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interceptedShardHeaderDataFactory.go
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/
interceptedShardHeaderDataFactory.go
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package factory
import (
"github.com/ElrondNetwork/elrond-go-core/core/check"
"github.com/ElrondNetwork/elrond-go-core/hashing"
"github.com/ElrondNetwork/elrond-go-core/marshal"
"github.com/ElrondNetwork/elrond-go/process"
"github.com/ElrondNetwork/elrond-go/process/block/interceptedBlocks"
"github.com/ElrondNetwork/elrond-go/sharding"
)
var _ process.InterceptedDataFactory = (*interceptedShardHeaderDataFactory)(nil)
type interceptedShardHeaderDataFactory struct {
marshalizer marshal.Marshalizer
hasher hashing.Hasher
shardCoordinator sharding.Coordinator
headerSigVerifier process.InterceptedHeaderSigVerifier
headerIntegrityVerifier process.HeaderIntegrityVerifier
validityAttester process.ValidityAttester
epochStartTrigger process.EpochStartTriggerHandler
}
// NewInterceptedShardHeaderDataFactory creates an instance of interceptedShardHeaderDataFactory
func NewInterceptedShardHeaderDataFactory(argument *ArgInterceptedDataFactory) (*interceptedShardHeaderDataFactory, error) {
if argument == nil {
return nil, process.ErrNilArgumentStruct
}
if check.IfNil(argument.CoreComponents) {
return nil, process.ErrNilCoreComponentsHolder
}
if check.IfNil(argument.CoreComponents.InternalMarshalizer()) {
return nil, process.ErrNilMarshalizer
}
if check.IfNil(argument.CoreComponents.TxMarshalizer()) {
return nil, process.ErrNilMarshalizer
}
if check.IfNil(argument.CoreComponents.Hasher()) {
return nil, process.ErrNilHasher
}
if check.IfNil(argument.ShardCoordinator) {
return nil, process.ErrNilShardCoordinator
}
if check.IfNil(argument.HeaderSigVerifier) {
return nil, process.ErrNilHeaderSigVerifier
}
if check.IfNil(argument.HeaderIntegrityVerifier) {
return nil, process.ErrNilHeaderIntegrityVerifier
}
if check.IfNil(argument.EpochStartTrigger) {
return nil, process.ErrNilEpochStartTrigger
}
if len(argument.CoreComponents.ChainID()) == 0 {
return nil, process.ErrInvalidChainID
}
if check.IfNil(argument.ValidityAttester) {
return nil, process.ErrNilValidityAttester
}
return &interceptedShardHeaderDataFactory{
marshalizer: argument.CoreComponents.InternalMarshalizer(),
hasher: argument.CoreComponents.Hasher(),
shardCoordinator: argument.ShardCoordinator,
headerSigVerifier: argument.HeaderSigVerifier,
headerIntegrityVerifier: argument.HeaderIntegrityVerifier,
validityAttester: argument.ValidityAttester,
epochStartTrigger: argument.EpochStartTrigger,
}, nil
}
// Create creates instances of InterceptedData by unmarshalling provided buffer
func (ishdf *interceptedShardHeaderDataFactory) Create(buff []byte) (process.InterceptedData, error) {
arg := &interceptedBlocks.ArgInterceptedBlockHeader{
HdrBuff: buff,
Marshalizer: ishdf.marshalizer,
Hasher: ishdf.hasher,
ShardCoordinator: ishdf.shardCoordinator,
HeaderSigVerifier: ishdf.headerSigVerifier,
HeaderIntegrityVerifier: ishdf.headerIntegrityVerifier,
ValidityAttester: ishdf.validityAttester,
EpochStartTrigger: ishdf.epochStartTrigger,
}
return interceptedBlocks.NewInterceptedHeader(arg)
}
// IsInterfaceNil returns true if there is no value under the interface
func (ishdf *interceptedShardHeaderDataFactory) IsInterfaceNil() bool {
return ishdf == nil
}