Retry keyset cloud (#12270)

* Use less threads in helpers.event tests

* Add helpers.event.async_call_later

* Cloud: retry fetching keyset

homeassistant/components/cloud/__init__.py

@@ -16,8 +16,7 @@ import voluptuous as vol
 
 from homeassistant.const import (
     EVENT_HOMEASSISTANT_START, CONF_REGION, CONF_MODE, CONF_NAME, CONF_TYPE)
-from homeassistant.helpers import entityfilter
-from homeassistant.helpers import config_validation as cv
+from homeassistant.helpers import entityfilter, config_validation as cv
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.util import dt as dt_util
 from homeassistant.components.alexa import smart_home as alexa_sh
@@ -105,12 +104,7 @@ def async_setup(hass, config):
     )
 
     cloud = hass.data[DOMAIN] = Cloud(hass, **kwargs)
-
-    success = yield from cloud.initialize()
-
-    if not success:
-        return False
-
+    hass.bus.async_listen_once(EVENT_HOMEASSISTANT_START, cloud.async_start)
     yield from http_api.async_setup(hass)
     return True
 
@@ -192,19 +186,6 @@ class Cloud:
 
         return self._gactions_config
 
-    @asyncio.coroutine
-    def initialize(self):
-        """Initialize and load cloud info."""
-        jwt_success = yield from self._fetch_jwt_keyset()
-
-        if not jwt_success:
-            return False
-
-        self.hass.bus.async_listen_once(
-            EVENT_HOMEASSISTANT_START, self._start_cloud)
-
-        return True
-
     def path(self, *parts):
         """Get config path inside cloud dir.
 
@@ -234,8 +215,18 @@ class Cloud:
                 'refresh_token': self.refresh_token,
             }, indent=4))
 
-    def _start_cloud(self, event):
+    @asyncio.coroutine
+    def async_start(self, _):
         """Start the cloud component."""
+        success = yield from self._fetch_jwt_keyset()
+
+        # Fetching keyset can fail if internet is not up yet.
+        if not success:
+            self.hass.helpers.async_call_later(5, self.async_start)
+            return
+
+        def load_config():
+            """Load config."""
             # Ensure config dir exists
             path = self.hass.config.path(CONFIG_DIR)
             if not os.path.isdir(path):
@@ -243,10 +234,15 @@ class Cloud:
 
             user_info = self.user_info_path
             if not os.path.isfile(user_info):
-            return
+                return None
 
             with open(user_info, 'rt') as file:
-            info = json.loads(file.read())
+                return json.loads(file.read())
+
+        info = yield from self.hass.async_add_job(load_config)
+
+        if info is None:
+            return
 
         # Validate tokens
         try:

homeassistant/helpers/event.py

@@ -1,4 +1,5 @@
 """Helpers for listening to events."""
+from datetime import timedelta
 import functools as ft
 
 from homeassistant.loader import bind_hass
@@ -219,6 +220,14 @@ track_point_in_utc_time = threaded_listener_factory(
     async_track_point_in_utc_time)
 
 
+@callback
+@bind_hass
+def async_call_later(hass, delay, action):
+    """Add a listener that is called in <delay>."""
+    return async_track_point_in_utc_time(
+        hass, action, dt_util.utcnow() + timedelta(seconds=delay))
+
+
 @callback
 @bind_hass
 def async_track_time_interval(hass, action, interval):

tests/components/cloud/test_http_api.py

@@ -14,8 +14,8 @@ from tests.common import mock_coro
 @pytest.fixture
 def cloud_client(hass, test_client):
     """Fixture that can fetch from the cloud client."""
-    with patch('homeassistant.components.cloud.Cloud.initialize',
-               return_value=mock_coro(True)):
+    with patch('homeassistant.components.cloud.Cloud.async_start',
+               return_value=mock_coro()):
         hass.loop.run_until_complete(async_setup_component(hass, 'cloud', {
             'cloud': {
                 'mode': 'development',

