114 lines
3.7 KiB
Python
114 lines
3.7 KiB
Python
"""
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homeassistant.bootstrap
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~~~~~~~~~~~~~~~~~~~~~~~
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Provides methods to bootstrap a home assistant instance.
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Each method will return a tuple (bus, statemachine).
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After bootstrapping you can add your own components or
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start by calling homeassistant.start_home_assistant(bus)
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"""
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import os
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import configparser
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import logging
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from collections import defaultdict
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import homeassistant
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import homeassistant.loader as loader
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import homeassistant.components as core_components
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# pylint: disable=too-many-branches, too-many-statements
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def from_config_dict(config, hass=None):
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"""
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Tries to configure Home Assistant from a config dict.
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Dynamically loads required components and its dependencies.
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"""
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if hass is None:
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hass = homeassistant.HomeAssistant()
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logger = logging.getLogger(__name__)
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loader.prepare(hass)
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# Make a copy because we are mutating it.
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# Convert it to defaultdict so components can always have config dict
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config = defaultdict(dict, config)
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# Filter out the common config section [homeassistant]
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components = (key for key in config.keys() if key != homeassistant.DOMAIN)
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# Setup the components
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if core_components.setup(hass, config):
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logger.info("Home Assistant core initialized")
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for domain in loader.load_order_components(components):
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try:
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if loader.get_component(domain).setup(hass, config):
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logger.info("component %s initialized", domain)
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else:
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logger.error("component %s failed to initialize", domain)
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except Exception: # pylint: disable=broad-except
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logger.exception("Error during setup of component %s", domain)
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else:
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logger.error(("Home Assistant core failed to initialize. "
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"Further initialization aborted."))
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return hass
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def from_config_file(config_path, hass=None, enable_logging=True):
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"""
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Reads the configuration file and tries to start all the required
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functionality. Will add functionality to 'hass' parameter if given,
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instantiates a new Home Assistant object if 'hass' is not given.
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"""
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if hass is None:
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hass = homeassistant.HomeAssistant()
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# Set config dir to directory holding config file
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hass.config_dir = os.path.abspath(os.path.dirname(config_path))
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if enable_logging:
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# Setup the logging for home assistant.
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logging.basicConfig(level=logging.INFO)
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# Log errors to a file if we have write access to file or config dir
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err_log_path = hass.get_config_path("home-assistant.log")
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err_path_exists = os.path.isfile(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 containgin 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(hass.config_dir, os.W_OK)):
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err_handler = logging.FileHandler(
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err_log_path, mode='w', delay=True)
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err_handler.setLevel(logging.ERROR)
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err_handler.setFormatter(
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logging.Formatter('%(asctime)s %(name)s: %(message)s',
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datefmt='%H:%M %d-%m-%y'))
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logging.getLogger('').addHandler(err_handler)
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else:
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logging.getLogger(__name__).error(
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"Unable to setup error log %s (access denied)", err_log_path)
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# Read config
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config = configparser.ConfigParser()
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config.read(config_path)
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config_dict = {}
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for section in config.sections():
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config_dict[section] = {}
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for key, val in config.items(section):
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config_dict[section][key] = val
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return from_config_dict(config_dict, hass)
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