ansible-将字符串追加到存储在变量中的每个列表项中

Question

Hello开发者社区！

我目前正在开发一些Ansible剧本来管理Citrix NetScaler配置，并希望获得有关以下方面的帮助。我在YAML文件中定义了以下数据结构：

prefix_header:                         "foo"
prefix_trailer:                        "bar"

nsapp_cs_vserver:
  - name:                              "testwebvserver-4_SSL_443"
    policybindings:
      - policyname:                    "TO_testwebservice-3"
        priority:                      "100"
      - policyname:                    "To-be-deleted"
        priority:                      "110"

我正在尝试找到一种简单的方法来将“ policybindings”列表变量的内容动态转换为以下格式：（我想将标头和尾标前缀附加到“ policyname”的实际值上）]

    policybindings:
      - policyname:                    "foo_TO_testwebservice-3_bar"
        priority:                      "100"
      - policyname:                    "foo_To-be-deleted_bar"
        priority:                      "110"

我想使用带有标题和结尾前缀的策略名称来调用netscaler_cs_vserver Ansible模块来配置内容切换。

- name: "Bind CS policy(ies) to CS vServer(s) on ACTIVE node"
  netscaler_cs_vserver:
    name: "{{ prefix_header }}{{ item.name }}{{ prefix_trailer}}"
    policybindings: "{{ item.policybindings }}"
  register: bind_nsapp_cs_policy_result
  loop: "{{ nsapp_cs_vserver }}"

任何人都可以建议实现此目标的正确和有效方法是什么？

非常感谢！

Answer 1

可以循环include_tasks处理嵌套列表。例如文件

shell> cat convert-list.yml
- set_fact:
    policybindings: []
- set_fact:
    policybindings: "{{ policybindings +
                        [item|combine({'policyname':
                              item.policyname|
                              regex_replace( myregex, myreplace)})] }}"
  loop: "{{ outer_item.policybindings }}"
  vars:
    myregex: '^(.*)$'
    myreplace: "{{ prefix_header ~ '_\\1_' ~ prefix_trailer }}"

- set_fact:
    nsapp_cs_vserver2: "{{ nsapp_cs_vserver2|default([]) +
                           [outer_item|combine({'policybindings': policybindings})] }}"

包含在“外循环”任务中

    - include_tasks: convert-list.yml
      loop: "{{ nsapp_cs_vserver }}"
      loop_control:
        loop_var: outer_item
    - debug:
        var: nsapp_cs_vserver2

给予

    "nsapp_cs_vserver2": [
        {
            "name": "testwebvserver-4_SSL_443", 
            "policybindings": [
                {
                    "policyname": "foo_TO_testwebservice-3_bar", 
                    "priority": "100"
                }, 
                {
                    "policyname": "foo_To-be-deleted_bar", 
                    "priority": "110"
                }
            ]
        }
    ]