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msp.go
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msp.go
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/*
Copyright IBM Corp. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package channelconfig
import (
"fmt"
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric/msp"
"github.com/hyperledger/fabric/msp/cache"
mspprotos "github.com/hyperledger/fabric/protos/msp"
"github.com/pkg/errors"
)
type pendingMSPConfig struct {
mspConfig *mspprotos.MSPConfig
msp msp.MSP
}
// MSPConfigHandler
type MSPConfigHandler struct {
version msp.MSPVersion
idMap map[string]*pendingMSPConfig
}
func NewMSPConfigHandler(mspVersion msp.MSPVersion) *MSPConfigHandler {
return &MSPConfigHandler{
version: mspVersion,
idMap: make(map[string]*pendingMSPConfig),
}
}
// ProposeValue called when an org defines an MSP
func (bh *MSPConfigHandler) ProposeMSP(mspConfig *mspprotos.MSPConfig) (msp.MSP, error) {
var theMsp msp.MSP
var err error
switch mspConfig.Type {
case int32(msp.FABRIC):
// create the bccsp msp instance
mspInst, err := msp.New(&msp.BCCSPNewOpts{NewBaseOpts: msp.NewBaseOpts{Version: bh.version}})
if err != nil {
return nil, errors.WithMessage(err, "creating the MSP manager failed")
}
// add a cache layer on top
theMsp, err = cache.New(mspInst)
if err != nil {
return nil, errors.WithMessage(err, "creating the MSP cache failed")
}
case int32(msp.IDEMIX):
// create the idemix msp instance
theMsp, err = msp.New(&msp.IdemixNewOpts{
NewBaseOpts: msp.NewBaseOpts{Version: bh.version},
})
if err != nil {
return nil, errors.WithMessage(err, "creating the MSP manager failed")
}
default:
return nil, errors.New(fmt.Sprintf("Setup error: unsupported msp type %d", mspConfig.Type))
}
// set it up
err = theMsp.Setup(mspConfig)
if err != nil {
return nil, errors.WithMessage(err, "setting up the MSP manager failed")
}
// add the MSP to the map of pending MSPs
mspID, _ := theMsp.GetIdentifier()
existingPendingMSPConfig, ok := bh.idMap[mspID]
if ok && !proto.Equal(existingPendingMSPConfig.mspConfig, mspConfig) {
return nil, errors.New(fmt.Sprintf("Attempted to define two different versions of MSP: %s", mspID))
}
if !ok {
bh.idMap[mspID] = &pendingMSPConfig{
mspConfig: mspConfig,
msp: theMsp,
}
}
return theMsp, nil
}
func (bh *MSPConfigHandler) CreateMSPManager() (msp.MSPManager, error) {
mspList := make([]msp.MSP, len(bh.idMap))
i := 0
for _, pendingMSP := range bh.idMap {
mspList[i] = pendingMSP.msp
i++
}
manager := msp.NewMSPManager()
err := manager.Setup(mspList)
return manager, err
}