Add wait_for_trigger script action (#38075)

* Add wait_for_trigger script action

* Add tests

* Change script integration to use config validator

homeassistant/components/automation/__init__.py

@@ -88,7 +88,6 @@ _LOGGER = logging.getLogger(__name__)
 
 AutomationActionType = Callable[[HomeAssistant, TemplateVarsType], Awaitable[None]]
 
-
 _CONDITION_SCHEMA = vol.All(cv.ensure_list, [cv.CONDITION_SCHEMA])
 
 PLATFORM_SCHEMA = vol.All(

homeassistant/components/config/script.py

@@ -1,5 +1,6 @@
 """Provide configuration end points for scripts."""
 from homeassistant.components.script import DOMAIN, SCRIPT_ENTRY_SCHEMA
+from homeassistant.components.script.config import async_validate_config_item
 from homeassistant.config import SCRIPT_CONFIG_PATH
 from homeassistant.const import SERVICE_RELOAD
 import homeassistant.helpers.config_validation as cv
@@ -16,12 +17,13 @@ async def async_setup(hass):
 
     hass.http.register_view(
         EditKeyBasedConfigView(
-            "script",
+            DOMAIN,
             "config",
             SCRIPT_CONFIG_PATH,
             cv.slug,
             SCRIPT_ENTRY_SCHEMA,
             post_write_hook=hook,
+            data_validator=async_validate_config_item,
         )
     )
     return True

homeassistant/components/script/config.py

@@ -0,0 +1,50 @@
+"""Config validation helper for the script integration."""
+import asyncio
+
+import voluptuous as vol
+
+from homeassistant.config import async_log_exception
+from homeassistant.const import CONF_SEQUENCE
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.helpers import config_validation as cv
+from homeassistant.helpers.script import async_validate_action_config
+
+from . import DOMAIN, SCRIPT_ENTRY_SCHEMA
+
+
+async def async_validate_config_item(hass, config, full_config=None):
+    """Validate config item."""
+    config = SCRIPT_ENTRY_SCHEMA(config)
+    config[CONF_SEQUENCE] = await asyncio.gather(
+        *[
+            async_validate_action_config(hass, action)
+            for action in config[CONF_SEQUENCE]
+        ]
+    )
+
+    return config
+
+
+async def _try_async_validate_config_item(hass, object_id, config, full_config=None):
+    """Validate config item."""
+    try:
+        cv.slug(object_id)
+        config = await async_validate_config_item(hass, config, full_config)
+    except (vol.Invalid, HomeAssistantError) as ex:
+        async_log_exception(ex, DOMAIN, full_config or config, hass)
+        return None
+
+    return config
+
+
+async def async_validate_config(hass, config):
+    """Validate config."""
+    if DOMAIN in config:
+        validated_config = {}
+        for object_id, cfg in config[DOMAIN].items():
+            cfg = await _try_async_validate_config_item(hass, object_id, cfg, config)
+            if cfg is not None:
+                validated_config[object_id] = cfg
+        config[DOMAIN] = validated_config
+
+    return config

homeassistant/components/template/trigger.py

@@ -86,7 +86,9 @@ async def async_attach_trigger(
             value_template.extract_entities(),
         )
 
-    unsub = async_track_template(hass, value_template, template_listener)
+    unsub = async_track_template(
+        hass, value_template, template_listener, automation_info["variables"]
+    )
 
     @callback
     def async_remove():

homeassistant/const.py

@@ -180,6 +180,7 @@ CONF_URL = "url"
 CONF_USERNAME = "username"
 CONF_VALUE_TEMPLATE = "value_template"
 CONF_VERIFY_SSL = "verify_ssl"
+CONF_WAIT_FOR_TRIGGER = "wait_for_trigger"
 CONF_WAIT_TEMPLATE = "wait_template"
 CONF_WEBHOOK_ID = "webhook_id"
 CONF_WEEKDAY = "weekday"

homeassistant/helpers/config_validation.py

@@ -67,6 +67,7 @@ from homeassistant.const import (
     CONF_UNIT_SYSTEM_METRIC,
     CONF_UNTIL,
     CONF_VALUE_TEMPLATE,
+    CONF_WAIT_FOR_TRIGGER,
     CONF_WAIT_TEMPLATE,
     CONF_WHILE,
     ENTITY_MATCH_ALL,
@@ -1074,6 +1075,15 @@ _SCRIPT_CHOOSE_SCHEMA = vol.Schema(
     }
 )
 
