github.com/leonlxy/hyperledger@v1.0.0-alpha.0.20170427033203-34922035d248/core/deliverservice/mocks/blocksprovider.go (about)

     1  /*
     2  Copyright IBM Corp. 2017 All Rights Reserved.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8                   http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package mocks
    18  
    19  import (
    20  	"sync/atomic"
    21  
    22  	"github.com/golang/protobuf/proto"
    23  	gossip_common "github.com/hyperledger/fabric/gossip/common"
    24  	"github.com/hyperledger/fabric/gossip/discovery"
    25  	"github.com/hyperledger/fabric/protos/common"
    26  	gossip_proto "github.com/hyperledger/fabric/protos/gossip"
    27  	"github.com/hyperledger/fabric/protos/orderer"
    28  	"github.com/hyperledger/fabric/protos/utils"
    29  	"golang.org/x/net/context"
    30  	"google.golang.org/grpc"
    31  )
    32  
    33  // MockGossipServiceAdapter mocking structure for gossip service, used to initialize
    34  // the blocks providers implementation and asserts the number
    35  // of function calls used.
    36  type MockGossipServiceAdapter struct {
    37  	AddPayloadsCnt int32
    38  
    39  	GossipBlockDisseminations chan uint64
    40  }
    41  
    42  type MockAtomicBroadcastClient struct {
    43  	BD *MockBlocksDeliverer
    44  }
    45  
    46  func (mabc *MockAtomicBroadcastClient) Broadcast(ctx context.Context, opts ...grpc.CallOption) (orderer.AtomicBroadcast_BroadcastClient, error) {
    47  	panic("Should not be used")
    48  }
    49  func (mabc *MockAtomicBroadcastClient) Deliver(ctx context.Context, opts ...grpc.CallOption) (orderer.AtomicBroadcast_DeliverClient, error) {
    50  	return mabc.BD, nil
    51  }
    52  
    53  // PeersOfChannel returns the slice with peers participating in given channel
    54  func (*MockGossipServiceAdapter) PeersOfChannel(gossip_common.ChainID) []discovery.NetworkMember {
    55  	return []discovery.NetworkMember{}
    56  }
    57  
    58  // AddPayload adds gossip payload to the local state transfer buffer
    59  func (mock *MockGossipServiceAdapter) AddPayload(chainID string, payload *gossip_proto.Payload) error {
    60  	atomic.AddInt32(&mock.AddPayloadsCnt, 1)
    61  	return nil
    62  }
    63  
    64  // Gossip message to the all peers
    65  func (mock *MockGossipServiceAdapter) Gossip(msg *gossip_proto.GossipMessage) {
    66  	mock.GossipBlockDisseminations <- msg.GetDataMsg().Payload.SeqNum
    67  }
    68  
    69  // MockBlocksDeliverer mocking structure of BlocksDeliverer interface to initialize
    70  // the blocks provider implementation
    71  type MockBlocksDeliverer struct {
    72  	Pos uint64
    73  	grpc.ClientStream
    74  	RecvCnt  int32
    75  	MockRecv func(mock *MockBlocksDeliverer) (*orderer.DeliverResponse, error)
    76  }
    77  
    78  // Recv gets responses from the ordering service, currently mocked to return
    79  // only one response with empty block.
    80  func (mock *MockBlocksDeliverer) Recv() (*orderer.DeliverResponse, error) {
    81  	atomic.AddInt32(&mock.RecvCnt, 1)
    82  	return mock.MockRecv(mock)
    83  }
    84  
    85  // MockRecv mock for the Recv function
    86  func MockRecv(mock *MockBlocksDeliverer) (*orderer.DeliverResponse, error) {
    87  	pos := mock.Pos
    88  
    89  	// Advance position for the next call
    90  	mock.Pos++
    91  	return &orderer.DeliverResponse{
    92  		Type: &orderer.DeliverResponse_Block{
    93  			Block: &common.Block{
    94  				Header: &common.BlockHeader{
    95  					Number:       pos,
    96  					DataHash:     []byte{},
    97  					PreviousHash: []byte{},
    98  				},
    99  				Data: &common.BlockData{
   100  					Data: [][]byte{},
   101  				},
   102  			}},
   103  	}, nil
   104  }
   105  
   106  // Send sends the envelope with request for the blocks for ordering service
   107  // currently mocked and not doing anything
   108  func (mock *MockBlocksDeliverer) Send(env *common.Envelope) error {
   109  	payload, _ := utils.GetPayload(env)
   110  	seekInfo := &orderer.SeekInfo{}
   111  
   112  	proto.Unmarshal(payload.Data, seekInfo)
   113  
   114  	// Read starting position
   115  	switch t := seekInfo.Start.Type.(type) {
   116  	case *orderer.SeekPosition_Oldest:
   117  		mock.Pos = 0
   118  	case *orderer.SeekPosition_Specified:
   119  		mock.Pos = t.Specified.Number
   120  	}
   121  	return nil
   122  }
   123  
   124  func (mock *MockBlocksDeliverer) Close() {}
   125  
   126  // MockLedgerInfo mocking implementation of LedgerInfo interface, needed
   127  // for test initialization purposes
   128  type MockLedgerInfo struct {
   129  	Height uint64
   130  }
   131  
   132  // LedgerHeight returns mocked value to the ledger height
   133  func (li *MockLedgerInfo) LedgerHeight() (uint64, error) {
   134  	return atomic.LoadUint64(&li.Height), nil
   135  }