问:Ansible-如何将2个哈希表列表与一个公用键/值对合并 [英] Q: Ansible - How can I merge 2 lists of hashes with a common key/value pair
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问题描述
如何使用Ansible 2.4.4基于键/值对合并2个哈希列表
How can I merge 2 lists of hashes based on a key/value pair, using Ansible 2.4.4
"foo": [
{
"hostname": "web1.example.com",
"guid": "73e85eb2-2ad5-4699-8a09-adf658a11ff2"
},
{
"hostname": "web2.example.com",
"guid": "827025fe-f13c-4fc8-ba51-7ff582596bbd"
},
{
"hostname": "web3.example.com",
"guid": "bba27304-c1bb-4889-aa44-125626be8488"
}
]
"bar": [
{
"ipaddress": "1.1.1.1",
"guid": "73e85eb2-2ad5-4699-8a09-adf658a11ff2"
},
{
"ipaddress": "2.2.2.2",
"guid": "827025fe-f13c-4fc8-ba51-7ff582596bbd"
},
{
"ipaddress": "3.3.3.3",
"guid": "bba27304-c1bb-4889-aa44-125626be8488"
}
]
我想要类似的东西:
"foobar" : [
{
"hostname": "web1.example.com",
"guid": "73e85eb2-2ad5-4699-8a09-adf658a11ff2",
"ipaddress": "1.1.1.1"
},
{
"hostname": "web2.example.com",
"guid": "827025fe-f13c-4fc8-ba51-7ff582596bbd",
"ipaddress": "2.2.2.2"
},
{
"hostname": "web3.example.com",
"guid": "bba27304-c1bb-4889-aa44-125626be8488",
"ipaddress": "3.3.3.3"
}
]
我研究了几种Ansible/Jinja2过滤器,包括合并,并集,映射,自定义插件,但收效甚微.我需要能够在GUID上进行匹配.
I've looked into several Ansible / Jinja2 filters including combine, union, map, custom plugins, but not having much success. I need to be able to match on the guid.
推荐答案
not sure if there is a smarter way, but to achieve what you need you can use the nested query plugin to loop over the combinations of the elements from the 2 list variables, find the combinations that have the common field equal, and then construct a new dictionary element and append it to the "final" list variable.
剧本:
- hosts: localhost
gather_facts: false
vars:
foo:
- hostname: web1.example.com
guid: 73e85eb2-2ad5-4699-8a09-adf658a11ff2
- hostname: web2.example.com
guid: 827025fe-f13c-4fc8-ba51-7ff582596bbd
- hostname: web3.example.com
guid: bba27304-c1bb-4889-aa44-125626be8488
bar:
- ipaddress: 1.1.1.1
guid: 73e85eb2-2ad5-4699-8a09-adf658a11ff2
- ipaddress: 2.2.2.2
guid: 827025fe-f13c-4fc8-ba51-7ff582596bbd
- ipaddress: 3.3.3.3
guid: bba27304-c1bb-4889-aa44-125626be8488
tasks:
- name: merge lists
set_fact:
merged_list: "{{ merged_list|default([]) + [{ 'hostname': item[0].hostname, 'guid': item[0].guid, 'ipaddress': item[1].ipaddress }] }}"
when: "item[0].guid == item[1].guid"
loop: "{{ query('nested', foo, bar) }}"
- name: print results
debug:
var: merged_list
结果:
TASK [print results] ************************************************************************************************************************************************************************************************
ok: [localhost] => {
"merged_list": [
{
"guid": "73e85eb2-2ad5-4699-8a09-adf658a11ff2",
"hostname": "web1.example.com",
"ipaddress": "1.1.1.1"
},
{
"guid": "827025fe-f13c-4fc8-ba51-7ff582596bbd",
"hostname": "web2.example.com",
"ipaddress": "2.2.2.2"
},
{
"guid": "bba27304-c1bb-4889-aa44-125626be8488",
"hostname": "web3.example.com",
"ipaddress": "3.3.3.3"
}
]
}
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