Ansible:带冒号的json元素条形键
Ansible:带冒号的json元素条形键
提问于 2019-11-30 06:12:27
如何删除包含冒号(:)和jinja2 rejectattr的json键。
环境：
ansible 2.9.1
config file = None
configured module search path = [u'/home/<user>/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
ansible python module location = /usr/lib/python2.7/dist-packages/ansible
executable location = /usr/bin/ansible
python version = 2.7.15+ (default, Oct 7 2019, 17:39:04) [GCC 7.4.0]json数据：
{
"tag:environment": "qa",
"tag:instance_id": "i-123456789"
}Ansible playbook：
- name: Remove InstanceID
debug:
msg: "{{ instance_filter | rejectattr('['tag:environment'], 'defined' ') | list }}实际结果：
fatal: [localhost]: FAILED! => {
"msg": "template error while templating string: expected token ',', got 'tag'. String: {{ instance_filter | rejectattr('['tag:environment'], 'defined' ') | list }}"
}预期结果：
{
"tag:environment": "qa"
}回答 2
Stack Overflow用户
发布于 2019-11-30 06:46:04
rejectattr确实是实现目标的关键过滤器之一，但还需要更多的东西。下面是从您拥有的字典变量中删除该特定键的正确过滤器序列：
攻略：
---
- hosts: localhost
gather_facts: false
vars:
instance_filter:
tag:environment: qa
tag:instance_id: i-123456789
tasks:
- name: print var
debug:
var: instance_filter
- name: manipulate the var
debug:
msg: "{{ instance_filter | dict2items | rejectattr('key', 'equalto', 'tag:instance_id') | list | items2dict }}"输出：
PLAY [localhost] *******************************************************************************************************************************************************************************************************
TASK [print var] *******************************************************************************************************************************************************************************************************
ok: [localhost] => {
"instance_filter": {
"tag:environment": "qa",
"tag:instance_id": "i-123456789"
}
}
TASK [manipulate the var] **********************************************************************************************************************************************************************************************
ok: [localhost] => {
"msg": {
"tag:environment": "qa"
}
}
PLAY RECAP *************************************************************************************************************************************************************************************************************
localhost : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0希望能有所帮助。
Stack Overflow用户
发布于 2019-11-30 20:21:32
JSON Q：“如何删除
密钥？”
答：create custom filter plugins是可能的。例如
$ cat filter_plugins/dict_utils.py
def dict_del_key(d, key):
del d[key]
return d
class FilterModule(object):
''' Ansible filters. Interface to Python dictionary methods.'''
def filters(self):
return {
'dict_del_key' : dict_del_key
}下面的剧本
- hosts: localhost
vars:
dict:
'tag:environment': 'qa'
'tag:instance_id': 'i-123456789'
tasks:
- debug:
msg: "{{ dict|dict_del_key('tag:instance_id') }}"给出
msg:
tag:environment: qa
备注：
请参见If you quote those config keys, they will become strings.
- FWIW.和
- 7.3.1. Double-Quoted Style之间的区别查看GitHub.
上提供的其他过滤器
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/59111488
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