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nodeBlocks.go
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nodeBlocks.go
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package node
import (
"github.com/multiversx/mx-chain-core-go/core"
"github.com/multiversx/mx-chain-core-go/data"
"github.com/multiversx/mx-chain-go/dataRetriever"
"github.com/multiversx/mx-chain-go/process"
)
func (n *Node) getBlockHeaderByNonce(nonce uint64) (data.HeaderHandler, []byte, error) {
headerHash, err := n.getBlockHashByNonce(nonce)
if err != nil {
return nil, nil, err
}
header, err := n.getBlockHeaderByHash(headerHash)
if err != nil {
return nil, nil, err
}
return header, headerHash, nil
}
func (n *Node) getBlockHashByNonce(nonce uint64) ([]byte, error) {
shardId := n.processComponents.ShardCoordinator().SelfId()
hashByNonceUnit := dataRetriever.GetHdrNonceHashDataUnit(shardId)
return process.GetHeaderHashFromStorageWithNonce(
nonce,
n.dataComponents.StorageService(),
n.coreComponents.Uint64ByteSliceConverter(),
n.coreComponents.InternalMarshalizer(),
hashByNonceUnit,
)
}
func (n *Node) getBlockHeaderByHash(headerHash []byte) (data.HeaderHandler, error) {
epoch, err := n.getOptionalEpochByHash(headerHash)
if err != nil {
return nil, err
}
header, err := n.getBlockHeaderInEpochByHash(headerHash, epoch)
if err != nil {
return nil, err
}
return header, nil
}
func (n *Node) getOptionalEpochByHash(hash []byte) (core.OptionalUint32, error) {
historyRepository := n.processComponents.HistoryRepository()
if !historyRepository.IsEnabled() {
return core.OptionalUint32{}, nil
}
epoch, err := historyRepository.GetEpochByHash(hash)
if err != nil {
return core.OptionalUint32{}, err
}
return core.OptionalUint32{Value: epoch, HasValue: true}, nil
}
func (n *Node) getBlockHeaderInEpochByHash(headerHash []byte, epoch core.OptionalUint32) (data.HeaderHandler, error) {
shardId := n.processComponents.ShardCoordinator().SelfId()
unitType := dataRetriever.GetHeadersDataUnit(shardId)
storer, err := n.dataComponents.StorageService().GetStorer(unitType)
if err != nil {
return nil, err
}
var headerBuffer []byte
if epoch.HasValue {
headerBuffer, err = storer.GetFromEpoch(headerHash, epoch.Value)
} else {
headerBuffer, err = storer.Get(headerHash)
}
if err != nil {
return nil, err
}
header, err := process.UnmarshalHeader(shardId, n.coreComponents.InternalMarshalizer(), headerBuffer)
if err != nil {
return nil, err
}
return header, nil
}
func (n *Node) getBlockRootHash(headerHash []byte, header data.HeaderHandler) []byte {
blockRootHash, err := n.processComponents.ScheduledTxsExecutionHandler().GetScheduledRootHashForHeaderWithEpoch(
headerHash,
header.GetEpoch())
if err != nil {
blockRootHash = header.GetRootHash()
}
return blockRootHash
}