core/homeassistant/components/webhook/trigger.py

146 lines
4.4 KiB
Python

"""Offer webhook triggered automation rules."""
from __future__ import annotations
from dataclasses import dataclass
import logging
from aiohttp import hdrs
import voluptuous as vol
from homeassistant.const import CONF_PLATFORM, CONF_WEBHOOK_ID
from homeassistant.core import CALLBACK_TYPE, HassJob, HomeAssistant, callback
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.issue_registry import (
IssueSeverity,
async_create_issue,
async_delete_issue,
)
from homeassistant.helpers.trigger import TriggerActionType, TriggerInfo
from homeassistant.helpers.typing import ConfigType
from . import (
DEFAULT_METHODS,
DOMAIN,
SUPPORTED_METHODS,
async_register,
async_unregister,
)
_LOGGER = logging.getLogger(__name__)
DEPENDENCIES = ("webhook",)
CONF_ALLOWED_METHODS = "allowed_methods"
CONF_LOCAL_ONLY = "local_only"
TRIGGER_SCHEMA = cv.TRIGGER_BASE_SCHEMA.extend(
{
vol.Required(CONF_PLATFORM): "webhook",
vol.Required(CONF_WEBHOOK_ID): cv.string,
vol.Optional(CONF_ALLOWED_METHODS): vol.All(
cv.ensure_list,
[vol.All(vol.Upper, vol.In(SUPPORTED_METHODS))],
vol.Unique(),
),
vol.Optional(CONF_LOCAL_ONLY): bool,
}
)
WEBHOOK_TRIGGERS = f"{DOMAIN}_triggers"
@dataclass(slots=True)
class TriggerInstance:
"""Attached trigger settings."""
trigger_info: TriggerInfo
job: HassJob
async def _handle_webhook(hass, webhook_id, request):
"""Handle incoming webhook."""
base_result = {"platform": "webhook", "webhook_id": webhook_id}
if "json" in request.headers.get(hdrs.CONTENT_TYPE, ""):
base_result["json"] = await request.json()
else:
base_result["data"] = await request.post()
base_result["query"] = request.query
base_result["description"] = "webhook"
triggers: dict[str, list[TriggerInstance]] = hass.data.setdefault(
WEBHOOK_TRIGGERS, {}
)
for trigger in triggers[webhook_id]:
result = {**base_result, **trigger.trigger_info["trigger_data"]}
hass.async_run_hass_job(trigger.job, {"trigger": result})
async def async_attach_trigger(
hass: HomeAssistant,
config: ConfigType,
action: TriggerActionType,
trigger_info: TriggerInfo,
) -> CALLBACK_TYPE:
"""Trigger based on incoming webhooks."""
webhook_id: str = config[CONF_WEBHOOK_ID]
local_only = config.get(CONF_LOCAL_ONLY)
issue_id: str | None = None
if local_only is None:
issue_id = f"trigger_missing_local_only_{webhook_id}"
variables = trigger_info["variables"] or {}
automation_info = variables.get("this", {})
automation_id = automation_info.get("attributes", {}).get("id")
automation_entity_id = automation_info.get("entity_id")
automation_name = trigger_info.get("name") or automation_entity_id
async_create_issue(
hass,
DOMAIN,
issue_id,
breaks_in_ha_version="2023.11.0",
is_fixable=False,
severity=IssueSeverity.WARNING,
learn_more_url="https://www.home-assistant.io/docs/automation/trigger/#webhook-trigger",
translation_key="trigger_missing_local_only",
translation_placeholders={
"webhook_id": webhook_id,
"automation_name": automation_name,
"entity_id": automation_entity_id,
"edit": f"/config/automation/edit/{automation_id}",
},
)
allowed_methods = config.get(CONF_ALLOWED_METHODS, DEFAULT_METHODS)
job = HassJob(action)
triggers: dict[str, list[TriggerInstance]] = hass.data.setdefault(
WEBHOOK_TRIGGERS, {}
)
if webhook_id not in triggers:
async_register(
hass,
trigger_info["domain"],
trigger_info["name"],
webhook_id,
_handle_webhook,
local_only=local_only,
allowed_methods=allowed_methods,
)
triggers[webhook_id] = []
trigger_instance = TriggerInstance(trigger_info, job)
triggers[webhook_id].append(trigger_instance)
@callback
def unregister():
"""Unregister webhook."""
if issue_id:
async_delete_issue(hass, DOMAIN, issue_id)
triggers[webhook_id].remove(trigger_instance)
if not triggers[webhook_id]:
async_unregister(hass, webhook_id)
triggers.pop(webhook_id)
return unregister