go语言yaml转map、map遍历

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