go_study/fabric-main/core/common/privdata/membershipinfo.go

57 lines
2.1 KiB
Go

/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package privdata
import (
"github.com/hyperledger/fabric-protos-go/peer"
"github.com/hyperledger/fabric/common/flogging"
"github.com/hyperledger/fabric/core/chaincode/implicitcollection"
"github.com/hyperledger/fabric/msp"
"github.com/hyperledger/fabric/protoutil"
)
var logger = flogging.MustGetLogger("common.privdata")
// MembershipProvider can be used to check whether a peer is eligible to a collection or not
type MembershipProvider struct {
mspID string
selfSignedData protoutil.SignedData
IdentityDeserializerFactory func(chainID string) msp.IdentityDeserializer
myImplicitCollectionName string
}
// NewMembershipInfoProvider returns MembershipProvider
func NewMembershipInfoProvider(mspID string, selfSignedData protoutil.SignedData, identityDeserializerFunc func(chainID string) msp.IdentityDeserializer) *MembershipProvider {
return &MembershipProvider{
mspID: mspID,
selfSignedData: selfSignedData,
IdentityDeserializerFactory: identityDeserializerFunc,
myImplicitCollectionName: implicitcollection.NameForOrg(mspID),
}
}
// AmMemberOf checks whether the current peer is a member of the given collection config.
// It is used when a chaincode is upgraded to see if the peer's org has become eligible after a collection change.
func (m *MembershipProvider) AmMemberOf(channelName string, collectionPolicyConfig *peer.CollectionPolicyConfig) (bool, error) {
deserializer := m.IdentityDeserializerFactory(channelName)
// Do a simple check to see if the mspid matches any principal identities in the SignaturePolicy - FAB-17059
if collectionPolicyConfig.GetSignaturePolicy() == nil {
logger.Warningf("collection membership policy is nil")
return false, nil
}
memberOrgs := getMemberOrgs(collectionPolicyConfig.GetSignaturePolicy().GetIdentities(), deserializer)
_, ok := memberOrgs[m.mspID]
return ok, nil
}
func (m *MembershipProvider) MyImplicitCollectionName() string {
return m.myImplicitCollectionName
}