這是我YAML
文件:Golang:檢索嵌套鍵在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
這是我的go代碼:
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)
}
這裏是輸出:
(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"
}
}
}
問題:如何從我的YAML中檢索以下密鑰?
apt_key:
url: http://nginx.org/keys/nginx_signing.key
state: present
此刻,我的Go語法分析器完全忽略了輸出中的上述鍵。
另外,我有許多YAML文件,其中嵌套的程度不同。然後大多數文件本身具有不同程度的嵌套。那麼我的struct
需要修改以解決每個單獨的密鑰?或者,什麼是更好的go處理YAML
文件的方法,每個鍵的嵌套級別不同?
>>> UPDATE < < <:
我通過修改取得了一些進展我Tasks
的struct
如下內:
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`
}
}
輸出:
(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"
}
}
}
所以現在我可以看到apt_key
部分早先完全失蹤。 不過,我不覺得這是寫在YAML作爲command
部分:
command: pip3 install awscli
如何獲得呢?
此外,我沒有得到一個不錯的感覺,因爲我必須在struct
中聲明幾乎每一個鍵,在這種情況下,因爲我的YAML
幾乎不是15行。但是,如果YAML
越來越大,這將會是醜陋和麻煩的。 我確信go必須有更好更高效的方式來處理YAML
文件。
謝謝。 +1。我試過,發現'command'在不存在的鍵中顯示爲空。我認爲這是做錯的方法。 – slayedbylucifer