go_study/fabric-main/orderer/common/server/util.go

62 lines
1.8 KiB
Go

/*
Copyright IBM Corp. 2017 All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package server
import (
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric-protos-go/common"
"github.com/hyperledger/fabric/bccsp"
"github.com/hyperledger/fabric/common/channelconfig"
"github.com/hyperledger/fabric/common/ledger/blockledger"
"github.com/hyperledger/fabric/common/ledger/blockledger/fileledger"
"github.com/hyperledger/fabric/common/metrics"
config "github.com/hyperledger/fabric/orderer/common/localconfig"
"github.com/pkg/errors"
)
func createLedgerFactory(conf *config.TopLevel, metricsProvider metrics.Provider) (blockledger.Factory, error) {
ld := conf.FileLedger.Location
if ld == "" {
logger.Panic("Orderer.FileLedger.Location must be set")
}
logger.Debug("Ledger dir:", ld)
lf, err := fileledger.New(ld, metricsProvider)
if err != nil {
return nil, errors.WithMessage(err, "Error in opening ledger factory")
}
return lf, nil
}
// validateBootstrapBlock returns whether this block can be used as a bootstrap block.
// A bootstrap block is a block of a system channel, and needs to have a ConsortiumsConfig.
func validateBootstrapBlock(block *common.Block, bccsp bccsp.BCCSP) error {
if block == nil {
return errors.New("nil block")
}
if block.Data == nil || len(block.Data.Data) == 0 {
return errors.New("empty block data")
}
firstTransaction := &common.Envelope{}
if err := proto.Unmarshal(block.Data.Data[0], firstTransaction); err != nil {
return errors.Wrap(err, "failed extracting envelope from block")
}
bundle, err := channelconfig.NewBundleFromEnvelope(firstTransaction, bccsp)
if err != nil {
return err
}
_, exists := bundle.ConsortiumsConfig()
if !exists {
return errors.New("the block isn't a system channel block because it lacks ConsortiumsConfig")
}
return nil
}