github.com/cosmos/cosmos-sdk@v0.50.10/x/genutil/client/cli/validate_genesis.go (about)

     1  package cli
     2  
     3  import (
     4  	"encoding/json"
     5  	"errors"
     6  	"fmt"
     7  	"io"
     8  	"strings"
     9  
    10  	"github.com/spf13/cobra"
    11  
    12  	"github.com/cosmos/cosmos-sdk/client"
    13  	"github.com/cosmos/cosmos-sdk/server"
    14  	"github.com/cosmos/cosmos-sdk/types/module"
    15  	"github.com/cosmos/cosmos-sdk/x/genutil/types"
    16  )
    17  
    18  const chainUpgradeGuide = "https://github.com/cosmos/cosmos-sdk/blob/main/UPGRADING.md"
    19  
    20  // ValidateGenesisCmd takes a genesis file, and makes sure that it is valid.
    21  func ValidateGenesisCmd(mbm module.BasicManager) *cobra.Command {
    22  	return &cobra.Command{
    23  		Use:     "validate [file]",
    24  		Aliases: []string{"validate-genesis"},
    25  		Args:    cobra.RangeArgs(0, 1),
    26  		Short:   "Validates the genesis file at the default location or at the location passed as an arg",
    27  		RunE: func(cmd *cobra.Command, args []string) (err error) {
    28  			serverCtx := server.GetServerContextFromCmd(cmd)
    29  			clientCtx := client.GetClientContextFromCmd(cmd)
    30  
    31  			cdc := clientCtx.Codec
    32  
    33  			// Load default if passed no args, otherwise load passed file
    34  			var genesis string
    35  			if len(args) == 0 {
    36  				genesis = serverCtx.Config.GenesisFile()
    37  			} else {
    38  				genesis = args[0]
    39  			}
    40  
    41  			appGenesis, err := types.AppGenesisFromFile(genesis)
    42  			if err != nil {
    43  				return enrichUnmarshalError(err)
    44  			}
    45  
    46  			if err := appGenesis.ValidateAndComplete(); err != nil {
    47  				return fmt.Errorf("make sure that you have correctly migrated all CometBFT consensus params. Refer the UPGRADING.md (%s): %w", chainUpgradeGuide, err)
    48  			}
    49  
    50  			var genState map[string]json.RawMessage
    51  			if err := json.Unmarshal(appGenesis.AppState, &genState); err != nil {
    52  				if strings.Contains(err.Error(), "unexpected end of JSON input") {
    53  					return fmt.Errorf("app_state is missing in the genesis file: %s", err.Error())
    54  				}
    55  				return fmt.Errorf("error unmarshalling genesis doc %s: %w", genesis, err)
    56  			}
    57  
    58  			if err = mbm.ValidateGenesis(cdc, clientCtx.TxConfig, genState); err != nil {
    59  				errStr := fmt.Sprintf("error validating genesis file %s: %s", genesis, err.Error())
    60  				if errors.Is(err, io.EOF) {
    61  					errStr = fmt.Sprintf("%s: section is missing in the app_state", errStr)
    62  				}
    63  				return fmt.Errorf("%s", errStr)
    64  			}
    65  
    66  			fmt.Fprintf(cmd.OutOrStdout(), "File at %s is a valid genesis file\n", genesis)
    67  			return nil
    68  		},
    69  	}
    70  }
    71  
    72  func enrichUnmarshalError(err error) error {
    73  	var syntaxErr *json.SyntaxError
    74  	if errors.As(err, &syntaxErr) {
    75  		return fmt.Errorf("error at offset %d: %s", syntaxErr.Offset, syntaxErr.Error())
    76  	}
    77  	return err
    78  }