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bootstrapDataProvider.go
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/
bootstrapDataProvider.go
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package factory
import (
"github.com/ElrondNetwork/elrond-go/core/check"
"github.com/ElrondNetwork/elrond-go/marshal"
"github.com/ElrondNetwork/elrond-go/process"
"github.com/ElrondNetwork/elrond-go/process/block/bootstrapStorage"
"github.com/ElrondNetwork/elrond-go/storage"
"github.com/ElrondNetwork/elrond-go/storage/lrucache"
"github.com/ElrondNetwork/elrond-go/storage/storageUnit"
)
type bootstrapDataProvider struct {
marshalizer marshal.Marshalizer
}
// NewBootstrapDataProvider returns a new instance of bootstrapDataProvider
func NewBootstrapDataProvider(marshalizer marshal.Marshalizer) (*bootstrapDataProvider, error) {
if check.IfNil(marshalizer) {
return nil, storage.ErrNilMarshalizer
}
return &bootstrapDataProvider{
marshalizer: marshalizer,
}, nil
}
// LoadForPath returns the bootstrap data and the storer for the given persister factory and path
func (bdp *bootstrapDataProvider) LoadForPath(
persisterFactory storage.PersisterFactory,
path string,
) (*bootstrapStorage.BootstrapData, storage.Storer, error) {
persister, err := persisterFactory.Create(path)
if err != nil {
return nil, nil, err
}
defer func() {
if err != nil {
errClose := persister.Close()
if errClose != nil {
log.Debug("encountered a non-critical error closing bootstrap persister",
"error", errClose,
)
}
}
}()
cacher, err := lrucache.NewCache(10)
if err != nil {
return nil, nil, err
}
storer, err := storageUnit.NewStorageUnit(cacher, persister)
if err != nil {
return nil, nil, err
}
bootStorer, err := bdp.GetStorer(storer)
if err != nil {
return nil, nil, err
}
highestRound := bootStorer.GetHighestRound()
bootstrapData, err := bootStorer.Get(highestRound)
if err != nil {
return nil, nil, err
}
return &bootstrapData, storer, nil
}
// GetStorer returns the bootstorer
func (bdp *bootstrapDataProvider) GetStorer(storer storage.Storer) (process.BootStorer, error) {
bootStorer, err := bootstrapStorage.NewBootstrapStorer(bdp.marshalizer, storer)
if err != nil {
return nil, err
}
return bootStorer, nil
}
// IsInterfaceNil returns true if there is no value under the interface
func (bdp *bootstrapDataProvider) IsInterfaceNil() bool {
return bdp == nil
}