Why is my config file not found in the working directory?

[wsw70]

Apologies for the question, it is really basic but I am simply stuck.

I have my application .go file in the same directory as the configuration. Below is the initialization procedure that reads the configuration (and does something with it afterward, I did not get to that yet :))

func initializeClient() (client *ovh.Client) {
	var err error
	configFile := "dnssentinel.toml"

	// read config file
	path, err := os.Getwd()
	log.Info().Msgf("%v", path)
	files, err := ioutil.ReadDir(".")
	for _, f := range files {
		fmt.Println(f.Name())
	}
	viper.SetConfigName(configFile)
	viper.AddConfigPath(".")
	err = viper.ReadInConfig()
	if err != nil {
		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
			log.Fatal().Msgf("cannot find config file %v", configFile)
		} else {
			log.Fatal().Msgf("error parsing config file: %v", err)
		}
	}
	// check if all required entries are present
	for _, attr := range []string{"consumerKey", "applicationSecret", "applicationKey"} {
		if !(viper.IsSet(attr)) {
			log.Fatal().Msgf("%v required attribute for OVH is not present", attr)
		}
	}
	// build the client
	client, err = ovh.NewClient(
		"ovh-eu",
		viper.GetString("applicationKey"),
		viper.GetString("applicationSecret"),
		viper.GetString("consumerKey"),
	)
	if err != nil {
		log.Fatal().Msgf("cannot initialize OVH client: %v", err)
	}
	return client
}

This outputs

2022-05-26T15:51:08+02:00 |🛈 INFO  | logging set up
2022-05-26T15:51:08+02:00 |🛈 INFO  | D:\Nextcloud\dev-perso\dnssentinel     
.idea                                                                       
dnssentinel.go                                                              
dnssentinel.toml                                                            
go.mod                                                                      
go.sum                                                                      
helperOVH.go                                                                
2022-05-26T15:51:08+02:00 | FATAL | cannot find config file dnssentinel.toml

So:

• the working directory (".") is the right one
• the contents of "." are the right ones: the main file dnssentinel.go and suits configuration file dnssentinel.toml side by side
• reading dnssentinel.toml from the current directory fails

Any idea why?

[wsw70]

It looks like there is a mistake (or unclarity) in the docs.

I used viper.SetConfigFile(configFile) (configFile is my variable with the filename) and it worked. This is nowhere in the documentation AFAIK.

Th documentation mentions SetConfigName, and the comment on the next like make it look as if this was to be a complete filename.extension.

I will make a PR for the doc.