vault.rs

    let keystore = if args.is_present("vault") {
        match KeyStore::load_from_vault() {
            Ok(keystore) => keystore,
            Err(err) => {
                error!("Unable to load keyfile: {}", err);
                return;
            }
        }
    } else {
        let args_keyfile = args.value_of("keyfile")
            .expect("internal error.  keyfile not specified");
        match KeyStore::load_from_path(args_keyfile) {
            Ok(keystore) => keystore,
            Err(err) => {
                error!("Unable to load keyfile: {}", err);
                return;
            }
        }
    };