github.com/defanghe/fabric@v2.1.1+incompatible/internal/peer/channel/join.go (about)

     1  /*
     2  Copyright IBM Corp. 2017 All Rights Reserved.
     3  
     4  SPDX-License-Identifier: Apache-2.0
     5  */
     6  
     7  package channel
     8  
     9  import (
    10  	"context"
    11  	"errors"
    12  	"fmt"
    13  	"io/ioutil"
    14  
    15  	pcommon "github.com/hyperledger/fabric-protos-go/common"
    16  	pb "github.com/hyperledger/fabric-protos-go/peer"
    17  	"github.com/hyperledger/fabric/core/scc/cscc"
    18  	"github.com/hyperledger/fabric/internal/peer/common"
    19  	"github.com/hyperledger/fabric/protoutil"
    20  	"github.com/spf13/cobra"
    21  )
    22  
    23  const commandDescription = "Joins the peer to a channel."
    24  
    25  func joinCmd(cf *ChannelCmdFactory) *cobra.Command {
    26  	// Set the flags on the channel start command.
    27  	joinCmd := &cobra.Command{
    28  		Use:   "join",
    29  		Short: commandDescription,
    30  		Long:  commandDescription,
    31  		RunE: func(cmd *cobra.Command, args []string) error {
    32  			return join(cmd, args, cf)
    33  		},
    34  	}
    35  	flagList := []string{
    36  		"blockpath",
    37  	}
    38  	attachFlags(joinCmd, flagList)
    39  
    40  	return joinCmd
    41  }
    42  
    43  //GBFileNotFoundErr genesis block file not found
    44  type GBFileNotFoundErr string
    45  
    46  func (e GBFileNotFoundErr) Error() string {
    47  	return fmt.Sprintf("genesis block file not found %s", string(e))
    48  }
    49  
    50  //ProposalFailedErr proposal failed
    51  type ProposalFailedErr string
    52  
    53  func (e ProposalFailedErr) Error() string {
    54  	return fmt.Sprintf("proposal failed (err: %s)", string(e))
    55  }
    56  
    57  func getJoinCCSpec() (*pb.ChaincodeSpec, error) {
    58  	if genesisBlockPath == common.UndefinedParamValue {
    59  		return nil, errors.New("Must supply genesis block file")
    60  	}
    61  
    62  	gb, err := ioutil.ReadFile(genesisBlockPath)
    63  	if err != nil {
    64  		return nil, GBFileNotFoundErr(err.Error())
    65  	}
    66  	// Build the spec
    67  	input := &pb.ChaincodeInput{Args: [][]byte{[]byte(cscc.JoinChain), gb}}
    68  
    69  	spec := &pb.ChaincodeSpec{
    70  		Type:        pb.ChaincodeSpec_Type(pb.ChaincodeSpec_Type_value["GOLANG"]),
    71  		ChaincodeId: &pb.ChaincodeID{Name: "cscc"},
    72  		Input:       input,
    73  	}
    74  
    75  	return spec, nil
    76  }
    77  
    78  func executeJoin(cf *ChannelCmdFactory) (err error) {
    79  	spec, err := getJoinCCSpec()
    80  	if err != nil {
    81  		return err
    82  	}
    83  
    84  	// Build the ChaincodeInvocationSpec message
    85  	invocation := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}
    86  
    87  	creator, err := cf.Signer.Serialize()
    88  	if err != nil {
    89  		return fmt.Errorf("Error serializing identity for %s: %s", cf.Signer.GetIdentifier(), err)
    90  	}
    91  
    92  	var prop *pb.Proposal
    93  	prop, _, err = protoutil.CreateProposalFromCIS(pcommon.HeaderType_CONFIG, "", invocation, creator)
    94  	if err != nil {
    95  		return fmt.Errorf("Error creating proposal for join %s", err)
    96  	}
    97  
    98  	var signedProp *pb.SignedProposal
    99  	signedProp, err = protoutil.GetSignedProposal(prop, cf.Signer)
   100  	if err != nil {
   101  		return fmt.Errorf("Error creating signed proposal %s", err)
   102  	}
   103  
   104  	var proposalResp *pb.ProposalResponse
   105  	proposalResp, err = cf.EndorserClient.ProcessProposal(context.Background(), signedProp)
   106  	if err != nil {
   107  		return ProposalFailedErr(err.Error())
   108  	}
   109  
   110  	if proposalResp == nil {
   111  		return ProposalFailedErr("nil proposal response")
   112  	}
   113  
   114  	if proposalResp.Response.Status != 0 && proposalResp.Response.Status != 200 {
   115  		return ProposalFailedErr(fmt.Sprintf("bad proposal response %d: %s", proposalResp.Response.Status, proposalResp.Response.Message))
   116  	}
   117  	logger.Info("Successfully submitted proposal to join channel")
   118  	return nil
   119  }
   120  
   121  func join(cmd *cobra.Command, args []string, cf *ChannelCmdFactory) error {
   122  	if genesisBlockPath == common.UndefinedParamValue {
   123  		return errors.New("Must supply genesis block path")
   124  	}
   125  	// Parsing of the command line is done so silence cmd usage
   126  	cmd.SilenceUsage = true
   127  
   128  	var err error
   129  	if cf == nil {
   130  		cf, err = InitCmdFactory(EndorserRequired, PeerDeliverNotRequired, OrdererNotRequired)
   131  		if err != nil {
   132  			return err
   133  		}
   134  	}
   135  	return executeJoin(cf)
   136  }