69307374f4
* Signficantly reduce executor contention during bootstrap At startup we have a thundering herd wanting to use the executor to load manifiest.json. Since we know which integrations we are about to load in each resolver step, group the manifest loads into single executor jobs by calling async_get_integrations on the deps of the integrations after they are resolved. In practice this reduced the number of executor jobs by 80% during bootstrap * merge * naming * tweak * tweak * not enough contention to be worth it there * refactor to avoid waiting * refactor to avoid waiting * tweaks * tweaks * tweak * background is fine * comment
726 lines
24 KiB
Python
726 lines
24 KiB
Python
"""Provide methods to bootstrap a Home Assistant instance."""
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from __future__ import annotations
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import asyncio
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import contextlib
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from datetime import datetime, timedelta
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import logging
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import logging.handlers
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import os
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import platform
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import sys
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import threading
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from time import monotonic
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from typing import TYPE_CHECKING, Any
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import voluptuous as vol
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import yarl
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from . import config as conf_util, config_entries, core, loader, requirements
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from .components import http
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from .const import (
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FORMAT_DATETIME,
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REQUIRED_NEXT_PYTHON_HA_RELEASE,
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REQUIRED_NEXT_PYTHON_VER,
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SIGNAL_BOOTSTRAP_INTEGRATIONS,
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)
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from .exceptions import HomeAssistantError
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from .helpers import (
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area_registry,
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config_validation as cv,
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device_registry,
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entity,
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entity_registry,
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issue_registry,
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recorder,
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restore_state,
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template,
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)
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from .helpers.dispatcher import async_dispatcher_send
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from .helpers.typing import ConfigType
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from .setup import (
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DATA_SETUP,
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DATA_SETUP_STARTED,
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DATA_SETUP_TIME,
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async_notify_setup_error,
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async_set_domains_to_be_loaded,
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async_setup_component,
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)
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from .util import dt as dt_util
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from .util.logging import async_activate_log_queue_handler
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from .util.package import async_get_user_site, is_virtual_env
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if TYPE_CHECKING:
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from .runner import RuntimeConfig
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_LOGGER = logging.getLogger(__name__)
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ERROR_LOG_FILENAME = "home-assistant.log"
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# hass.data key for logging information.
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DATA_LOGGING = "logging"
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DATA_REGISTRIES_LOADED = "bootstrap_registries_loaded"
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LOG_SLOW_STARTUP_INTERVAL = 60
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SLOW_STARTUP_CHECK_INTERVAL = 1
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STAGE_1_TIMEOUT = 120
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STAGE_2_TIMEOUT = 300
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WRAP_UP_TIMEOUT = 300
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COOLDOWN_TIME = 60
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MAX_LOAD_CONCURRENTLY = 6
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DEBUGGER_INTEGRATIONS = {"debugpy"}
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CORE_INTEGRATIONS = {"homeassistant", "persistent_notification"}
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LOGGING_INTEGRATIONS = {
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# Set log levels
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"logger",
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# Error logging
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"system_log",
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"sentry",
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}
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FRONTEND_INTEGRATIONS = {
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# Get the frontend up and running as soon as possible so problem
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# integrations can be removed and database migration status is
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# visible in frontend
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"frontend",
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}
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RECORDER_INTEGRATIONS = {
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# Setup after frontend
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# To record data
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"recorder",
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}
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DISCOVERY_INTEGRATIONS = ("bluetooth", "dhcp", "ssdp", "usb", "zeroconf")
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STAGE_1_INTEGRATIONS = {
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# We need to make sure discovery integrations
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# update their deps before stage 2 integrations
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# load them inadvertently before their deps have
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# been updated which leads to using an old version
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# of the dep, or worse (import errors).
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*DISCOVERY_INTEGRATIONS,
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# To make sure we forward data to other instances
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"mqtt_eventstream",
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# To provide account link implementations
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"cloud",
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# Ensure supervisor is available
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"hassio",
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}
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async def async_setup_hass(
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runtime_config: RuntimeConfig,
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) -> core.HomeAssistant | None:
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"""Set up Home Assistant."""
