forked from hyperledger/fabric-sdk-go
/
mockbroadcastserver.go
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/
mockbroadcastserver.go
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/*
Copyright SecureKey Technologies Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package mocks
import (
"fmt"
"io"
"net"
"sync"
"github.com/golang/protobuf/proto"
po "github.com/hyperledger/fabric-sdk-go/internal/github.com/hyperledger/fabric/protos/orderer"
"github.com/hyperledger/fabric-sdk-go/pkg/fab/events/service/mocks"
"github.com/hyperledger/fabric-sdk-go/pkg/util/test"
"github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/common"
pb "github.com/hyperledger/fabric-sdk-go/third_party/github.com/hyperledger/fabric/protos/peer"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
)
// TestBlock is a test block
var TestBlock = &po.DeliverResponse{
Type: &po.DeliverResponse_Block{
Block: &common.Block{
Data: &common.BlockData{
Data: [][]byte{[]byte("test")},
},
},
},
}
var broadcastResponseSuccess = &po.BroadcastResponse{Status: common.Status_SUCCESS}
var broadcastResponseError = &po.BroadcastResponse{Status: common.Status_INTERNAL_SERVER_ERROR}
// MockBroadcastServer mock broadcast server
type MockBroadcastServer struct {
DeliverError error
BroadcastError error
Creds credentials.TransportCredentials
blkNum uint64
DeliverResponse *po.DeliverResponse
BroadcastCustomResponse *po.BroadcastResponse
srv *grpc.Server
wg sync.WaitGroup
BroadcastInternalServerError bool
// Use the MockBroadCastServer with either a common.Block or a pb.FilteredBlock channel (do not set both)
Deliveries chan *common.Block
FilteredDeliveries chan *pb.FilteredBlock
// mutexes to ensure parallel channel deliveries are sent in sequence
delMtx sync.Mutex
filteredDelMtx sync.Mutex
}
// Broadcast mock broadcast
func (m *MockBroadcastServer) Broadcast(server po.AtomicBroadcast_BroadcastServer) error {
res, err := server.Recv()
if err == io.EOF {
return nil
}
if err != nil {
return err
}
if m.BroadcastError != nil {
return m.BroadcastError
}
if m.BroadcastInternalServerError {
return server.Send(broadcastResponseError)
}
if m.BroadcastCustomResponse != nil {
return server.Send(m.BroadcastCustomResponse)
}
err = server.Send(broadcastResponseSuccess)
if err != nil {
return err
}
return m.mockBlockDelivery(res.Payload)
}
func (m *MockBroadcastServer) mockBlockDelivery(payload []byte) error {
pl := &common.Payload{}
err := proto.Unmarshal(payload, pl)
if err != nil {
return err
}
// if payload is empty, then no need to broadcast to block DeliveryServer
if pl == nil || pl.Header == nil {
return nil
}
chdr := &common.ChannelHeader{}
err = proto.Unmarshal(pl.Header.ChannelHeader, chdr)
if err != nil {
return err
}
if m.Deliveries != nil {
go func() {
m.delMtx.Lock()
defer m.delMtx.Unlock()
block := mocks.NewBlock(chdr.ChannelId,
mocks.NewTransaction(chdr.TxId, pb.TxValidationCode_VALID, common.HeaderType_MESSAGE),
)
// m.blkNum is used by FilteredBlock only
m.Deliveries <- block
}()
} else if m.FilteredDeliveries != nil {
go func() {
m.filteredDelMtx.Lock()
defer m.filteredDelMtx.Unlock()
filteredBlock := mocks.NewFilteredBlock(chdr.ChannelId,
mocks.NewFilteredTx(chdr.TxId, pb.TxValidationCode_VALID),
)
// increase m.blkNum to mock adding of filtered blocks to the ledger
m.blkNum++
filteredBlock.Number = m.blkNum
m.FilteredDeliveries <- filteredBlock
}()
}
return nil
}
// Deliver mock deliver
func (m *MockBroadcastServer) Deliver(server po.AtomicBroadcast_DeliverServer) error {
if m.DeliverError != nil {
return m.DeliverError
}
if m.DeliverResponse != nil {
if _, err := server.Recv(); err != nil {
return err
}
if err := server.SendMsg(m.DeliverResponse); err != nil {
return err
}
return nil
}
if _, err := server.Recv(); err != nil {
return err
}
if err := server.Send(TestBlock); err != nil {
return err
}
return nil
}
// Start the mock broadcast server
func (m *MockBroadcastServer) Start(address string) string {
if m.srv != nil {
panic("MockBroadcastServer already started")
}
// pass in TLS creds if present
if m.Creds != nil {
m.srv = grpc.NewServer(grpc.Creds(m.Creds))
} else {
m.srv = grpc.NewServer()
}
lis, err := net.Listen("tcp", address)
if err != nil {
panic(fmt.Sprintf("Error starting BroadcastServer %s", err))
}
addr := lis.Addr().String()
test.Logf("Starting MockEventServer [%s]", addr)
po.RegisterAtomicBroadcastServer(m.srv, m)
m.wg.Add(1)
go func() {
defer m.wg.Done()
if err := m.srv.Serve(lis); err != nil {
test.Logf("StartMockBroadcastServer failed [%s]", err)
}
}()
return addr
}
// Stop the mock broadcast server and wait for completion.
func (m *MockBroadcastServer) Stop() {
if m.srv == nil {
panic("MockBroadcastServer not started")
}
m.srv.Stop()
m.wg.Wait()
m.srv = nil
}