+_SCRIPT_WAIT_FOR_TRIGGER_SCHEMA = vol.Schema(
+    {
+        vol.Optional(CONF_ALIAS): string,
+        vol.Required(CONF_WAIT_FOR_TRIGGER): TRIGGER_SCHEMA,
+        vol.Optional(CONF_TIMEOUT): positive_time_period_template,
+        vol.Optional(CONF_CONTINUE_ON_TIMEOUT): boolean,
+    }
+)
+
 SCRIPT_ACTION_DELAY = "delay"
 SCRIPT_ACTION_WAIT_TEMPLATE = "wait_template"
 SCRIPT_ACTION_CHECK_CONDITION = "condition"
@@ -1083,6 +1093,7 @@ SCRIPT_ACTION_DEVICE_AUTOMATION = "device"
 SCRIPT_ACTION_ACTIVATE_SCENE = "scene"
 SCRIPT_ACTION_REPEAT = "repeat"
 SCRIPT_ACTION_CHOOSE = "choose"
+SCRIPT_ACTION_WAIT_FOR_TRIGGER = "wait_for_trigger"
 
 
 def determine_script_action(action: dict) -> str:
@@ -1111,6 +1122,9 @@ def determine_script_action(action: dict) -> str:
     if CONF_CHOOSE in action:
         return SCRIPT_ACTION_CHOOSE
 
+    if CONF_WAIT_FOR_TRIGGER in action:
+        return SCRIPT_ACTION_WAIT_FOR_TRIGGER
+
     return SCRIPT_ACTION_CALL_SERVICE
 
 
@@ -1124,4 +1138,5 @@ ACTION_TYPE_SCHEMAS: Dict[str, Callable[[Any], dict]] = {
     SCRIPT_ACTION_ACTIVATE_SCENE: _SCRIPT_SCENE_SCHEMA,
     SCRIPT_ACTION_REPEAT: _SCRIPT_REPEAT_SCHEMA,
     SCRIPT_ACTION_CHOOSE: _SCRIPT_CHOOSE_SCHEMA,
+    SCRIPT_ACTION_WAIT_FOR_TRIGGER: _SCRIPT_WAIT_FOR_TRIGGER_SCHEMA,
 }

homeassistant/helpers/script.py

@@ -1,5 +1,6 @@
 """Helpers to execute scripts."""
 import asyncio
+from copy import deepcopy
 from datetime import datetime, timedelta
 from functools import partial
 import itertools
@@ -45,6 +46,7 @@ from homeassistant.const import (
     CONF_SEQUENCE,
     CONF_TIMEOUT,
     CONF_UNTIL,
+    CONF_WAIT_FOR_TRIGGER,
     CONF_WAIT_TEMPLATE,
     CONF_WHILE,
     EVENT_HOMEASSISTANT_STOP,
@@ -61,6 +63,10 @@ from homeassistant.helpers.service import (
     CONF_SERVICE_DATA,
     async_prepare_call_from_config,
 )
+from homeassistant.helpers.trigger import (
+    async_initialize_triggers,
+    async_validate_trigger_config,
+)
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.util import slugify
 from homeassistant.util.dt import utcnow
@@ -123,7 +129,7 @@ async def async_validate_action_config(
             hass, config[CONF_DOMAIN], "action"
         )
         config = platform.ACTION_SCHEMA(config)  # type: ignore
-    if (
+    elif (
         action_type == cv.SCRIPT_ACTION_CHECK_CONDITION
         and config[CONF_CONDITION] == "device"
     ):
@@ -131,6 +137,10 @@ async def async_validate_action_config(
             hass, config[CONF_DOMAIN], "condition"
         )
         config = platform.CONDITION_SCHEMA(config)  # type: ignore
+    elif action_type == cv.SCRIPT_ACTION_WAIT_FOR_TRIGGER:
+        config[CONF_WAIT_FOR_TRIGGER] = await async_validate_trigger_config(
+            hass, config[CONF_WAIT_FOR_TRIGGER]
+        )
 
     return config
 
@@ -539,6 +549,64 @@ class _ScriptRun:
         if choose_data["default"]:
             await self._async_run_script(choose_data["default"])
 