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hass = core.HomeAssistant(runtime_config.config_dir)
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async_enable_logging(
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hass,
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runtime_config.verbose,
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runtime_config.log_rotate_days,
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runtime_config.log_file,
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runtime_config.log_no_color,
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)
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hass.config.safe_mode = runtime_config.safe_mode
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hass.config.skip_pip = runtime_config.skip_pip
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hass.config.skip_pip_packages = runtime_config.skip_pip_packages
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if runtime_config.skip_pip or runtime_config.skip_pip_packages:
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_LOGGER.warning(
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"Skipping pip installation of required modules. This may cause issues"
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)
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if not await conf_util.async_ensure_config_exists(hass):
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_LOGGER.error("Error getting configuration path")
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return None
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_LOGGER.info("Config directory: %s", runtime_config.config_dir)
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loader.async_setup(hass)
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config_dict = None
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basic_setup_success = False
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if not (recovery_mode := runtime_config.recovery_mode):
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await hass.async_add_executor_job(conf_util.process_ha_config_upgrade, hass)
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try:
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config_dict = await conf_util.async_hass_config_yaml(hass)
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except HomeAssistantError as err:
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_LOGGER.error(
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"Failed to parse configuration.yaml: %s. Activating recovery mode",
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err,
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)
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else:
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if not is_virtual_env():
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await async_mount_local_lib_path(runtime_config.config_dir)
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basic_setup_success = (
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await async_from_config_dict(config_dict, hass) is not None
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)
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if config_dict is None:
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recovery_mode = True
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elif not basic_setup_success:
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_LOGGER.warning("Unable to set up core integrations. Activating recovery mode")
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recovery_mode = True
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elif (
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"frontend" in hass.data.get(DATA_SETUP, {})
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and "frontend" not in hass.config.components
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):
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_LOGGER.warning("Detected that frontend did not load. Activating recovery mode")
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# Ask integrations to shut down. It's messy but we can't
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# do a clean stop without knowing what is broken
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with contextlib.suppress(asyncio.TimeoutError):
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async with hass.timeout.async_timeout(10):
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await hass.async_stop()
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recovery_mode = True
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old_config = hass.config
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old_logging = hass.data.get(DATA_LOGGING)
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hass = core.HomeAssistant(old_config.config_dir)
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if old_logging:
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hass.data[DATA_LOGGING] = old_logging
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hass.config.skip_pip = old_config.skip_pip
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hass.config.skip_pip_packages = old_config.skip_pip_packages
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hass.config.internal_url = old_config.internal_url
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hass.config.external_url = old_config.external_url
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# Setup loader cache after the config dir has been set
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loader.async_setup(hass)
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if recovery_mode:
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_LOGGER.info("Starting in recovery mode")
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hass.config.recovery_mode = True
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http_conf = (await http.async_get_last_config(hass)) or {}
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await async_from_config_dict(
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{"recovery_mode": {}, "http": http_conf},
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hass,
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)
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elif hass.config.safe_mode:
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_LOGGER.info("Starting in safe mode")
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if runtime_config.open_ui:
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hass.add_job(open_hass_ui, hass)
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return hass
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def open_hass_ui(hass: core.HomeAssistant) -> None:
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"""Open the UI."""
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import webbrowser # pylint: disable=import-outside-toplevel
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if hass.config.api is None or "frontend" not in hass.config.components:
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_LOGGER.warning("Cannot launch the UI because frontend not loaded")
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return
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scheme = "https" if hass.config.api.use_ssl else "http"
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url = str(
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yarl.URL.build(scheme=scheme, host="127.0.0.1", port=hass.config.api.port)
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)
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if not webbrowser.open(url):
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_LOGGER.warning(
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"Unable to open the Home Assistant UI in a browser. Open it yourself at %s",
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url,
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)
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async def async_load_base_functionality(hass: core.HomeAssistant) -> None:
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"""Load the registries and cache the result of platform.uname().processor."""
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if DATA_REGISTRIES_LOADED in hass.data:
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return
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hass.data[DATA_REGISTRIES_LOADED] = None
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def _cache_uname_processor() -> None:
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"""Cache the result of platform.uname().processor in the executor.
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Multiple modules call this function at startup which
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executes a blocking subprocess call. This is a problem for the
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asyncio event loop. By primeing the cache of uname we can
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avoid the blocking call in the event loop.
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"""
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platform.uname().processor # pylint: disable=expression-not-assigned
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# Load the registries and cache the result of platform.uname().processor
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entity.async_setup(hass)
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template.async_setup(hass)
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await asyncio.gather(
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area_registry.async_load(hass),
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device_registry.async_load(hass),
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entity_registry.async_load(hass),
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issue_registry.async_load(hass),
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hass.async_add_executor_job(_cache_uname_processor),
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template.async_load_custom_templates(hass),
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restore_state.async_load(hass),
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hass.config_entries.async_initialize(),
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)
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async def async_from_config_dict(
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config: ConfigType, hass: core.HomeAssistant
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) -> core.HomeAssistant | None:
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"""Try to configure Home Assistant from a configuration dictionary.
