github.com/tenywen/fabric@v1.0.0-beta.0.20170620030522-a5b1ed380643/orderer/sample_clients/broadcast_config/client.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 main
    18  
    19  import (
    20  	"context"
    21  	"flag"
    22  	"fmt"
    23  
    24  	"google.golang.org/grpc"
    25  
    26  	genesisconfig "github.com/hyperledger/fabric/common/configtx/tool/localconfig"
    27  	"github.com/hyperledger/fabric/msp"
    28  	mspmgmt "github.com/hyperledger/fabric/msp/mgmt"
    29  	"github.com/hyperledger/fabric/orderer/localconfig"
    30  	cb "github.com/hyperledger/fabric/protos/common"
    31  	ab "github.com/hyperledger/fabric/protos/orderer"
    32  )
    33  
    34  var conf *config.TopLevel
    35  var genConf *genesisconfig.Profile
    36  var signer msp.SigningIdentity
    37  
    38  type broadcastClient struct {
    39  	ab.AtomicBroadcast_BroadcastClient
    40  }
    41  
    42  func (bc *broadcastClient) broadcast(env *cb.Envelope) error {
    43  	var err error
    44  	var resp *ab.BroadcastResponse
    45  
    46  	err = bc.Send(env)
    47  	if err != nil {
    48  		return err
    49  	}
    50  
    51  	resp, err = bc.Recv()
    52  	if err != nil {
    53  		return err
    54  	}
    55  
    56  	fmt.Println("Status:", resp)
    57  	return nil
    58  }
    59  
    60  // cmdImpl holds the command and its arguments.
    61  type cmdImpl struct {
    62  	name string
    63  	args argsImpl
    64  }
    65  
    66  // argsImpl holds all the possible arguments for all possible commands.
    67  type argsImpl struct {
    68  	consensusType  string
    69  	creationPolicy string
    70  	chainID        string
    71  }
    72  
    73  func init() {
    74  	conf = config.Load()
    75  	genConf = genesisconfig.Load(genesisconfig.SampleInsecureProfile)
    76  
    77  	// Load local MSP
    78  	err := mspmgmt.LoadLocalMsp(conf.General.LocalMSPDir, conf.General.BCCSP, conf.General.LocalMSPID)
    79  	if err != nil {
    80  		panic(fmt.Errorf("Failed to initialize local MSP: %s", err))
    81  	}
    82  
    83  	msp := mspmgmt.GetLocalMSP()
    84  	signer, err = msp.GetDefaultSigningIdentity()
    85  	if err != nil {
    86  		panic(fmt.Errorf("Failed to initialize get default signer: %s", err))
    87  	}
    88  }
    89  
    90  func main() {
    91  	cmd := new(cmdImpl)
    92  	var srv string
    93  
    94  	flag.StringVar(&srv, "server", fmt.Sprintf("%s:%d", conf.General.ListenAddress, conf.General.ListenPort), "The RPC server to connect to.")
    95  	flag.StringVar(&cmd.name, "cmd", "newChain", "The action that this client is requesting via the config transaction.")
    96  	flag.StringVar(&cmd.args.consensusType, "consensusType", genConf.Orderer.OrdererType, "In case of a newChain command, the type of consensus the ordering service is running on.")
    97  	flag.StringVar(&cmd.args.creationPolicy, "creationPolicy", "AcceptAllPolicy", "In case of a newChain command, the chain creation policy this request should be validated against.")
    98  	flag.StringVar(&cmd.args.chainID, "chainID", "NewChannelId", "In case of a newChain command, the chain ID to create.")
    99  	flag.Parse()
   100  
   101  	conn, err := grpc.Dial(srv, grpc.WithInsecure())
   102  	defer func() {
   103  		_ = conn.Close()
   104  	}()
   105  	if err != nil {
   106  		fmt.Println("Error connecting:", err)
   107  		return
   108  	}
   109  
   110  	client, err := ab.NewAtomicBroadcastClient(conn).Broadcast(context.TODO())
   111  	if err != nil {
   112  		fmt.Println("Error connecting:", err)
   113  		return
   114  	}
   115  
   116  	bc := &broadcastClient{client}
   117  
   118  	switch cmd.name {
   119  	case "newChain":
   120  		env := newChainRequest(cmd.args.consensusType, cmd.args.creationPolicy, cmd.args.chainID)
   121  		fmt.Println("Requesting the creation of chain", cmd.args.chainID)
   122  		fmt.Println(bc.broadcast(env))
   123  	default:
   124  		panic("Invalid command given")
   125  	}
   126  }