Question

我正在写一部剧本来收集某些网络设备中的数据，但是现在我很难过滤这些数据。我只需要某些键的值即可。

这是我得到的完整数据：

       "license": {
    "response": {
        "@status": "success",
        "result": {
            "licenses": {
                "entry": [
                    {
                        "authcode": "11111111",
                        "description": "Feature A",
                        "expired": "no",
                        "expires": "September 10, 2020",
                        "feature": "Feature A",
                        "issued": "September 10, 2016",
                        "serial": "96765555555"
                    },
                    {
                        "authcode": "222222222",
                        "description": "Feature B",
                        "expired": "no",
                        "expires": "September 14, 2020",
                        "feature": "Feature B",
                        "issued": "September 14, 2016",
                        "serial": "77777777777"

从这开始，我只需要功能并过期信息，如下所示：

                        "expires": "September 10, 2020",
                        "feature": "Feature A",
                        "expires": "September 14, 2020",
                        "feature": "Feature B",

我正在尝试使用如下所示的正则表达式，但是我无法获得完整的值，并且它无法仅将第一个键（即两个具有相同名称的键）行进：

set_fact：功能：“ {{（license_output.stdout | regex_search（'feature（。+？）'））}}”” 过期：“ {{（license_output.stdout | regex_search（'expires（。+？）'））}}”
调试：讯息：“ {{功能}}” 信息：“ {{过期}}”

我当前的代码：

set_fact：功能：“ {{（license_output.stdout | regex_search（'feature（。+？）'））}}}”

过期：“ {{（license_output.stdout | regex_search（'expires（。+？）'））}}“
调试：讯息：“ {{功能}}” 信息：“ {{过期}}”

这是预期的结果：

                        "expires": "September 10, 2020",
                        "feature": "Feature A",
                        "expires": "September 14, 2020",
                        "feature": "Feature B",

Answer 1

似乎您在license_output.stdout中得到了JSON响应。当您可以直接在json数据中查找值时，没有理由尝试使用正则表达式进行解析。考虑：

---
- hosts: localhost
  gather_facts: false
  vars:
    license_output:
      stdout: |
        {
          "license": {
            "response": {
              "@status": "success",
              "result": {
                "licenses": {
                  "entry": [
                    {
                      "authcode": "11111111",
                      "description": "Feature A",
                      "expired": "no",
                      "expires": "September 10, 2020",
                      "feature": "Feature A",
                      "issued": "September 10, 2016",
                      "serial": "96765555555"
                    },
                    {
                      "authcode": "222222222",
                      "description": "Feature B",
                      "expired": "no",
                      "expires": "September 14, 2020",
                      "feature": "Feature B",
                      "issued": "September 14, 2016",
                      "serial": "77777777777"
                    }
                  ]
                }
              }
            }
          }
        }

  tasks:
    - debug:
        msg:
          feature: "{{ item.feature }}"
          expires: "{{ item.expires }}"
      loop: "{{ (license_output.stdout|from_json).license.response.result.licenses.entry }}"

这将输出：

    TASK [debug] **********************************************************************************
    ok: [localhost] => (item=Feature A) => {
            "msg": {
                    "expires": "September 10, 2020", 
                    "feature": "Feature A"
            }
    }
    ok: [localhost] => (item=Feature B) => {
            "msg": {
                    "expires": "September 14, 2020", 
                    "feature": "Feature B"
            }
    }

不清楚要使用这些值做什么。您在示例中使用的是set_fact，但是由于具有多种功能，因此不能使用名为feature或expires的单个变量。一种可能性是这样的：

- set_fact:
    "expires_{{ item.feature.lower().replace(' ', '_') }}": "{{ item.expires }}"
  loop: "{{ (license_output.stdout|from_json).license.response.result.licenses.entry }}"
  loop_control:
    label: "{{ item.feature }}"

- debug:
    msg: "Feature A expires on {{ expires_feature_a }}"

这将创建名称为expires_feature_a和expires_feature_b的变量。上面的示例将输出：

TASK [debug] **********************************************************************************************************************************************************************************
ok: [localhost] => {
    "msg": "Feature A expires on September 10, 2020"
}

另一个例子可能是建立一个字典，将特征名称映射到失效日期：

- set_fact:
    features: "{{ features|default({})|combine({item.feature: item.expires}) }}"
  loop: "{{ (license_output.stdout|from_json).license.response.result.licenses.entry }}"
  loop_control:
    label: "{{ item.feature }}"

- debug:
    msg: "Feature {{ item.0 }} expires on {{ item.1 }}"
  loop: "{{ features.items() }}"

这将输出：

TASK [debug] **********************************************************************************************************************************************************************************
ok: [localhost] => (item=[u'Feature B', u'September 14, 2020']) => {
    "msg": "Feature Feature B expires on September 14, 2020"
}
ok: [localhost] => (item=[u'Feature A', u'September 10, 2020']) => {
    "msg": "Feature Feature A expires on September 10, 2020"
}

Ansible剧本，可从某些字典键中获取价值

1 个答案: