go-configor配置文件支持热加载

àì夳堔傛蜴生んèń 2023-06-22 14:54 10阅读 0赞

在编写go程序的时候我们加载配置有多中方式，比较常用的还是配置文件。我们需要配置文件能够热加载（当配置发生变化后）不用重新启动程序，就能够使配置生效。

我们采用的是开源的配置文件方式 [https://github.com/jinzhu/configor][https_github.com_jinzhu_configor]

好，下面上货。

package config
    
    import (
       "fmt"
       "github.com/jinzhu/configor"
       "time"
    )
    
    func init() {
       configFileName := "config.yml"
       //reload模式
       configor.New(&configor.Config{
          AutoReload:         true,
          AutoReloadInterval: time.Second,
          AutoReloadCallback: func(config interface{}) {
             //config变化后触发
             fmt.Printf("%v changed \r\n", config)
          },
       }).Load(&Config, configFileName)
       //无reload模式
       //configor.Load(&Config, configFileName)
       fmt.Printf("config: %#v\r\n", Config)
    }
    
    //配置类
    var Config = struct {
       APPName string `default:"app name"`
    
       DB struct {
          Name     string
          User     string `default:"root"`
          Password string `required:"true" env:"DBPassword"`
          Port     uint   `default:"3306"`
       }
    
       Contacts []struct {
          Name  string
          Email string `required:"true"`
       }
    }{}

在main函数中读取

package main
    
    import (
       "fmt"
       "selfcommon/src/common/config"
       "time"
    )
    
    func main() {
       fmt.Println(config.Config.APPName)
       time.Sleep(time.Duration(6) * time.Second)
       fmt.Println(config.Config.APPName)
    }

配置文件

appname: common
    
    db:
      name:     test
      user:     root
      password: 123456
      port:     3306
    
    contacts:
      - name: i test
        email: test@test.com
      - name: i test2
        email: test2@test.com

在运行期间我们修改配置文件

config: struct { APPName string "default:\"app name\""; DB struct { Name string; User string "default:\"root\""; Password string "required:\"true\" env:\"DBPassword\""; Port uint "default:\"3306\"" }; Contacts []struct { Name string; Email string "required:\"true\"" } }{APPName:"test", DB:struct { Name string; User string "default:\"root\""; Password string "required:\"true\" env:\"DBPassword\""; Port uint "default:\"3306\"" }{Name:"test", User:"root", Password:"123456", Port:0xcea}, Contacts:[]struct { Name string; Email string "required:\"true\"" }{struct { Name string; Email string "required:\"true\"" }{Name:"i test", Email:"test@test.com"}, struct { Name string; Email string "required:\"true\"" }{Name:"i test2", Email:"test2@test.com"}}}
    test
    &{testa {test root 123456 3306} [{i test test@test.com} {i test2 test2@test.com}]} changed 
    testa

[https_github.com_jinzhu_configor]: https://github.com/jinzhu/configor