[FAB-3059] SDK Go - Initialize chain

Change-Id: I15974024d51ec3806a59a7d65f86e1405b724faa
Signed-off-by: Bob Stasyszyn <bob.stasyszyn@securekey.com>

Author: bstasyszyn

fabric-client/chain.go

@@ -197,7 +197,7 @@ func TestCreateChain(t *testing.T) {
 		t.Fatalf(err.Error())
 	}
 	// Setup mock orderer
-	orderer := mockOrderer{fmt.Sprintf("0.0.0.0:1234"), nil}
+	orderer := mockOrderer{MockURL: fmt.Sprintf("0.0.0.0:1234")}
 	chain.AddOrderer(&orderer)
 	// Test with valid cofiguration
 	err = chain.CreateChannel(&CreateChannelRequest{ConfigData: configTx})
@@ -250,7 +250,7 @@ func TestJoinChannel(t *testing.T) {
 	chain, _ := setupTestChain()
 	peer, _ := CreateNewPeer(testAddress, "", "")
 	peers = append(peers, peer)
-	orderer := &mockOrderer{}
+	orderer := &mockOrderer{DeliverResponse: NewMockDeliverResponse(mocks.NewSimpleMockBlock())}
 	nonce, _ := util.GenerateRandomNonce()
 	txID, _ := util.ComputeTxID(nonce, []byte("testID"))
 	request := &JoinChannelRequest{Targets: peers, Nonce: nonce, TxID: txID}
@@ -293,6 +293,30 @@ func TestJoinChannel(t *testing.T) {
 	}
 }
 
+func TestChainInitializeFromOrderer(t *testing.T) {
+	chain, _ := setupTestChain()
+	builder := &mocks.MockConfigBlockBuilder{Index: 0, LastConfigIndex: 0}
+	orderer := &mockOrderer{DeliverResponse: NewMockDeliverResponse(builder.Build())}
+	chain.AddOrderer(orderer)
+
+	err := chain.Initialize([]byte{})
+	if err != nil {
+		t.Fatalf("channel Initialize failed : %v", err)
+	}
+	// TODO: Check data in chain
+}
+
+func TestChainInitializeFromUpdate(t *testing.T) {
+	chain, _ := setupTestChain()
+	builder := &mocks.MockConfigUpdateEnvelopeBuilder{}
+
+	err := chain.Initialize(builder.BuildBytes())
+	if err != nil {
+		t.Fatalf("channel Initialize failed : %v", err)
+	}
+	// TODO: Check data in chain
+}
+
 func setupTestChain() (Chain, error) {
 	client := NewClient()
 	user := NewUser("test")
@@ -314,7 +338,7 @@ func setupMassiveTestChain(numberOfPeers int, numberOfOrderers int) (Chain, erro
 	}
 
 	for i := 0; i < numberOfOrderers; i++ {
-		orderer := mockOrderer{fmt.Sprintf("http://mock%d.orderers.r.us", i), nil}
+		orderer := mockOrderer{MockURL: fmt.Sprintf("http://mock%d.orderers.r.us", i)}
 		chain.AddOrderer(&orderer)
 	}
 

fabric-client/chain_test.go

@@ -24,21 +24,11 @@ import (
 	ab "github.com/hyperledger/fabric/protos/orderer"
 )
 
-// TestBlock is a test block
-var testBlock = &ab.DeliverResponse{
-	Type: &ab.DeliverResponse_Block{
-		Block: &common.Block{
-			Data: &common.BlockData{
-				Data: [][]byte{[]byte("test")},
-			},
-		},
-	},
-}
-
 // mockOrderer is a mock fabricclient.Orderer
 type mockOrderer struct {
-	MockURL   string
-	MockError error
+	MockURL         string
+	MockError       error
+	DeliverResponse *ab.DeliverResponse
 }
 
