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G4nja Wizard
Asked: 2024-12-17 22:30:57 +0800 CST

如何根据字符串值的条件循环子元素？

  • 772

我正在使用嵌套字典，并且有多个具有相同键的字典文件。字典和任务本身正在运行，但我需要添加以下条件。如果子元素的状态 == 不存在，则不要运行任务

我的字典：

qualitygate:
  - qualitygate_name: QA-dev
    operators:
      - metric: coverage
        operator: CT
        error: 1
        state: present
  - qualitygate_name: Department-xyc
    operators:
      - metric: coverage
        operator: CT
        error: 10
        state: absent
      - metric: duplicated_lines
        operator: GT
        error: 5
        state: present

使用我的任务：

- ansible.builtin.uri:
    url: "{{ protocol }}://{{ server_fqdn }}/api/qualitygates/create_condition"
    user: "{{ token }}"
    method: POST
    body_format: form-urlencoded
    body:
        error: "{{ item.1.error }}"
        metric: "{{ item.1.metric }}"
        gateName: "{{ item.0.qualitygate_name }}"
        op: "{{ item.1.operator }}"
  loop: "{{ qualitygate | subelements('operators', 'skip_missing=True') }}"
  when: qualitygate[item]['state'] is match("present")

如何更改过滤器以仅匹配“present”值

ansible

2 个回答

  1. 在条件中使用子元素 item

          when: item.1.state == 'present'

    完整测试剧本的示例

    - hosts: localhost

  vars:

    qualitygate:
      - operators:
        - {error: 1, metric: coverage, operator: CT, state: present}
        qualitygate_name: QA-dev
      - operators:
        - {error: 10, metric: coverage, operator: CT, state: absent}
        - {error: 5, metric: duplicated_lines, operator: GT, state: present}
        qualitygate_name: Department-xyc

  tasks:

    - debug:
        msg: |
          error: {{ item.1.error }}
          metric: {{ item.1.metric }}
          op: {{ item.1.operator }}
          gateName: {{ item.0.qualitygate_name }}
      loop: "{{ qualitygate | subelements('operators', skip_missing=True) }}"
      loop_control:
        label: "{{ item.0.qualitygate_name }} {{ item.1.operator }} {{ item.1.state }}"
      when: item.1.state == 'present'

    给出简略

    ok: [localhost] => (item=QA-dev CT present) => 
  msg: |-
    error: 1
    metric: coverage
    op: CT
    gateName: QA-dev
skipping: [localhost] => (item=Department-xyc CT absent) 
ok: [localhost] => (item=Department-xyc GT present) => 
  msg: |-
    error: 5
    metric: duplicated_lines
    op: GT
    gateName: Department-xyc
    • 1
  2. Best Answer

    这里的问题是，item循环中没有一个值。如果您执行一些简单的诊断，如下所示：

    - loop: "{{ qualitygate | subelements('operators', 'skip_missing=True') }}"
  debug:
    msg: "{{ item }}"

    你会看到它item看起来像这样：

    [
    {
        "operators": [
            {
                "error": 1,
                "metric": "coverage",
                "operator": "CT",
                "state": "present"
            }
        ],
        "qualitygate_name": "QA-dev"
    },
    {
        "error": 1,
        "metric": "coverage",
        "operator": "CT",
        "state": "present"
    }
]

    文档中对此进行了描述：

    ansible.builtin.subelements 过滤器生成对象和该对象的子元素值的乘积，类似于 ansible.builtin.subelements 查找。这允许您指定要在模板中使用的单个子元素。例如，此表达式：

    您希望在条件中使用第二个值item（对于每次迭代，它代表来自其中一个列表的值operators）。这样会得到类似这样的结果：

    - ansible.builtin.uri:
    url: "{{ protocol }}://{{ server_fqdn }}/api/qualitygates/create_condition"
    user: "{{ token }}"
    method: POST
    body_format: form-urlencoded
    body:
        error: "{{ item.1.error }}"
        metric: "{{ item.1.metric }}"
        gateName: "{{ item.0.qualitygate_name }}"
        op: "{{ item.1.operator }}"
  loop: "{{ qualitygate | subelements('operators', 'skip_missing=True') }}"
  when: item.1.state == "present"

    如果我们将所有内容都包装在一个debug任务中，如下所示：

    - debug:
    msg:
      ansible.builtin.uri:
        url: "{{ protocol }}://{{ server_fqdn }}/api/qualitygates/create_condition"
        user: "{{ token }}"
        method: POST
        body_format: form-urlencoded
        body:
          error: "{{ item.1.error }}"
          metric: "{{ item.1.metric }}"
          gateName: "{{ item.0.qualitygate_name }}"
          op: "{{ item.1.operator }}"
  loop: "{{ qualitygate | subelements('operators', 'skip_missing=True') }}"
  when: item.1.state == "present"

    这给了我们：

    TASK [debug] **********************************************************************************************************************************************
ok: [localhost] => (item=[{'qualitygate_name': 'QA-dev', 'operators': [{'metric': 'coverage', 'operator': 'CT', 'error': 1, 'state': 'present'}]}, {'metric': 'coverage', 'operator': 'CT', 'error': 1, 'state': 'present'}]) => {
    "msg": {
        "ansible.builtin.uri": {
            "body": {
                "error": "1",
                "gateName": "QA-dev",
                "metric": "coverage",
                "op": "CT"
            },
            "body_format": "form-urlencoded",
            "method": "POST",
            "url": "https://www.example.com/api/qualitygates/create_condition",
            "user": "mytoken"
        }
    }
}
skipping: [localhost] => (item=[{'qualitygate_name': 'Department-xyc', 'operators': [{'metric': 'coverage', 'operator': 'CT', 'error': 10, 'state': 'absent'}, {'metric': 'duplicated_lines', 'operator': 'GT', 'error': 5, 'state': 'present'}]}, {'metric': 'coverage', 'operator': 'CT', 'error': 10, 'state': 'absent'}])
ok: [localhost] => (item=[{'qualitygate_name': 'Department-xyc', 'operators': [{'metric': 'coverage', 'operator': 'CT', 'error': 10, 'state': 'absent'}, {'metric': 'duplicated_lines', 'operator': 'GT', 'error': 5, 'state': 'present'}]}, {'metric': 'duplicated_lines', 'operator': 'GT', 'error': 5, 'state': 'present'}]) => {
    "msg": {
        "ansible.builtin.uri": {
            "body": {
                "error": "5",
                "gateName": "Department-xyc",
                "metric": "duplicated_lines",
                "op": "GT"
            },
            "body_format": "form-urlencoded",
            "method": "POST",
            "url": "https://www.example.com/api/qualitygates/create_condition",
            "user": "mytoken"
        }
    }
}

    我认为这正是你想要的。

    • 1

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