Add input_boolean reload service (#29379)

* Add input_boolean reload service.

* Add reload test.

* Address comments.

Register reload service as an admin service
Setup platform even if there're no entities

homeassistant/components/input_boolean/__init__.py

@@ -6,16 +6,18 @@ import voluptuous as vol
 from homeassistant.const import (
     CONF_ICON,
     CONF_NAME,
+    SERVICE_RELOAD,
+    SERVICE_TOGGLE,
     SERVICE_TURN_OFF,
     SERVICE_TURN_ON,
-    SERVICE_TOGGLE,
     STATE_ON,
 )
-from homeassistant.loader import bind_hass
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import ToggleEntity
 from homeassistant.helpers.entity_component import EntityComponent
 from homeassistant.helpers.restore_state import RestoreEntity
+import homeassistant.helpers.service
+from homeassistant.loader import bind_hass
 
 DOMAIN = "input_boolean"
 
@@ -41,6 +43,8 @@ CONFIG_SCHEMA = vol.Schema(
     extra=vol.ALLOW_EXTRA,
 )
 
+RELOAD_SERVICE_SCHEMA = vol.Schema({})
+
 
 @bind_hass
 def is_on(hass, entity_id):
@@ -52,6 +56,39 @@ async def async_setup(hass, config):
     """Set up an input boolean."""
     component = EntityComponent(_LOGGER, DOMAIN, hass)
 
+    entities = await _async_process_config(config)
+
+    async def reload_service_handler(service_call):
+        """Remove all input booleans and load new ones from config."""
+        conf = await component.async_prepare_reload()
+        if conf is None:
+            return
+        new_entities = await _async_process_config(conf)
+        if new_entities:
+            await component.async_add_entities(new_entities)
+
+    homeassistant.helpers.service.async_register_admin_service(
+        hass,
+        DOMAIN,
+        SERVICE_RELOAD,
+        reload_service_handler,
+        schema=RELOAD_SERVICE_SCHEMA,
+    )
+
+    component.async_register_entity_service(SERVICE_TURN_ON, {}, "async_turn_on")
+
+    component.async_register_entity_service(SERVICE_TURN_OFF, {}, "async_turn_off")
+
+    component.async_register_entity_service(SERVICE_TOGGLE, {}, "async_toggle")
+
+    if entities:
+        await component.async_add_entities(entities)
+
+    return True
+
+
+async def _async_process_config(config):
+    """Process config and create list of entities."""
     entities = []
 
     for object_id, cfg in config[DOMAIN].items():
@@ -64,17 +101,7 @@ async def async_setup(hass, config):
 
         entities.append(InputBoolean(object_id, name, initial, icon))
 
-    if not entities:
-        return False
-
-    component.async_register_entity_service(SERVICE_TURN_ON, {}, "async_turn_on")
-
-    component.async_register_entity_service(SERVICE_TURN_OFF, {}, "async_turn_off")
-
-    component.async_register_entity_service(SERVICE_TOGGLE, {}, "async_toggle")
-
-    await component.async_add_entities(entities)
-    return True
+    return entities
 
 
 class InputBoolean(ToggleEntity, RestoreEntity):

homeassistant/components/input_boolean/services.yaml

@@ -10,3 +10,6 @@ turn_on:
   description: Turns on an input boolean.
   fields:
     entity_id: {description: Entity id of the input boolean to turn on., example: input_boolean.notify_alerts}
+reload:
+  description: Reload the input_boolean configuration.
+

tests/components/input_boolean/test_init.py

@@ -2,20 +2,22 @@
 # pylint: disable=protected-access
 import asyncio
 import logging
+from unittest.mock import patch
 
-from homeassistant.core import CoreState, State, Context
-from homeassistant.setup import async_setup_component
-from homeassistant.components.input_boolean import is_on, CONF_INITIAL, DOMAIN
+from homeassistant.components.input_boolean import CONF_INITIAL, DOMAIN, is_on
 from homeassistant.const import (
-    STATE_ON,
-    STATE_OFF,
     ATTR_ENTITY_ID,
     ATTR_FRIENDLY_NAME,
     ATTR_ICON,
+    SERVICE_RELOAD,
     SERVICE_TOGGLE,
     SERVICE_TURN_OFF,
     SERVICE_TURN_ON,
+    STATE_OFF,
+    STATE_ON,
 )
+from homeassistant.core import Context, CoreState, State
+from homeassistant.setup import async_setup_component
 
 from tests.common import mock_component, mock_restore_cache
 
@@ -165,3 +167,71 @@ async def test_input_boolean_context(hass, hass_admin_user):
     assert state2 is not None
     assert state.state != state2.state
     assert state2.context.user_id == hass_admin_user.id
+
+
+async def test_reload(hass, hass_admin_user):
+    """Test reload service."""
+    count_start = len(hass.states.async_entity_ids())
+
+    _LOGGER.debug("ENTITIES @ start: %s", hass.states.async_entity_ids())
+
+    assert await async_setup_component(
+        hass,
+        DOMAIN,
+        {
+            DOMAIN: {
+                "test_1": None,
+                "test_2": {"name": "Hello World", "icon": "mdi:work", "initial": True},
+            }
+        },
+    )
+
+    _LOGGER.debug("ENTITIES: %s", hass.states.async_entity_ids())
+
+    assert count_start + 2 == len(hass.states.async_entity_ids())
+
+    state_1 = hass.states.get("input_boolean.test_1")
+    state_2 = hass.states.get("input_boolean.test_2")
+    state_3 = hass.states.get("input_boolean.test_3")
+
+    assert state_1 is not None
+    assert state_2 is not None
+    assert state_3 is None
+    assert STATE_ON == state_2.state
+
+    with patch(
+        "homeassistant.config.load_yaml_config_file",
+        autospec=True,
+        return_value={
+            DOMAIN: {
+                "test_2": {
+                    "name": "Hello World reloaded",
+                    "icon": "mdi:work_reloaded",
+                    "initial": False,
+                },
+                "test_3": None,
+            }
+        },
+    ):
+        with patch("homeassistant.config.find_config_file", return_value=""):
+            await hass.services.async_call(
+                DOMAIN,
+                SERVICE_RELOAD,
+                blocking=True,
+                context=Context(user_id=hass_admin_user.id),
+            )
+            await hass.async_block_till_done()
+
+    assert count_start + 2 == len(hass.states.async_entity_ids())
+
+    state_1 = hass.states.get("input_boolean.test_1")
+    state_2 = hass.states.get("input_boolean.test_2")
+    state_3 = hass.states.get("input_boolean.test_3")
+
+    assert state_1 is None
+    assert state_2 is not None
+    assert state_3 is not None
+
+    assert STATE_OFF == state_2.state
+    assert "Hello World reloaded" == state_2.attributes.get(ATTR_FRIENDLY_NAME)
+    assert "mdi:work_reloaded" == state_2.attributes.get(ATTR_ICON)