 // GetURL returns the mock URL of the mock Orderer
@@ -56,6 +46,13 @@ func (o *mockOrderer) SendDeliver(envelope *SignedEnvelope) (chan *common.Block,
 	chan error) {
 	responses := make(chan *common.Block, 1)
 	errors := make(chan error, 1)
-	responses <- testBlock.GetBlock()
+	responses <- o.DeliverResponse.GetBlock()
 	return responses, errors
 }
+
+// NewMockDeliverResponse returns a mock DeliverResponse with the given block
+func NewMockDeliverResponse(block *common.Block) *ab.DeliverResponse {
+	return &ab.DeliverResponse{
+		Type: &ab.DeliverResponse_Block{Block: block},
+	}
+}

fabric-client/mockorderer.go

@@ -0,0 +1,134 @@
+/*
+Copyright SecureKey Technologies Inc. All Rights Reserved.
+
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+
+      http://www.apache.org/licenses/LICENSE-2.0
+
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package mocks
+
+import (
+	"github.com/hyperledger/fabric-sdk-go/fabric-client/util"
+	"github.com/hyperledger/fabric/protos/common"
+)
+
+// NewSimpleMockBlock returns a simple mock block
+func NewSimpleMockBlock() *common.Block {
+	return &common.Block{
+		Data: &common.BlockData{
+			Data: [][]byte{[]byte("test")},
+		},
+	}
+}
+
+// MockConfigBlockBuilder is used to build a mock Chain configuration block builder
+type MockConfigBlockBuilder struct {
+	Index           uint64
+	LastConfigIndex uint64
+}
+
+// Build will create a mock Chain configuration block
+func (b *MockConfigBlockBuilder) Build() *common.Block {
+	return &common.Block{
+		Header: &common.BlockHeader{
+			Number: b.Index,
+		},
+		Metadata: &common.BlockMetadata{
+			Metadata: b.buildMetaDataBytes(),
+		},
+		Data: &common.BlockData{
+			Data: b.buildBlockEnvelopeBytes(),
+		},
+	}
+}
+
+func (b *MockConfigBlockBuilder) buildMetaDataBytes() [][]byte {
+	return [][]byte{b.buildSignaturesMetaDataBytes(), b.buildLastConfigMetaDataBytes()}
+}
+
+func (b *MockConfigBlockBuilder) buildSignaturesMetaDataBytes() []byte {
+	return []byte("test signatures")
+}
+
+func (b *MockConfigBlockBuilder) buildLastConfigMetaDataBytes() []byte {
+	return util.MarshalOrPanic(&common.Metadata{Value: b.buildLastConfigBytes()})
+}
+
+func (b *MockConfigBlockBuilder) buildLastConfigBytes() []byte {
+	return util.MarshalOrPanic(&common.LastConfig{Index: b.LastConfigIndex})
+}
+
+func (b *MockConfigBlockBuilder) buildBlockEnvelopeBytes() [][]byte {
+	return [][]byte{b.buildEnvelopeBytes()}
+}
+
+func (b *MockConfigBlockBuilder) buildEnvelopeBytes() []byte {
+	return util.MarshalOrPanic(&common.Envelope{Payload: b.buildPayloadBytes()})
+}
+
+func (b *MockConfigBlockBuilder) buildPayloadBytes() []byte {
+	return util.MarshalOrPanic(&common.Payload{Header: b.buildHeader(), Data: b.buildConfigEnvelopeBytes()})
+}
+
+func (b *MockConfigBlockBuilder) buildHeader() *common.Header {
+	return &common.Header{ChannelHeader: b.buildChannelHeaderBytes()}
+}
+
+func (b *MockConfigBlockBuilder) buildChannelHeaderBytes() []byte {
+	return util.MarshalOrPanic(&common.ChannelHeader{Type: int32(common.HeaderType_CONFIG)})
+}
+
+func (b *MockConfigBlockBuilder) buildConfigEnvelopeBytes() []byte {
+	return util.MarshalOrPanic(&common.ConfigEnvelope{Config: b.buildConfig()})
+}
+
+func (b *MockConfigBlockBuilder) buildConfig() *common.Config {
+	return &common.Config{Sequence: 0, ChannelGroup: b.buildConfigGroup()}
+}
+
+func (b *MockConfigBlockBuilder) buildConfigGroup() *common.ConfigGroup {
+	return &common.ConfigGroup{}
+}
+
+type MockConfigUpdateEnvelopeBuilder struct {
+}
+
+func (b *MockConfigUpdateEnvelopeBuilder) BuildBytes() []byte {
+	return util.MarshalOrPanic(&common.Envelope{Payload: b.buildPayloadBytes()})
+}
+
+func (b *MockConfigUpdateEnvelopeBuilder) buildPayloadBytes() []byte {
+	return util.MarshalOrPanic(&common.Payload{Header: b.buildHeader(), Data: b.buildConfigEnvelopeBytes()})
+}
+
+func (b *MockConfigUpdateEnvelopeBuilder) buildHeader() *common.Header {
+	return &common.Header{ChannelHeader: b.buildChannelHeaderBytes()}
+}
+
+func (b *MockConfigUpdateEnvelopeBuilder) buildChannelHeaderBytes() []byte {
+	return util.MarshalOrPanic(&common.ChannelHeader{Type: int32(common.HeaderType_CONFIG_UPDATE)})
+}
+
+func (b *MockConfigUpdateEnvelopeBuilder) buildConfigEnvelopeBytes() []byte {
+	return util.MarshalOrPanic(&common.ConfigEnvelope{Config: b.buildConfig()})
+}
+
+func (b *MockConfigUpdateEnvelopeBuilder) buildConfig() *common.Config {
+	return &common.Config{Sequence: 0, ChannelGroup: b.buildConfigGroup()}
+}
+
+func (b *MockConfigUpdateEnvelopeBuilder) buildConfigGroup() *common.ConfigGroup {
+	return &common.ConfigGroup{}
+}

