Support longer-than-60-second scan_interval and interval_seconds (#5147)

* Update scan_interval and interval_seconds max to 1 day vs. 60 seconds

* Format fixes

* Add docstring on unittest.

* Added and implemented new async_track_time_interval helper.

* Format fixes, removed unused import.

* Undid whoops on unsub_polling.

* Updated unit tests for scan_interval.

* Added unit test for track_time_interval.

* Allow other forms of time interval input for scan_interval and interval_seconds

homeassistant/components/device_tracker/__init__.py

@@ -24,6 +24,7 @@ from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers import config_per_platform, discovery
 from homeassistant.helpers.entity import Entity
+from homeassistant.helpers.event import async_track_time_interval
 from homeassistant.helpers.typing import GPSType, ConfigType, HomeAssistantType
 import homeassistant.helpers.config_validation as cv
 import homeassistant.util as util
@@ -71,7 +72,7 @@ ATTR_BATTERY = 'battery'
 ATTR_ATTRIBUTES = 'attributes'
 
 PLATFORM_SCHEMA = cv.PLATFORM_SCHEMA.extend({
-    vol.Optional(CONF_SCAN_INTERVAL): cv.positive_int,  # seconds
+    vol.Optional(CONF_SCAN_INTERVAL): cv.time_period,
     vol.Optional(CONF_TRACK_NEW, default=DEFAULT_TRACK_NEW): cv.boolean,
     vol.Optional(CONF_CONSIDER_HOME,
                  default=timedelta(seconds=DEFAULT_CONSIDER_HOME)): vol.All(
@@ -639,8 +640,9 @@ def async_setup_scanner_platform(hass: HomeAssistantType, config: ConfigType,
                 seen.add(mac)
             hass.async_add_job(async_see_device(mac=mac, host_name=host_name))
 
-    async_track_utc_time_change(
+    async_track_time_interval(
-        hass, async_device_tracker_scan, second=range(0, 60, interval))
+        hass, async_device_tracker_scan,
+        timedelta(seconds=interval))
 
     hass.async_add_job(async_device_tracker_scan, None)
 

homeassistant/helpers/config_validation.py

@@ -405,8 +405,7 @@ def key_dependency(key, dependency):
 
 PLATFORM_SCHEMA = vol.Schema({
     vol.Required(CONF_PLATFORM): string,
-    vol.Optional(CONF_SCAN_INTERVAL):
+    vol.Optional(CONF_SCAN_INTERVAL): time_period
-        vol.All(vol.Coerce(int), vol.Range(min=1)),
 }, extra=vol.ALLOW_EXTRA)
 
 EVENT_SCHEMA = vol.Schema({

homeassistant/helpers/entity_component.py

@@ -1,5 +1,6 @@
 """Helpers for components that manage entities."""
 import asyncio
+from datetime import timedelta
 
 from homeassistant import config as conf_util
 from homeassistant.bootstrap import (
@@ -12,7 +13,7 @@ from homeassistant.exceptions import HomeAssistantError
 from homeassistant.loader import get_component
 from homeassistant.helpers import config_per_platform, discovery
 from homeassistant.helpers.entity import async_generate_entity_id
-from homeassistant.helpers.event import async_track_utc_time_change
+from homeassistant.helpers.event import async_track_time_interval
 from homeassistant.helpers.service import extract_entity_ids
 from homeassistant.util.async import (
     run_callback_threadsafe, run_coroutine_threadsafe)
@@ -324,9 +325,10 @@ class EntityPlatform(object):
                    in self.platform_entities):
             return
 
-        self._async_unsub_polling = async_track_utc_time_change(
+        self._async_unsub_polling = async_track_time_interval(
             self.component.hass, self._update_entity_states,
-            second=range(0, 60, self.scan_interval))
+            timedelta(seconds=self.scan_interval)
+        )
 
     @asyncio.coroutine
     def _async_process_entity(self, new_entity, update_before_add):

homeassistant/helpers/event.py

@@ -85,7 +85,7 @@ track_state_change = threaded_listener_factory(async_track_state_change)
 
 
 def async_track_point_in_time(hass, action, point_in_time):
-    """Add a listener that fires once after a spefic point in time."""
+    """Add a listener that fires once after a specific point in time."""
     utc_point_in_time = dt_util.as_utc(point_in_time)
 
     @callback
@@ -133,6 +133,33 @@ track_point_in_utc_time = threaded_listener_factory(
     async_track_point_in_utc_time)
 
