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metaBlock.go
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metaBlock.go
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package process
import (
"math/big"
"github.com/ElrondNetwork/elrond-go/core/check"
"github.com/ElrondNetwork/elrond-go/data"
"github.com/ElrondNetwork/elrond-go/data/block"
"github.com/ElrondNetwork/elrond-go/data/state"
"github.com/ElrondNetwork/elrond-go/dataRetriever"
"github.com/ElrondNetwork/elrond-go/hashing"
"github.com/ElrondNetwork/elrond-go/marshal"
"github.com/ElrondNetwork/elrond-go/process"
"github.com/ElrondNetwork/elrond-go/sharding"
"github.com/ElrondNetwork/elrond-go/update"
)
// ArgsNewMetaBlockCreatorAfterHardFork defines the arguments structure for new metablock creator after hardfork
type ArgsNewMetaBlockCreatorAfterHardFork struct {
Hasher hashing.Hasher
ImportHandler update.ImportHandler
Marshalizer marshal.Marshalizer
PendingTxProcessor update.PendingTransactionProcessor
ShardCoordinator sharding.Coordinator
Storage dataRetriever.StorageService
TxCoordinator process.TransactionCoordinator
ValidatorAccounts state.AccountsAdapter
SelfShardID uint32
}
type metaBlockCreator struct {
*baseProcessor
validatorAccounts state.AccountsAdapter
}
// NewMetaBlockCreatorAfterHardfork creates the after hardfork metablock creator
func NewMetaBlockCreatorAfterHardfork(args ArgsNewMetaBlockCreatorAfterHardFork) (*metaBlockCreator, error) {
err := checkBlockCreatorAfterHardForkNilParameters(
args.Hasher,
args.ImportHandler,
args.Marshalizer,
args.PendingTxProcessor,
args.ShardCoordinator,
args.Storage,
args.TxCoordinator,
)
if err != nil {
return nil, err
}
if check.IfNil(args.ValidatorAccounts) {
return nil, update.ErrNilAccounts
}
base := &baseProcessor{
hasher: args.Hasher,
importHandler: args.ImportHandler,
marshalizer: args.Marshalizer,
pendingTxProcessor: args.PendingTxProcessor,
shardCoordinator: args.ShardCoordinator,
storage: args.Storage,
txCoordinator: args.TxCoordinator,
selfShardID: args.SelfShardID,
}
return &metaBlockCreator{
baseProcessor: base,
validatorAccounts: args.ValidatorAccounts,
}, nil
}
// CreateBlock will create a block after hardfork import
func (m *metaBlockCreator) CreateBlock(
body *block.Body,
chainID string,
round uint64,
nonce uint64,
epoch uint32,
) (data.HeaderHandler, error) {
if len(chainID) == 0 {
return nil, update.ErrEmptyChainID
}
validatorRootHash, err := m.validatorAccounts.Commit()
if err != nil {
return nil, err
}
rootHash, err := m.pendingTxProcessor.RootHash()
if err != nil {
return nil, err
}
hardForkMeta := m.importHandler.GetHardForkMetaBlock()
metaHeader := &block.MetaBlock{
Nonce: nonce,
Round: round,
PrevRandSeed: rootHash,
RandSeed: rootHash,
RootHash: rootHash,
ValidatorStatsRootHash: validatorRootHash,
EpochStart: hardForkMeta.EpochStart,
ChainID: []byte(chainID),
SoftwareVersion: []byte(""),
AccumulatedFees: big.NewInt(0),
AccumulatedFeesInEpoch: big.NewInt(0),
DeveloperFees: big.NewInt(0),
DevFeesInEpoch: big.NewInt(0),
Epoch: epoch,
PubKeysBitmap: []byte{1},
}
metaHeader.ReceiptsHash, err = m.txCoordinator.CreateReceiptsHash()
if err != nil {
return nil, err
}
totalTxCount, miniBlockHeaders, err := m.createMiniBlockHeaders(body)
if err != nil {
return nil, err
}
metaHeader.MiniBlockHeaders = miniBlockHeaders
metaHeader.TxCount = uint32(totalTxCount)
m.saveAllBlockDataToStorageForSelfShard(metaHeader, body)
return metaHeader, nil
}
// IsInterfaceNil returns true if underlying object is nil
func (m *metaBlockCreator) IsInterfaceNil() bool {
return m == nil
}