8015bb98a9
- These were using orjson directly, its a bit cleaner to use the helper so everything is easier to adjust in the future if we need to change anything about the loading
2098 lines
68 KiB
Python
2098 lines
68 KiB
Python
"""Template helper methods for rendering strings with Home Assistant data."""
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from __future__ import annotations
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from ast import literal_eval
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import asyncio
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import base64
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import collections.abc
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from collections.abc import Callable, Generator, Iterable
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from contextlib import contextmanager, suppress
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from contextvars import ContextVar
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from datetime import datetime, timedelta
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from functools import partial, wraps
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import json
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import logging
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import math
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from operator import attrgetter
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import random
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import re
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import statistics
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from struct import error as StructError, pack, unpack_from
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import sys
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from typing import Any, cast
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from urllib.parse import urlencode as urllib_urlencode
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import weakref
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import jinja2
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from jinja2 import pass_context, pass_environment
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from jinja2.sandbox import ImmutableSandboxedEnvironment
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from jinja2.utils import Namespace
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import voluptuous as vol
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from homeassistant.const import (
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ATTR_ENTITY_ID,
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ATTR_LATITUDE,
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ATTR_LONGITUDE,
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ATTR_PERSONS,
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ATTR_UNIT_OF_MEASUREMENT,
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LENGTH_METERS,
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STATE_UNKNOWN,
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)
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from homeassistant.core import (
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HomeAssistant,
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State,
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callback,
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split_entity_id,
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valid_entity_id,
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)
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from homeassistant.exceptions import TemplateError
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from homeassistant.loader import bind_hass
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from homeassistant.util import (
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convert,
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dt as dt_util,
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location as loc_util,
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slugify as slugify_util,
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)
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from homeassistant.util.async_ import run_callback_threadsafe
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from homeassistant.util.thread import ThreadWithException
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from . import area_registry, device_registry, entity_registry, location as loc_helper
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from .json import JSON_DECODE_EXCEPTIONS, json_loads
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from .typing import TemplateVarsType
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# mypy: allow-untyped-defs, no-check-untyped-defs
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_LOGGER = logging.getLogger(__name__)
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_SENTINEL = object()
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DATE_STR_FORMAT = "%Y-%m-%d %H:%M:%S"
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_RENDER_INFO = "template.render_info"
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_ENVIRONMENT = "template.environment"
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_ENVIRONMENT_LIMITED = "template.environment_limited"
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_ENVIRONMENT_STRICT = "template.environment_strict"
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_RE_JINJA_DELIMITERS = re.compile(r"\{%|\{\{|\{#")
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# Match "simple" ints and floats. -1.0, 1, +5, 5.0
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_IS_NUMERIC = re.compile(r"^[+-]?(?!0\d)\d*(?:\.\d*)?$")
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_RESERVED_NAMES = {"contextfunction", "evalcontextfunction", "environmentfunction"}
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_GROUP_DOMAIN_PREFIX = "group."
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_ZONE_DOMAIN_PREFIX = "zone."
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_COLLECTABLE_STATE_ATTRIBUTES = {
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"state",
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"attributes",
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"last_changed",
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"last_updated",
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"context",
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"domain",
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"object_id",
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"name",
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}
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ALL_STATES_RATE_LIMIT = timedelta(minutes=1)
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DOMAIN_STATES_RATE_LIMIT = timedelta(seconds=1)
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template_cv: ContextVar[tuple[str, str] | None] = ContextVar(
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"template_cv", default=None
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)
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@bind_hass
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def attach(hass: HomeAssistant, obj: Any) -> None:
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"""Recursively attach hass to all template instances in list and dict."""
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if isinstance(obj, list):
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for child in obj:
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attach(hass, child)
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elif isinstance(obj, collections.abc.Mapping):
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for child_key, child_value in obj.items():
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attach(hass, child_key)
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attach(hass, child_value)
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elif isinstance(obj, Template):
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obj.hass = hass
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def render_complex(
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value: Any,
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variables: TemplateVarsType = None,
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limited: bool = False,
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parse_result: bool = True,
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) -> Any:
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"""Recursive template creator helper function."""
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if isinstance(value, list):
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return [
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render_complex(item, variables, limited, parse_result) for item in value
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]
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if isinstance(value, collections.abc.Mapping):
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return {
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render_complex(key, variables, limited, parse_result): render_complex(
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item, variables, limited, parse_result
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)
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for key, item in value.items()
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}
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if isinstance(value, Template):
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return value.async_render(variables, limited=limited, parse_result=parse_result)
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return value
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def is_complex(value: Any) -> bool:
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"""Test if data structure is a complex template."""
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if isinstance(value, Template):
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return True
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if isinstance(value, list):
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return any(is_complex(val) for val in value)
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if isinstance(value, collections.abc.Mapping):
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return any(is_complex(val) for val in value.keys()) or any(
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is_complex(val) for val in value.values()
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)
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return False
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def is_template_string(maybe_template: str) -> bool:
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"""Check if the input is a Jinja2 template."""
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return _RE_JINJA_DELIMITERS.search(maybe_template) is not None
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class ResultWrapper:
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"""Result wrapper class to store render result."""
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render_result: str | None
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def gen_result_wrapper(kls):
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"""Generate a result wrapper."""
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class Wrapper(kls, ResultWrapper):
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"""Wrapper of a kls that can store render_result."""
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def __init__(self, *args: Any, render_result: str | None = None) -> None:
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super().__init__(*args)
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self.render_result = render_result
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def __str__(self) -> str:
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if self.render_result is None:
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# Can't get set repr to work
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if kls is set:
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return str(set(self))
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return cast(str, kls.__str__(self))
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return self.render_result
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return Wrapper
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class TupleWrapper(tuple, ResultWrapper):
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"""Wrap a tuple."""
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# This is all magic to be allowed to subclass a tuple.
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def __new__(cls, value: tuple, *, render_result: str | None = None) -> TupleWrapper:
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"""Create a new tuple class."""
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return super().__new__(cls, tuple(value))
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# pylint: disable=super-init-not-called
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def __init__(self, value: tuple, *, render_result: str | None = None) -> None:
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"""Initialize a new tuple class."""
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self.render_result = render_result
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def __str__(self) -> str:
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"""Return string representation."""
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if self.render_result is None:
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return super().__str__()
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return self.render_result
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RESULT_WRAPPERS: dict[type, type] = {
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kls: gen_result_wrapper(kls) # type: ignore[no-untyped-call]
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for kls in (list, dict, set)
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}
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RESULT_WRAPPERS[tuple] = TupleWrapper
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def _true(arg: str) -> bool:
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return True
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def _false(arg: str) -> bool:
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return False
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class RenderInfo:
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"""Holds information about a template render."""
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def __init__(self, template: Template) -> None:
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"""Initialise."""
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self.template = template
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# Will be set sensibly once frozen.
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self.filter_lifecycle: Callable[[str], bool] = _true
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self.filter: Callable[[str], bool] = _true
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self._result: str | None = None
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self.is_static = False
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self.exception: TemplateError | None = None
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self.all_states = False
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self.all_states_lifecycle = False
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self.domains: collections.abc.Set[str] = set()
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self.domains_lifecycle: collections.abc.Set[str] = set()
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self.entities: collections.abc.Set[str] = set()
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self.rate_limit: timedelta | None = None
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self.has_time = False
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def __repr__(self) -> str:
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"""Representation of RenderInfo."""
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return f"<RenderInfo {self.template} all_states={self.all_states} all_states_lifecycle={self.all_states_lifecycle} domains={self.domains} domains_lifecycle={self.domains_lifecycle} entities={self.entities} rate_limit={self.rate_limit}> has_time={self.has_time}"
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def _filter_domains_and_entities(self, entity_id: str) -> bool:
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"""Template should re-render if the entity state changes when we match specific domains or entities."""
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return (
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split_entity_id(entity_id)[0] in self.domains or entity_id in self.entities
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)
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def _filter_entities(self, entity_id: str) -> bool:
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"""Template should re-render if the entity state changes when we match specific entities."""
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return entity_id in self.entities
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def _filter_lifecycle_domains(self, entity_id: str) -> bool:
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"""Template should re-render if the entity is added or removed with domains watched."""
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return split_entity_id(entity_id)[0] in self.domains_lifecycle
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def result(self) -> str:
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"""Results of the template computation."""
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if self.exception is not None:
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raise self.exception
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return cast(str, self._result)
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def _freeze_static(self) -> None:
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self.is_static = True
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self._freeze_sets()
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self.all_states = False
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def _freeze_sets(self) -> None:
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self.entities = frozenset(self.entities)
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self.domains = frozenset(self.domains)
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self.domains_lifecycle = frozenset(self.domains_lifecycle)
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def _freeze(self) -> None:
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self._freeze_sets()
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if self.rate_limit is None:
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if self.all_states or self.exception:
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self.rate_limit = ALL_STATES_RATE_LIMIT
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elif self.domains or self.domains_lifecycle:
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self.rate_limit = DOMAIN_STATES_RATE_LIMIT
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if self.exception:
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return
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if not self.all_states_lifecycle:
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if self.domains_lifecycle:
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self.filter_lifecycle = self._filter_lifecycle_domains
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else:
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self.filter_lifecycle = _false
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if self.all_states:
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return
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if self.domains:
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self.filter = self._filter_domains_and_entities
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elif self.entities:
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self.filter = self._filter_entities
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else:
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self.filter = _false
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class Template:
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"""Class to hold a template and manage caching and rendering."""
