166 lines
3.3 KiB
Go
166 lines
3.3 KiB
Go
package client
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"strconv"
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toml "github.com/pelletier/go-toml"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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"github.com/cosmos/cosmos-sdk/client/flags"
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)
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const (
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flagGet = "get"
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)
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var configDefaults = map[string]string{
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"chain-id": "",
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"output": "text",
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"node": "tcp://localhost:26657",
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"broadcast-mode": "sync",
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}
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// ConfigCmd returns a CLI command to interactively create an application CLI
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// config file.
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func ConfigCmd(defaultCLIHome string) *cobra.Command {
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cmd := &cobra.Command{
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Use: "config <key> [value]",
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Short: "Create or query an application CLI configuration file",
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RunE: runConfigCmd,
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Args: cobra.RangeArgs(0, 2),
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}
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cmd.Flags().String(flags.FlagHome, defaultCLIHome,
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"set client's home directory for configuration")
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cmd.Flags().Bool(flagGet, false,
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"print configuration value or its default if unset")
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return cmd
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}
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func runConfigCmd(cmd *cobra.Command, args []string) error {
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cfgFile, err := ensureConfFile(viper.GetString(flags.FlagHome))
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if err != nil {
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return err
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}
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getAction := viper.GetBool(flagGet)
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if getAction && len(args) != 1 {
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return fmt.Errorf("wrong number of arguments")
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}
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// load configuration
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tree, err := loadConfigFile(cfgFile)
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if err != nil {
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return err
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}
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// print the config and exit
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if len(args) == 0 {
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s, err := tree.ToTomlString()
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if err != nil {
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return err
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}
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fmt.Print(s)
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return nil
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}
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key := args[0]
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// get config value for a given key
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if getAction {
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switch key {
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case "trace", "trust-node", "indent":
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fmt.Println(tree.GetDefault(key, false).(bool))
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default:
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if defaultValue, ok := configDefaults[key]; ok {
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fmt.Println(tree.GetDefault(key, defaultValue).(string))
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return nil
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}
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return errUnknownConfigKey(key)
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}
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return nil
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}
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if len(args) != 2 {
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return fmt.Errorf("wrong number of arguments")
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}
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value := args[1]
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// set config value for a given key
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switch key {
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case "chain-id", "output", "node", "broadcast-mode":
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tree.Set(key, value)
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case "trace", "trust-node", "indent":
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boolVal, err := strconv.ParseBool(value)
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if err != nil {
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return err
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}
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tree.Set(key, boolVal)
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default:
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return errUnknownConfigKey(key)
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}
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// save configuration to disk
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if err := saveConfigFile(cfgFile, tree); err != nil {
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return err
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}
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fmt.Fprintf(os.Stderr, "configuration saved to %s\n", cfgFile)
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return nil
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}
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func ensureConfFile(rootDir string) (string, error) {
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cfgPath := path.Join(rootDir, "config")
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if err := os.MkdirAll(cfgPath, os.ModePerm); err != nil {
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return "", err
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}
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return path.Join(cfgPath, "config.toml"), nil
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}
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func loadConfigFile(cfgFile string) (*toml.Tree, error) {
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if _, err := os.Stat(cfgFile); os.IsNotExist(err) {
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fmt.Fprintf(os.Stderr, "%s does not exist\n", cfgFile)
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return toml.Load(``)
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}
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bz, err := ioutil.ReadFile(cfgFile)
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if err != nil {
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return nil, err
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}
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tree, err := toml.LoadBytes(bz)
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if err != nil {
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return nil, err
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}
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return tree, nil
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}
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func saveConfigFile(cfgFile string, tree *toml.Tree) error {
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fp, err := os.OpenFile(cfgFile, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
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if err != nil {
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return err
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}
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defer fp.Close()
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_, err = tree.WriteTo(fp)
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return err
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}
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func errUnknownConfigKey(key string) error {
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return fmt.Errorf("unknown configuration key: %q", key)
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}
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