Ansible 从列表中删除空行 [英] Ansible remove blank lines from list
问题描述
所以我有一个剧本可以检索 AD 组的成员并为我提供他们的用户 ID 列表，如下所示:
So I've got a playbook that retrieves the members of an AD group and gives me a list of their user IDs like this:
tasks:
- name: Get group members
set_fact:
member: "{{ item }}"
register: members
with_ldap:
- context: group_members
- Jira_Administrators_GG
- name: Get userids
set_fact:
userid: "{{ lookup('ldap', '{{ item.item }}', context='users') }}"
register: userids
with_items: "{{ members.results }}"
- name: Create list of userids
set_fact:
userid_list: "{{ userids.results | map(attribute='ansible_facts.userid') | list }}"
问题是我在结果列表中得到了几个空行:
Trouble is I end up with a few blank lines in the resultant list:
- name: Show userids
debug:
msg: "{{ hostvars['localhost']['userid_list'] }}"
输出:
TASK [Show userids] **************************************
ok: [xxxxxxxxx01] => {
"msg": [
"xxxxxxxxx55",
"xxxxxxxxx58",
"xxxxxxxxx71",
[],
"xxxxxxxxx46",
[],
"xxxxxxxxx27",
[],
"xxxxxxxxx63",
"xxxxxxxxx27",
[],
"xxxxxxxxx04",
"xxxxxxxxx87"
]
}
有谁知道如何从列表中删除空行?我看过 http://jinja.pocoo.org/docs/2.9/templates/#builtin-filters 并在 map 之间尝试了几个像 replace() 和 rejectattr()> 和 list 但无论出于何种原因我都没有做对.
Does anyone know how to remove the blank lines from the list? I've had a look through http://jinja.pocoo.org/docs/2.9/templates/#builtin-filters and tried a couple like replace() and rejectattr() in between the map and list but for whatever reason I'm not getting it right.
编辑 - 一些无效的尝试...
EDIT - Some attempts that didn't work...
我显然没有得到正确的语法:
I'm clearly not getting the syntax right with this one:
- name: Create list of userids
set_fact:
userid_list: "{{ userids.results | rejectattr('ansible_facts.userid', 'equalto', '') | map(attribute='ansible_facts.userid') | list }}"
...因为输出是:
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: TemplateRuntimeError: no test named ''
fatal: [localhost]: FAILED! => {"failed": true, "msg": "Unexpected failure during module execution.", "stdout": ""}
然后我尝试在 map 之前移动 rejectattr().这更好，它实际上运行但似乎对结果列表没有任何影响:
I then tried moving rejectattr() before map. This was better, it actually runs but doesn't seem to make any difference to the resultant list:
- name: Create list of userids
set_fact:
userid_list: "{{ userids.results | rejectattr('ansible_facts.userid', 'equalto', '') | map(attribute='ansible_facts.userid') | list }}"
我尝试使用 reject() 而不是 rejectattr() 像这样:
I tried with reject() instead of rejectattr() like this:
- name: Create list of userids
set_fact:
userid_list: "{{ userids.results | reject('equalto', '') | map(attribute='ansible_facts.userid') | list }}"
...就像这样:
- name: Create list of userids
set_fact:
userid_list: "{{ userids.results | map(attribute='ansible_facts.userid') | reject('equalto', '') | list }}"
我尝试了一些排列，我也尝试与 '[]' 而不是 '' 进行比较，因为我的空行在结果列表中显示为这样.我想我只是不明白如何正确应用过滤器.
I've tried a few permutations, I also tried comparing to '[]' instead of '' because my empty lines show like that in the resultant list. I guess I just don't understand how to apply the filters correctly.
编辑 - 变量内容
现在如果我这样做
- debug:
var: userids
我得到了这个(截断以显示 2 个填充了 userid 的结果和 1 个 userid 为空的结果):
I get this (truncated to show 2 results that have userid populated and 1 with userid blank):
ok: [localhost] => {
"userids": {
"changed": false,
"msg": "All items completed",
"results": [
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"ansible_facts": {
"userid": "xxxxxxxxx55"
},
"changed": false,
"item": {
"_ansible_item_result": true,
"_ansible_no_log": false,
"ansible_facts": {
"member": "CN=Liam Fitzpatrick,OU=My User OU,DC=my,DC=domain,DC=com"
},
"changed": false,
"item": "CN=Liam Fitzpatrick,OU=My User OU,DC=my,DC=domain,DC=com"
}
},
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"ansible_facts": {
"userid": "xxxxxxxxx58"
},
"changed": false,
"item": {
"_ansible_item_result": true,
"_ansible_no_log": false,
"ansible_facts": {
"member": "CN=Mr Jones,OU=My User OU,DC=my,DC=domain,DC=com"
},
"changed": false,
"item": "CN=Mr Jones,OU=My User OU,DC=my,DC=domain,DC=com"
}
},
{
"_ansible_item_result": true,
"_ansible_no_log": false,
"ansible_facts": {
"userid": []
},
"changed": false,
"item": {
"_ansible_item_result": true,
"_ansible_no_log": false,
"ansible_facts": {
"member": "CN=Mr Smith,OU=My User OU,DC=my,DC=domain,DC=com"
},
"changed": false,
"item": "CN=Mr Smith,OU=My User OU,DC=my,DC=domain,DC=com"
}
}
推荐答案
你有一个字符串列表(例如 "xxxxxxxxx63")和空列表([])– 不是空字符串.
You have a list of strings (e.g. "xxxxxxxxx63") and empty lists ([]) – not empty strings.
您可以使用 Jinja2 select/reject 过滤器，例如:
You can use Jinja2 select/reject filters, for example:
- name: Create list of userids
set_fact:
userid_list: "{{ userids.results | map(attribute='ansible_facts.userid') | select('string') | list }}"
附言并避免嵌套的大括号，使用:
P.S. and avoid nested curly brackets, use:
"{{ lookup('ldap', item.item, context='users') }}"
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