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

     1  /*
     2  Copyright IBM Corp. All Rights Reserved.
     3  
     4  SPDX-License-Identifier: Apache-2.0
     5  */
     6  
     7  package chaincode
     8  
     9  import (
    10  	"errors"
    11  	"fmt"
    12  
    13  	"github.com/hyperledger/fabric/bccsp"
    14  	"github.com/spf13/cobra"
    15  )
    16  
    17  var chaincodeQueryCmd *cobra.Command
    18  
    19  // queryCmd returns the cobra command for Chaincode Query
    20  func queryCmd(cf *ChaincodeCmdFactory, cryptoProvider bccsp.BCCSP) *cobra.Command {
    21  	chaincodeQueryCmd = &cobra.Command{
    22  		Use:       "query",
    23  		Short:     fmt.Sprintf("Query using the specified %s.", chainFuncName),
    24  		Long:      fmt.Sprintf("Get endorsed result of %s function call and print it. It won't generate transaction.", chainFuncName),
    25  		ValidArgs: []string{"1"},
    26  		RunE: func(cmd *cobra.Command, args []string) error {
    27  			return chaincodeQuery(cmd, cf, cryptoProvider)
    28  		},
    29  	}
    30  	flagList := []string{
    31  		"ctor",
    32  		"name",
    33  		"channelID",
    34  		"peerAddresses",
    35  		"tlsRootCertFiles",
    36  		"connectionProfile",
    37  	}
    38  	attachFlags(chaincodeQueryCmd, flagList)
    39  
    40  	chaincodeQueryCmd.Flags().BoolVarP(&chaincodeQueryRaw, "raw", "r", false,
    41  		"If true, output the query value as raw bytes, otherwise format as a printable string")
    42  	chaincodeQueryCmd.Flags().BoolVarP(&chaincodeQueryHex, "hex", "x", false,
    43  		"If true, output the query value byte array in hexadecimal. Incompatible with --raw")
    44  
    45  	return chaincodeQueryCmd
    46  }
    47  
    48  func chaincodeQuery(cmd *cobra.Command, cf *ChaincodeCmdFactory, cryptoProvider bccsp.BCCSP) error {
    49  	if channelID == "" {
    50  		return errors.New("The required parameter 'channelID' is empty. Rerun the command with -C flag")
    51  	}
    52  	// Parsing of the command line is done so silence cmd usage
    53  	cmd.SilenceUsage = true
    54  
    55  	var err error
    56  	if cf == nil {
    57  		cf, err = InitCmdFactory(cmd.Name(), true, false, cryptoProvider)
    58  		if err != nil {
    59  			return err
    60  		}
    61  	}
    62  
    63  	return chaincodeInvokeOrQuery(cmd, false, cf)
    64  }