Merge "[FAB-6121]Implement peer channel getinfo command"

peer/channel/channel.go

@@ -34,8 +34,8 @@ import (
 
 const (
 	channelFuncName = "channel"
-	shortDes        = "Operate a channel: create|fetch|join|list|update."
-	longDes         = "Operate a channel: create|fetch|join|list|update."
+	shortDes        = "Operate a channel: create|fetch|join|list|update|signconfigtx|getinfo."
+	longDes         = "Operate a channel: create|fetch|join|list|update|signconfigtx|getinfo."
 )
 
 var logger = flogging.MustGetLogger("channelCmd")
@@ -74,6 +74,7 @@ func Cmd(cf *ChannelCmdFactory) *cobra.Command {
 	channelCmd.AddCommand(listCmd(cf))
 	channelCmd.AddCommand(updateCmd(cf))
 	channelCmd.AddCommand(signconfigtxCmd(cf))
+	channelCmd.AddCommand(getinfoCmd(cf))
 
 	return channelCmd
 }

peer/channel/getinfo.go

@@ -0,0 +1,113 @@
+/*
+Copyright IBM Corp. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0
+*/
+
+package channel
+
+import (
+	"fmt"
+
+	"github.com/pkg/errors"
+
+	"encoding/json"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/hyperledger/fabric/core/scc/qscc"
+	"github.com/hyperledger/fabric/peer/common"
+	cb "github.com/hyperledger/fabric/protos/common"
+	pb "github.com/hyperledger/fabric/protos/peer"
+	"github.com/hyperledger/fabric/protos/utils"
+	"github.com/spf13/cobra"
+	"golang.org/x/net/context"
+)
+
+func getinfoCmd(cf *ChannelCmdFactory) *cobra.Command {
+	getinfoCmd := &cobra.Command{
+		Use:   "getinfo",
+		Short: "get blockchain information of a specified channel.",
+		Long:  "get blockchain information of a specified channel. Requires '-c'.",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return getinfo(cf)
+		},
+	}
+	flagList := []string{
+		"channelID",
+	}
+	attachFlags(getinfoCmd, flagList)
+
+	return getinfoCmd
+}
+func (cc *endorserClient) getBlockChainInfo() (*cb.BlockchainInfo, error) {
+	var err error
+
+	invocation := &pb.ChaincodeInvocationSpec{
+		ChaincodeSpec: &pb.ChaincodeSpec{
+			Type:        pb.ChaincodeSpec_Type(pb.ChaincodeSpec_Type_value["GOLANG"]),
+			ChaincodeId: &pb.ChaincodeID{Name: "qscc"},
+			Input:       &pb.ChaincodeInput{Args: [][]byte{[]byte(qscc.GetChainInfo), []byte(chainID)}},
+		},
+	}
+
+	var prop *pb.Proposal
+	c, _ := cc.cf.Signer.Serialize()
+	prop, _, err = utils.CreateProposalFromCIS(cb.HeaderType_ENDORSER_TRANSACTION, "", invocation, c)
+	if err != nil {
+		return nil, errors.WithMessage(err, "cannot create proposal")
+	}
+
+	var signedProp *pb.SignedProposal
+	signedProp, err = utils.GetSignedProposal(prop, cc.cf.Signer)
+	if err != nil {
+		return nil, errors.WithMessage(err, "cannot create signed proposal")
+	}
+
+	proposalResp, err := cc.cf.EndorserClient.ProcessProposal(context.Background(), signedProp)
+	if err != nil {
+		return nil, errors.WithMessage(err, "failed sending proposal")
+	}
+
+	if proposalResp.Response == nil || proposalResp.Response.Status != 200 {
+		return nil, errors.Errorf("received bad response, status %s", proposalResp.Response.Status)
+	}
+
+	blockChainInfo := &cb.BlockchainInfo{}
+	err = proto.Unmarshal(proposalResp.Response.Payload, blockChainInfo)
+	if err != nil {
+		return nil, errors.Wrap(err, "cannot read qscc response")
+	}
+
+	return blockChainInfo, nil
+
+}
+
+func getinfo(cf *ChannelCmdFactory) error {
+	//the global chainID filled by the "-c" command
+	if chainID == common.UndefinedParamValue {
+		return errors.New("Must supply channel ID")
+	}
+
+	var err error
+	if cf == nil {
+		cf, err = InitCmdFactory(EndorserRequired, OrdererNotRequired)
+		if err != nil {
+			return err
+		}
+	}
+
+	client := &endorserClient{cf}
+
+	blockChainInfo, err := client.getBlockChainInfo()
+	if err != nil {
+		return err
+	}
+	jsonBytes, err := json.Marshal(blockChainInfo)
+	if err != nil {
+		return err
+	}
+
+	fmt.Printf("Blockchain info: %s\n", string(jsonBytes))
+
+	return nil
+}

peer/channel/getinfo_test.go

@@ -0,0 +1,77 @@
+/*
+Copyright IBM Corp. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0
+*/
+
+package channel
+
+import (
+	"testing"
+
+	"github.com/golang/protobuf/proto"
+	"github.com/hyperledger/fabric/peer/common"
+	cb "github.com/hyperledger/fabric/protos/common"
+	pb "github.com/hyperledger/fabric/protos/peer"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestGetChannelInfo(t *testing.T) {
+	InitMSP()
+	resetFlags()
+
+	mockBlockchainInfo := &cb.BlockchainInfo{
+		Height:            1,
+		CurrentBlockHash:  []byte("CurrentBlockHash"),
+		PreviousBlockHash: []byte("PreviousBlockHash"),
+	}
+	mockPayload, err := proto.Marshal(mockBlockchainInfo)
+	assert.NoError(t, err)
+
+	mockResponse := &pb.ProposalResponse{
+		Response: &pb.Response{
+			Status:  200,
+			Payload: mockPayload,
+		},
+		Endorsement: &pb.Endorsement{},
+	}
+
+	signer, err := common.GetDefaultSigner()
+	assert.NoError(t, err)
+
+	mockCF := &ChannelCmdFactory{
+		EndorserClient:   common.GetMockEndorserClient(mockResponse, nil),
+		BroadcastFactory: mockBroadcastClientFactory,
+		Signer:           signer,
+	}
+
+	cmd := getinfoCmd(mockCF)
+	AddFlags(cmd)
+
+	args := []string{"-c", mockChannel}
+	cmd.SetArgs(args)
+
+	assert.NoError(t, cmd.Execute())
+}
+
+func TestGetChannelInfoMissingChannelID(t *testing.T) {
+	InitMSP()
+	resetFlags()
+
+	signer, err := common.GetDefaultSigner()
+	if err != nil {
+		t.Fatalf("Get default signer error: %v", err)
+	}
+
+	mockCF := &ChannelCmdFactory{
+		Signer: signer,
+	}
+
+	cmd := getinfoCmd(mockCF)
+
+	AddFlags(cmd)
+
+	cmd.SetArgs([]string{})
+
+	assert.Error(t, cmd.Execute())
+}