func getConfig(flagset *flag.FlagSet, file string) (*config.Config, error) {
if _, err := os.Stat(file); err != nil {
glog.Infof("Config file %s does not appear to exist - ignoring")
file = ""
}
opts := globalconf.Options{
EnvPrefix: "FLEET_",
ConfigFile: file,
}
gconf, err := globalconf.NewWithOptions(opts)
if err != nil {
return nil, err
}
gconf.ParseSet("", flagset)
cfg := config.NewConfig()
cfg.Verbosity = (*flagset.Lookup("verbosity")).Value.(flag.Getter).Get().(int)
cfg.EtcdServers = (*flagset.Lookup("etcd_servers")).Value.(flag.Getter).Get().(stringSlice)
cfg.BootId = (*flagset.Lookup("boot_id")).Value.(flag.Getter).Get().(string)
cfg.PublicIP = (*flagset.Lookup("public_ip")).Value.(flag.Getter).Get().(string)
cfg.RawMetadata = (*flagset.Lookup("metadata")).Value.(flag.Getter).Get().(string)
cfg.UnitPrefix = (*flagset.Lookup("unit_prefix")).Value.(flag.Getter).Get().(string)
cfg.AgentTTL = (*flagset.Lookup("agent_ttl")).Value.(flag.Getter).Get().(string)
return cfg, nil
}
func loadConfigFromPath(cp string) (*config.Config, error) {
cfg := config.NewConfig()
if cp != "" {
cfgFile, err := os.Open(cp)
if err != nil {
msg := fmt.Sprintf("Unable to open config file at %s: %s", cp, err)
return nil, errors.New(msg)
}
err = config.UpdateConfigFromFile(cfg, cfgFile)
if err != nil {
msg := fmt.Sprintf("Failed to parse config file at %s: %s", cp, err)
return nil, errors.New(msg)
}
}
config.UpdateFlagsFromConfig(cfg)
return cfg, nil
}