英文:
Loop with conditional in ansible
问题
我有一个Ansible中的Keycloak领域模板，想要从该模板加载值数组。
我的模板文件大致如下：
{
// 这里是一些 JSON
"roles": {
"client": {
"demo-app": [
{
"name": "Administrator",
"composite": true,
"composites": {
"client": {
"realm-management": [
"view-users",
"manage-identity-providers",
"query-clients",
"query-users"
]
}
},
"clientRole": true
},
{
"name": "Developer",
"composite": false,
"clientRole": true
},
{
"name": "Operator",
"composite": false,
"clientRole": true
}
]
}
}
}
现在，我想从模板中读取realm-management 数组的值。为此，我在Ansible中编写了以下任务：
- name: 'Ensure realm-management roles are added to demo-app "Administrator" role'
debug:
msg: "{{ item }}"
loop: "{{ lookup('template', 'realm/DemoRealm-realm.json.j2').roles.client['demo-app'] | subelements('composites.client.realm-management') }}"
when:
- item.name == 'Administrator'
- item.composite == true
- item.composites is defined
我的期望是打印realm-management 数组中的值。但是，我添加的任务也在循环遍历 Developer 和 Operator 对象，忽略了条件，并且由于它们没有composites 键，任务失败了。我尝试了很多方法，但没有一个有效。请建议我该怎么做。
英文:
I have a keycloak realm template in ansible and want to load array of values from that template.
My template file looks something like this:
{
// Some json here
"roles": {
"client": {
"demo-app": [
{
"name": "Administrator",
"composite": true,
"composites": {
"client": {
"realm-management": [
"view-users",
"manage-identity-providers",
"query-clients",
"query-users",
]
}
},
"clientRole": true,
},
{
"name": "Developer",
"composite": false,
"clientRole": true,
},
{
"name": "Operator",
"composite": false,
"clientRole": true,
}
],
}
}
}
Now I want to read realm-management array values from the template. For that, I have written task in ansible. It goes as below:
- name: 'Ensure realm-management roles are added to demo-app "Administrator" role'
debug:
msg: "{{ item }}"
loop: "{{ lookup('template', 'realm/DemoRealm-realm.json.j2').roles.client['demo-app'] }} | subelements('composites.client.realm-management') }}"
when:
- item.name == 'Administrator'
- item.composite == true
- item.composites is defined
My expectation is to print values from realm-management array. But the task I have added is also looping through Developer and Operator objects ignoring conditional and as they don't have composites key in them, task is failing. I have tried numerous approaches but none worked. Please suggest me what to do.
答案1
得分: 1
你可以使用 json_query 来验证对象属性，如下所示：
loop: "{{ lookup('template', 'realm/DemoRealm-realm.json.j2').roles.client['demo-app'] | json_query('[?name==`Administrator` && composite==`true` && composites]') }}"
when: item.composites is defined
英文:
You can use json_query to validate object properties like so:
loop: "{{ lookup('template', 'realm/DemoRealm-realm.json.j2').roles.client['demo-app'] | json_query('[?name==`Administrator` && composite==`true` && composites]') }}"
when: item.composites is defined"
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