+    async def _async_wait_for_trigger_step(self):
+        """Wait for a trigger event."""
+        if CONF_TIMEOUT in self._action:
+            delay = self._get_pos_time_period_template(CONF_TIMEOUT).total_seconds()
+        else:
+            delay = None
+
+        self._script.last_action = self._action.get(CONF_ALIAS, "wait for trigger")
+        self._log(
+            "Executing step %s%s",
+            self._script.last_action,
+            "" if delay is None else f" (timeout: {timedelta(seconds=delay)})",
+        )
+
+        variables = deepcopy(self._variables)
+        self._variables["wait"] = {"remaining": delay, "trigger": None}
+
+        async def async_done(variables, context=None):
+            self._variables["wait"] = {
+                "remaining": to_context.remaining if to_context else delay,
+                "trigger": variables["trigger"],
+            }
+            done.set()
+
+        def log_cb(level, msg):
+            self._log(msg, level=level)
+
+        to_context = None
+        remove_triggers = await async_initialize_triggers(
+            self._hass,
+            self._action[CONF_WAIT_FOR_TRIGGER],
+            async_done,
+            self._script.domain,
+            self._script.name,
+            log_cb,
+            variables=variables,
+        )
+        if not remove_triggers:
+            return
+
+        self._changed()
+        done = asyncio.Event()
+        tasks = [
+            self._hass.async_create_task(flag.wait()) for flag in (self._stop, done)
+        ]
+        try:
+            async with timeout(delay) as to_context:
+                await asyncio.wait(tasks, return_when=asyncio.FIRST_COMPLETED)
+        except asyncio.TimeoutError:
+            if not self._action.get(CONF_CONTINUE_ON_TIMEOUT, True):
+                self._log(_TIMEOUT_MSG)
+                raise _StopScript
+            self._variables["wait"]["remaining"] = 0.0
+        finally:
+            for task in tasks:
+                task.cancel()
+            remove_triggers()
+
     async def _async_run_script(self, script):
         """Execute a script."""
         await self._async_run_long_action(

homeassistant/helpers/trigger.py

@@ -1,7 +1,8 @@
 """Triggers."""
 import asyncio
 import logging
-from typing import Any, Callable, List, Optional
+from types import MappingProxyType
+from typing import Any, Callable, Dict, List, Optional, Union
 
 import voluptuous as vol
 
@@ -59,12 +60,14 @@ async def async_initialize_triggers(
     name: str,
     log_cb: Callable,
     home_assistant_start: bool = False,
+    variables: Optional[Union[Dict[str, Any], MappingProxyType]] = None,
 ) -> Optional[CALLBACK_TYPE]:
     """Initialize triggers."""
     info = {
         "domain": domain,
         "name": name,
         "home_assistant_start": home_assistant_start,
+        "variables": variables,
     }
 
     triggers = []

tests/components/script/test_init.py

@@ -185,7 +185,7 @@ invalid_configs = [
 @pytest.mark.parametrize("value", invalid_configs)
 async def test_setup_with_invalid_configs(hass, value):
     """Test setup with invalid configs."""
-    assert not await async_setup_component(
+    assert await async_setup_component(
         hass, "script", {"script": value}
     ), f"Script loaded with wrong config {value}"
 
@@ -418,7 +418,12 @@ async def test_extraction_functions(hass):
                             "service": "test.script",
                             "data": {"entity_id": "light.in_first"},
                         },
-                        {"domain": "light", "device_id": "device-in-both"},
+                        {
+                            "entity_id": "light.device_in_both",
+                            "domain": "light",
+                            "type": "turn_on",
+                            "device_id": "device-in-both",
+                        },
                     ]
                 },
                 "test2": {
@@ -433,8 +438,18 @@ async def test_extraction_functions(hass):
                             "state": "100",
                         },
                         {"scene": "scene.hello"},
-                        {"domain": "light", "device_id": "device-in-both"},
+                        {
-                        {"domain": "light", "device_id": "device-in-last"},
+                            "entity_id": "light.device_in_both",
+                            "domain": "light",
+                            "type": "turn_on",
+                            "device_id": "device-in-both",
+                        },
+                        {
+                            "entity_id": "light.device_in_last",
+                            "domain": "light",
+                            "type": "turn_on",
+                            "device_id": "device-in-last",
+                        },
                     ],
                 },
             }

tests/helpers/test_script.py

@@ -475,15 +475,20 @@ async def test_cancel_delay(hass):
         assert len(events) == 0
 
 
-async def test_wait_template_basic(hass):
+@pytest.mark.parametrize("action_type", ["template", "trigger"])
-    """Test the wait template."""
+async def test_wait_basic(hass, action_type):
+    """Test wait actions."""
     wait_alias = "wait step"
-    sequence = cv.SCRIPT_SCHEMA(
+    action = {"alias": wait_alias}
-        {
+    if action_type == "template":
-            "wait_template": "{{ states.switch.test.state == 'off' }}",
+        action["wait_template"] = "{{ states.switch.test.state == 'off' }}"
-            "alias": wait_alias,
+    else:
+        action["wait_for_trigger"] = {
+            "platform": "state",
+            "entity_id": "switch.test",
+            "to": "off",
         }
-    )
+    sequence = cv.SCRIPT_SCHEMA(action)
     script_obj = script.Script(hass, sequence, "Test Name", "test_domain")
     wait_started_flag = async_watch_for_action(script_obj, wait_alias)
 