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__slots__ = (
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"__weakref__",
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"template",
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"hass",
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"is_static",
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"_compiled_code",
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"_compiled",
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"_exc_info",
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"_limited",
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"_strict",
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)
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def __init__(self, template, hass=None):
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"""Instantiate a template."""
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if not isinstance(template, str):
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raise TypeError("Expected template to be a string")
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self.template: str = template.strip()
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self._compiled_code = None
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self._compiled: jinja2.Template | None = None
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self.hass = hass
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self.is_static = not is_template_string(template)
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self._exc_info = None
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self._limited = None
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self._strict = None
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@property
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def _env(self) -> TemplateEnvironment:
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if self.hass is None:
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return _NO_HASS_ENV
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if self._limited:
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wanted_env = _ENVIRONMENT_LIMITED
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elif self._strict:
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wanted_env = _ENVIRONMENT_STRICT
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else:
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wanted_env = _ENVIRONMENT
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ret: TemplateEnvironment | None = self.hass.data.get(wanted_env)
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if ret is None:
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ret = self.hass.data[wanted_env] = TemplateEnvironment(self.hass, self._limited, self._strict) # type: ignore[no-untyped-call]
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return ret
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|
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def ensure_valid(self) -> None:
|
|
"""Return if template is valid."""
|
|
with set_template(self.template, "compiling"):
|
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if self.is_static or self._compiled_code is not None:
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return
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|
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try:
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self._compiled_code = self._env.compile(self.template) # type: ignore[no-untyped-call]
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|
except jinja2.TemplateError as err:
|
|
raise TemplateError(err) from err
|
|
|
|
def render(
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self,
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variables: TemplateVarsType = None,
|
|
parse_result: bool = True,
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|
limited: bool = False,
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|
**kwargs: Any,
|
|
) -> Any:
|
|
"""Render given template.
|
|
|
|
If limited is True, the template is not allowed to access any function or filter depending on hass or the state machine.
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|
"""
|
|
if self.is_static:
|
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if not parse_result or self.hass.config.legacy_templates:
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return self.template
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|
return self._parse_result(self.template)
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|
|
|
return run_callback_threadsafe(
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self.hass.loop,
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partial(self.async_render, variables, parse_result, limited, **kwargs),
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).result()
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|
@callback
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|
def async_render(
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self,
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variables: TemplateVarsType = None,
|
|
parse_result: bool = True,
|
|
limited: bool = False,
|
|
strict: bool = False,
|
|
**kwargs: Any,
|
|
) -> Any:
|
|
"""Render given template.
|
|
|
|
This method must be run in the event loop.
|
|
|
|
If limited is True, the template is not allowed to access any function or filter depending on hass or the state machine.
|
|
"""
|
|
if self.is_static:
|
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if not parse_result or self.hass.config.legacy_templates:
|
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return self.template
|
|
return self._parse_result(self.template)
|
|
|
|
compiled = self._compiled or self._ensure_compiled(limited, strict)
|
|
|
|
if variables is not None:
|
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kwargs.update(variables)
|
|
|
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try:
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render_result = _render_with_context(self.template, compiled, **kwargs)
|
|
except Exception as err:
|
|
raise TemplateError(err) from err
|
|
|
|
render_result = render_result.strip()
|
|
|
|
if self.hass.config.legacy_templates or not parse_result:
|
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return render_result
|
|
|
|
return self._parse_result(render_result)
|
|
|
|
def _parse_result(self, render_result: str) -> Any:
|
|
"""Parse the result."""
|
|
try:
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|
result = literal_eval(render_result)
|
|
|
|
if type(result) in RESULT_WRAPPERS:
|
|
result = RESULT_WRAPPERS[type(result)](
|
|
result, render_result=render_result
|
|
)
|
|
|
|
# If the literal_eval result is a string, use the original
|
|
# render, by not returning right here. The evaluation of strings
|
|
# resulting in strings impacts quotes, to avoid unexpected
|
|
# output; use the original render instead of the evaluated one.
|
|
# Complex and scientific values are also unexpected. Filter them out.
|
|
if (
|
|
# Filter out string and complex numbers
|
|
not isinstance(result, (str, complex))
|
|
and (
|
|
# Pass if not numeric and not a boolean
|
|
not isinstance(result, (int, float))
|
|
# Or it's a boolean (inherit from int)
|
|
or isinstance(result, bool)
|
|
# Or if it's a digit
|
|
or _IS_NUMERIC.match(render_result) is not None
|
|
)
|
|
):
|
|
return result
|
|
except (ValueError, TypeError, SyntaxError, MemoryError):
|
|
pass
|
|
|
|
return render_result
|
|
|
|
async def async_render_will_timeout(
|
|
self,
|
|
timeout: float,
|
|
variables: TemplateVarsType = None,
|
|
strict: bool = False,
|
|
**kwargs: Any,
|
|
) -> bool:
|
|
"""Check to see if rendering a template will timeout during render.
|
|
|
|
This is intended to check for expensive templates
|
|
that will make the system unstable. The template
|
|
is rendered in the executor to ensure it does not
|
|
tie up the event loop.
|
|
|
|
This function is not a security control and is only
|
|
intended to be used as a safety check when testing
|
|
templates.
|
|
|
|
This method must be run in the event loop.
|
|
"""
|
|
if self.is_static:
|
|
return False
|
|
|
|
compiled = self._compiled or self._ensure_compiled(strict=strict)
|
|
|
|
if variables is not None:
|
|
kwargs.update(variables)
|
|
|
|
self._exc_info = None
|
|
finish_event = asyncio.Event()
|
|
|
|
def _render_template() -> None:
|
|
try:
|
|
_render_with_context(self.template, compiled, **kwargs)
|
|
except TimeoutError:
|
|
pass
|
|
except Exception: # pylint: disable=broad-except
|
|
self._exc_info = sys.exc_info()
|
|
finally:
|
|
run_callback_threadsafe(self.hass.loop, finish_event.set)
|
|
|
|
try:
|
|
template_render_thread = ThreadWithException(target=_render_template)
|
|
template_render_thread.start()
|
|
await asyncio.wait_for(finish_event.wait(), timeout=timeout)
|
|
if self._exc_info:
|
|
raise TemplateError(self._exc_info[1].with_traceback(self._exc_info[2]))
|
|
except asyncio.TimeoutError:
|
|
template_render_thread.raise_exc(TimeoutError)
|
|
return True
|
|
finally:
|
|
template_render_thread.join()
|
|
|
|
return False
|
|
|
|
@callback
|
|
def async_render_to_info(
|
|
self, variables: TemplateVarsType = None, strict: bool = False, **kwargs: Any
|
|
) -> RenderInfo:
|
|
"""Render the template and collect an entity filter."""
|
|
assert self.hass and _RENDER_INFO not in self.hass.data
|
|
|
|
render_info = RenderInfo(self)
|
|
|
|
# pylint: disable=protected-access
|
|
if self.is_static:
|
|
render_info._result = self.template.strip()
|
|
render_info._freeze_static()
|
|
return render_info
|
|
|
|
self.hass.data[_RENDER_INFO] = render_info
|
|
try:
|
|
render_info._result = self.async_render(variables, strict=strict, **kwargs)
|
|
except TemplateError as ex:
|
|
render_info.exception = ex
|
|
finally:
|
|
del self.hass.data[_RENDER_INFO]
|
|
|
|
render_info._freeze()
|
|
return render_info
|
|
|
|
def render_with_possible_json_value(self, value, error_value=_SENTINEL):
|
|
"""Render template with value exposed.
|
|
|
|
If valid JSON will expose value_json too.
|
|
"""
|
|
if self.is_static:
|
|
return self.template
|
|
|
|
return run_callback_threadsafe(
|
|
self.hass.loop,
|
|
self.async_render_with_possible_json_value,
|
|
value,
|
|
error_value,
|
|
).result()
|
|
|
|
@callback
|
|
def async_render_with_possible_json_value(
|
|
self, value, error_value=_SENTINEL, variables=None
|
|
):
|
|
"""Render template with value exposed.
|
|
|
|
If valid JSON will expose value_json too.
|
|
|
|
This method must be run in the event loop.
|
|
"""
|
|
if self.is_static:
|
|
return self.template
|
|
|
|
if self._compiled is None:
|
|
self._ensure_compiled()
|
|
|
|
variables = dict(variables or {})
|
|
variables["value"] = value
|
|
|
|
with suppress(*JSON_DECODE_EXCEPTIONS):
|
|
variables["value_json"] = json_loads(value)
|
|
|
|
try:
|
|
return _render_with_context(
|
|
self.template, self._compiled, **variables
|
|
).strip()
|
|
except jinja2.TemplateError as ex:
|
|
if error_value is _SENTINEL:
|
|
_LOGGER.error(
|
|
"Error parsing value: %s (value: %s, template: %s)",
|
|
ex,
|
|
value,
|
|
self.template,
|
|
)
|
|
return value if error_value is _SENTINEL else error_value
|
|
|
|
def _ensure_compiled(
|
|
self, limited: bool = False, strict: bool = False
|
|
) -> jinja2.Template:
|
|
"""Bind a template to a specific hass instance."""