tests/components/cloud/test_init.py

@@ -87,7 +87,7 @@ def test_initialize_loads_info(mock_os, hass):
 
     with patch('homeassistant.components.cloud.open', mopen, create=True), \
             patch('homeassistant.components.cloud.Cloud._decode_claims'):
-        cl._start_cloud(None)
+        yield from cl.async_start(None)
 
     assert cl.id_token == 'test-id-token'
     assert cl.access_token == 'test-access-token'

tests/components/cloud/test_iot.py

@@ -266,8 +266,8 @@ def test_handler_alexa(hass):
     hass.states.async_set(
         'switch.test2', 'on', {'friendly_name': "Test switch 2"})
 
-    with patch('homeassistant.components.cloud.Cloud.initialize',
-               return_value=mock_coro(True)):
+    with patch('homeassistant.components.cloud.Cloud.async_start',
+               return_value=mock_coro()):
         setup = yield from async_setup_component(hass, 'cloud', {
             'cloud': {
                 'alexa': {
@@ -309,8 +309,8 @@ def test_handler_google_actions(hass):
     hass.states.async_set(
         'switch.test2', 'on', {'friendly_name': "Test switch 2"})
 
-    with patch('homeassistant.components.cloud.Cloud.initialize',
-               return_value=mock_coro(True)):
+    with patch('homeassistant.components.cloud.Cloud.async_start',
+               return_value=mock_coro()):
         setup = yield from async_setup_component(hass, 'cloud', {
             'cloud': {
                 'google_actions': {

tests/helpers/test_event.py

@@ -7,10 +7,12 @@ from datetime import datetime, timedelta
 from astral import Astral
 import pytest
 
+from homeassistant.core import callback
 from homeassistant.setup import setup_component
 import homeassistant.core as ha
 from homeassistant.const import MATCH_ALL
 from homeassistant.helpers.event import (
+    async_call_later,
     track_point_in_utc_time,
     track_point_in_time,
     track_utc_time_change,
@@ -52,7 +54,7 @@ class TestEventHelpers(unittest.TestCase):
         runs = []
 
         track_point_in_utc_time(
-            self.hass, lambda x: runs.append(1), birthday_paulus)
+            self.hass, callback(lambda x: runs.append(1)), birthday_paulus)
 
         self._send_time_changed(before_birthday)
         self.hass.block_till_done()
@@ -68,14 +70,14 @@ class TestEventHelpers(unittest.TestCase):
         self.assertEqual(1, len(runs))
 
         track_point_in_time(
-            self.hass, lambda x: runs.append(1), birthday_paulus)
+            self.hass, callback(lambda x: runs.append(1)), birthday_paulus)
 
         self._send_time_changed(after_birthday)
         self.hass.block_till_done()
         self.assertEqual(2, len(runs))
 
         unsub = track_point_in_time(
-            self.hass, lambda x: runs.append(1), birthday_paulus)
+            self.hass, callback(lambda x: runs.append(1)), birthday_paulus)
         unsub()
 
         self._send_time_changed(after_birthday)
@@ -642,3 +644,22 @@ class TestEventHelpers(unittest.TestCase):
         self._send_time_changed(datetime(2014, 5, 2, 0, 0, 0))
         self.hass.block_till_done()
         self.assertEqual(0, len(specific_runs))
+
+
+@asyncio.coroutine
+def test_async_call_later(hass):
+    """Test calling an action later."""
+    def action(): pass
+    now = datetime(2017, 12, 19, 15, 40, 0, tzinfo=dt_util.UTC)
+
+    with patch('homeassistant.helpers.event'
+               '.async_track_point_in_utc_time') as mock, \
+            patch('homeassistant.util.dt.utcnow', return_value=now):
+        remove = async_call_later(hass, 3, action)
+
+    assert len(mock.mock_calls) == 1
+    p_hass, p_action, p_point = mock.mock_calls[0][1]
+    assert hass is hass
+    assert p_action is action
+    assert p_point == now + timedelta(seconds=3)
+    assert remove is mock()