core/homeassistant/helpers/entity_values.py

49 lines
1.4 KiB
Python

"""A class to hold entity values."""
from collections import OrderedDict
import fnmatch
import re
from typing import Dict
from homeassistant.core import split_entity_id
class EntityValues:
"""Class to store entity id based values."""
def __init__(self, exact: Dict = None, domain: Dict = None,
glob: Dict = None) -> None:
"""Initialize an EntityConfigDict."""
self._cache = {}
self._exact = exact
self._domain = domain
if glob is None:
compiled = None
else:
compiled = OrderedDict()
for key, value in glob.items():
compiled[re.compile(fnmatch.translate(key))] = value
self._glob = compiled
def get(self, entity_id):
"""Get config for an entity id."""
if entity_id in self._cache:
return self._cache[entity_id]
domain, _ = split_entity_id(entity_id)
result = self._cache[entity_id] = {}
if self._domain is not None and domain in self._domain:
result.update(self._domain[domain])
if self._glob is not None:
for pattern, values in self._glob.items():
if pattern.match(entity_id):
result.update(values)
if self._exact is not None and entity_id in self._exact:
result.update(self._exact[entity_id])
return result