ansible.utils.get_path 查找 – 使用路径检索变量中的值
注意
此查找插件是 ansible.utils 集合(版本 5.1.2)的一部分。
如果您正在使用 ansible
包,您可能已经安装了这个集合。它不包含在 ansible-core
中。要检查是否已安装,请运行 ansible-galaxy collection list
。
要安装它,请使用: ansible-galaxy collection install ansible.utils
。
要在 playbook 中使用它,请指定:ansible.utils.get_path
。
ansible.utils 1.0.0 中的新功能
概要
使用路径从变量中检索嵌套值
为了方便起见,get_path 也可用作**过滤器插件**
使用以下参数:
lookup('ansible.utils.get_path', var, path, wantlist
)
关键字参数
这描述了查找的关键字参数。这些是以下示例中的值 key1=value1
、key2=value2
等:lookup('ansible.utils.get_path', key1=value1, key2=value2, ...)
和 query('ansible.utils.get_path', key1=value1, key2=value2, ...)
参数 |
注释 |
---|---|
在变量中检索值的路径。 路径需要是有效的 Jinja 路径。 |
|
应从中提取值的变量。 |
|
如果设置为 也可以使用 https://docs.ansible.org.cn/ansible/latest/plugins/lookup.html. 选项
|
示例
- ansible.builtin.set_fact:
a:
b:
c:
d:
- 0
- 1
e:
- true
- false
- name: Retrieve a value deep inside a using a path
ansible.builtin.set_fact:
value: "{{ lookup('ansible.utils.get_path', a, path) }}"
vars:
path: b.c.d[0]
# TASK [Retrieve a value deep inside a using a path] ******************
# ok: [localhost] => changed=false
# ansible_facts:
# value: '0'
#### Working with hostvars
- name: Retrieve a value deep inside all of the host's vars
ansible.builtin.set_fact:
value: "{{ lookup('ansible.utils.get_path', look_in, look_for) }}"
vars:
look_in: "{{ hostvars[inventory_hostname] }}"
look_for: a.b.c.d[0]
# TASK [Retrieve a value deep inside all of the host's vars] ********
# ok: [nxos101] => changed=false
# ansible_facts:
# as_filter: '0'
# as_lookup: '0'
#### Used alongside ansible.utils.to_paths
- name: Get the paths for the object
ansible.builtin.set_fact:
paths: "{{ lookup('ansible.utils.to_paths', a, prepend='a') }}"
- name: Retrieve the value of each path from vars
ansible.builtin.debug:
msg: "The value of path {{ path }} in vars is {{ value }}"
loop: "{{ paths.keys()|list }}"
loop_control:
label: "{{ item }}"
vars:
path: "{{ item }}"
value: "{{ lookup('ansible.utils.get_path', hostvars[inventory_hostname], item) }}"
# TASK [Get the paths for the object] *******************************
# ok: [nxos101] => changed=false
# ansible_facts:
# paths:
# a.b.c.d[0]: 0
# a.b.c.d[1]: 1
# a.b.c.e[0]: True
# a.b.c.e[1]: False
# TASK [Retrieve the value of each path from vars] ******************
# ok: [nxos101] => (item=a.b.c.d[0]) =>
# msg: The value of path a.b.c.d[0] in vars is 0
# ok: [nxos101] => (item=a.b.c.d[1]) =>
# msg: The value of path a.b.c.d[1] in vars is 1
# ok: [nxos101] => (item=a.b.c.e[0]) =>
# msg: The value of path a.b.c.e[0] in vars is True
# ok: [nxos101] => (item=a.b.c.e[1]) =>
# msg: The value of path a.b.c.e[1] in vars is False
#### Working with complex structures and transforming results
- name: Retrieve the current interface config
cisco.nxos.nxos_interfaces:
state: gathered
register: interfaces
- name: Get the description of several interfaces
ansible.builtin.debug:
msg: "{{ lookup('ansible.utils.get_path', rekeyed, item) }}"
vars:
rekeyed:
by_name: "{{ interfaces.gathered|ansible.builtin.rekey_on_member('name') }}"
loop:
- by_name['Ethernet1/1'].description
- by_name['Ethernet1/2'].description|upper
- by_name['Ethernet1/3'].description|default('')
# TASK [Get the description of several interfaces] ******************
# ok: [nxos101] => (item=by_name['Ethernet1/1'].description) => changed=false
# msg: Configured by ansible
# ok: [nxos101] => (item=by_name['Ethernet1/2'].description|upper) => changed=false
# msg: CONFIGURED BY ANSIBLE
# ok: [nxos101] => (item=by_name['Ethernet1/3'].description|default('')) => changed=false
# msg: ''
返回值
键 |
描述 |
---|---|
一个或多个匹配列表项的从零开始的索引。 如果始终需要列表,请参阅 返回: 成功 |