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Dynamically loads required components and its dependencies.
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This method is a coroutine.
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"""
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start = monotonic()
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hass.config_entries = config_entries.ConfigEntries(hass, config)
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await async_load_base_functionality(hass)
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# Set up core.
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_LOGGER.debug("Setting up %s", CORE_INTEGRATIONS)
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if not all(
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await asyncio.gather(
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*(
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async_setup_component(hass, domain, config)
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for domain in CORE_INTEGRATIONS
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)
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)
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):
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_LOGGER.error("Home Assistant core failed to initialize. ")
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return None
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_LOGGER.debug("Home Assistant core initialized")
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core_config = config.get(core.DOMAIN, {})
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try:
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await conf_util.async_process_ha_core_config(hass, core_config)
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except vol.Invalid as config_err:
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conf_util.async_log_schema_error(config_err, core.DOMAIN, core_config, hass)
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async_notify_setup_error(hass, core.DOMAIN)
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return None
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except HomeAssistantError:
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_LOGGER.error(
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"Home Assistant core failed to initialize. Further initialization aborted"
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)
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return None
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await _async_set_up_integrations(hass, config)
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stop = monotonic()
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_LOGGER.info("Home Assistant initialized in %.2fs", stop - start)
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if (
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REQUIRED_NEXT_PYTHON_HA_RELEASE
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and sys.version_info[:3] < REQUIRED_NEXT_PYTHON_VER
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):
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current_python_version = ".".join(str(x) for x in sys.version_info[:3])
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required_python_version = ".".join(str(x) for x in REQUIRED_NEXT_PYTHON_VER[:2])
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_LOGGER.warning(
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(
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"Support for the running Python version %s is deprecated and "
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"will be removed in Home Assistant %s; "
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"Please upgrade Python to %s"
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),
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current_python_version,
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REQUIRED_NEXT_PYTHON_HA_RELEASE,
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required_python_version,
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)
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issue_registry.async_create_issue(
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hass,
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core.DOMAIN,
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"python_version",
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is_fixable=False,
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severity=issue_registry.IssueSeverity.WARNING,
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breaks_in_ha_version=REQUIRED_NEXT_PYTHON_HA_RELEASE,
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translation_key="python_version",
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translation_placeholders={
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"current_python_version": current_python_version,
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"required_python_version": required_python_version,
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"breaks_in_ha_version": REQUIRED_NEXT_PYTHON_HA_RELEASE,
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},
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)
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return hass
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@core.callback
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def async_enable_logging(
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hass: core.HomeAssistant,
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verbose: bool = False,
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log_rotate_days: int | None = None,
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log_file: str | None = None,
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log_no_color: bool = False,
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) -> None:
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"""Set up the logging.
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This method must be run in the event loop.
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"""
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fmt = (
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"%(asctime)s.%(msecs)03d %(levelname)s (%(threadName)s) [%(name)s] %(message)s"
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)
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if not log_no_color:
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try:
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# pylint: disable-next=import-outside-toplevel
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from colorlog import ColoredFormatter
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# basicConfig must be called after importing colorlog in order to
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# ensure that the handlers it sets up wraps the correct streams.
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logging.basicConfig(level=logging.INFO)
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colorfmt = f"%(log_color)s{fmt}%(reset)s"
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logging.getLogger().handlers[0].setFormatter(
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ColoredFormatter(
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colorfmt,
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datefmt=FORMAT_DATETIME,
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reset=True,
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log_colors={
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"DEBUG": "cyan",
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"INFO": "green",
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"WARNING": "yellow",
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"ERROR": "red",
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"CRITICAL": "red",
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},
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)
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)
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except ImportError:
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pass
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# If the above initialization failed for any reason, setup the default
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# formatting. If the above succeeds, this will result in a no-op.
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logging.basicConfig(format=fmt, datefmt=FORMAT_DATETIME, level=logging.INFO)
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# Capture warnings.warn(...) and friends messages in logs.
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# The standard destination for them is stderr, which may end up unnoticed.
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# This way they're where other messages are, and can be filtered as usual.
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logging.captureWarnings(True)
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# Suppress overly verbose logs from libraries that aren't helpful
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logging.getLogger("requests").setLevel(logging.WARNING)
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logging.getLogger("urllib3").setLevel(logging.WARNING)
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logging.getLogger("aiohttp.access").setLevel(logging.WARNING)
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logging.getLogger("httpx").setLevel(logging.WARNING)
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sys.excepthook = lambda *args: logging.getLogger(None).exception(
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"Uncaught exception", exc_info=args
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)
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threading.excepthook = lambda args: logging.getLogger(None).exception(
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"Uncaught thread exception",
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exc_info=( # type: ignore[arg-type]
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args.exc_type,
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args.exc_value,
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args.exc_traceback,
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),
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)
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# Log errors to a file if we have write access to file or config dir
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if log_file is None:
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err_log_path = hass.config.path(ERROR_LOG_FILENAME)
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else:
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err_log_path = os.path.abspath(log_file)
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err_path_exists = os.path.isfile(err_log_path)
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err_dir = os.path.dirname(err_log_path)
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# Check if we can write to the error log if it exists or that
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# we can create files in the containing directory if not.
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if (err_path_exists and os.access(err_log_path, os.W_OK)) or (
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not err_path_exists and os.access(err_dir, os.W_OK)
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):
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err_handler: (
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logging.handlers.RotatingFileHandler
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| logging.handlers.TimedRotatingFileHandler
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)
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if log_rotate_days:
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err_handler = logging.handlers.TimedRotatingFileHandler(
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err_log_path, when="midnight", backupCount=log_rotate_days
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)
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else:
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err_handler = logging.handlers.RotatingFileHandler(
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err_log_path, backupCount=1
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)
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try:
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err_handler.doRollover()
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except OSError as err:
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_LOGGER.error("Error rolling over log file: %s", err)
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err_handler.setLevel(logging.INFO if verbose else logging.WARNING)
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err_handler.setFormatter(logging.Formatter(fmt, datefmt=FORMAT_DATETIME))
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logger = logging.getLogger("")
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logger.addHandler(err_handler)
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logger.setLevel(logging.INFO if verbose else logging.WARNING)
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# Save the log file location for access by other components.
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hass.data[DATA_LOGGING] = err_log_path
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else:
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_LOGGER.error("Unable to set up error log %s (access denied)", err_log_path)
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async_activate_log_queue_handler(hass)
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async def async_mount_local_lib_path(config_dir: str) -> str:
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"""Add local library to Python Path.
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This function is a coroutine.
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"""
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deps_dir = os.path.join(config_dir, "deps")
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if (lib_dir := await async_get_user_site(deps_dir)) not in sys.path:
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sys.path.insert(0, lib_dir)
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return deps_dir
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@core.callback
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def _get_domains(hass: core.HomeAssistant, config: dict[str, Any]) -> set[str]:
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"""Get domains of components to set up."""
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# Filter out the repeating and common config section [homeassistant]
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domains = {
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domain for key in config if (domain := cv.domain_key(key)) != core.DOMAIN
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}
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# Add config entry domains
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if not hass.config.recovery_mode:
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domains.update(hass.config_entries.async_domains())
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# Make sure the Hass.io component is loaded
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if "SUPERVISOR" in os.environ:
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domains.add("hassio")
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return domains
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async def _async_watch_pending_setups(hass: core.HomeAssistant) -> None:
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"""Periodic log of setups that are pending.
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Pending for longer than LOG_SLOW_STARTUP_INTERVAL.
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"""
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loop_count = 0
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setup_started: dict[str, datetime] = hass.data[DATA_SETUP_STARTED]
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previous_was_empty = True
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while True:
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now = dt_util.utcnow()
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remaining_with_setup_started = {
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domain: (now - setup_started[domain]).total_seconds()
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for domain in setup_started
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}
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_LOGGER.debug("Integration remaining: %s", remaining_with_setup_started)
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|
if remaining_with_setup_started or not previous_was_empty:
|
|
async_dispatcher_send(
|
|
hass, SIGNAL_BOOTSTRAP_INTEGRATIONS, remaining_with_setup_started
|
|
)
|
|
previous_was_empty = not remaining_with_setup_started
|
|
await asyncio.sleep(SLOW_STARTUP_CHECK_INTERVAL)
|
|
loop_count += SLOW_STARTUP_CHECK_INTERVAL
|
|
|
|
if loop_count >= LOG_SLOW_STARTUP_INTERVAL and setup_started:
|
|
_LOGGER.warning(
|
|
"Waiting on integrations to complete setup: %s",
|
|
", ".join(setup_started),
|
|
)
|
|
loop_count = 0
|
|
_LOGGER.debug("Running timeout Zones: %s", hass.timeout.zones)
|
|
|
|
|
|
async def async_setup_multi_components(
|
|
hass: core.HomeAssistant,
|
|
domains: set[str],
|
|
config: dict[str, Any],
|
|
) -> None:
|
|
"""Set up multiple domains. Log on failure."""
