Ansible剧本-如何使用多个if条件为嵌套的循环编写代码？

Question

这是Python代码-我想在YAML和/或Jinja2的Ansible剧本中“编写相同的代码”（获得相同的结果），而无需使用外部模块。

arp_interfaces = {
    "3.3.3.3": "eth0",
    "4.4.4.4": "eth1",
}

route_interfaces = [
    {
        "interface": "eth0",
        "next_hop_ip": "3.3.3.3",
        "unreachable": ""
    },
    {
        "interface": "eth2",
        "next_hop_ip": "4.4.4.4",
        "unreachable": ""
    }
]

different_interfaces = {}
for arp_ip, arp_iface in arp_interfaces.items():
    for route in route_interfaces:
        if arp_ip == route['next_hop_ip']:
            if arp_iface != route['interface']:
                different_interfaces[arp_ip] = {"arp": arp_iface, "ip_route": route["interface"]}

print(different_interfaces)

输出：

C:\Python373\python.exe D:/projects/Python/python-cli/main.py
{'4.4.4.4': {'arp': 'eth1', 'ip_route': 'eth2'}}

Answer 1

以下任务

- set_fact:
    different_interfaces: "{{ different_interfaces|default({})|
                              combine({item.0.key: {'arp': item.0.value,
                                                    'ip_route': item.1.interface}})
                              }}"
  loop: "{{ arp_interfaces|dict2items|product(route_interfaces)|list }}"
  when:
    - item.0.key == item.1.next_hop_ip
    - item.0.value != item.1.interface
- debug:
    var: different_interfaces

给予

"different_interfaces": {
    "4.4.4.4": {
        "arp": "eth1", 
        "ip_route": "eth2"
    }
}