|
|
self.ensure_valid()
|
|
|
|
assert self.hass is not None, "hass variable not set on template"
|
|
assert (
|
|
self._limited is None or self._limited == limited
|
|
), "can't change between limited and non limited template"
|
|
assert (
|
|
self._strict is None or self._strict == strict
|
|
), "can't change between strict and non strict template"
|
|
assert not (strict and limited), "can't combine strict and limited template"
|
|
|
|
self._limited = limited
|
|
self._strict = strict
|
|
env = self._env
|
|
|
|
self._compiled = jinja2.Template.from_code(
|
|
env, self._compiled_code, env.globals, None
|
|
)
|
|
|
|
return self._compiled
|
|
|
|
def __eq__(self, other):
|
|
"""Compare template with another."""
|
|
return (
|
|
self.__class__ == other.__class__
|
|
and self.template == other.template
|
|
and self.hass == other.hass
|
|
)
|
|
|
|
def __hash__(self) -> int:
|
|
"""Hash code for template."""
|
|
return hash(self.template)
|
|
|
|
def __repr__(self) -> str:
|
|
"""Representation of Template."""
|
|
return 'Template("' + self.template + '")'
|
|
|
|
|
|
class AllStates:
|
|
"""Class to expose all HA states as attributes."""
|
|
|
|
def __init__(self, hass: HomeAssistant) -> None:
|
|
"""Initialize all states."""
|
|
self._hass = hass
|
|
|
|
def __getattr__(self, name):
|
|
"""Return the domain state."""
|
|
if "." in name:
|
|
return _get_state_if_valid(self._hass, name)
|
|
|
|
if name in _RESERVED_NAMES:
|
|
return None
|
|
|
|
if not valid_entity_id(f"{name}.entity"):
|
|
raise TemplateError(f"Invalid domain name '{name}'")
|
|
|
|
return DomainStates(self._hass, name)
|
|
|
|
# Jinja will try __getitem__ first and it avoids the need
|
|
# to call is_safe_attribute
|
|
__getitem__ = __getattr__
|
|
|
|
def _collect_all(self) -> None:
|
|
render_info = self._hass.data.get(_RENDER_INFO)
|
|
if render_info is not None:
|
|
render_info.all_states = True
|
|
|
|
def _collect_all_lifecycle(self) -> None:
|
|
render_info = self._hass.data.get(_RENDER_INFO)
|
|
if render_info is not None:
|
|
render_info.all_states_lifecycle = True
|
|
|
|
def __iter__(self):
|
|
"""Return all states."""
|
|
self._collect_all()
|
|
return _state_generator(self._hass, None)
|
|
|
|
def __len__(self) -> int:
|
|
"""Return number of states."""
|
|
self._collect_all_lifecycle()
|
|
return self._hass.states.async_entity_ids_count()
|
|
|
|
def __call__(self, entity_id):
|
|
"""Return the states."""
|
|
state = _get_state(self._hass, entity_id)
|
|
return STATE_UNKNOWN if state is None else state.state
|
|
|
|
def __repr__(self) -> str:
|
|
"""Representation of All States."""
|
|
return "<template AllStates>"
|
|
|
|
|
|
class DomainStates:
|
|
"""Class to expose a specific HA domain as attributes."""
|
|
|
|
def __init__(self, hass: HomeAssistant, domain: str) -> None:
|
|
"""Initialize the domain states."""
|
|
self._hass = hass
|
|
self._domain = domain
|
|
|
|
def __getattr__(self, name):
|
|
"""Return the states."""
|
|
return _get_state_if_valid(self._hass, f"{self._domain}.{name}")
|
|
|
|
# Jinja will try __getitem__ first and it avoids the need
|
|
# to call is_safe_attribute
|
|
__getitem__ = __getattr__
|
|
|
|
def _collect_domain(self) -> None:
|
|
entity_collect = self._hass.data.get(_RENDER_INFO)
|
|
if entity_collect is not None:
|
|
entity_collect.domains.add(self._domain)
|
|
|
|
def _collect_domain_lifecycle(self) -> None:
|
|
entity_collect = self._hass.data.get(_RENDER_INFO)
|
|
if entity_collect is not None:
|
|
entity_collect.domains_lifecycle.add(self._domain)
|
|
|
|
def __iter__(self):
|
|
"""Return the iteration over all the states."""
|
|
self._collect_domain()
|
|
return _state_generator(self._hass, self._domain)
|
|
|
|
def __len__(self) -> int:
|
|
"""Return number of states."""
|
|
self._collect_domain_lifecycle()
|
|
return self._hass.states.async_entity_ids_count(self._domain)
|
|
|
|
def __repr__(self) -> str:
|
|
"""Representation of Domain States."""
|
|
return f"<template DomainStates('{self._domain}')>"
|
|
|
|
|
|
class TemplateStateBase(State):
|
|
"""Class to represent a state object in a template."""
|
|
|
|
__slots__ = ("_hass", "_collect", "_entity_id")
|
|
|
|
_state: State
|
|
|
|
# Inheritance is done so functions that check against State keep working
|
|
# pylint: disable=super-init-not-called
|
|
def __init__(self, hass: HomeAssistant, collect: bool, entity_id: str) -> None:
|
|
"""Initialize template state."""
|
|
self._hass = hass
|
|
self._collect = collect
|
|
self._entity_id = entity_id
|
|
|
|
def _collect_state(self) -> None:
|
|
if self._collect and _RENDER_INFO in self._hass.data:
|
|
self._hass.data[_RENDER_INFO].entities.add(self._entity_id)
|
|
|
|
# Jinja will try __getitem__ first and it avoids the need
|
|
# to call is_safe_attribute
|
|
def __getitem__(self, item):
|
|
"""Return a property as an attribute for jinja."""
|
|
if item in _COLLECTABLE_STATE_ATTRIBUTES:
|
|
# _collect_state inlined here for performance
|
|
if self._collect and _RENDER_INFO in self._hass.data:
|
|
self._hass.data[_RENDER_INFO].entities.add(self._entity_id)
|
|
return getattr(self._state, item)
|
|
if item == "entity_id":
|
|
return self._entity_id
|
|
if item == "state_with_unit":
|
|
return self.state_with_unit
|
|
raise KeyError
|
|
|
|
@property
|
|
def entity_id(self):
|
|
"""Wrap State.entity_id.
|
|
|
|
Intentionally does not collect state
|
|
"""
|
|
return self._entity_id
|
|
|
|
@property
|
|
def state(self):
|
|
"""Wrap State.state."""
|
|
self._collect_state()
|
|
return self._state.state
|
|
|
|
@property
|
|
def attributes(self):
|
|
"""Wrap State.attributes."""
|
|
self._collect_state()
|
|
return self._state.attributes
|
|
|
|
@property
|
|
def last_changed(self):
|
|
"""Wrap State.last_changed."""
|
|
self._collect_state()
|
|
return self._state.last_changed
|
|
|
|
@property
|
|
def last_updated(self):
|
|
"""Wrap State.last_updated."""
|
|
self._collect_state()
|
|
return self._state.last_updated
|
|
|
|
@property
|
|
def context(self):
|
|
"""Wrap State.context."""
|
|
self._collect_state()
|
|
return self._state.context
|
|
|
|
@property
|
|
def domain(self):
|
|
"""Wrap State.domain."""
|
|
self._collect_state()
|
|
return self._state.domain
|
|
|
|
@property
|
|
def object_id(self):
|
|
"""Wrap State.object_id."""
|
|
self._collect_state()
|
|
return self._state.object_id
|
|
|
|
@property
|
|
def name(self):
|
|
"""Wrap State.name."""
|
|
self._collect_state()
|
|
return self._state.name
|
|
|
|
@property
|
|
def state_with_unit(self) -> str:
|
|
"""Return the state concatenated with the unit if available."""
|
|
self._collect_state()
|
|
unit = self._state.attributes.get(ATTR_UNIT_OF_MEASUREMENT)
|
|
return f"{self._state.state} {unit}" if unit else self._state.state
|
|
|
|
def __eq__(self, other: Any) -> bool:
|
|
"""Ensure we collect on equality check."""
|
|
self._collect_state()
|
|
return self._state.__eq__(other)
|
|
|
|
|
|
class TemplateState(TemplateStateBase):
|
|
"""Class to represent a state object in a template."""
|
|
|
|
__slots__ = ("_state",)
|
|
|
|
# Inheritance is done so functions that check against State keep working
|
|
def __init__(self, hass: HomeAssistant, state: State, collect: bool = True) -> None:
|
|
"""Initialize template state."""
|
|
super().__init__(hass, collect, state.entity_id)
|
|
self._state = state
|
|
|
|
def __repr__(self) -> str:
|
|
"""Representation of Template State."""
|
|
return f"<template TemplateState({self._state!r})>"
|
|
|
|
|
|
class TemplateStateFromEntityId(TemplateStateBase):
|
|
"""Class to represent a state object in a template."""
|
|
|
|
def __init__(
|
|
self, hass: HomeAssistant, entity_id: str, collect: bool = True
|
|
) -> None:
|
|
"""Initialize template state."""
|
|
super().__init__(hass, collect, entity_id)
|
|
|
|
@property
|
|
def _state(self) -> State: # type: ignore[override] # mypy issue 4125
|
|
state = self._hass.states.get(self._entity_id)
|
|
if not state:
|
|
state = State(self._entity_id, STATE_UNKNOWN)
|
|
return state
|
|
|
|
def __repr__(self) -> str:
|
|
"""Representation of Template State."""
