Add Google Domains component (#9996)

* Add Google Domains component

* Fixes for hound

* Add Google Domains tests

* Fixes for hound

* Clean up Google Domains

* Add timeout to Google Domains

* Remove whitespace from blank lines

* Update google_domains.py

* Update google_domains.py

homeassistant/components/google_domains.py

@@ -0,0 +1,94 @@
+"""
+Integrate with Google Domains.
+
+For more details about this component, please refer to the documentation at
+https://home-assistant.io/components/google_domains/
+"""
+import aiohttp
+import async_timeout
+import asyncio
+import logging
+from datetime import timedelta
+
+import voluptuous as vol
+
+import homeassistant.helpers.config_validation as cv
+from homeassistant.const import (
+    CONF_DOMAIN, CONF_PASSWORD, CONF_TIMEOUT, CONF_USERNAME)
+
+_LOGGER = logging.getLogger(__name__)
+
+DOMAIN = 'google_domains'
+
+INTERVAL = timedelta(minutes=5)
+
+DEFAULT_TIMEOUT = 10
+
+UPDATE_URL = 'https://{}:{}@domains.google.com/nic/update'
+
+CONFIG_SCHEMA = vol.Schema({
+    DOMAIN: vol.Schema({
+        vol.Required(CONF_DOMAIN): cv.string,
+        vol.Required(CONF_USERNAME): cv.string,
+        vol.Required(CONF_PASSWORD): cv.string,
+        vol.Optional(CONF_TIMEOUT, default=DEFAULT_TIMEOUT): cv.positive_int,
+    })
+}, extra=vol.ALLOW_EXTRA)
+
+
+@asyncio.coroutine
+def async_setup(hass, config):
+    """Initialize the Google Domains component."""
+    domain = config[DOMAIN].get(CONF_DOMAIN)
+    user = config[DOMAIN].get(CONF_USERNAME)
+    password = config[DOMAIN].get(CONF_PASSWORD)
+    timeout = config[DOMAIN].get(CONF_TIMEOUT)
+
+    session = hass.helpers.aiohttp_client.async_get_clientsession()
+
+    result = yield from _update_google_domains(
+        hass, session, domain, user, password, timeout)
+
+    if not result:
+        return False
+
+    @asyncio.coroutine
+    def update_domain_interval(now):
+        """Update the Google Domains entry."""
+        yield from _update_google_domains(
+            hass, session, domain, user, password, timeout)
+
+    hass.helpers.event.async_track_time_interval(
+        update_domain_interval, INTERVAL)
+
+    return True
+
+
+@asyncio.coroutine
+def _update_google_domains(hass, session, domain, user, password, timeout):
+    """Update Google Domains."""
+    url = UPDATE_URL.format(user, password)
+
+    params = {
+        'hostname': domain
+    }
+
+    try:
+        with async_timeout.timeout(timeout, loop=hass.loop):
+            resp = yield from session.get(url, params=params)
+            body = yield from resp.text()
+
+            if body.startswith('good') or body.startswith('nochg'):
+                return True
+
+            _LOGGER.warning('Updating Google Domains failed: %s => %s',
+                            domain, body)
+
+    except aiohttp.ClientError:
+        _LOGGER.warning("Can't connect to Google Domains API")
+
+    except asyncio.TimeoutError:
+        _LOGGER.warning("Timeout from Google Domains API for domain: %s",
+                        domain)
+
+    return False

tests/components/test_google_domains.py

@@ -0,0 +1,74 @@
+"""Test the Google Domains component."""
+import asyncio
+from datetime import timedelta
+
+import pytest
+
+from homeassistant.setup import async_setup_component
+from homeassistant.components import google_domains
+from homeassistant.util.dt import utcnow
+
+from tests.common import async_fire_time_changed
+
+DOMAIN = 'test.example.com'
+USERNAME = 'abc123'
+PASSWORD = 'xyz789'
+
+UPDATE_URL = google_domains.UPDATE_URL.format(USERNAME, PASSWORD)
+
+
+@pytest.fixture
+def setup_google_domains(hass, aioclient_mock):
+    """Fixture that sets up NamecheapDNS."""
+    aioclient_mock.get(UPDATE_URL, params={
+        'hostname': DOMAIN
+    }, text='ok 0.0.0.0')
+
+    hass.loop.run_until_complete(async_setup_component(
+        hass, google_domains.DOMAIN, {
+            'google_domains': {
+                'domain': DOMAIN,
+                'username': USERNAME,
+                'password': PASSWORD,
+            }
+        }))
+
+
+@asyncio.coroutine
+def test_setup(hass, aioclient_mock):
+    """Test setup works if update passes."""
+    aioclient_mock.get(UPDATE_URL, params={
+        'hostname': DOMAIN
+    }, text='nochg 0.0.0.0')
+
+    result = yield from async_setup_component(hass, google_domains.DOMAIN, {
+        'google_domains': {
+            'domain': DOMAIN,
+            'username': USERNAME,
+            'password': PASSWORD
+        }
+    })
+    assert result
+    assert aioclient_mock.call_count == 1
+
+    async_fire_time_changed(hass, utcnow() + timedelta(minutes=5))
+    yield from hass.async_block_till_done()
+    assert aioclient_mock.call_count == 2
+
+
+@asyncio.coroutine
+def test_setup_fails_if_update_fails(hass, aioclient_mock):
+    """Test setup fails if first update fails."""
+    aioclient_mock.get(UPDATE_URL, params={
+        'hostname': DOMAIN
+    }, text='nohost')
+
+    result = yield from async_setup_component(hass, google_domains.DOMAIN, {
+        'google_domains': {
+            'domain': DOMAIN,
+            'username': USERNAME,
+            'password': PASSWORD
+        }
+    })
+    assert not result
+    assert aioclient_mock.call_count == 1