound
 }
 
+func (e *epochStartBootstrap) findPrevEpochLatestFinalizedBlockForShard() (data.EpochStartShardDataHandler, error) {
+	if check.IfNil(e.prevEpochStartMeta) {
+		return nil, epochStart.ErrEpochStartDataForShardNotFound
+	}
+
+	epochStartHandler := e.prevEpochStartMeta.GetEpochStartHandler()
+	if epochStartHandler == nil {
+		return nil, epochStart.ErrEpochStartDataForShardNotFound
+	}
+
+	lastFinalizedHeaders := epochStartHandler.GetLastFinalizedHeaderHandlers()
+	for _, hdr := range lastFinalizedHeaders {
+		if hdr.GetShardID() == e.shardCoordinator.SelfId() {
+			return hdr, nil
+		}
+	}
+
+	return nil, epochStart.ErrEpochStartDataForShardNotFound
+}
+
+func (e *epochStartBootstrap) syncLatestEpochStartShardBlock(targetEpoch uint32, ctx context.Context) (data.HeaderHandler, []byte, error) {
+	prevEpochLatestFinalizedBlock, err := e.findPrevEpochLatestFinalizedBlockForShard()
+	if err != nil || prevEpochLatestFinalizedBlock == nil {
+		return nil, nil, epochStart.ErrEpochStartDataForShardNotFound
+	}
+
+	e.epochStartShardHeaderSyncer.ClearFields()
+	err = e.epochStartShardHeaderSyncer.SyncEpochStartShardHeader(e.shardCoordinator.SelfId(), targetEpoch, prevEpochLatestFinalizedBlock.GetNonce(), ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	epochStartShardBlock, epochStartShardBlockHash, err := e.epochStartShardHeaderSyncer.GetEpochStartHeader()
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return epochStartShardBlock, epochStartShardBlockHash, nil
+}
+
 func (e *epochStartBootstrap) requestAndProcessForShard(peerMiniBlocks []*block.MiniBlock) error {
 	epochStartData, err := e.findSelfShardEpochStartData()
 	if err != nil {
@@ -950,6 +1001,15 @@ func (e *epochStartBootstrap) requestAndProcessForShard(peerMiniBlocks []*block.
 		return epochStart.ErrWrongTypeAssertion
 	}
 
+	ctx, cancel = context.WithTimeout(context.Background(), DefaultTimeToWaitForRequestedData)
+	epochStartShardBlock, epochStartShardBlockHash, err := e.syncLatestEpochStartShardBlock(epochStartData.GetEpoch(), ctx)
+	cancel()
+	if err != nil {
+		return err
+	}
+
+	e.syncedHeaders[string(epochStartShardBlockHash)] = epochStartShardBlock
+
 	dts, err := e.getDataToSync(
 		epochStartData,
 		shardNotarizedHeader,