|
|
# Avoid creating tasks for domains that were setup in a previous stage
|
|
domains_not_yet_setup = domains - hass.config.components
|
|
futures = {
|
|
domain: hass.async_create_task(
|
|
async_setup_component(hass, domain, config), f"setup component {domain}"
|
|
)
|
|
for domain in domains_not_yet_setup
|
|
}
|
|
results = await asyncio.gather(*futures.values(), return_exceptions=True)
|
|
for idx, domain in enumerate(futures):
|
|
result = results[idx]
|
|
if isinstance(result, BaseException):
|
|
_LOGGER.error(
|
|
"Error setting up integration %s - received exception",
|
|
domain,
|
|
exc_info=(type(result), result, result.__traceback__),
|
|
)
|
|
|
|
|
|
async def _async_set_up_integrations(
|
|
hass: core.HomeAssistant, config: dict[str, Any]
|
|
) -> None:
|
|
"""Set up all the integrations."""
|
|
hass.data[DATA_SETUP_STARTED] = {}
|
|
setup_time: dict[str, timedelta] = hass.data.setdefault(DATA_SETUP_TIME, {})
|
|
|
|
watch_task = asyncio.create_task(_async_watch_pending_setups(hass))
|
|
|
|
domains_to_setup = _get_domains(hass, config)
|
|
|
|
needed_requirements: set[str] = set()
|
|
|
|
# Resolve all dependencies so we know all integrations
|
|
# that will have to be loaded and start rightaway
|
|
integration_cache: dict[str, loader.Integration] = {}
|
|
to_resolve: set[str] = domains_to_setup
|
|
while to_resolve:
|
|
old_to_resolve: set[str] = to_resolve
|
|
to_resolve = set()
|
|
|
|
integrations_to_process = [
|
|
int_or_exc
|
|
for int_or_exc in (
|
|
await loader.async_get_integrations(hass, old_to_resolve)
|
|
).values()
|
|
if isinstance(int_or_exc, loader.Integration)
|
|
]
|
|
|
|
manifest_deps: set[str] = set()
|
|
for itg in integrations_to_process:
|
|
manifest_deps.update(itg.dependencies)
|
|
manifest_deps.update(itg.after_dependencies)
|
|
needed_requirements.update(itg.requirements)
|
|
|
|
if manifest_deps:
|
|
# If there are dependencies, try to preload all
|
|
# the integrations manifest at once and add them
|
|
# to the list of requirements we need to install
|
|
# so we can try to check if they are already installed
|
|
# in a single call below which avoids each integration
|
|
# having to wait for the lock to do it individually
|
|
deps = await loader.async_get_integrations(hass, manifest_deps)
|
|
for dependant_itg in deps.values():
|
|
if isinstance(dependant_itg, loader.Integration):
|
|
needed_requirements.update(dependant_itg.requirements)
|
|
|
|
resolve_dependencies_tasks = [
|
|
itg.resolve_dependencies()
|
|
for itg in integrations_to_process
|
|
if not itg.all_dependencies_resolved
|
|
]
|
|
|
|
if resolve_dependencies_tasks:
|
|
await asyncio.gather(*resolve_dependencies_tasks)
|
|
|
|
for itg in integrations_to_process:
|
|
integration_cache[itg.domain] = itg
|
|
|
|
for dep in itg.all_dependencies:
|
|
if dep in domains_to_setup:
|
|
continue
|
|
|
|
domains_to_setup.add(dep)
|
|
to_resolve.add(dep)
|
|
|
|
_LOGGER.info("Domains to be set up: %s", domains_to_setup)
|
|
|
|
# Optimistically check if requirements are already installed
|
|
# ahead of setting up the integrations so we can prime the cache
|
|
# We do not wait for this since its an optimization only
|
|
hass.async_create_background_task(
|
|
requirements.async_load_installed_versions(hass, needed_requirements),
|
|
"check installed requirements",
|
|
)
|
|
|
|
# Initialize recorder
|
|
if "recorder" in domains_to_setup:
|
|
recorder.async_initialize_recorder(hass)
|
|
|
|
# Load logging as soon as possible
|
|
if logging_domains := domains_to_setup & LOGGING_INTEGRATIONS:
|
|
_LOGGER.info("Setting up logging: %s", logging_domains)
|
|
await async_setup_multi_components(hass, logging_domains, config)
|
|
|
|
# Setup frontend
|
|
if frontend_domains := domains_to_setup & FRONTEND_INTEGRATIONS:
|
|
_LOGGER.info("Setting up frontend: %s", frontend_domains)
|
|
await async_setup_multi_components(hass, frontend_domains, config)
|
|
|
|
# Setup recorder
|
|
if recorder_domains := domains_to_setup & RECORDER_INTEGRATIONS:
|
|
_LOGGER.info("Setting up recorder: %s", recorder_domains)
|
|
await async_setup_multi_components(hass, recorder_domains, config)
