Deleting array elements from the configuration file will not reduce

[lizt666888]

Preflight Checklist

• I have searched the issue tracker for an issue that matches the one I want to file, without success.
• I am not looking for support or already pursued the available support channels without success.
• I have checked the troubleshooting guide for my problem, without success.

Viper Version

1.19

Go Version

1.21

Config Source

Files

Format

YAML, TOML

Repl.it link

No response

Code reproducing the issue

func Viper(path ...string) *viper.Viper {
var config string


if len(path) == 0 {
flag.StringVar(&config, "c", "", "choose config file.")
flag.Parse()
if config == "" { // 判断命令行参数是否为空
if configEnv := os.Getenv(internal.ConfigEnv); configEnv == "" { // 判断 internal.ConfigEnv 常量存储的环境变量是否为空
switch gin.Mode() {
case gin.DebugMode:
config = internal.ConfigDefaultFile
fmt.Printf("您正在使用gin模式的%s环境名称,config的路径为%s\n", gin.EnvGinMode, internal.ConfigDefaultFile)
case gin.ReleaseMode:
config = internal.ConfigReleaseFile
fmt.Printf("您正在使用gin模式的%s环境名称,config的路径为%s\n", gin.EnvGinMode, internal.ConfigReleaseFile)
case gin.TestMode:
config = internal.ConfigTestFile
fmt.Printf("您正在使用gin模式的%s环境名称,config的路径为%s\n", gin.EnvGinMode, internal.ConfigTestFile)
}
} else { // internal.ConfigEnv 常量存储的环境变量不为空 将值赋值于config
config = configEnv
fmt.Printf("您正在使用%s环境变量,config的路径为%s\n", internal.ConfigEnv, config)
}
} else { // 命令行参数不为空 将值赋值于config
fmt.Printf("您正在使用命令行的-c参数传递的值,config的路径为%s\n", config)
}
} else { // 函数传递的可变参数的第一个值赋值于config
config = path[0]
fmt.Printf("您正在使用func Viper()传递的值,config的路径为%s\n", config)
}


v := viper.New()
v.SetConfigFile(config)
v.SetConfigType("yaml")
err := v.ReadInConfig()
if err != nil {
panic(fmt.Errorf("Fatal error config file: %s \n", err))
}
v.WatchConfig()


v.OnConfigChange(func(e fsnotify.Event) {
fmt.Println("config file changed:", e.Name)
if err = v.Unmarshal(&global.VUA_CONFIG); err != nil {
fmt.Println(err)
}
})
if err = v.Unmarshal(&global.VUA_CONFIG); err != nil {
fmt.Println(err)
}
return v
}

Expected Behavior

map is

config.yaml
share_disk:

• area: 4061
  addr: 10.74.67.4

Actual Behavior

config.yaml
share_disk:

• area: 4061
  addr: 10.74.67.4
• area: 4062
  addr: 10.74.67.5

Steps To Reproduce

step：
1、config.yaml
share_disk:

• area: 4061
  addr: 10.74.67.4
• area: 4062
  addr: 10.74.67.5

2、The configuration read out is ：
share_disk:

• area: 4061
  addr: 10.74.67.4
• area: 4062
  addr: 10.74.67.5

3、Then modify the configuration file to
config.yaml
share_disk:

• area: 4061
  addr: 10.74.67.4

4、The configuration read out is ： Still the result of the second step

final result：The configuration has reduced one element but there is no hot update configuration

Additional Information

No response

[chengxilo]

I tried it with the source code of main branch and this situation doesn't occur.(But the viper 1.19 which I downloaded with go mod did). Maybe it would be fixed in the next release.