|
|
return f"<template TemplateStateFromEntityId({self._entity_id})>"
|
|
|
|
|
|
def _collect_state(hass: HomeAssistant, entity_id: str) -> None:
|
|
if (entity_collect := hass.data.get(_RENDER_INFO)) is not None:
|
|
entity_collect.entities.add(entity_id)
|
|
|
|
|
|
def _state_generator(hass: HomeAssistant, domain: str | None) -> Generator:
|
|
"""State generator for a domain or all states."""
|
|
for state in sorted(hass.states.async_all(domain), key=attrgetter("entity_id")):
|
|
yield TemplateState(hass, state, collect=False)
|
|
|
|
|
|
def _get_state_if_valid(hass: HomeAssistant, entity_id: str) -> TemplateState | None:
|
|
state = hass.states.get(entity_id)
|
|
if state is None and not valid_entity_id(entity_id):
|
|
raise TemplateError(f"Invalid entity ID '{entity_id}'") # type: ignore[arg-type]
|
|
return _get_template_state_from_state(hass, entity_id, state)
|
|
|
|
|
|
def _get_state(hass: HomeAssistant, entity_id: str) -> TemplateState | None:
|
|
return _get_template_state_from_state(hass, entity_id, hass.states.get(entity_id))
|
|
|
|
|
|
def _get_template_state_from_state(
|
|
hass: HomeAssistant, entity_id: str, state: State | None
|
|
) -> TemplateState | None:
|
|
if state is None:
|
|
# Only need to collect if none, if not none collect first actual
|
|
# access to the state properties in the state wrapper.
|
|
_collect_state(hass, entity_id)
|
|
return None
|
|
return TemplateState(hass, state)
|
|
|
|
|
|
def _resolve_state(
|
|
hass: HomeAssistant, entity_id_or_state: Any
|
|
) -> State | TemplateState | None:
|
|
"""Return state or entity_id if given."""
|
|
if isinstance(entity_id_or_state, State):
|
|
return entity_id_or_state
|
|
if isinstance(entity_id_or_state, str):
|
|
return _get_state(hass, entity_id_or_state)
|
|
return None
|
|
|
|
|
|
def result_as_boolean(template_result: Any | None) -> bool:
|
|
"""Convert the template result to a boolean.
|
|
|
|
True/not 0/'1'/'true'/'yes'/'on'/'enable' are considered truthy
|
|
False/0/None/'0'/'false'/'no'/'off'/'disable' are considered falsy
|
|
|
|
"""
|
|
if template_result is None:
|
|
return False
|
|
|
|
try:
|
|
# Import here, not at top-level to avoid circular import
|
|
from . import config_validation as cv # pylint: disable=import-outside-toplevel
|
|
|
|
return cv.boolean(template_result)
|
|
except vol.Invalid:
|
|
return False
|
|
|
|
|
|
def expand(hass: HomeAssistant, *args: Any) -> Iterable[State]:
|
|
"""Expand out any groups and zones into entity states."""
|
|
# circular import.
|
|
from . import entity as entity_helper # pylint: disable=import-outside-toplevel
|
|
|
|
search = list(args)
|
|
found = {}
|
|
while search:
|
|
entity = search.pop()
|
|
if isinstance(entity, str):
|
|
entity_id = entity
|
|
if (entity := _get_state(hass, entity)) is None:
|
|
continue
|
|
elif isinstance(entity, State):
|
|
entity_id = entity.entity_id
|
|
elif isinstance(entity, collections.abc.Iterable):
|
|
search += entity
|
|
continue
|
|
else:
|
|
# ignore other types
|
|
continue
|
|
|
|
if entity_id.startswith(_GROUP_DOMAIN_PREFIX) or (
|
|
(source := entity_helper.entity_sources(hass).get(entity_id))
|
|
and source["domain"] == "group"
|
|
):
|
|
# Collect state will be called in here since it's wrapped
|
|
if group_entities := entity.attributes.get(ATTR_ENTITY_ID):
|
|
search += group_entities
|
|
elif entity_id.startswith(_ZONE_DOMAIN_PREFIX):
|
|
if zone_entities := entity.attributes.get(ATTR_PERSONS):
|
|
search += zone_entities
|
|
else:
|
|
_collect_state(hass, entity_id)
|
|
found[entity_id] = entity
|
|
|
|
return sorted(found.values(), key=lambda a: a.entity_id)
|
|
|
|
|
|
def device_entities(hass: HomeAssistant, _device_id: str) -> Iterable[str]:
|
|
"""Get entity ids for entities tied to a device."""
|
|
entity_reg = entity_registry.async_get(hass)
|
|
entries = entity_registry.async_entries_for_device(entity_reg, _device_id)
|
|
return [entry.entity_id for entry in entries]
|
|
|
|
|
|
def integration_entities(hass: HomeAssistant, entry_name: str) -> Iterable[str]:
|
|
"""
|
|
Get entity ids for entities tied to an integration/domain.
|
|
|
|
Provide entry_name as domain to get all entity id's for a integration/domain
|
|
or provide a config entry title for filtering between instances of the same integration.
|
|
"""
|
|
# first try if this is a config entry match
|
|
conf_entry = next(
|
|
(
|
|
entry.entry_id
|
|
for entry in hass.config_entries.async_entries()
|
|
if entry.title == entry_name
|
|
),
|
|
None,
|
|
)
|
|
if conf_entry is not None:
|
|
ent_reg = entity_registry.async_get(hass)
|
|
entries = entity_registry.async_entries_for_config_entry(ent_reg, conf_entry)
|
|
return [entry.entity_id for entry in entries]
|
|
|
|
# fallback to just returning all entities for a domain
|
|
# pylint: disable=import-outside-toplevel
|
|
from .entity import entity_sources
|
|
|
|
return [
|
|
entity_id
|
|
for entity_id, info in entity_sources(hass).items()
|
|
if info["domain"] == entry_name
|
|
]
|
|
|
|
|
|
def device_id(hass: HomeAssistant, entity_id_or_device_name: str) -> str | None:
|
|
"""Get a device ID from an entity ID or device name."""
|
|
entity_reg = entity_registry.async_get(hass)
|
|
entity = entity_reg.async_get(entity_id_or_device_name)
|
|
if entity is not None:
|
|
return entity.device_id
|
|
|
|
dev_reg = device_registry.async_get(hass)
|
|
return next(
|
|
(
|
|
id
|
|
for id, device in dev_reg.devices.items()
|
|
if (name := device.name_by_user or device.name)
|
|
and (str(entity_id_or_device_name) == name)
|
|
),
|
|
None,
|
|
)
|
|
|
|
|
|
def device_attr(hass: HomeAssistant, device_or_entity_id: str, attr_name: str) -> Any:
|
|
"""Get the device specific attribute."""
|
|
device_reg = device_registry.async_get(hass)
|
|
if not isinstance(device_or_entity_id, str):
|
|
raise TemplateError("Must provide a device or entity ID")
|
|
device = None
|
|
if (
|
|
"." in device_or_entity_id
|
|
and (_device_id := device_id(hass, device_or_entity_id)) is not None
|
|
):
|
|
device = device_reg.async_get(_device_id)
|
|
elif "." not in device_or_entity_id:
|
|
device = device_reg.async_get(device_or_entity_id)
|
|
if device is None or not hasattr(device, attr_name):
|
|
return None
|
|
return getattr(device, attr_name)
|
|
|
|
|
|
def is_device_attr(
|
|
hass: HomeAssistant, device_or_entity_id: str, attr_name: str, attr_value: Any
|
|
) -> bool:
|
|
"""Test if a device's attribute is a specific value."""
|
|
return bool(device_attr(hass, device_or_entity_id, attr_name) == attr_value)
|
|
|
|
|
|
def area_id(hass: HomeAssistant, lookup_value: str) -> str | None:
|
|
"""Get the area ID from an area name, device id, or entity id."""
|
|
area_reg = area_registry.async_get(hass)
|
|
if area := area_reg.async_get_area_by_name(str(lookup_value)):
|
|
return area.id
|
|
|
|
ent_reg = entity_registry.async_get(hass)
|
|
dev_reg = device_registry.async_get(hass)
|
|
# Import here, not at top-level to avoid circular import
|
|
from . import config_validation as cv # pylint: disable=import-outside-toplevel
|
|
|
|
try:
|
|
cv.entity_id(lookup_value)
|
|
except vol.Invalid:
|
|
pass
|
|
else:
|
|
if entity := ent_reg.async_get(lookup_value):
|
|
# If entity has an area ID, return that
|
|
if entity.area_id:
|
|
return entity.area_id
|
|
# If entity has a device ID, return the area ID for the device
|
|
if entity.device_id and (device := dev_reg.async_get(entity.device_id)):
|
|
return device.area_id
|
|
|
|
# Check if this could be a device ID
|
|
if device := dev_reg.async_get(lookup_value):
|
|
return device.area_id
|
|
|
|
return None
|
|
|
|
|
|
def _get_area_name(area_reg: area_registry.AreaRegistry, valid_area_id: str) -> str:
|
|
"""Get area name from valid area ID."""
