Question

我正在尝试弄清楚如何组合大小不同的两个字典。目的是将其他收件人添加到第三本词典的收件人列表中。

mail_aliases_list:
  - name: mailer-daemon
    recipients:
      - foo
  - name: postmaster
    recipients:
      - bar
  - name: bin
    recipients:
      - baz
  ...

和

mail_aliases_defaults:
  - name: mailer-daemon
    recipients:
      - postmaster
  - name: postmaster
    recipients:
      - root
  - name: bin
    recipients:
      - root
  ...

产生

mail_aliases:
  - name: mailer-daemon
    recipients:
      - postmaster
      - foo
  - name: postmaster
    recipients:
      - root
      - bar
  - name: bin
    recipients:
      - root
      - baz
  ...

这有点超出我对过滤器的理解，我很沮丧，我什至不得不寻求帮助，但希望我会在此过程中学到一些东西。

Answer 1

没有一种简单的方法可以准确地完成您想要的操作，而数据的结构方式则使其变得更加困难。如果将mail_aliases_list和mail_aliases_defaults变成字典，则可以更轻松地实现所需的最终状态。

类似的东西：

- hosts: localhost
  gather_facts: false
  become: true
  vars:
    mail_aliases_overrides:
      mailer-daemon:
        recipients:
          - foo
      postmaster:
        recipients:
          - bar
      bin:
        recipients:
          - baz
      not_in_defaults:
        recipients:
          - bob
    mail_aliases_defaults:
      mailer-daemon:
        recipients:
          - postmaster
      postmaster:
        recipients:
          - root
      bin:
        recipients:
          - root
      only_in_defaults:
        recipients:
          - alice

  tasks:
    - set_fact:
        mail_aliases: >-
          {{ mail_aliases|default({})|combine({item:
          (mail_aliases_overrides[item]|default({'recipients': []})).recipients +
          (mail_aliases_defaults[item]|default({'recipients': []})).recipients
          })
          }}
      loop: "{{ (mail_aliases_overrides.keys()|list + mail_aliases_defaults.keys()|list)|unique }}"

    - debug:
        var: mail_aliases

这将作为输出生成：

PLAY [localhost] ******************************************************************************************************************************************************************************

TASK [set_fact] *******************************************************************************************************************************************************************************
ok: [localhost] => (item=mailer-daemon)
ok: [localhost] => (item=postmaster)
ok: [localhost] => (item=bin)
ok: [localhost] => (item=not_in_defaults)
ok: [localhost] => (item=only_in_defaults)

TASK [debug] **********************************************************************************************************************************************************************************
ok: [localhost] => {
    "mail_aliases": {
        "bin": [
            "baz",
            "root"
        ],
        "mailer-daemon": [
            "foo",
            "postmaster"
        ],
        "not_in_defaults": [
            "bob"
        ],
        "only_in_defaults": [
            "alice"
        ],
        "postmaster": [
            "bar",
            "root"
        ]
    }
}

PLAY RECAP ************************************************************************************************************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0

我已经确保它可以与仅存在于mail_aliases_defaults或mail_aliases_overrides之一中的键一起使用。

Ansible-合并两个字典列表

1 个答案: