nsq初始化读取config函数

痛定思痛。 2023-02-26 08:23 34阅读 0赞

var cfg config
    	configFile := flagSet.Lookup("config").Value.String()//config的值是toml文件的地址。
    	if configFile != "" {
        
    		_, err := toml.DecodeFile(configFile, &cfg)//将toml文件中配置decode成元数据
    		if err != nil {
        
    			logFatal("failed to load config file %s - %s", configFile, err)
    		}
    	}
    	cfg.Validate()//就check两个值一个是tls_required 一个是tls_min_version
    
    	options.Resolve(opts, flagSet, cfg)

type config map[string]interface{
        }
    func DecodeFile(fpath string, v interface{
        }) (MetaData, error) {
        
    	bs, err := ioutil.ReadFile(fpath)
    	if err != nil {
        
    		return MetaData{
        }, err
    	}
    	return Decode(string(bs), v)
    }
    func (cfg config) Validate() {
        //tls transport layer security
    	// special validation/translation
    	if v, exists := cfg["tls_required"]; exists {
        
    		var t tlsRequiredOption
    		err := t.Set(fmt.Sprintf("%v", v))
    		if err == nil {
        
    			cfg["tls_required"] = t.String()
    		} else {
        
    			logFatal("failed parsing tls_required %+v", v)
    		}
    	}
    	if v, exists := cfg["tls_min_version"]; exists {
        
    		var t tlsMinVersionOption
    		err := t.Set(fmt.Sprintf("%v", v))
    		if err == nil {
        
    			newVal := fmt.Sprintf("%v", t.Get())
    			if newVal != "0" {
        
    				cfg["tls_min_version"] = newVal
    			} else {
        
    				delete(cfg, "tls_min_version")
    			}
    		} else {
        
    			logFatal("failed parsing tls_min_version %+v", v)
    		}
    	}
    }

\#\#\#toml文件介绍  
TOML 的目标是成为一个极简的配置文件格式.TOML 被设计成可以无歧义地被映射为哈希表，从而被多种语言解析

[owner]
    name = "Tom Preston-Werner"
    organization = "Github"
    bio = "Github Cofounder & CEO\nLikes tater tots and beer."
    dob = 1979-05-27T07:32:00Z # 日期时间是一等公民.为什么不呢？
    
    [database]
    server = "192.168.1.1"
    ports = [ 8001, 8001, 8002 ]
    connection_max = 5000
    enabled = true
    
    [servers]
    
      # 你可以依照你的意愿缩进.使用空格或Tab.TOML不会在意.
      [servers.alpha]
      ip = "10.0.0.1"
    
      dc = "eqdc10"
    
      [servers.beta]
      ip = "10.0.0.2"
      dc = "eqdc10"
    
    [clients]
    data = [ ["gamma", "delta"], [1, 2] ]

具体细节参考[地址][Link 1]

[Link 1]: https://mojotv.cn/2018/12/26/what-is-toml