@@ -505,14 +510,25 @@ async def test_wait_template_basic(hass):
         assert script_obj.last_action is None
 
 
-async def test_multiple_runs_wait_template(hass):
+@pytest.mark.parametrize("action_type", ["template", "trigger"])
-    """Test multiple runs with wait_template in script."""
+async def test_multiple_runs_wait(hass, action_type):
+    """Test multiple runs with wait in script."""
     event = "test_event"
     events = async_capture_events(hass, event)
+    if action_type == "template":
+        action = {"wait_template": "{{ states.switch.test.state == 'off' }}"}
+    else:
+        action = {
+            "wait_for_trigger": {
+                "platform": "state",
+                "entity_id": "switch.test",
+                "to": "off",
+            }
+        }
     sequence = cv.SCRIPT_SCHEMA(
         [
             {"event": event, "event_data": {"value": 1}},
-            {"wait_template": "{{ states.switch.test.state == 'off' }}"},
+            action,
             {"event": event, "event_data": {"value": 2}},
         ]
     )
@@ -529,12 +545,15 @@ async def test_multiple_runs_wait_template(hass):
         assert script_obj.is_running
         assert len(events) == 1
         assert events[-1].data["value"] == 1
+
+        # Start second run of script while first run is in wait_template.
+        wait_started_flag.clear()
+        hass.async_create_task(script_obj.async_run())
+        await asyncio.wait_for(wait_started_flag.wait(), 1)
     except (AssertionError, asyncio.TimeoutError):
         await script_obj.async_stop()
         raise
     else:
-        # Start second run of script while first run is in wait_template.
-        hass.async_create_task(script_obj.async_run())
         hass.states.async_set("switch.test", "off")
         await hass.async_block_till_done()
 
@@ -545,16 +564,22 @@ async def test_multiple_runs_wait_template(hass):
         assert events[-1].data["value"] == 2
 
 
-async def test_cancel_wait_template(hass):
+@pytest.mark.parametrize("action_type", ["template", "trigger"])
-    """Test the cancelling while wait_template is present."""
+async def test_cancel_wait(hass, action_type):
+    """Test the cancelling while wait is present."""
     event = "test_event"
     events = async_capture_events(hass, event)
-    sequence = cv.SCRIPT_SCHEMA(
+    if action_type == "template":
-        [
+        action = {"wait_template": "{{ states.switch.test.state == 'off' }}"}
-            {"wait_template": "{{ states.switch.test.state == 'off' }}"},
+    else:
-            {"event": event},
+        action = {
-        ]
+            "wait_for_trigger": {
-    )
+                "platform": "state",
+                "entity_id": "switch.test",
+                "to": "off",
+            }
+        }
+    sequence = cv.SCRIPT_SCHEMA([action, {"event": event}])
     script_obj = script.Script(hass, sequence, "Test Name", "test_domain")
     wait_started_flag = async_watch_for_action(script_obj, "wait")
 
@@ -606,20 +631,24 @@ async def test_wait_template_not_schedule(hass):
 @pytest.mark.parametrize(
     "timeout_param", [5, "{{ 5 }}", {"seconds": 5}, {"seconds": "{{ 5 }}"}]
 )
-async def test_wait_template_timeout(hass, caplog, timeout_param):
+@pytest.mark.parametrize("action_type", ["template", "trigger"])
+async def test_wait_timeout(hass, caplog, timeout_param, action_type):
     """Test the wait timeout option."""
     event = "test_event"
     events = async_capture_events(hass, event)
-    sequence = cv.SCRIPT_SCHEMA(
+    if action_type == "template":
-        [
+        action = {"wait_template": "{{ states.switch.test.state == 'off' }}"}
-            {
+    else:
-                "wait_template": "{{ states.switch.test.state == 'off' }}",
+        action = {
-                "timeout": timeout_param,
+            "wait_for_trigger": {
-                "continue_on_timeout": True,
+                "platform": "state",
-            },
+                "entity_id": "switch.test",
-            {"event": event},
+                "to": "off",
-        ]
+            }
-    )
+        }
+    action["timeout"] = timeout_param
+    action["continue_on_timeout"] = True
+    sequence = cv.SCRIPT_SCHEMA([action, {"event": event}])
     script_obj = script.Script(hass, sequence, "Test Name", "test_domain")
     wait_started_flag = async_watch_for_action(script_obj, "wait")
 
