I have a project with next structure:
|_main.go
|_config
|_config.go
|_config_test.go
|_config.json
I'm having next code line in config.go
:
file, _ := os.Open("config/config.json")
When I'm executing method contained this code line from main.go
all is working. But when I'm trying to execute this method from config_test.go
it produces error:
open config/config.json: no such file or directory
As I understood it is a working directory issue because I'm launching same code with relative path from different directories. How can I fix this problem without using full path in config.go
?
Relative paths are always resolved basis your current directory. Hence it's better to avoid relative paths.
Use command line flags or a configuration management tool (better approach) like Viper
Also according to The Twelve-Factor App your config files should be outside your project.
Eg usage with Viper:
import "github.com/spf13/viper"
func init() {
viper.SetConfigName("config")
// Config files are stored here; multiple locations can be added
viper.AddConfigPath("$HOME/configs")
errViper := viper.ReadInConfig()
if errViper != nil {
panic(errViper)
}
// Get values from config.json
val := viper.GetString("some_key")
// Use the value
}
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