/
mockdelserver.go
executable file
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/
mockdelserver.go
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/*
Copyright SecureKey Technologies Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package mocks
import (
"io"
"sync"
cb "github.com/hyperledger/fabric-protos-go/common"
pb "github.com/hyperledger/fabric-protos-go/peer"
"github.com/hyperledger/fabric-sdk-go/pkg/fab/mocks"
"github.com/hyperledger/fabric-sdk-go/pkg/util/test"
"github.com/pkg/errors"
)
// MockDeliverServer is a mock deliver server
type MockDeliverServer struct {
sync.RWMutex
status cb.Status
disconnErr error
// Note: the mock broadcast server should setup either deliveries or fileteredDeliveries, not both at once.
// the same for mock endorser server, it should either call NewMockDeliverServerWithDeliveries or NewMockDeliverServerWithFilteredDeliveries
// to get a new instance of MockDeliverServer
//for mocking communication with a mockBroadCastServer, this channel will receive common blocks sent by that mockBroadcastServer
deliveries <-chan *cb.Block
// for mocking communcation with mockBroadCastServer, this channel will received filtered blocks sent by that mockBradcastServer
filteredDeliveries <-chan *pb.FilteredBlock
}
// NewMockDeliverServer returns a new MockDeliverServer
func NewMockDeliverServer() *MockDeliverServer {
return &MockDeliverServer{
status: cb.Status_UNKNOWN,
}
}
// NewMockDeliverServerWithDeliveries returns a new MockDeliverServer using Deliveries channel with common.Block
func NewMockDeliverServerWithDeliveries(d <-chan *cb.Block) *MockDeliverServer {
return &MockDeliverServer{
status: cb.Status_UNKNOWN,
deliveries: d,
}
}
// NewMockDeliverServerWithFilteredDeliveries returns a new MockDeliverServer using filteredDeliveries channel with FilteredBlock
func NewMockDeliverServerWithFilteredDeliveries(d <-chan *pb.FilteredBlock) *MockDeliverServer {
return &MockDeliverServer{
status: cb.Status_UNKNOWN,
filteredDeliveries: d,
}
}
// SetStatus sets the status to return when calling Deliver or DeliverFiltered
func (s *MockDeliverServer) SetStatus(status cb.Status) {
s.Lock()
defer s.Unlock()
s.status = status
}
// Status returns the status that's returned when calling Deliver or DeliverFiltered
func (s *MockDeliverServer) Status() cb.Status {
s.RLock()
defer s.RUnlock()
return s.status
}
// Disconnect terminates the stream and returns the given error to the client
func (s *MockDeliverServer) Disconnect(err error) {
s.Lock()
defer s.Unlock()
s.disconnErr = err
}
func (s *MockDeliverServer) disconnectErr() error {
s.RLock()
defer s.RUnlock()
return s.disconnErr
}
// Deliver delivers a stream of blocks
func (s *MockDeliverServer) Deliver(srv pb.Deliver_DeliverServer) error {
status := s.Status()
if status != cb.Status_UNKNOWN {
err := srv.Send(&pb.DeliverResponse{
Type: &pb.DeliverResponse_Status{
Status: status,
},
})
return errors.Errorf("returning error status: %s %s", status, err)
}
disconnect := make(chan bool)
go s.handleEvents(srv, disconnect)
for {
envelope, err := srv.Recv()
if err == io.EOF || envelope == nil {
break
}
err = s.disconnectErr()
if err != nil {
return err
}
newBlock := mocks.NewSimpleMockBlock()
err1 := srv.Send(&pb.DeliverResponse{
Type: &pb.DeliverResponse_Block{
Block: newBlock,
},
})
if err1 != nil {
return err1
}
if err == io.EOF {
test.Logf("*** mockdelserver err is io.EOF or envelope == nil, disconnecting from Deliver..")
disconnect <- true
break
}
}
return nil
}
// DeliverWithPrivateData is not implemented
func (s *MockDeliverServer) DeliverWithPrivateData(pb.Deliver_DeliverWithPrivateDataServer) error {
return errors.New("not implemented")
}
// DeliverFiltered delivers a stream of filtered blocks
func (s *MockDeliverServer) DeliverFiltered(srv pb.Deliver_DeliverFilteredServer) error {
if s.status != cb.Status_UNKNOWN {
err1 := srv.Send(&pb.DeliverResponse{
Type: &pb.DeliverResponse_Status{
Status: s.status,
},
})
return errors.Errorf("returning error status: %s %s", s.status, err1)
}
disconnect := make(chan bool)
go s.handleFilteredEvents(srv, disconnect)
for {
envelope, err := srv.Recv()
if err == io.EOF || envelope == nil {
disconnect <- true
break
}
err = s.disconnectErr()
if err != nil {
disconnect <- true
return err
}
err1 := srv.Send(&pb.DeliverResponse{
Type: &pb.DeliverResponse_FilteredBlock{
FilteredBlock: &pb.FilteredBlock{},
},
})
if err1 != nil {
return err1
}
if err == io.EOF {
test.Logf("*** mockdelserver err is io.EOF or envelope == nil, disconnecting from DeliverFiltered..")
disconnect <- true
break
}
}
return nil
}
func (s *MockDeliverServer) handleEvents(srv pb.Deliver_DeliverServer, disconnect chan bool) {
for {
select {
case block, ok := <-s.deliveries:
if ok {
//test.Logf("handling block event:[%+v]", block)
err1 := srv.Send(&pb.DeliverResponse{
Type: &pb.DeliverResponse_Block{
Block: block,
},
})
if err1 != nil {
test.Logf("got error during handle block event: %s", err1)
}
} else {
test.Logf("channel is closed")
return
}
case <-disconnect:
return
}
}
}
func (s *MockDeliverServer) handleFilteredEvents(srv pb.Deliver_DeliverServer, disconnect chan bool) {
for {
select {
case filteredBlock, ok := <-s.filteredDeliveries:
if ok {
//test.Logf("handling filteredBlock event: [%+v], blockNumber: %i", filteredBlock, filteredBlock.Number)
err1 := srv.Send(&pb.DeliverResponse{
Type: &pb.DeliverResponse_FilteredBlock{
FilteredBlock: filteredBlock,
},
})
if err1 != nil {
test.Logf("got error during handle filteredBlock event: %s", err1)
}
} else {
test.Logf("channel is closed")
return
}
case <-disconnect:
return
}
}
}