/
membershipinfo.go
36 lines (30 loc) · 1.27 KB
/
membershipinfo.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package privdata
import (
"github.com/hyperledger/fabric/msp"
"github.com/hyperledger/fabric/protos/common"
)
// MembershipProvider can be used to check whether a peer is eligible to a collection or not
type MembershipProvider struct {
selfSignedData common.SignedData
IdentityDeserializerFactory func(chainID string) msp.IdentityDeserializer
}
// NewMembershipInfoProvider returns MembershipProvider
func NewMembershipInfoProvider(selfSignedData common.SignedData, identityDeserializerFunc func(chainID string) msp.IdentityDeserializer) *MembershipProvider {
return &MembershipProvider{selfSignedData: selfSignedData, IdentityDeserializerFactory: identityDeserializerFunc}
}
// AmMemberOf checks whether the current peer is a member of the given collection config
func (m *MembershipProvider) AmMemberOf(channelName string, collectionPolicyConfig *common.CollectionPolicyConfig) (bool, error) {
deserializer := m.IdentityDeserializerFactory(channelName)
accessPolicy, err := getPolicy(collectionPolicyConfig, deserializer)
if err != nil {
return false, err
}
if err := accessPolicy.Evaluate([]*common.SignedData{&m.selfSignedData}); err != nil {
return false, nil
}
return true, nil
}