Golang配置管理Viper的实现

viperConfig.SetConfigName("config")
viperConfig.SetConfigType("yaml")
viperConfig.AddConfigPath("/etc/appname/")  
err := viperConfig.ReadInConfig() 
if err != nil {
    panic(fmt.Errorf("Fatal error config file: %w \n", err))
}

redis:
    user:admin                
    password: 123456          
    host: 127.0.0.1
    port: 6379               
    database: 0  

Get(key string) : interface{}
GetBool(key string) : bool
GetFloat64(key string) : float64
GetInt(key string) : int
GetIntSlice(key string) : []int
GetString(key string) : string
GetStringMap(key string) : map[string]interface{}
GetStringMapString(key string) : map[string]string
GetStringSlice(key string) : []string
GetTime(key string) : time.Time
GetDuration(key string) : time.Duration
IsSet(key string) : bool
AllSettings() : map[string]interface{}

GetString("redis.user")

viper.Unmarshal(&ConfigSetting)
viper.UnmarshalKey("redis", &param.RedisConfig)

viper.SetConfigType("yaml") 

// 你的程序需要的任何配置，如下
var yamlDemo = []byte(`
name: zhangsan
age:18
`)

viper.ReadConfig(bytes.NewBuffer(yamlDemo))

viper.Get("name") //获取到的值是zhangsan

viper.WatchConfig()
viper.OnConfigChange(func(e fsnotify.Event) {
  // 配置文件发生变更之后会调用的回调函数
    fmt.Println("Config file changed:", e.Name)
})

import _ "github.com/spf13/viper/remote"

viper.AddSecureRemoteProvider("etcd",
        "https://127.0.0.1:2379",
        "conf.yaml",
        "key_path")
viper.SetConfigType("yaml")
err := viper.ReadRemoteConfig()
viper.Unmarshal(&remoteConfig)
if err != nil {
    panic(err)