替换dict列表中的值

Question

我正在尝试将键"extension_last_heartbeat_time“(date)的值替换为这个dicts列表中的静态字符串"”

[
        {
            "vcenter": "vcenter-A",
            "vcenter_extension_info": [
                {
                    "extension_company": "VMware Inc.",
                    "extension_key": "com.vmware.vim.sms",
                    "extension_label": "VMware vCenter Storage Monitoring Service",
                    "extension_last_heartbeat_time": "2020-11-03T09:05:41.676497+00:00",
                    "extension_type": "",
                    "extension_version": "5.5"
                },
                {
                    "extension_company": "VMware Inc.",
                    "extension_key": "com.vmware.vim.vsm",
                    "extension_last_heartbeat_time": "2020-11-03T09:05:41.678007+00:00",
                    "extension_type": "",
                    "extension_version": "6.5"
                },
                {
                    "extension_company": null,
                    "extension_key": "VirtualCenter",
                    "extension_last_heartbeat_time": "2020-11-03T09:05:41.684018+00:00",
                    "extension_type": "",
                    "extension_version": "1.0"
                }
            ]
        },
        {
            "vcenter": "vcenter-B",
            "vcenter_extension_info": [
                {
                    "extension_company": "VMware Inc.",
                    "extension_key": "com.vmware.vim.sms",
                    "extension_last_heartbeat_time": "2020-08-17T13:12:10.529370+00:00",
                    "extension_type": "",
                    "extension_version": "5.5"
                },
                {
                    "extension_company": "VMware Inc.",
                    "extension_key": "com.vmware.vim.vsm",
                    "extension_last_heartbeat_time": "2020-08-17T13:12:10.530946+00:00",
                    "extension_type": "",
                    "extension_version": "6.5"
                },
                {
                    "extension_company": null,
                    "extension_key": "VirtualCenter",
                    "extension_last_heartbeat_time": "2020-08-17T13:12:10.537281+00:00",
                    "extension_version": "1.0"
                }
            ]
        }
]

我试过：

'0-9{4}-0-9{2}-0-9{2}T0-9{2}:0-9{2}:0-9{2}.*'，

• 名称:匿名上一次心跳时间set_fact: dict：“{ dict
• map(‘regex_
• ’， '')列表}”

但是它删除了大部分数据

Answer 1

Jinja2数据结构是“活动的”，因此它们在所有jinja2评估上下文中都会发生变异。诀窍是(至少在这篇文章中) set语句创建了新的局部变量，并且没有按照用户预期的方式分配，从而导致了一些愚蠢。这就是为什么我们必须使用dict.update作为一个“覆盖这个切分成员”的工作。

- set_fact:
    # you didn't say what variable contained that outermost `list[dict]`
    # so change that as needed
    vcenter_data: |
        {%- for i in vcenter_data -%}
        {%-   for e in i.vcenter_extension_info -%}
        {%-     set _ = e.update({
            "extension_last_heartbeat_time": new_extension_last_heartbeat_time}) -%}
        {%-   endfor -%}
        {%- endfor -%}
        {{ vcenter_data }}
  vars:
    new_extension_last_heartbeat_time: '1111-22-33'

Answer 2

解决这一问题的方法之一是使用regex_replace。如果数据位于变量"vcenter_data“中，那么解决方案可能如下所示：

    - name: anonymize instance uuid
      set_fact:
        vcenter_data: "{{ vcenter_data| regex_replace('[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}', '<INSTANCE_UUID>') }}"