☰

Ansible：將字串轉換為字典

tag-icon • tag-icon ansible
Ansible：將字串轉換為字典

我從 Tower 啟動 Ansible，然後以文字填寫新用戶：

{ name: user1, uid: 5000 }
{ name: user2, uid: 5001 }

我想將這些用戶作為字典進行迭代，如下所示：

- name: Print vars
  debug:
    var: "{{ item.name }}"
  with_items: "{{ users.split('\n') }}"

但它不起作用：

TASK [Print vars] *********************************************************************************************************************
ok: [lx-test] => (item={ name: user1, uid: 5000 }) => {
    "ansible_loop_var": "item",
    "item": "{ name: user1, uid: 5000 }",
    "{ name: user1, uid: 5000 }": "VARIABLE IS NOT DEFINED!"
}
ok: [lx-test] => (item={ name: user2, uid: 5001 }) => {
    "ansible_loop_var": "item",
    "item": "{ name: user2, uid: 5001 }",
    "{ name: user2, uid: 5001 }": "VARIABLE IS NOT DEFINED!"
}

知道如何將該字串轉換為真正的字典嗎？先致謝！

答案1

更新

下面的表達式

users_list: "{{ users_str.splitlines()|map('from_yaml')|list }}"

給出

users_list:
  - name: user1
    uid: 5000
  - name: user2
    uid: 5001

將變數宣告為合適的。

用於測試的完整劇本範例

- hosts: localhost

  vars:

    users_str: |
      {name: user1, uid: 5000}
      {name: user2, uid: 5001}

    users_list: "{{ users_str.splitlines()|map('from_yaml')|list }}"

  tasks:

    - debug:
        var: users_list

（可選）將資料放入 CSV 檔案中

shell> cat /tmp/users.csv 
name,uid
user1,5000
user2,5001

並使用社區.general.read_csv閱讀它

- hosts: localhost

  tasks:

    - community.general.read_csv:
        path: /tmp/users.csv
      register: users
    - debug:
        var: users.list

給出（刪節）

  users.list:
  - name: user1
    uid: '5000'
  - name: user2
    uid: '5001'

原答案

該文本既不是有效的 JSON，也不是有效的 YAML。您必須拆分行並逐行閱讀字典。例如，給定文本

users_str: |
  {name: user1, uid: 5000}
  {name: user2, uid: 5001}

下面的任務

    - set_fact:
        users_list: "{{ users_list|d([]) + [item|from_yaml] }}"
      loop: "{{ users_str.splitlines() }}"

建立字典列表

users_list:
  - name: user1
    uid: 5000
  - name: user2
    uid: 5001

現在迭代是微不足道的

    - debug:
        var: item.name
      loop: "{{ users_list }}"

給出

  item.name: user1
  item.name: user2

相關內容