github.com/adnan-c/fabric_e2e_couchdb@v0.6.1-preview.0.20170228180935-21ce6b23cf91/peer/channel/fetchconfig.go (about)

     1  /*
     2  Copyright IBM Corp. 2017 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 channel
    18  
    19  import (
    20  	"io/ioutil"
    21  
    22  	"github.com/golang/protobuf/proto"
    23  	cb "github.com/hyperledger/fabric/protos/common"
    24  	"github.com/spf13/cobra"
    25  )
    26  
    27  func fetchCmd(cf *ChannelCmdFactory) *cobra.Command {
    28  	createCmd := &cobra.Command{
    29  		Use:   "fetch",
    30  		Short: "Fetch configuration block.",
    31  		Long:  `Fetch configuration block.`,
    32  		RunE: func(cmd *cobra.Command, args []string) error {
    33  			return fetch(cmd, args, cf)
    34  		},
    35  	}
    36  
    37  	return createCmd
    38  }
    39  
    40  func fetch(cmd *cobra.Command, args []string, cf *ChannelCmdFactory) error {
    41  	var err error
    42  	if cf == nil {
    43  		cf, err = InitCmdFactory(false)
    44  		if err != nil {
    45  			return err
    46  		}
    47  	}
    48  
    49  	var block *cb.Block
    50  	if block, err = cf.DeliverClient.getBlock(); err != nil {
    51  		return err
    52  	}
    53  
    54  	b, err := proto.Marshal(block)
    55  	if err != nil {
    56  		return err
    57  	}
    58  
    59  	file := chainID + ".block"
    60  	if err = ioutil.WriteFile(file, b, 0644); err != nil {
    61  		return err
    62  	}
    63  
    64  	return nil
    65  }