|
|
area = area_reg.async_get_area(valid_area_id)
|
|
assert area
|
|
return area.name
|
|
|
|
|
|
def area_name(hass: HomeAssistant, lookup_value: str) -> str | None:
|
|
"""Get the area name from an area id, device id, or entity id."""
|
|
area_reg = area_registry.async_get(hass)
|
|
if area := area_reg.async_get_area(lookup_value):
|
|
return area.name
|
|
|
|
dev_reg = device_registry.async_get(hass)
|
|
ent_reg = entity_registry.async_get(hass)
|
|
# Import here, not at top-level to avoid circular import
|
|
from . import config_validation as cv # pylint: disable=import-outside-toplevel
|
|
|
|
try:
|
|
cv.entity_id(lookup_value)
|
|
except vol.Invalid:
|
|
pass
|
|
else:
|
|
if entity := ent_reg.async_get(lookup_value):
|
|
# If entity has an area ID, get the area name for that
|
|
if entity.area_id:
|
|
return _get_area_name(area_reg, entity.area_id)
|
|
# If entity has a device ID and the device exists with an area ID, get the
|
|
# area name for that
|
|
if (
|
|
entity.device_id
|
|
and (device := dev_reg.async_get(entity.device_id))
|
|
and device.area_id
|
|
):
|
|
return _get_area_name(area_reg, device.area_id)
|
|
|
|
if (device := dev_reg.async_get(lookup_value)) and device.area_id:
|
|
return _get_area_name(area_reg, device.area_id)
|
|
|
|
return None
|
|
|
|
|
|
def area_entities(hass: HomeAssistant, area_id_or_name: str) -> Iterable[str]:
|
|
"""Return entities for a given area ID or name."""
|
|
_area_id: str | None
|
|
# if area_name returns a value, we know the input was an ID, otherwise we
|
|
# assume it's a name, and if it's neither, we return early
|
|
if area_name(hass, area_id_or_name) is None:
|
|
_area_id = area_id(hass, area_id_or_name)
|
|
else:
|
|
_area_id = area_id_or_name
|
|
if _area_id is None:
|
|
return []
|
|
ent_reg = entity_registry.async_get(hass)
|
|
entity_ids = [
|
|
entry.entity_id
|
|
for entry in entity_registry.async_entries_for_area(ent_reg, _area_id)
|
|
]
|
|
dev_reg = device_registry.async_get(hass)
|
|
# We also need to add entities tied to a device in the area that don't themselves
|
|
# have an area specified since they inherit the area from the device.
|
|
entity_ids.extend(
|
|
[
|
|
entity.entity_id
|
|
for device in device_registry.async_entries_for_area(dev_reg, _area_id)
|
|
for entity in entity_registry.async_entries_for_device(ent_reg, device.id)
|
|
if entity.area_id is None
|
|
]
|
|
)
|
|
return entity_ids
|
|
|
|
|
|
def area_devices(hass: HomeAssistant, area_id_or_name: str) -> Iterable[str]:
|
|
"""Return device IDs for a given area ID or name."""
|
|
_area_id: str | None
|
|
# if area_name returns a value, we know the input was an ID, otherwise we
|
|
# assume it's a name, and if it's neither, we return early
|
|
if area_name(hass, area_id_or_name) is not None:
|
|
_area_id = area_id_or_name
|
|
else:
|
|
_area_id = area_id(hass, area_id_or_name)
|
|
if _area_id is None:
|
|
return []
|
|
dev_reg = device_registry.async_get(hass)
|
|
entries = device_registry.async_entries_for_area(dev_reg, _area_id)
|
|
return [entry.id for entry in entries]
|
|
|
|
|
|
def closest(hass, *args):
|
|
"""Find closest entity.
|
|
|
|
Closest to home:
|
|
closest(states)
|
|
closest(states.device_tracker)
|
|
closest('group.children')
|
|
closest(states.group.children)
|
|
|
|
Closest to a point:
|
|
closest(23.456, 23.456, 'group.children')
|
|
closest('zone.school', 'group.children')
|
|
closest(states.zone.school, 'group.children')
|
|
|
|
As a filter:
|
|
states | closest
|
|
states.device_tracker | closest
|
|
['group.children', states.device_tracker] | closest
|
|
'group.children' | closest(23.456, 23.456)
|
|
states.device_tracker | closest('zone.school')
|
|
'group.children' | closest(states.zone.school)
|
|
|
|
"""
|
|
if len(args) == 1:
|
|
latitude = hass.config.latitude
|
|
longitude = hass.config.longitude
|
|
entities = args[0]
|
|
|
|
elif len(args) == 2:
|
|
point_state = _resolve_state(hass, args[0])
|
|
|
|
if point_state is None:
|
|
_LOGGER.warning("Closest:Unable to find state %s", args[0])
|
|
return None
|
|
if not loc_helper.has_location(point_state):
|
|
_LOGGER.warning(
|
|
"Closest:State does not contain valid location: %s", point_state
|
|
)
|
|
return None
|
|
|
|
latitude = point_state.attributes.get(ATTR_LATITUDE)
|
|
longitude = point_state.attributes.get(ATTR_LONGITUDE)
|
|
|
|
entities = args[1]
|
|
|
|
else:
|
|
latitude = convert(args[0], float)
|
|
longitude = convert(args[1], float)
|
|
|
|
if latitude is None or longitude is None:
|
|
_LOGGER.warning(
|
|
"Closest:Received invalid coordinates: %s, %s", args[0], args[1]
|
|
)
|
|
return None
|
|
|
|
entities = args[2]
|
|
|
|
states = expand(hass, entities)
|
|
|
|
# state will already be wrapped here
|
|
return loc_helper.closest(latitude, longitude, states)
|
|
|
|
|
|
def closest_filter(hass, *args):
|
|
"""Call closest as a filter. Need to reorder arguments."""
|
|
new_args = list(args[1:])
|
|
new_args.append(args[0])
|
|
return closest(hass, *new_args)
|
|
|
|
|
|
def distance(hass, *args):
|
|
"""Calculate distance.
|
|
|
|
Will calculate distance from home to a point or between points.
|
|
Points can be passed in using state objects or lat/lng coordinates.
|
|
"""
|
|
locations = []
|
|
|
|
to_process = list(args)
|
|
|
|
while to_process:
|
|
value = to_process.pop(0)
|
|
if isinstance(value, str) and not valid_entity_id(value):
|
|
point_state = None
|
|
else:
|
|
point_state = _resolve_state(hass, value)
|
|
|
|
if point_state is None:
|
|
# We expect this and next value to be lat&lng
|
|
if not to_process:
|
|
_LOGGER.warning(
|
|
"Distance:Expected latitude and longitude, got %s", value
|
|
)
|
|
return None
|
|
|
|
value_2 = to_process.pop(0)
|
|
latitude = convert(value, float)
|
|
longitude = convert(value_2, float)
|
|
|
|
if latitude is None or longitude is None:
|
|
_LOGGER.warning(
|
|
"Distance:Unable to process latitude and longitude: %s, %s",
|
|
value,
|
|
value_2,
|
|
)
|
|
return None
|
|
|
|
else:
|
|
if not loc_helper.has_location(point_state):
|
|
_LOGGER.warning(
|
|
"Distance:State does not contain valid location: %s", point_state
|
|
)
|
|
return None
|
|
|
|
latitude = point_state.attributes.get(ATTR_LATITUDE)
|
|
longitude = point_state.attributes.get(ATTR_LONGITUDE)
|
|
|
|
locations.append((latitude, longitude))
|
|
|
|
if len(locations) == 1:
|
|
return hass.config.distance(*locations[0])
|
|
|
|
return hass.config.units.length(
|
|
loc_util.distance(*locations[0] + locations[1]), LENGTH_METERS
|
|
)
|
|
|
|
|
|
def is_state(hass: HomeAssistant, entity_id: str, state: State) -> bool:
|
|
"""Test if a state is a specific value."""
|
|
state_obj = _get_state(hass, entity_id)
|
|
return state_obj is not None and state_obj.state == state
|
|
|
|
|
|
def is_state_attr(hass: HomeAssistant, entity_id: str, name: str, value: Any) -> bool:
|
|
"""Test if a state's attribute is a specific value."""
|
|
attr = state_attr(hass, entity_id, name)
|
|
return attr is not None and attr == value
|
|
|
|
|
|
def state_attr(hass: HomeAssistant, entity_id: str, name: str) -> Any:
|
|
"""Get a specific attribute from a state."""
|
|
if (state_obj := _get_state(hass, entity_id)) is not None:
|
|
return state_obj.attributes.get(name)
|
|
return None
|
|
|
|
|
|
def now(hass: HomeAssistant) -> datetime:
|
|
"""Record fetching now."""
|
|
if (render_info := hass.data.get(_RENDER_INFO)) is not None:
|
|
render_info.has_time = True
|
|
|
|
return dt_util.now()
|
|
|
|
|
|
def utcnow(hass: HomeAssistant) -> datetime:
|
|
"""Record fetching utcnow."""
|
|
if (render_info := hass.data.get(_RENDER_INFO)) is not None:
|
|
render_info.has_time = True
|
|
|
|
return dt_util.utcnow()
|
|
|
|
|
|
def raise_no_default(function, value):
|
|
"""Log warning if no default is specified."""
|
|
template, action = template_cv.get() or ("", "rendering or compiling")
|
|
raise ValueError(
|
|
f"Template error: {function} got invalid input '{value}' when {action} template '{template}' "
|
|
"but no default was specified"
|
|
)
|
|
|
|
|
|
def forgiving_round(value, precision=0, method="common", default=_SENTINEL):
|
|
"""Filter to round a value."""
|
|
try:
|
|
# support rounding methods like jinja
|
|
multiplier = float(10**precision)
|
|
if method == "ceil":
|
|
value = math.ceil(float(value) * multiplier) / multiplier
|
|
elif method == "floor":
|
|
value = math.floor(float(value) * multiplier) / multiplier
|
|
elif method == "half":
|
|
value = round(float(value) * 2) / 2
|
|
else:
|
|
# if method is common or something else, use common rounding
|
|
value = round(float(value), precision)
|
|
return int(value) if precision == 0 else value
|
|
except (ValueError, TypeError):
|
|
# If value can't be converted to float
|
|
if default is _SENTINEL:
|
|
raise_no_default("round", value)
|
|
return default
|
|
|
|
|
|
def multiply(value, amount, default=_SENTINEL):
|
|
"""Filter to convert value to float and multiply it."""
|
|
try:
|
|
return float(value) * amount
|
|
except (ValueError, TypeError):
|
|
# If value can't be converted to float
|
|
if default is _SENTINEL:
|
|
raise_no_default("multiply", value)
|
|
return default
|
|
|
|
|
|
def logarithm(value, base=math.e, default=_SENTINEL):
|
|
"""Filter and function to get logarithm of the value with a specific base."""
|
|
try:
|
|
base_float = float(base)
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("log", base)
|
|
return default
|
|
try:
|
|
value_float = float(value)
|
|
return math.log(value_float, base_float)
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("log", value)
|
|
return default
|
|
|
|
|
|
def sine(value, default=_SENTINEL):
|
|
"""Filter and function to get sine of the value."""
|
|
try:
|
|
return math.sin(float(value))
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("sin", value)
|
|
return default
|
|
|
|
|
|
def cosine(value, default=_SENTINEL):
|
|
"""Filter and function to get cosine of the value."""
|
|
try:
|
|
return math.cos(float(value))
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("cos", value)
|
|
return default
|
|
|
|
|
|
def tangent(value, default=_SENTINEL):
|
|
"""Filter and function to get tangent of the value."""
|
|
try:
|
|
return math.tan(float(value))
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("tan", value)
|
|
return default
|
|
|
|
|
|
def arc_sine(value, default=_SENTINEL):
|
|
"""Filter and function to get arc sine of the value."""
|
|
try:
|
|
return math.asin(float(value))
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("asin", value)
|
|
return default
|
|
|
|
|
|
def arc_cosine(value, default=_SENTINEL):
|
|
"""Filter and function to get arc cosine of the value."""
|
|
try:
|
|
return math.acos(float(value))
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("acos", value)
|
|
return default
|
|
|
|
|
|
def arc_tangent(value, default=_SENTINEL):
|
|
"""Filter and function to get arc tangent of the value."""
|
|
try:
|
|
return math.atan(float(value))
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("atan", value)
|
|
return default
|
|
|
|
|
|
def arc_tangent2(*args, default=_SENTINEL):
|
|
"""Filter and function to calculate four quadrant arc tangent of y / x.
|
|
|
|
The parameters to atan2 may be passed either in an iterable or as separate arguments
|
|
The default value may be passed either as a positional or in a keyword argument
|
|
"""
|
|
try:
|
|
if 1 <= len(args) <= 2 and isinstance(args[0], (list, tuple)):
|
|
if len(args) == 2 and default is _SENTINEL:
|
|
# Default value passed as a positional argument
|
|
default = args[1]
|
|
args = args[0]
|
|
elif len(args) == 3 and default is _SENTINEL:
|
|
# Default value passed as a positional argument
|
|
default = args[2]
|
|
|
|
return math.atan2(float(args[0]), float(args[1]))
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("atan2", args)
|
|
return default
|
|
|
|
|
|
def square_root(value, default=_SENTINEL):
|
|
"""Filter and function to get square root of the value."""
|
|
try:
|
|
return math.sqrt(float(value))
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("sqrt", value)
|
|
return default
|
|
|
|
|
|
def timestamp_custom(value, date_format=DATE_STR_FORMAT, local=True, default=_SENTINEL):
|
|
"""Filter to convert given timestamp to format."""
|
|
try:
|
|
date = dt_util.utc_from_timestamp(value)
|
|
|
|
if local:
|
|
date = dt_util.as_local(date)
|
|
|
|
return date.strftime(date_format)
|
|
except (ValueError, TypeError):
|
|
# If timestamp can't be converted
|
|
if default is _SENTINEL:
|
|
raise_no_default("timestamp_custom", value)
|
|
return default
|
|
|
|
|
|
def timestamp_local(value, default=_SENTINEL):
|
|
"""Filter to convert given timestamp to local date/time."""
|
|
try:
|
|
return dt_util.as_local(dt_util.utc_from_timestamp(value)).isoformat()
|
|
except (ValueError, TypeError):
|
|
# If timestamp can't be converted
|
|
if default is _SENTINEL:
|
|
raise_no_default("timestamp_local", value)
|
|
return default
|
|
|
|
|
|
def timestamp_utc(value, default=_SENTINEL):
|
|
"""Filter to convert given timestamp to UTC date/time."""
|
|
try:
|
|
return dt_util.utc_from_timestamp(value).isoformat()
|
|
except (ValueError, TypeError):
|
|
# If timestamp can't be converted
|
|
if default is _SENTINEL:
|
|
raise_no_default("timestamp_utc", value)
|
|
return default
|
|
|
|
|
|
def forgiving_as_timestamp(value, default=_SENTINEL):
|
|
"""Filter and function which tries to convert value to timestamp."""
|
|
try:
|
|
return dt_util.as_timestamp(value)
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("as_timestamp", value)
|
|
return default
|
|
|
|
|
|
def as_datetime(value):
|
|
"""Filter and to convert a time string or UNIX timestamp to datetime object."""
|
|
try:
|
|
# Check for a valid UNIX timestamp string, int or float
|
|
timestamp = float(value)
|
|
return dt_util.utc_from_timestamp(timestamp)
|
|
except ValueError:
|
|
return dt_util.parse_datetime(value)
|
|
|
|
|
|
def as_timedelta(value: str) -> timedelta | None:
|
|
"""Parse a ISO8601 duration like 'PT10M' to a timedelta."""
|
|
return dt_util.parse_duration(value)
|
|
|
|
|
|
def strptime(string, fmt, default=_SENTINEL):
|
|
"""Parse a time string to datetime."""
|
|
try:
|
|
return datetime.strptime(string, fmt)
|
|
except (ValueError, AttributeError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("strptime", string)
|
|
return default
|
|
|
|
|
|
def fail_when_undefined(value):
|
|
"""Filter to force a failure when the value is undefined."""
|
|
if isinstance(value, jinja2.Undefined):
|
|
value()
|
|
return value
|
|
|
|
|
|
def min_max_from_filter(builtin_filter: Any, name: str) -> Any:
|
|
"""
|
|
Convert a built-in min/max Jinja filter to a global function.
|
|
|
|
The parameters may be passed as an iterable or as separate arguments.
|
|
"""
|
|
|
|
@pass_environment
|
|
@wraps(builtin_filter)
|
|
def wrapper(environment: jinja2.Environment, *args: Any, **kwargs: Any) -> Any:
|
|
if len(args) == 0:
|
|
raise TypeError(f"{name} expected at least 1 argument, got 0")
|
|
|
|
if len(args) == 1:
|
|
if isinstance(args[0], Iterable):
|
|
return builtin_filter(environment, args[0], **kwargs)
|
|
|
|
raise TypeError(f"'{type(args[0]).__name__}' object is not iterable")
|
|
|
|
return builtin_filter(environment, args, **kwargs)
|
|
|
|
return pass_environment(wrapper)
|
|
|
|
|
|
def average(*args: Any) -> float:
|
|
"""
|
|
Filter and function to calculate the arithmetic mean of an iterable or of two or more arguments.
|
|
|
|
The parameters may be passed as an iterable or as separate arguments.
|
|
"""
|
|
if len(args) == 0:
|
|
raise TypeError("average expected at least 1 argument, got 0")
|
|
|
|
if len(args) == 1:
|
|
if isinstance(args[0], Iterable):
|
|
return statistics.fmean(args[0])
|
|
|
|
raise TypeError(f"'{type(args[0]).__name__}' object is not iterable")
|
|
|
|
return statistics.fmean(args)
|
|
|
|
|
|
def forgiving_float(value, default=_SENTINEL):
|
|
"""Try to convert value to a float."""
|
|
try:
|
|
return float(value)
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("float", value)
|
|
return default
|
|
|
|
|
|
def forgiving_float_filter(value, default=_SENTINEL):
|
|
"""Try to convert value to a float."""
|
|
try:
|
|
return float(value)
|
|
except (ValueError, TypeError):
|
|
if default is _SENTINEL:
|
|
raise_no_default("float", value)
|
|
return default
|
|
|
|
|
|
def forgiving_int(value, default=_SENTINEL, base=10):
|
|
"""Try to convert value to an int, and raise if it fails."""
