"""Helper to check the configuration file."""
from __future__ import annotations
from collections import OrderedDict
import logging
import os
from pathlib import Path
from typing import NamedTuple, Self
import voluptuous as vol
from homeassistant import loader
from homeassistant.config import ( # type: ignore[attr-defined]
CONF_CORE,
CONF_PACKAGES,
CORE_CONFIG_SCHEMA,
YAML_CONFIG_FILE,
config_per_platform,
extract_domain_configs,
format_homeassistant_error,
format_schema_error,
load_yaml_config_file,
merge_packages_config,
)
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import HomeAssistantError
from homeassistant.requirements import (
RequirementsNotFound,
async_clear_install_history,
async_get_integration_with_requirements,
)
import homeassistant.util.yaml.loader as yaml_loader
from .typing import ConfigType
class CheckConfigError(NamedTuple):
"""Configuration check error."""
message: str
domain: str | None
config: ConfigType | None
class HomeAssistantConfig(OrderedDict):
"""Configuration result with errors attribute."""
def __init__(self) -> None:
"""Initialize HA config."""
super().__init__()
self.errors: list[CheckConfigError] = []
self.warnings: list[CheckConfigError] = []
def add_error(
self,
message: str,
domain: str | None = None,
config: ConfigType | None = None,
) -> Self:
"""Add an error."""
self.errors.append(CheckConfigError(str(message), domain, config))
return self
@property
def error_str(self) -> str:
"""Concatenate all errors to a string."""
return "\n".join([err.message for err in self.errors])
def add_warning(
self,
message: str,
domain: str | None = None,
config: ConfigType | None = None,
) -> Self:
"""Add a warning."""
self.warnings.append(CheckConfigError(str(message), domain, config))
return self
@property
def warning_str(self) -> str:
"""Concatenate all warnings to a string."""
return "\n".join([err.message for err in self.warnings])
async def async_check_ha_config_file( # noqa: C901
hass: HomeAssistant,
) -> HomeAssistantConfig:
"""Load and check if Home Assistant configuration file is valid.
This method is a coroutine.
"""
result = HomeAssistantConfig()
async_clear_install_history(hass)
def _pack_error(
hass: HomeAssistant,
package: str,
component: str,
config: ConfigType,
message: str,
) -> None:
"""Handle errors from packages."""
message = f"Setup of package '{package}' failed: {message}"
domain = f"homeassistant.packages.{package}.{component}"
pack_config = core_config[CONF_PACKAGES].get(package, config)
result.add_warning(message, domain, pack_config)
def _comp_error(
ex: vol.Invalid | HomeAssistantError,
domain: str,
component_config: ConfigType,
config_to_attach: ConfigType,
) -> None:
"""Handle errors from components."""
if isinstance(ex, vol.Invalid):
message = format_schema_error(hass, ex, domain, component_config)
else:
message = format_homeassistant_error(hass, ex, domain, component_config)
if domain in frontend_dependencies:
result.add_error(message, domain, config_to_attach)
else:
result.add_warning(message, domain, config_to_attach)
async def _get_integration(
hass: HomeAssistant, domain: str
) -> loader.Integration | None:
"""Get an integration."""
integration: loader.Integration | None = None
try:
integration = await async_get_integration_with_requirements(hass, domain)
except loader.IntegrationNotFound as ex:
# We get this error if an integration is not found. In recovery mode and
# safe mode, this currently happens for all custom integrations. Don't
# show errors for a missing integration in recovery mode or safe mode to
# not confuse the user.
if not hass.config.recovery_mode and not hass.config.safe_mode:
result.add_warning(f"Integration error: {domain} - {ex}")
except RequirementsNotFound as ex:
result.add_warning(f"Integration error: {domain} - {ex}")
return integration
# Load configuration.yaml
config_path = hass.config.path(YAML_CONFIG_FILE)
try:
if not await hass.async_add_executor_job(os.path.isfile, config_path):
return result.add_error("File configuration.yaml not found.")