 
+def async_track_time_interval(hass, action, interval):
+    """Add a listener that fires repetitively at every timedelta interval."""
+    def next_interval():
+        """Return the next interval."""
+        return dt_util.utcnow() + interval
+
+    @callback
+    def interval_listener(now):
+        """Called when when the interval has elapsed."""
+        nonlocal remove
+        remove = async_track_point_in_utc_time(
+            hass, interval_listener, next_interval())
+        hass.async_run_job(action, now)
+
+    remove = async_track_point_in_utc_time(
+        hass, interval_listener, next_interval())
+
+    def remove_listener():
+        """Remove interval listener."""
+        remove()
+
+    return remove_listener
+
+
+track_time_interval = threaded_listener_factory(async_track_time_interval)
+
+
 def async_track_sunrise(hass, action, offset=None):
     """Add a listener that will fire a specified offset from sunrise daily."""
     from homeassistant.components import sun

tests/helpers/test_entity_component.py

@@ -5,12 +5,15 @@ from collections import OrderedDict
 import logging
 import unittest
 from unittest.mock import patch, Mock
+from datetime import timedelta
 
 import homeassistant.core as ha
 import homeassistant.loader as loader
 from homeassistant.components import group
 from homeassistant.helpers.entity import Entity, generate_entity_id
-from homeassistant.helpers.entity_component import EntityComponent
+from homeassistant.helpers.entity_component import (
+    EntityComponent, DEFAULT_SCAN_INTERVAL)
+
 from homeassistant.helpers import discovery
 import homeassistant.util.dt as dt_util
 
@@ -106,7 +109,7 @@ class TestHelpersEntityComponent(unittest.TestCase):
         no_poll_ent.async_update.reset_mock()
         poll_ent.async_update.reset_mock()
 
-        fire_time_changed(self.hass, dt_util.utcnow().replace(second=0))
+        fire_time_changed(self.hass, dt_util.utcnow() + timedelta(seconds=20))
         self.hass.block_till_done()
 
         assert not no_poll_ent.async_update.called
@@ -123,7 +126,10 @@ class TestHelpersEntityComponent(unittest.TestCase):
         assert 1 == len(self.hass.states.entity_ids())
         ent2.update = lambda *_: component.add_entities([ent1])
 
-        fire_time_changed(self.hass, dt_util.utcnow().replace(second=0))
+        fire_time_changed(
+            self.hass, dt_util.utcnow() +
+            timedelta(seconds=DEFAULT_SCAN_INTERVAL)
+        )
         self.hass.block_till_done()
 
         assert 2 == len(self.hass.states.entity_ids())
@@ -311,7 +317,7 @@ class TestHelpersEntityComponent(unittest.TestCase):
             mock_setup.call_args[0]
 
     @patch('homeassistant.helpers.entity_component.'
-           'async_track_utc_time_change')
+           'async_track_time_interval')
     def test_set_scan_interval_via_config(self, mock_track):
         """Test the setting of the scan interval via configuration."""
         def platform_setup(hass, config, add_devices, discovery_info=None):
@@ -331,10 +337,10 @@ class TestHelpersEntityComponent(unittest.TestCase):
         })
 
         assert mock_track.called
-        assert [0, 30] == list(mock_track.call_args[1]['second'])
+        assert timedelta(seconds=30) == mock_track.call_args[0][2]
 
     @patch('homeassistant.helpers.entity_component.'
-           'async_track_utc_time_change')
+           'async_track_time_interval')
     def test_set_scan_interval_via_platform(self, mock_track):
         """Test the setting of the scan interval via platform."""
         def platform_setup(hass, config, add_devices, discovery_info=None):
@@ -355,7 +361,7 @@ class TestHelpersEntityComponent(unittest.TestCase):
         })
 
         assert mock_track.called
-        assert [0, 30] == list(mock_track.call_args[1]['second'])
+        assert timedelta(seconds=30) == mock_track.call_args[0][2]
 
     def test_set_entity_namespace_via_config(self):
         """Test setting an entity namespace."""

tests/helpers/test_event.py

@@ -15,6 +15,7 @@ from homeassistant.helpers.event import (
     track_utc_time_change,
     track_time_change,
     track_state_change,
+    track_time_interval,
     track_sunrise,
     track_sunset,
 )
@@ -187,6 +188,34 @@ class TestEventHelpers(unittest.TestCase):
         self.assertEqual(5, len(wildcard_runs))
         self.assertEqual(6, len(wildercard_runs))
 
+    def test_track_time_interval(self):
+        """Test tracking time interval."""
+        specific_runs = []
+
+        utc_now = dt_util.utcnow()
+        unsub = track_time_interval(
+            self.hass, lambda x: specific_runs.append(1),
+            timedelta(seconds=10)
+        )
+
+        self._send_time_changed(utc_now + timedelta(seconds=5))
+        self.hass.block_till_done()
+        self.assertEqual(0, len(specific_runs))
+
+        self._send_time_changed(utc_now + timedelta(seconds=13))
+        self.hass.block_till_done()
+        self.assertEqual(1, len(specific_runs))
+
+        self._send_time_changed(utc_now + timedelta(minutes=20))
+        self.hass.block_till_done()
+        self.assertEqual(2, len(specific_runs))
+
+        unsub()
+
+        self._send_time_changed(utc_now + timedelta(seconds=30))
+        self.hass.block_till_done()
+        self.assertEqual(2, len(specific_runs))
+
     def test_track_sunrise(self):
         """Test track the sunrise."""
         latitude = 32.87336