github.com/adnan-c/fabric_e2e_couchdb@v0.6.1-preview.0.20170228180935-21ce6b23cf91/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  )
    30  
    31  // MockGossipServiceAdapter mocking structure for gossip service, used to initialize
    32  // the blocks providers implementation and asserts the number
    33  // of function calls used.
    34  type MockGossipServiceAdapter struct {
    35  	AddPayloadsCnt int32
    36  
    37  	GossipCallsCnt int32
    38  }
    39  
    40  // PeersOfChannel returns the slice with peers participating in given channel
    41  func (*MockGossipServiceAdapter) PeersOfChannel(gossip_common.ChainID) []discovery.NetworkMember {
    42  	return []discovery.NetworkMember{}
    43  }
    44  
    45  // AddPayload adds gossip payload to the local state transfer buffer
    46  func (mock *MockGossipServiceAdapter) AddPayload(chainID string, payload *gossip_proto.Payload) error {
    47  	atomic.AddInt32(&mock.AddPayloadsCnt, 1)
    48  	return nil
    49  }
    50  
    51  // Gossip message to the all peers
    52  func (mock *MockGossipServiceAdapter) Gossip(msg *gossip_proto.GossipMessage) {
    53  	atomic.AddInt32(&mock.GossipCallsCnt, 1)
    54  }
    55  
    56  // MockBlocksDeliverer mocking structure of BlocksDeliverer interface to initialize
    57  // the blocks provider implementation
    58  type MockBlocksDeliverer struct {
    59  	Pos uint64
    60  
    61  	RecvCnt int32
    62  
    63  	MockRecv func(mock *MockBlocksDeliverer) (*orderer.DeliverResponse, error)
    64  }
    65  
    66  // Recv gets responses from the ordering service, currently mocked to return
    67  // only one response with empty block.
    68  func (mock *MockBlocksDeliverer) Recv() (*orderer.DeliverResponse, error) {
    69  	atomic.AddInt32(&mock.RecvCnt, 1)
    70  	return mock.MockRecv(mock)
    71  }
    72  
    73  // MockRecv mock for the Recv function
    74  func MockRecv(mock *MockBlocksDeliverer) (*orderer.DeliverResponse, error) {
    75  	pos := mock.Pos
    76  
    77  	// Advance position for the next call
    78  	mock.Pos++
    79  	return &orderer.DeliverResponse{
    80  		Type: &orderer.DeliverResponse_Block{
    81  			Block: &common.Block{
    82  				Header: &common.BlockHeader{
    83  					Number:       pos,
    84  					DataHash:     []byte{},
    85  					PreviousHash: []byte{},
    86  				},
    87  				Data: &common.BlockData{
    88  					Data: [][]byte{},
    89  				},
    90  			}},
    91  	}, nil
    92  }
    93  
    94  // Send sends the envelope with request for the blocks for ordering service
    95  // currently mocked and not doing anything
    96  func (mock *MockBlocksDeliverer) Send(env *common.Envelope) error {
    97  	payload, _ := utils.GetPayload(env)
    98  	seekInfo := &orderer.SeekInfo{}
    99  
   100  	proto.Unmarshal(payload.Data, seekInfo)
   101  
   102  	// Read starting position
   103  	switch t := seekInfo.Start.Type.(type) {
   104  	case *orderer.SeekPosition_Oldest:
   105  		{
   106  			mock.Pos = 0
   107  		}
   108  	case *orderer.SeekPosition_Specified:
   109  		{
   110  			mock.Pos = t.Specified.Number
   111  		}
   112  	}
   113  	return nil
   114  }
   115  
   116  // MockLedgerInfo mocking implementation of LedgerInfo interface, needed
   117  // for test initialization purposes
   118  type MockLedgerInfo struct {
   119  	Height uint64
   120  }
   121  
   122  // LedgerHeight returns mocked value to the ledger height
   123  func (li *MockLedgerInfo) LedgerHeight() (uint64, error) {
   124  	return li.Height, nil
   125  }