config = await hass.async_add_executor_job(
load_yaml_config_file,
config_path,
yaml_loader.Secrets(Path(hass.config.config_dir)),
)
except FileNotFoundError:
return result.add_error(f"File not found: {config_path}")
except HomeAssistantError as err:
return result.add_error(f"Error loading {config_path}: {err}")
# Extract and validate core [homeassistant] config
try:
core_config = config.pop(CONF_CORE, {})
core_config = CORE_CONFIG_SCHEMA(core_config)
result[CONF_CORE] = core_config
except vol.Invalid as err:
result.add_error(
format_schema_error(hass, err, CONF_CORE, core_config),
CONF_CORE,
core_config,
)
core_config = {}
# Merge packages
await merge_packages_config(
hass, config, core_config.get(CONF_PACKAGES, {}), _pack_error
)
core_config.pop(CONF_PACKAGES, None)
# Filter out repeating config sections
components = {key.partition(" ")[0] for key in config}
frontend_dependencies: set[str] = set()
if "frontend" in components or "default_config" in components:
frontend = await _get_integration(hass, "frontend")
if frontend:
await frontend.resolve_dependencies()
frontend_dependencies = frontend.all_dependencies | {"frontend"}
# Process and validate config
for domain in components:
if not (integration := await _get_integration(hass, domain)):
continue
try:
component = integration.get_component()
except ImportError as ex:
result.add_warning(f"Component error: {domain} - {ex}")
continue
# Check if the integration has a custom config validator
config_validator = None
try:
config_validator = integration.get_platform("config")
except ImportError as err:
# Filter out import error of the config platform.
# If the config platform contains bad imports, make sure
# that still fails.
if err.name != f"{integration.pkg_path}.config":
result.add_error(f"Error importing config platform {domain}: {err}")
continue
if config_validator is not None and hasattr(
config_validator, "async_validate_config"
):
try:
result[domain] = (
await config_validator.async_validate_config(hass, config)
)[domain]
continue
except (vol.Invalid, HomeAssistantError) as ex:
_comp_error(ex, domain, config, config[domain])
continue
except Exception as err: # pylint: disable=broad-except
logging.getLogger(__name__).exception(
"Unexpected error validating config"
)
result.add_error(
f"Unexpected error calling config validator: {err}",
domain,
config.get(domain),
)
continue
config_schema = getattr(component, "CONFIG_SCHEMA", None)
if config_schema is not None:
try:
validated_config = config_schema(config)
# Don't fail if the validator removed the domain from the config
if domain in validated_config:
result[domain] = validated_config[domain]
except vol.Invalid as ex:
_comp_error(ex, domain, config, config[domain])
continue
component_platform_schema = getattr(
component,
"PLATFORM_SCHEMA_BASE",
getattr(component, "PLATFORM_SCHEMA", None),
)
if component_platform_schema is None:
continue
platforms = []
for p_name, p_config in config_per_platform(config, domain):
# Validate component specific platform schema
try:
p_validated = component_platform_schema(p_config)
except vol.Invalid as ex:
_comp_error(ex, domain, p_config, p_config)
continue
# Not all platform components follow same pattern for platforms
# So if p_name is None we are not going to validate platform
# (the automation component is one of them)
if p_name is None:
platforms.append(p_validated)
continue
try:
p_integration = await async_get_integration_with_requirements(
hass, p_name
)
platform = p_integration.get_platform(domain)
except loader.IntegrationNotFound as ex:
# We get this error if an integration is not found. In recovery mode and
# safe mode, this currently happens for all custom integrations. Don't
# show errors for a missing integration in recovery mode or safe mode to
# not confuse the user.
if not hass.config.recovery_mode and not hass.config.safe_mode:
result.add_warning(
f"Platform error '{domain}' from integration '{p_name}' - {ex}"
)
continue
except (
RequirementsNotFound,
ImportError,
) as ex:
result.add_warning(
f"Platform error '{domain}' from integration '{p_name}' - {ex}"
)
continue
# Validate platform specific schema
platform_schema = getattr(platform, "PLATFORM_SCHEMA", None)
if platform_schema is not None:
try:
p_validated = platform_schema(p_validated)
except vol.Invalid as ex:
_comp_error(ex, f"{domain}.{p_name}", p_config, p_config)
continue
platforms.append(p_validated)
# Remove config for current component and add validated config back in.
for filter_comp in extract_domain_configs(config, domain):
del config[filter_comp]
result[domain] = platforms
return result