这是我YAML
文件:Golang:检索嵌套键在YAML
hosts: all
gather_facts: no
remote_user: ubuntu
name: install latest nginx
tasks:
- name: install the nginx key
apt_key:
url: http://nginx.org/keys/nginx_signing.key
state: present
become: yes
- name: install aws cli
command: pip3 install awscli
become: yes
这是我的go代码:
package main
import (
"github.com/davecgh/go-spew/spew"
"gopkg.in/yaml.v2"
"io/ioutil"
)
type Config struct {
Hosts string `yaml:hosts`
Gather_facts string `yaml:gatherfacts`
Remote_user string `yaml:remoteuser`
Name string `yaml:names`
Tasks []map[string]string `yaml:tasks`
}
func main() {
file, err := ioutil.ReadFile("/path-to-nginx1.yml")
if err != nil {
panic(err)
}
var config Config
yaml.Unmarshal(file, &config)
spew.Dump(config)
}
这里是输出:
(main.Config) {
Hosts: (string) (len=3) "all",
Gather_facts: (string) (len=2) "no",
Remote_user: (string) (len=6) "ubuntu",
Name: (string) (len=20) "install latest nginx",
Tasks: ([]map[string]string) (len=2 cap=2) {
(map[string]string) (len=2) {
(string) (len=6) "become": (string) (len=3) "yes",
(string) (len=4) "name": (string) (len=21) "install the nginx key"
},
(map[string]string) (len=3) {
(string) (len=4) "name": (string) (len=15) "install aws cli",
(string) (len=7) "command": (string) (len=19) "pip3 install awscli",
(string) (len=6) "become": (string) (len=3) "yes"
}
}
}
问题:如何从我的YAML中检索以下密钥?
apt_key:
url: http://nginx.org/keys/nginx_signing.key
state: present
此刻,我的Go语法分析器完全忽略了输出中的上述键。
另外,我有许多YAML文件,其中嵌套的程度不同。然后大多数文件本身具有不同程度的嵌套。那么我的struct
需要修改以解决每个单独的密钥?或者,什么是更好的go处理YAML
文件的方法,每个键的嵌套级别不同?
>>> UPDATE < < <:
我通过修改取得了一些进展我Tasks
的struct
如下内:
type Config struct {
Hosts string `yaml:hosts`
Gather_facts string `yaml:gatherfacts`
Remote_user string `yaml:remoteuser`
Name string `yaml:names`
Tasks []struct {
Name string `yaml:name`
Apt_key struct {
Url string `yaml:url`
State string `yaml:url`
} `yaml:apt_key`
Become string `yaml:become`
}
}
输出:
(main.Config) {
Hosts: (string) (len=3) "all",
Gather_facts: (string) (len=2) "no",
Remote_user: (string) (len=6) "ubuntu",
Name: (string) (len=20) "install latest nginx",
Tasks: ([]struct { Name string "yaml:name"; Apt_key struct { Url string "yaml:url"; State string "yaml:url" } "yaml:apt_key"; Become string "yaml:become" }) (len=2 cap=2) {
(struct { Name string "yaml:name"; Apt_key struct { Url string "yaml:url"; State string "yaml:url" } "yaml:apt_key"; Become string "yaml:become" }) {
Name: (string) (len=21) "install the nginx key",
Apt_key: (struct { Url string "yaml:url"; State string "yaml:url" }) {
Url: (string) (len=39) "http://nginx.org/keys/nginx_signing.key",
State: (string) (len=7) "present"
},
Become: (string) (len=3) "yes"
},
(struct { Name string "yaml:name"; Apt_key struct { Url string "yaml:url"; State string "yaml:url" } "yaml:apt_key"; Become string "yaml:become" }) {
Name: (string) (len=15) "install aws cli",
Apt_key: (struct { Url string "yaml:url"; State string "yaml:url" }) {
Url: (string) "",
State: (string) ""
},
Become: (string) (len=3) "yes"
}
}
}
所以现在我可以看到apt_key
部分早先完全失踪。 不过,我不觉得这是写在YAML作为command
部分:
command: pip3 install awscli
如何获得呢?
此外,我没有得到一个不错的感觉,因为我必须在struct
中声明几乎每一个键,在这种情况下,因为我的YAML
几乎不是15行。但是,如果YAML
越来越大,这将会是丑陋和麻烦的。 我确信go必须有更好更高效的方式来处理YAML
文件。
谢谢。 +1。我试过,发现'command'在不存在的键中显示为空。我认为这是做错的方法。 – slayedbylucifer