github.com/kchristidis/fabric@v1.0.4-0.20171028114726-837acd08cde1/peer/chaincode/instantiate.go (about)

     1  /*
     2  Copyright IBM Corp. 2016 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 chaincode
    18  
    19  import (
    20  	"fmt"
    21  
    22  	protcommon "github.com/hyperledger/fabric/protos/common"
    23  	pb "github.com/hyperledger/fabric/protos/peer"
    24  	"github.com/hyperledger/fabric/protos/utils"
    25  	"github.com/spf13/cobra"
    26  	"golang.org/x/net/context"
    27  )
    28  
    29  var chaincodeInstantiateCmd *cobra.Command
    30  
    31  const instantiateCmdName = "instantiate"
    32  
    33  const instantiateDesc = "Deploy the specified chaincode to the network."
    34  
    35  // instantiateCmd returns the cobra command for Chaincode Deploy
    36  func instantiateCmd(cf *ChaincodeCmdFactory) *cobra.Command {
    37  	chaincodeInstantiateCmd = &cobra.Command{
    38  		Use:       instantiateCmdName,
    39  		Short:     fmt.Sprint(instantiateDesc),
    40  		Long:      fmt.Sprint(instantiateDesc),
    41  		ValidArgs: []string{"1"},
    42  		RunE: func(cmd *cobra.Command, args []string) error {
    43  			return chaincodeDeploy(cmd, args, cf)
    44  		},
    45  	}
    46  	flagList := []string{
    47  		"lang",
    48  		"ctor",
    49  		"name",
    50  		"channelID",
    51  		"version",
    52  		"policy",
    53  		"escc",
    54  		"vscc",
    55  	}
    56  	attachFlags(chaincodeInstantiateCmd, flagList)
    57  
    58  	return chaincodeInstantiateCmd
    59  }
    60  
    61  //instantiate the command via Endorser
    62  func instantiate(cmd *cobra.Command, cf *ChaincodeCmdFactory) (*protcommon.Envelope, error) {
    63  	spec, err := getChaincodeSpec(cmd)
    64  	if err != nil {
    65  		return nil, err
    66  	}
    67  
    68  	cds, err := getChaincodeDeploymentSpec(spec, false)
    69  	if err != nil {
    70  		return nil, fmt.Errorf("Error getting chaincode code %s: %s", chainFuncName, err)
    71  	}
    72  
    73  	creator, err := cf.Signer.Serialize()
    74  	if err != nil {
    75  		return nil, fmt.Errorf("Error serializing identity for %s: %s", cf.Signer.GetIdentifier(), err)
    76  	}
    77  
    78  	prop, _, err := utils.CreateDeployProposalFromCDS(chainID, cds, creator, policyMarhsalled, []byte(escc), []byte(vscc))
    79  	if err != nil {
    80  		return nil, fmt.Errorf("Error creating proposal  %s: %s", chainFuncName, err)
    81  	}
    82  
    83  	var signedProp *pb.SignedProposal
    84  	signedProp, err = utils.GetSignedProposal(prop, cf.Signer)
    85  	if err != nil {
    86  		return nil, fmt.Errorf("Error creating signed proposal  %s: %s", chainFuncName, err)
    87  	}
    88  
    89  	proposalResponse, err := cf.EndorserClient.ProcessProposal(context.Background(), signedProp)
    90  	if err != nil {
    91  		return nil, fmt.Errorf("Error endorsing %s: %s", chainFuncName, err)
    92  	}
    93  
    94  	if proposalResponse != nil {
    95  		// assemble a signed transaction (it's an Envelope message)
    96  		env, err := utils.CreateSignedTx(prop, cf.Signer, proposalResponse)
    97  		if err != nil {
    98  			return nil, fmt.Errorf("Could not assemble transaction, err %s", err)
    99  		}
   100  
   101  		return env, nil
   102  	}
   103  
   104  	return nil, nil
   105  }
   106  
   107  // chaincodeDeploy instantiates the chaincode. On success, the chaincode name
   108  // (hash) is printed to STDOUT for use by subsequent chaincode-related CLI
   109  // commands.
   110  func chaincodeDeploy(cmd *cobra.Command, args []string, cf *ChaincodeCmdFactory) error {
   111  	var err error
   112  	if cf == nil {
   113  		cf, err = InitCmdFactory(true, true)
   114  		if err != nil {
   115  			return err
   116  		}
   117  	}
   118  	defer cf.BroadcastClient.Close()
   119  	env, err := instantiate(cmd, cf)
   120  	if err != nil {
   121  		return err
   122  	}
   123  
   124  	if env != nil {
   125  		err = cf.BroadcastClient.Send(env)
   126  	}
   127  
   128  	return err
   129  }