go语言yaml转map、map遍历的实现

yaml文件内容

apiversion: policy/v1beta1
kind: podsecuritypolicy
metadata:
  name: mysql-snapshot
spec: 
  privileged: false
  allowprivilegeescalation: false
  volumes:
  - "*"
  hostnetwork: false
  hostipc: false
  hostpid: false
  runasuser:
    rule: runasany
  selinux:
    rule: runasany
  supplementalgroups:
    rule: runasany
  fsgroup:
    rule: runasany

示例代码：实现了base64 编解码、yaml转map、以及map遍历

func main() {
f, err := os.open("cmd/test.yaml")
 if err != nil {
  log.fatalln(err)
  return
 }

 input, _ := ioutil.readall(f)
 // base64 编码
 encodestring := base64.stdencoding.encodetostring(input)
fmt.println(encodestring)


// base64 解码
 decodebytes, err := base64.stdencoding.decodestring(encodestring)
 if err != nil {
  log.fatalln(err)
 }

//yaml文件内容转换成map[interface{}]interface{})

 resultmap := make(map[interface{}]interface{})
 if err := yaml.unmarshal(decodebytes, &resultmap); err != nil {
  // error handling
  log.fatalln(err)

 }

// 遍历map ，此处取metadata.name值
 for key, value := range resultmap {
  switch key := key.(type) {
  case string:
   if key == "metadata" {
    switch value := value.(type) {
    case string:
    case map[interface{}]interface{}:
     for k, v := range value {
      switch k.(type) {
      case string:
        if k == "name" {
         fmt.println("value=", v)
        }
      }
     }

    }

   }
  }
 }
}

结果

encodestring = "yxbpvmvyc2lvbjogcg9sawn5l3yxymv0yteka2luzdogug9ku2vjdxjpdhlqb2xpy3kkbwv0ywrhdge6ciagbmftztogbxlzcwwtc25hchnob3qkc3blyzogciagchjpdmlszwdlzdogzmfsc2ukicbhbgxvd1byaxzpbgvnzuvzy2fsyxrpb246igzhbhnlciagdm9sdw1lczokicaticiqigogighvc3rozxr3b3jroibmywxzzqogighvc3rjuem6igzhbhnlciagag9zdfbjrdogzmfsc2ukicbydw5bc1vzzxi6ciagicbydwxloibsdw5bc0fueqogihnltgludxg6ciagicbydwxloibsdw5bc0fueqogihn1chbszw1lbnrhbedyb3vwczokicagihj1bgu6ifj1bkfzqw55ciagznnhcm91cdokicagihj1bgu6ifj1bkfzqw55cg=="

value=mysql-snapshot

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