|
|
result = jinja2.filters.do_int(value, default=default, base=base)
|
|
if result is _SENTINEL:
|
|
raise_no_default("int", value)
|
|
return result
|
|
|
|
|
|
def forgiving_int_filter(value, default=_SENTINEL, base=10):
|
|
"""Try to convert value to an int, and raise if it fails."""
|
|
result = jinja2.filters.do_int(value, default=default, base=base)
|
|
if result is _SENTINEL:
|
|
raise_no_default("int", value)
|
|
return result
|
|
|
|
|
|
def is_number(value):
|
|
"""Try to convert value to a float."""
|
|
try:
|
|
fvalue = float(value)
|
|
except (ValueError, TypeError):
|
|
return False
|
|
if math.isnan(fvalue) or math.isinf(fvalue):
|
|
return False
|
|
return True
|
|
|
|
|
|
def regex_match(value, find="", ignorecase=False):
|
|
"""Match value using regex."""
|
|
if not isinstance(value, str):
|
|
value = str(value)
|
|
flags = re.I if ignorecase else 0
|
|
return bool(re.match(find, value, flags))
|
|
|
|
|
|
def regex_replace(value="", find="", replace="", ignorecase=False):
|
|
"""Replace using regex."""
|
|
if not isinstance(value, str):
|
|
value = str(value)
|
|
flags = re.I if ignorecase else 0
|
|
regex = re.compile(find, flags)
|
|
return regex.sub(replace, value)
|
|
|
|
|
|
def regex_search(value, find="", ignorecase=False):
|
|
"""Search using regex."""
|
|
if not isinstance(value, str):
|
|
value = str(value)
|
|
flags = re.I if ignorecase else 0
|
|
return bool(re.search(find, value, flags))
|
|
|
|
|
|
def regex_findall_index(value, find="", index=0, ignorecase=False):
|
|
"""Find all matches using regex and then pick specific match index."""
|
|
return regex_findall(value, find, ignorecase)[index]
|
|
|
|
|
|
def regex_findall(value, find="", ignorecase=False):
|
|
"""Find all matches using regex."""
|
|
if not isinstance(value, str):
|
|
value = str(value)
|
|
flags = re.I if ignorecase else 0
|
|
return re.findall(find, value, flags)
|
|
|
|
|
|
def bitwise_and(first_value, second_value):
|
|
"""Perform a bitwise and operation."""
|
|
return first_value & second_value
|
|
|
|
|
|
def bitwise_or(first_value, second_value):
|
|
"""Perform a bitwise or operation."""
|
|
return first_value | second_value
|
|
|
|
|
|
def struct_pack(value: Any | None, format_string: str) -> bytes | None:
|
|
"""Pack an object into a bytes object."""
|
|
try:
|
|
return pack(format_string, value)
|
|
except StructError:
|
|
_LOGGER.warning(
|
|
"Template warning: 'pack' unable to pack object '%s' with type '%s' and format_string '%s' see https://docs.python.org/3/library/struct.html for more information",
|
|
str(value),
|
|
type(value).__name__,
|
|
format_string,
|
|
)
|
|
return None
|
|
|
|
|
|
def struct_unpack(value: bytes, format_string: str, offset: int = 0) -> Any | None:
|
|
"""Unpack an object from bytes an return the first native object."""
|
|
try:
|
|
return unpack_from(format_string, value, offset)[0]
|
|
except StructError:
|
|
_LOGGER.warning(
|
|
"Template warning: 'unpack' unable to unpack object '%s' with format_string '%s' and offset %s see https://docs.python.org/3/library/struct.html for more information",
|
|
value,
|
|
format_string,
|
|
offset,
|
|
)
|
|
return None
|
|
|
|
|
|
def base64_encode(value):
|
|
"""Perform base64 encode."""
|
|
return base64.b64encode(value.encode("utf-8")).decode("utf-8")
|
|
|
|
|
|
def base64_decode(value):
|
|
"""Perform base64 denode."""
|
|
return base64.b64decode(value).decode("utf-8")
|
|
|
|
|
|
def ordinal(value):
|
|
"""Perform ordinal conversion."""
|
|
return str(value) + (
|
|
list(["th", "st", "nd", "rd"] + ["th"] * 6)[(int(str(value)[-1])) % 10]
|
|
if int(str(value)[-2:]) % 100 not in range(11, 14)
|
|
else "th"
|
|
)
|
|
|
|
|
|
def from_json(value):
|
|
"""Convert a JSON string to an object."""
|
|
return json_loads(value)
|
|
|
|
|
|
def to_json(value, ensure_ascii=True):
|
|
"""Convert an object to a JSON string."""
|
|
return json.dumps(value, ensure_ascii=ensure_ascii)
|
|
|
|
|
|
@pass_context
|
|
def random_every_time(context, values):
|
|
"""Choose a random value.
|
|
|
|
Unlike Jinja's random filter,
|
|
this is context-dependent to avoid caching the chosen value.
|
|
"""
|
|
return random.choice(values)
|
|
|
|
|
|
def today_at(time_str: str = "") -> datetime:
|
|
"""Record fetching now where the time has been replaced with value."""
|
|
today = dt_util.start_of_local_day()
|
|
if not time_str:
|
|
return today
|
|
|
|
if (time_today := dt_util.parse_time(time_str)) is None:
|
|
raise ValueError(
|
|
f"could not convert {type(time_str).__name__} to datetime: '{time_str}'"
|
|
)
|
|
|
|
return datetime.combine(today, time_today, today.tzinfo)
|
|
|
|
|
|
def relative_time(value):
|
|
"""
|
|
Take a datetime and return its "age" as a string.
|
|
|
|
The age can be in second, minute, hour, day, month or year. Only the
|
|
biggest unit is considered, e.g. if it's 2 days and 3 hours, "2 days" will
|
|
be returned.
|
|
Make sure date is not in the future, or else it will return None.
|
|
|
|
If the input are not a datetime object the input will be returned unmodified.
|
|
"""
|
|
if not isinstance(value, datetime):
|
|
return value
|
|
if not value.tzinfo:
|
|
value = dt_util.as_local(value)
|
|
if dt_util.now() < value:
|
|
return value
|
|
return dt_util.get_age(value)
|
|
|
|
|
|
def urlencode(value):
|
|
"""Urlencode dictionary and return as UTF-8 string."""
|
|
return urllib_urlencode(value).encode("utf-8")
|
|
|
|
|
|
def slugify(value, separator="_"):
|
|
"""Convert a string into a slug, such as what is used for entity ids."""
|
|
return slugify_util(value, separator=separator)
|
|
|
|
|
|
def iif(
|
|
value: Any, if_true: Any = True, if_false: Any = False, if_none: Any = _SENTINEL
|
|
) -> Any:
|
|
"""Immediate if function/filter that allow for common if/else constructs.
|
|
|
|
https://en.wikipedia.org/wiki/IIf
|
|
|
|
Examples:
|
|
{{ is_state("device_tracker.frenck", "home") | iif("yes", "no") }}
|
|
{{ iif(1==2, "yes", "no") }}
|
|
{{ (1 == 1) | iif("yes", "no") }}
|
|
"""
|
|
if value is None and if_none is not _SENTINEL:
|
|
return if_none
|
|
if bool(value):
|
|
return if_true
|
|
return if_false
|
|
|
|
|
|
@contextmanager
|
|
def set_template(template_str: str, action: str) -> Generator:
|
|
"""Store template being parsed or rendered in a Contextvar to aid error handling."""
|
|
template_cv.set((template_str, action))
|
|
try:
|
|
yield
|
|
finally:
|
|
template_cv.set(None)
|
|
|
|
|
|
def _render_with_context(
|
|
template_str: str, template: jinja2.Template, **kwargs: Any
|
|
) -> str:
|
|
"""Store template being rendered in a ContextVar to aid error handling."""
|
|
with set_template(template_str, "rendering"):
|
|
return template.render(**kwargs)
|
|
|
|
|
|
class LoggingUndefined(jinja2.Undefined):
|
|
"""Log on undefined variables."""
|
|
|
|
def _log_message(self):
|
|
template, action = template_cv.get() or ("", "rendering or compiling")
|
|
_LOGGER.warning(
|
|
"Template variable warning: %s when %s '%s'",
|
|
self._undefined_message,
|
|
action,
|
|
template,
|
|
)
|
|
|
|
def _fail_with_undefined_error(self, *args, **kwargs):
|
|
try:
|
|
return super()._fail_with_undefined_error(*args, **kwargs)
|
|
except self._undefined_exception as ex:
|
|
template, action = template_cv.get() or ("", "rendering or compiling")
|
|
_LOGGER.error(
|
|
"Template variable error: %s when %s '%s'",
|
|
self._undefined_message,
|
|
action,
|
|
template,
|
|
)
|
|
raise ex
|
|
|
|
def __str__(self):
|
|
"""Log undefined __str___."""
|
|
self._log_message()
|
|
return super().__str__()
|
|
|
|
def __iter__(self):
|
|
"""Log undefined __iter___."""
|
|
self._log_message()
|
|
return super().__iter__()
|
|
|
|
def __bool__(self):
|
|
"""Log undefined __bool___."""
|
|
self._log_message()
|
|
return super().__bool__()
|
|
|
|
|
|
class TemplateEnvironment(ImmutableSandboxedEnvironment):
|
|
"""The Home Assistant template environment."""
|
|
|
|
def __init__(self, hass, limited=False, strict=False):
|
|
"""Initialise template environment."""
