3c-fetch-ip-addresses-ignore-exceptions.py

from collections import namedtuple
import time
import asyncio
import aiohttp

Service = namedtuple('Service', ('name', 'url', 'ip_attr'))

SERVICES = (
    Service('ipify', 'https://api.ipify.org?format=json', 'ip'),
    Service('ip-api', 'http://ip-api.com/json', 'this-is-not-an-attr'),
    Service('borken', 'http://no-way-this-is-going-to-work.com/json', 'ip')
)

async def aiohttp_get_json(url):
    async with aiohttp.ClientSession() as session:
        async with session.get(url) as response:
            return await response.json()


async def fetch_ip(service):
    start = time.time()
    print('Fetching IP from {}'.format(service.name))

    try:
        json_response = await aiohttp_get_json(service.url)
    except:
        print('{} is unresponsive'.format(service.name))
    else:
        ip = json_response[service.ip_attr]

        print('{} finished with result: {}, took: {:.2f} seconds'.format(
            service.name, ip, time.time() - start))


async def main():
    futures = [fetch_ip(service) for service in SERVICES]
    await asyncio.wait(futures)  # intentionally ignore results


asyncio.run(main())