79 lines
2.2 KiB
Go
79 lines
2.2 KiB
Go
/*
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Copyright IBM Corp. 2017 All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package policy
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import (
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"github.com/golang/protobuf/proto"
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protomsp "github.com/hyperledger/fabric-protos-go/msp"
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"github.com/hyperledger/fabric/msp"
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"github.com/pkg/errors"
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)
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const (
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// Admins is the label for the local MSP admins
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Admins = "Admins"
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// Members is the label for the local MSP members
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Members = "Members"
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)
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type MSPPrincipalGetter interface {
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// Get returns an MSP principal for the given role
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Get(role string) (*protomsp.MSPPrincipal, error)
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}
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func NewLocalMSPPrincipalGetter(localMSP msp.MSP) MSPPrincipalGetter {
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return &localMSPPrincipalGetter{
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localMSP: localMSP,
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}
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}
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type localMSPPrincipalGetter struct {
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localMSP msp.MSP
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}
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func (m *localMSPPrincipalGetter) Get(role string) (*protomsp.MSPPrincipal, error) {
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mspid, err := m.localMSP.GetIdentifier()
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if err != nil {
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return nil, errors.WithMessage(err, "could not extract local msp identifier")
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}
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switch role {
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case Admins:
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principalBytes, err := proto.Marshal(&protomsp.MSPRole{Role: protomsp.MSPRole_ADMIN, MspIdentifier: mspid})
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if err != nil {
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return nil, errors.Wrap(err, "marshalling failed")
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}
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return &protomsp.MSPPrincipal{
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PrincipalClassification: protomsp.MSPPrincipal_ROLE,
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Principal: principalBytes,
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}, nil
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case Members:
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principalBytes, err := proto.Marshal(&protomsp.MSPRole{Role: protomsp.MSPRole_MEMBER, MspIdentifier: mspid})
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if err != nil {
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return nil, errors.Wrap(err, "marshalling failed")
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}
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return &protomsp.MSPPrincipal{
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PrincipalClassification: protomsp.MSPPrincipal_ROLE,
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Principal: principalBytes,
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}, nil
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default:
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return nil, errors.Errorf("MSP Principal role [%s] not recognized", role)
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}
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}
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