|
|
if not strict:
|
|
undefined = LoggingUndefined
|
|
else:
|
|
undefined = jinja2.StrictUndefined
|
|
super().__init__(undefined=undefined)
|
|
self.hass = hass
|
|
self.template_cache = weakref.WeakValueDictionary()
|
|
self.filters["round"] = forgiving_round
|
|
self.filters["multiply"] = multiply
|
|
self.filters["log"] = logarithm
|
|
self.filters["sin"] = sine
|
|
self.filters["cos"] = cosine
|
|
self.filters["tan"] = tangent
|
|
self.filters["asin"] = arc_sine
|
|
self.filters["acos"] = arc_cosine
|
|
self.filters["atan"] = arc_tangent
|
|
self.filters["atan2"] = arc_tangent2
|
|
self.filters["sqrt"] = square_root
|
|
self.filters["as_datetime"] = as_datetime
|
|
self.filters["as_timedelta"] = as_timedelta
|
|
self.filters["as_timestamp"] = forgiving_as_timestamp
|
|
self.filters["today_at"] = today_at
|
|
self.filters["as_local"] = dt_util.as_local
|
|
self.filters["timestamp_custom"] = timestamp_custom
|
|
self.filters["timestamp_local"] = timestamp_local
|
|
self.filters["timestamp_utc"] = timestamp_utc
|
|
self.filters["to_json"] = to_json
|
|
self.filters["from_json"] = from_json
|
|
self.filters["is_defined"] = fail_when_undefined
|
|
self.filters["average"] = average
|
|
self.filters["random"] = random_every_time
|
|
self.filters["base64_encode"] = base64_encode
|
|
self.filters["base64_decode"] = base64_decode
|
|
self.filters["ordinal"] = ordinal
|
|
self.filters["regex_match"] = regex_match
|
|
self.filters["regex_replace"] = regex_replace
|
|
self.filters["regex_search"] = regex_search
|
|
self.filters["regex_findall"] = regex_findall
|
|
self.filters["regex_findall_index"] = regex_findall_index
|
|
self.filters["bitwise_and"] = bitwise_and
|
|
self.filters["bitwise_or"] = bitwise_or
|
|
self.filters["pack"] = struct_pack
|
|
self.filters["unpack"] = struct_unpack
|
|
self.filters["ord"] = ord
|
|
self.filters["is_number"] = is_number
|
|
self.filters["float"] = forgiving_float_filter
|
|
self.filters["int"] = forgiving_int_filter
|
|
self.filters["relative_time"] = relative_time
|
|
self.filters["slugify"] = slugify
|
|
self.filters["iif"] = iif
|
|
self.globals["log"] = logarithm
|
|
self.globals["sin"] = sine
|
|
self.globals["cos"] = cosine
|
|
self.globals["tan"] = tangent
|
|
self.globals["sqrt"] = square_root
|
|
self.globals["pi"] = math.pi
|
|
self.globals["tau"] = math.pi * 2
|
|
self.globals["e"] = math.e
|
|
self.globals["asin"] = arc_sine
|
|
self.globals["acos"] = arc_cosine
|
|
self.globals["atan"] = arc_tangent
|
|
self.globals["atan2"] = arc_tangent2
|
|
self.globals["float"] = forgiving_float
|
|
self.globals["as_datetime"] = as_datetime
|
|
self.globals["as_local"] = dt_util.as_local
|
|
self.globals["as_timedelta"] = as_timedelta
|
|
self.globals["as_timestamp"] = forgiving_as_timestamp
|
|
self.globals["today_at"] = today_at
|
|
self.globals["relative_time"] = relative_time
|
|
self.globals["timedelta"] = timedelta
|
|
self.globals["strptime"] = strptime
|
|
self.globals["urlencode"] = urlencode
|
|
self.globals["average"] = average
|
|
self.globals["max"] = min_max_from_filter(self.filters["max"], "max")
|
|
self.globals["min"] = min_max_from_filter(self.filters["min"], "min")
|
|
self.globals["is_number"] = is_number
|
|
self.globals["int"] = forgiving_int
|
|
self.globals["pack"] = struct_pack
|
|
self.globals["unpack"] = struct_unpack
|
|
self.globals["slugify"] = slugify
|
|
self.globals["iif"] = iif
|
|
self.tests["is_number"] = is_number
|
|
self.tests["match"] = regex_match
|
|
self.tests["search"] = regex_search
|
|
|
|
if hass is None:
|
|
return
|
|
|
|
# We mark these as a context functions to ensure they get
|
|
# evaluated fresh with every execution, rather than executed
|
|
# at compile time and the value stored. The context itself
|
|
# can be discarded, we only need to get at the hass object.
|
|
def hassfunction(func):
|
|
"""Wrap function that depend on hass."""
|
|
|
|
@wraps(func)
|
|
def wrapper(*args, **kwargs):
|
|
return func(hass, *args[1:], **kwargs)
|
|
|
|
return pass_context(wrapper)
|
|
|
|
self.globals["device_entities"] = hassfunction(device_entities)
|
|
self.filters["device_entities"] = pass_context(self.globals["device_entities"])
|
|
|
|
self.globals["device_attr"] = hassfunction(device_attr)
|
|
self.globals["is_device_attr"] = hassfunction(is_device_attr)
|
|
|
|
self.globals["device_id"] = hassfunction(device_id)
|
|
self.filters["device_id"] = pass_context(self.globals["device_id"])
|
|
|
|
self.globals["area_id"] = hassfunction(area_id)
|
|
self.filters["area_id"] = pass_context(self.globals["area_id"])
|
|
|
|
self.globals["area_name"] = hassfunction(area_name)
|
|
self.filters["area_name"] = pass_context(self.globals["area_name"])
|
|
|
|
self.globals["area_entities"] = hassfunction(area_entities)
|
|
self.filters["area_entities"] = pass_context(self.globals["area_entities"])
|
|
|
|
self.globals["area_devices"] = hassfunction(area_devices)
|
|
self.filters["area_devices"] = pass_context(self.globals["area_devices"])
|
|
|
|
self.globals["integration_entities"] = hassfunction(integration_entities)
|
|
self.filters["integration_entities"] = pass_context(
|
|
self.globals["integration_entities"]
|
|
)
|
|
|
|
if limited:
|
|
# Only device_entities is available to limited templates, mark other
|
|
# functions and filters as unsupported.
|
|
def unsupported(name):
|
|
def warn_unsupported(*args, **kwargs):
|
|
raise TemplateError(
|
|
f"Use of '{name}' is not supported in limited templates"
|
|
)
|
|
|
|
return warn_unsupported
|
|
|
|
hass_globals = [
|
|
"closest",
|
|
"distance",
|
|
"expand",
|
|
"is_state",
|
|
"is_state_attr",
|
|
"state_attr",
|
|
"states",
|
|
"utcnow",
|
|
"now",
|
|
"device_attr",
|
|
"is_device_attr",
|
|
"device_id",
|
|
"area_id",
|
|
"area_name",
|
|
]
|
|
hass_filters = ["closest", "expand", "device_id", "area_id", "area_name"]
|
|
for glob in hass_globals:
|
|
self.globals[glob] = unsupported(glob)
|
|
for filt in hass_filters:
|
|
self.filters[filt] = unsupported(filt)
|
|
return
|
|
|
|
self.globals["expand"] = hassfunction(expand)
|
|
self.filters["expand"] = pass_context(self.globals["expand"])
|
|
self.globals["closest"] = hassfunction(closest)
|
|
self.filters["closest"] = pass_context(hassfunction(closest_filter))
|
|
self.globals["distance"] = hassfunction(distance)
|
|
self.globals["is_state"] = hassfunction(is_state)
|
|
self.globals["is_state_attr"] = hassfunction(is_state_attr)
|
|
self.globals["state_attr"] = hassfunction(state_attr)
|
|
self.globals["states"] = AllStates(hass)
|
|
self.globals["utcnow"] = hassfunction(utcnow)
|
|
self.globals["now"] = hassfunction(now)
|
|
|
|
def is_safe_callable(self, obj):
|
|
"""Test if callback is safe."""
|
|
return isinstance(obj, AllStates) or super().is_safe_callable(obj)
|
|
|
|
def is_safe_attribute(self, obj, attr, value):
|
|
"""Test if attribute is safe."""
|
|
if isinstance(obj, (AllStates, DomainStates, TemplateState)):
|
|
return attr[0] != "_"
|
|
|
|
if isinstance(obj, Namespace):
|
|
return True
|
|
|
|
return super().is_safe_attribute(obj, attr, value)
|
|
|
|
def compile(self, source, name=None, filename=None, raw=False, defer_init=False):
|
|
"""Compile the template."""
|
|
if (
|
|
name is not None
|
|
or filename is not None
|
|
or raw is not False
|
|
or defer_init is not False
|
|
):
|
|
# If there are any non-default keywords args, we do
|
|
# not cache. In prodution we currently do not have
|
|
# any instance of this.
|
|
return super().compile(source, name, filename, raw, defer_init)
|
|
|
|
if (cached := self.template_cache.get(source)) is None:
|
|
cached = self.template_cache[source] = super().compile(source)
|
|
|
|
return cached
|
|
|
|
|
|
_NO_HASS_ENV = TemplateEnvironment(None) # type: ignore[no-untyped-call]
|