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mockdiscoveryserver.go
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mockdiscoveryserver.go
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/*
Copyright SecureKey Technologies Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package mocks
import (
"context"
"time"
"github.com/golang/protobuf/proto"
"github.com/hyperledger/fabric-protos-go/discovery"
"github.com/hyperledger/fabric-protos-go/gossip"
"github.com/pkg/errors"
)
// MockDiscoveryServer is a mock Discovery server
type MockDiscoveryServer struct {
localPeersByOrg map[string]*discovery.Peers
peersByOrg map[string]*discovery.Peers
}
// MockDiscoveryServerOpt is an option for the MockDiscoveryServer
type MockDiscoveryServerOpt func(s *MockDiscoveryServer)
// WithPeers adds a set of mock peers to the MockDiscoveryServer
func WithPeers(peers ...*MockDiscoveryPeerEndpoint) MockDiscoveryServerOpt {
return func(s *MockDiscoveryServer) {
s.peersByOrg = asPeersByOrg(peers)
}
}
// WithLocalPeers adds a set of mock peers to the MockDiscoveryServer
func WithLocalPeers(peers ...*MockDiscoveryPeerEndpoint) MockDiscoveryServerOpt {
return func(s *MockDiscoveryServer) {
s.localPeersByOrg = asPeersByOrg(peers)
}
}
// NewServer returns a new MockDiscoveryServer
func NewServer(opts ...MockDiscoveryServerOpt) *MockDiscoveryServer {
s := &MockDiscoveryServer{}
for _, opt := range opts {
opt(s)
}
return s
}
// Discover Processes the given Discovery request and returns a mock response
func (s *MockDiscoveryServer) Discover(ctx context.Context, request *discovery.SignedRequest) (*discovery.Response, error) {
if request == nil {
return nil, errors.New("nil request")
}
req := &discovery.Request{}
err := proto.Unmarshal(request.Payload, req)
if err != nil {
return nil, errors.Wrap(err, "failed parsing request")
}
if req.Authentication == nil {
return nil, errors.New("access denied, no authentication info in request")
}
if len(req.Authentication.ClientIdentity) == 0 {
return nil, errors.New("access denied, client identity wasn't supplied")
}
var results []*discovery.QueryResult
for _, q := range req.Queries {
result := s.processQuery(q)
if result != nil {
results = append(results, result)
}
}
return &discovery.Response{
Results: results,
}, nil
}
func (s *MockDiscoveryServer) processQuery(q *discovery.Query) *discovery.QueryResult {
if q.Channel == "" {
if query := q.GetLocalPeers(); query != nil {
return s.getLocalPeerQueryResult()
}
} else {
if query := q.GetPeerQuery(); query != nil {
return s.getPeerQueryResult()
}
if query := q.GetConfigQuery(); query != nil {
return s.getConfigQueryResult()
}
if query := q.GetCcQuery(); query != nil {
return s.getCCQueryResult()
}
}
return nil
}
func (s *MockDiscoveryServer) getLocalPeerQueryResult() *discovery.QueryResult {
if s.localPeersByOrg != nil {
return &discovery.QueryResult{
Result: &discovery.QueryResult_Members{
Members: &discovery.PeerMembershipResult{
PeersByOrg: s.localPeersByOrg,
},
},
}
}
return &discovery.QueryResult{
Result: &discovery.QueryResult_Error{
Error: &discovery.Error{
Content: "no peers",
},
},
}
}
func (s *MockDiscoveryServer) getPeerQueryResult() *discovery.QueryResult {
if s.peersByOrg != nil {
return &discovery.QueryResult{
Result: &discovery.QueryResult_Members{
Members: &discovery.PeerMembershipResult{
PeersByOrg: s.peersByOrg,
},
},
}
}
return &discovery.QueryResult{
Result: &discovery.QueryResult_Error{
Error: &discovery.Error{
Content: "no peers",
},
},
}
}
func (s *MockDiscoveryServer) getConfigQueryResult() *discovery.QueryResult {
return &discovery.QueryResult{
Result: &discovery.QueryResult_Error{
Error: &discovery.Error{
Content: "not implemented",
},
},
}
}
func (s *MockDiscoveryServer) getCCQueryResult() *discovery.QueryResult {
return &discovery.QueryResult{
Result: &discovery.QueryResult_Error{
Error: &discovery.Error{
Content: "not implemented",
},
},
}
}
func asDiscoveryPeer(p *MockDiscoveryPeerEndpoint) *discovery.Peer {
memInfoMsg := &gossip.GossipMessage{
Content: &gossip.GossipMessage_AliveMsg{
AliveMsg: &gossip.AliveMessage{
Membership: &gossip.Member{
Endpoint: p.Endpoint,
},
Timestamp: &gossip.PeerTime{
SeqNum: uint64(1000),
IncNum: uint64(time.Now().UnixNano()),
},
},
},
}
memInfoPayload, err := proto.Marshal(memInfoMsg)
if err != nil {
panic(err.Error())
}
stateInfoMsg := &gossip.GossipMessage{
Content: &gossip.GossipMessage_StateInfo{
StateInfo: &gossip.StateInfo{
Properties: &gossip.Properties{
LedgerHeight: p.LedgerHeight,
Chaincodes: p.Chaincodes,
LeftChannel: p.LeftChannel,
},
Timestamp: &gossip.PeerTime{
SeqNum: uint64(1000),
IncNum: uint64(time.Now().UnixNano()),
},
},
},
}
stateInfoPayload, err := proto.Marshal(stateInfoMsg)
if err != nil {
panic(err.Error())
}
return &discovery.Peer{
MembershipInfo: &gossip.Envelope{
Payload: memInfoPayload,
},
StateInfo: &gossip.Envelope{
Payload: stateInfoPayload,
},
}
}
// MockDiscoveryPeerEndpoint contains information about a Discover peer endpoint
type MockDiscoveryPeerEndpoint struct {
MSPID string
Endpoint string
LedgerHeight uint64
Chaincodes []*gossip.Chaincode
LeftChannel bool
}
func asPeersByOrg(peers []*MockDiscoveryPeerEndpoint) map[string]*discovery.Peers {
peersByOrg := make(map[string]*discovery.Peers)
for _, p := range peers {
peers, ok := peersByOrg[p.MSPID]
if !ok {
peers = &discovery.Peers{}
peersByOrg[p.MSPID] = peers
}
peers.Peers = append(peers.Peers, asDiscoveryPeer(p))
}
return peersByOrg
}