Method new

chapter 5/config.rs:20–32

()

impl Config {
    pub fn new() -> Config {
        
        let mut node_addr = String::from(DEFAULT_NODE_ADDR);
        if let Ok(addr) = env::var("NODE_ADDRESS") {
            node_addr = addr;
        }
        let mut map = HashMap::new();
        map.insert(String::from(NODE_ADDRESS_KEY), node_addr);

        Config {
            inner: RwLock::new(map),
        }
    }

    
    pub fn get_node_addr(&self) -> String {