|
|
|
|
# Start up debuggers. Start these first in case they want to wait.
|
|
if debuggers := domains_to_setup & DEBUGGER_INTEGRATIONS:
|
|
_LOGGER.debug("Setting up debuggers: %s", debuggers)
|
|
await async_setup_multi_components(hass, debuggers, config)
|
|
|
|
# calculate what components to setup in what stage
|
|
stage_1_domains: set[str] = set()
|
|
|
|
# Find all dependencies of any dependency of any stage 1 integration that
|
|
# we plan on loading and promote them to stage 1. This is done only to not
|
|
# get misleading log messages
|
|
deps_promotion: set[str] = STAGE_1_INTEGRATIONS
|
|
while deps_promotion:
|
|
old_deps_promotion = deps_promotion
|
|
deps_promotion = set()
|
|
|
|
for domain in old_deps_promotion:
|
|
if domain not in domains_to_setup or domain in stage_1_domains:
|
|
continue
|
|
|
|
stage_1_domains.add(domain)
|
|
|
|
if (dep_itg := integration_cache.get(domain)) is None:
|
|
continue
|
|
|
|
deps_promotion.update(dep_itg.all_dependencies)
|
|
|
|
stage_2_domains = (
|
|
domains_to_setup
|
|
- logging_domains
|
|
- frontend_domains
|
|
- recorder_domains
|
|
- debuggers
|
|
- stage_1_domains
|
|
)
|
|
|
|
# Enables after dependencies when setting up stage 1 domains
|
|
async_set_domains_to_be_loaded(hass, stage_1_domains)
|
|
|
|
# Start setup
|
|
if stage_1_domains:
|
|
_LOGGER.info("Setting up stage 1: %s", stage_1_domains)
|
|
try:
|
|
async with hass.timeout.async_timeout(
|
|
STAGE_1_TIMEOUT, cool_down=COOLDOWN_TIME
|
|
):
|
|
await async_setup_multi_components(hass, stage_1_domains, config)
|
|
except asyncio.TimeoutError:
|
|
_LOGGER.warning("Setup timed out for stage 1 - moving forward")
|
|
|
|
# Add after dependencies when setting up stage 2 domains
|
|
async_set_domains_to_be_loaded(hass, stage_2_domains)
|
|
|
|
if stage_2_domains:
|
|
_LOGGER.info("Setting up stage 2: %s", stage_2_domains)
|
|
try:
|
|
async with hass.timeout.async_timeout(
|
|
STAGE_2_TIMEOUT, cool_down=COOLDOWN_TIME
|
|
):
|
|
await async_setup_multi_components(hass, stage_2_domains, config)
|
|
except asyncio.TimeoutError:
|
|
_LOGGER.warning("Setup timed out for stage 2 - moving forward")
|
|
|
|
# Wrap up startup
|
|
_LOGGER.debug("Waiting for startup to wrap up")
|
|
try:
|
|
async with hass.timeout.async_timeout(WRAP_UP_TIMEOUT, cool_down=COOLDOWN_TIME):
|
|
await hass.async_block_till_done()
|
|
except asyncio.TimeoutError:
|
|
_LOGGER.warning("Setup timed out for bootstrap - moving forward")
|
|
|
|
watch_task.cancel()
|
|
async_dispatcher_send(hass, SIGNAL_BOOTSTRAP_INTEGRATIONS, {})
|
|
|
|
_LOGGER.debug(
|
|
"Integration setup times: %s",
|
|
{
|
|
integration: timedelta.total_seconds()
|
|
for integration, timedelta in sorted(
|
|
setup_time.items(), key=lambda item: item[1].total_seconds()
|
|
)
|
|
},
|
|
)
|