feat: add validate-config command

.golangci.yml

@@ -47,3 +47,4 @@ linters:
  - depguard
  - goimports
  - nosnakecase
+ - mnd

cmd/grafana-interacter.go

@@ -10,25 +10,48 @@ import (
 
 var version = "unknown"
 
-func Execute(configPath string) {
+func ExecuteMain(configPath string) {
  if configPath == "" {
  logger.GetDefaultLogger().Fatal().Msg("Cannot start without config")
  }
 
  config := pkg.LoadConfig(configPath)
+ if err := config.Validate(); err != nil {
+ logger.GetDefaultLogger().Fatal().Err(err).Msg("Error validating config")
+ }
+
  newApp := app.NewApp(config, version)
  newApp.Start()
 }
 
+func ExecuteValidateConfig(configPath string) {
+ config := pkg.LoadConfig(configPath)
+
+ if err := config.Validate(); err != nil {
+ logger.GetDefaultLogger().Fatal().Err(err).Msg("Error validating config")
+ }
+
+ logger.GetDefaultLogger().Info().Msg("Provided config is valid.")
+}
+
 func main() {
  var configPath string
 
  rootCmd := &cobra.Command{
- Use: "grafana-interacter",
+ Use: "grafana-interacter --config [config path]",
  Long: "A Telegram bot to interact with your Grafana, Prometheus and Alertmanager instances.",
  Version: version,
  Run: func(cmd *cobra.Command, args []string) {
- Execute(configPath)
+ ExecuteMain(configPath)
+ },
+ }
+
+ validateConfigCmd := &cobra.Command{
+ Use: "validate-config --config [config path]",
+ Long: "Validate config.",
+ Version: version,
+ Run: func(cmd *cobra.Command, args []string) {
+ ExecuteValidateConfig(configPath)
  },
  }
 
@@ -37,6 +60,13 @@ func main() {
  logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not set flag as required")
  }
 
+ validateConfigCmd.PersistentFlags().StringVar(&configPath, "config", "", "Config file path")
+ if err := validateConfigCmd.MarkPersistentFlagRequired("config"); err != nil {
+ logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not set flag as required")
+ }
+
+ rootCmd.AddCommand(validateConfigCmd)
+
  if err := rootCmd.Execute(); err != nil {
  logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not start application")
  }

pkg/load_config.go

@@ -26,9 +26,5 @@ func LoadConfig(path string) *configPkg.Config {
  logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not set default settings")
  }
 
- if err := config.Validate(); err != nil {
- logger.GetDefaultLogger().Fatal().Err(err).Msg("Error validating config")
- }
-
  return config
 }