github.com/myafeier/fabric@v1.0.1-0.20170722181825-3a4b1f2bce86/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 DisconnectCalled chan struct{} 73 CloseCalled chan struct{} 74 Pos uint64 75 grpc.ClientStream 76 RecvCnt int32 77 MockRecv func(mock *MockBlocksDeliverer) (*orderer.DeliverResponse, error) 78 } 79 80 // Recv gets responses from the ordering service, currently mocked to return 81 // only one response with empty block. 82 func (mock *MockBlocksDeliverer) Recv() (*orderer.DeliverResponse, error) { 83 atomic.AddInt32(&mock.RecvCnt, 1) 84 return mock.MockRecv(mock) 85 } 86 87 // MockRecv mock for the Recv function 88 func MockRecv(mock *MockBlocksDeliverer) (*orderer.DeliverResponse, error) { 89 pos := mock.Pos 90 91 // Advance position for the next call 92 mock.Pos++ 93 return &orderer.DeliverResponse{ 94 Type: &orderer.DeliverResponse_Block{ 95 Block: &common.Block{ 96 Header: &common.BlockHeader{ 97 Number: pos, 98 DataHash: []byte{}, 99 PreviousHash: []byte{}, 100 }, 101 Data: &common.BlockData{ 102 Data: [][]byte{}, 103 }, 104 }}, 105 }, nil 106 } 107 108 // Send sends the envelope with request for the blocks for ordering service 109 // currently mocked and not doing anything 110 func (mock *MockBlocksDeliverer) Send(env *common.Envelope) error { 111 payload, _ := utils.GetPayload(env) 112 seekInfo := &orderer.SeekInfo{} 113 114 proto.Unmarshal(payload.Data, seekInfo) 115 116 // Read starting position 117 switch t := seekInfo.Start.Type.(type) { 118 case *orderer.SeekPosition_Oldest: 119 mock.Pos = 0 120 case *orderer.SeekPosition_Specified: 121 mock.Pos = t.Specified.Number 122 } 123 return nil 124 } 125 126 func (mock *MockBlocksDeliverer) Disconnect() { 127 mock.DisconnectCalled <- struct{}{} 128 } 129 130 func (mock *MockBlocksDeliverer) Close() { 131 if mock.CloseCalled == nil { 132 return 133 } 134 mock.CloseCalled <- struct{}{} 135 } 136 137 // MockLedgerInfo mocking implementation of LedgerInfo interface, needed 138 // for test initialization purposes 139 type MockLedgerInfo struct { 140 Height uint64 141 } 142 143 // LedgerHeight returns mocked value to the ledger height 144 func (li *MockLedgerInfo) LedgerHeight() (uint64, error) { 145 return atomic.LoadUint64(&li.Height), nil 146 }