20200213_choria_config_blog

confkey_set.go

c := &Config{}

// Initialize the struct with default values
err := confkey.SetStructDefaults(c)
panicIfErr(err)

// Next we have to set complex types - number, bool, slices etc - from strings as the data comes from the configuration file as text
// the conversions are all handled by the confkey package

// Set the value in the struct for whatever field matches the key loglevel
err = confkey.SetStructFieldWithKey(c, "loglevel", "error")
panicIfErr(err)

// automatically handles the split etc, can be overridden using environment variable SERVERS
err = confkey.SetStructFieldWithKey(c, "servers", "h1.example.net:4222, h2.example.net:4222")
panicIfErr(err)

// validate all the inputs matches validate rules, like the enum list
err = confkey.Validate(c)
panicIfErr(err)