// MergeConfigOverrides merges current config with overrides loaded from other sources
func MergeConfigOverrides(config *confer.Config, configParts map[string]interface{}) error {
keys := make([]string, len(configParts))
i := 0
for key := range configParts {
keys[i] = key
i++
}
sort.Strings(keys)
for _, key := range keys {
log.Printf("Merging overrides from key %s...", key)
err := config.MergeAttributes(configParts[key])
if err != nil {
return fmt.Errorf("unable to merge data for key %s (data %#v): %s", key, configParts[key], err)
}
}
return nil
}
// NewConsulFromConfig initializes Consul client based on config + environment overrides
func NewConsulFromConfig(config *confer.Config, configPrefix string) (client *api.Client, consulPrefix string, err error) {
upperPrefix := strings.ToUpper(configPrefix)
config.BindEnv(upperPrefix+"_ENABLED", configPrefix+".enabled")
config.BindEnv(upperPrefix+"_SCHEME", configPrefix+".scheme")
config.BindEnv(upperPrefix+"_ADDRESS", configPrefix+".address")
config.BindEnv(upperPrefix+"_PREFIX", configPrefix+".prefix")
config.BindEnv(upperPrefix+"_TOKEN", configPrefix+".token")
if !config.GetBool(configPrefix + ".enabled") {
// Consul is disabled
return
}
conf := api.DefaultConfig()
conf.Scheme = config.GetString(configPrefix + ".scheme")
conf.Address = config.GetString(configPrefix + ".address")
conf.Token = config.GetString(configPrefix + ".token")
consulPrefix = config.GetString(configPrefix + ".prefix")
client, err = api.NewClient(conf)
return
}