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config.go
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config.go
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package client
import (
"fmt"
"os"
"path"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"github.com/tendermint/tendermint/libs/cli"
"github.com/cosmos/cosmos-sdk/client/flags"
ethermint "github.com/hardiksa/ethermint/types"
)
// InitConfig adds the chain-id, encoding and output flags to the persistent flag set.
func InitConfig(cmd *cobra.Command) error {
home, err := cmd.PersistentFlags().GetString(cli.HomeFlag)
if err != nil {
return err
}
configFile := path.Join(home, "config", "config.toml")
_, err = os.Stat(configFile)
if err != nil && !os.IsNotExist(err) {
// Immediately return if the error isn't related to the file not existing.
// See issue https://github.com/hardiksa/ethermint/issues/539
return err
}
if err == nil {
viper.SetConfigFile(configFile)
if err := viper.ReadInConfig(); err != nil {
return err
}
}
if err := viper.BindPFlag(flags.FlagChainID, cmd.PersistentFlags().Lookup(flags.FlagChainID)); err != nil {
return err
}
if err := viper.BindPFlag(cli.EncodingFlag, cmd.PersistentFlags().Lookup(cli.EncodingFlag)); err != nil {
return err
}
return viper.BindPFlag(cli.OutputFlag, cmd.PersistentFlags().Lookup(cli.OutputFlag))
}
// ValidateChainID wraps a cobra command with a RunE function with base 10 integer chain-id verification.
func ValidateChainID(baseCmd *cobra.Command) *cobra.Command {
// Copy base run command to be used after chain verification
baseRunE := baseCmd.RunE
// Function to replace command's RunE function
validateFn := func(cmd *cobra.Command, args []string) error {
chainID, _ := cmd.Flags().GetString(flags.FlagChainID)
if !ethermint.IsValidChainID(chainID) {
return fmt.Errorf("invalid chain-id format: %s", chainID)
}
return baseRunE(cmd, args)
}
baseCmd.RunE = validateFn
return baseCmd
}