fabric-client/mocks/mockdata.go

@@ -20,10 +20,14 @@ limitations under the License.
 package util
 
 import (
+	"fmt"
+	"time"
+
 	"github.com/hyperledger/fabric/core/crypto/primitives"
 	ab "github.com/hyperledger/fabric/protos/orderer"
 
 	"github.com/golang/protobuf/proto"
+	google_protobuf "github.com/golang/protobuf/ptypes/timestamp"
 	"github.com/hyperledger/fabric/protos/common"
 	protos_utils "github.com/hyperledger/fabric/protos/utils"
 )
@@ -64,3 +68,44 @@ func GenerateRandomNonce() ([]byte, error) {
 func ComputeTxID(nonce []byte, creatorID []byte) (string, error) {
 	return protos_utils.ComputeProposalTxID(nonce, creatorID)
 }
+
+// NewNewestSeekPosition returns a SeekPosition that requests the newest block
+func NewNewestSeekPosition() *ab.SeekPosition {
+	return &ab.SeekPosition{Type: &ab.SeekPosition_Newest{Newest: &ab.SeekNewest{}}}
+}
+
+// NewSpecificSeekPosition returns a SeekPosition that requests the block at the given index
+func NewSpecificSeekPosition(index uint64) *ab.SeekPosition {
+	return &ab.SeekPosition{Type: &ab.SeekPosition_Specified{Specified: &ab.SeekSpecified{Number: index}}}
+}
+
+// GetLastConfigFromBlock returns the LastConfig data from the given block
+func GetLastConfigFromBlock(block *common.Block) (*common.LastConfig, error) {
+	metadata := &common.Metadata{}
+	err := proto.Unmarshal(block.Metadata.Metadata[common.BlockMetadataIndex_LAST_CONFIG], metadata)
+	if err != nil {
+		return nil, fmt.Errorf("unable to unmarshal meta data at index %d: %v", common.BlockMetadataIndex_LAST_CONFIG, err)
+	}
+
+	lastConfig := &common.LastConfig{}
+	err = proto.Unmarshal(metadata.Value, lastConfig)
+	if err != nil {
+		return nil, fmt.Errorf("unable to unmarshal last config from meta data: %v", err)
+	}
+
+	return lastConfig, err
+}
+
+// BuildChannelHeader builds a ChannelHeader with the given parameters
+func BuildChannelHeader(channelName string, headerType common.HeaderType, txID string, epoch uint64) (*common.ChannelHeader, error) {
+	now := time.Now()
+	channelHeader := &common.ChannelHeader{
+		Type:      int32(headerType),
+		Version:   1,
+		Timestamp: &google_protobuf.Timestamp{Seconds: int64(now.Second()), Nanos: int32(now.Nanosecond())},
+		ChannelId: channelName,
+		Epoch:     epoch,
+		TxId:      txID,
+	}
+	return channelHeader, nil
+}