@@ -651,17 +680,27 @@ async def test_wait_template_timeout(hass, caplog, timeout_param):
 @pytest.mark.parametrize(
     "continue_on_timeout,n_events", [(False, 0), (True, 1), (None, 1)]
 )
-async def test_wait_template_continue_on_timeout(hass, continue_on_timeout, n_events):
+@pytest.mark.parametrize("action_type", ["template", "trigger"])
-    """Test the wait template continue_on_timeout option."""
+async def test_wait_continue_on_timeout(
+    hass, continue_on_timeout, n_events, action_type
+):
+    """Test the wait continue_on_timeout option."""
     event = "test_event"
     events = async_capture_events(hass, event)
-    sequence = [
+    if action_type == "template":
-        {"wait_template": "{{ states.switch.test.state == 'off' }}", "timeout": 5},
+        action = {"wait_template": "{{ states.switch.test.state == 'off' }}"}
-        {"event": event},
+    else:
-    ]
+        action = {
+            "wait_for_trigger": {
+                "platform": "state",
+                "entity_id": "switch.test",
+                "to": "off",
+            }
+        }
+    action["timeout"] = 5
     if continue_on_timeout is not None:
-        sequence[0]["continue_on_timeout"] = continue_on_timeout
+        action["continue_on_timeout"] = continue_on_timeout
-    sequence = cv.SCRIPT_SCHEMA(sequence)
+    sequence = cv.SCRIPT_SCHEMA([action, {"event": event}])
     script_obj = script.Script(hass, sequence, "Test Name", "test_domain")
     wait_started_flag = async_watch_for_action(script_obj, "wait")
 
@@ -708,11 +747,23 @@ async def test_wait_template_variables_in(hass):
 
 
 @pytest.mark.parametrize("mode", ["no_timeout", "timeout_finish", "timeout_not_finish"])
-async def test_wait_template_variables_out(hass, mode):
+@pytest.mark.parametrize("action_type", ["template", "trigger"])
-    """Test the wait template output variable."""
+async def test_wait_variables_out(hass, mode, action_type):
+    """Test the wait output variable."""
     event = "test_event"
     events = async_capture_events(hass, event)
-    action = {"wait_template": "{{ states.switch.test.state == 'off' }}"}
+    if action_type == "template":
+        action = {"wait_template": "{{ states.switch.test.state == 'off' }}"}
+        event_key = "completed"
+    else:
+        action = {
+            "wait_for_trigger": {
+                "platform": "state",
+                "entity_id": "switch.test",
+                "to": "off",
+            }
+        }
+        event_key = "trigger"
     if mode != "no_timeout":
         action["timeout"] = 5
         action["continue_on_timeout"] = True
@@ -721,7 +772,7 @@ async def test_wait_template_variables_out(hass, mode):
         {
             "event": event,
             "event_data_template": {
-                "completed": "{{ wait.completed }}",
+                event_key: f"{{{{ wait.{event_key} }}}}",
                 "remaining": "{{ wait.remaining }}",
             },
         },
@@ -749,7 +800,12 @@ async def test_wait_template_variables_out(hass, mode):
 
         assert not script_obj.is_running
         assert len(events) == 1
-        assert events[0].data["completed"] == str(mode != "timeout_not_finish")
+        if action_type == "template":
+            assert events[0].data["completed"] == str(mode != "timeout_not_finish")
+        elif mode != "timeout_not_finish":
+            assert "'to_state': <state switch.test=off" in events[0].data["trigger"]
+        else:
+            assert events[0].data["trigger"] == "None"
         remaining = events[0].data["remaining"]
         if mode == "no_timeout":
             assert remaining == "None"
@@ -759,6 +815,30 @@ async def test_wait_template_variables_out(hass, mode):
             assert float(remaining) == 0.0
 
 
+async def test_wait_for_trigger_bad(hass, caplog):
+    """Test bad wait_for_trigger."""
+    script_obj = script.Script(
+        hass,
+        cv.SCRIPT_SCHEMA(
+            {"wait_for_trigger": {"platform": "state", "entity_id": "sensor.abc"}}
+        ),
+        "Test Name",
+        "test_domain",
+    )
+
+    async def async_attach_trigger_mock(*args, **kwargs):
+        return None
+
+    with mock.patch(
+        "homeassistant.components.homeassistant.triggers.state.async_attach_trigger",
+        wraps=async_attach_trigger_mock,
+    ):
+        hass.async_create_task(script_obj.async_run())
+        await hass.async_block_till_done()
+
+    assert "Error setting up trigger" in caplog.text
+
+
 async def test_condition_basic(hass):
     """Test if we can use conditions in a script."""
     event = "test_event"