b4bac0f7a0
* Remove unnecessary exception re-wraps * Preserve exception chains on re-raise We slap "from cause" to almost all possible cases here. In some cases it could conceivably be better to do "from None" if we really want to hide the cause. However those should be in the minority, and "from cause" should be an improvement over the corresponding raise without a "from" in all cases anyway. The only case where we raise from None here is in plex, where the exception for an original invalid SSL cert is not the root cause for failure to validate a newly fetched one. Follow local convention on exception variable names if there is a consistent one, otherwise `err` to match with majority of codebase. * Fix mistaken re-wrap in homematicip_cloud/hap.py Missed the difference between HmipConnectionError and HmipcConnectionError. * Do not hide original error on plex new cert validation error Original is not the cause for the new one, but showing old in the traceback is useful nevertheless.
68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
"""Config flow for Nightscout integration."""
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from asyncio import TimeoutError as AsyncIOTimeoutError
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import logging
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from aiohttp import ClientError
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from py_nightscout import Api as NightscoutAPI
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import voluptuous as vol
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from homeassistant import config_entries, exceptions
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from homeassistant.const import CONF_URL
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from .const import DOMAIN # pylint:disable=unused-import
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from .utils import hash_from_url
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_LOGGER = logging.getLogger(__name__)
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DATA_SCHEMA = vol.Schema({vol.Required(CONF_URL): str})
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async def _validate_input(data):
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"""Validate the user input allows us to connect."""
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url = data[CONF_URL]
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try:
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api = NightscoutAPI(url)
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status = await api.get_server_status()
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except (ClientError, AsyncIOTimeoutError, OSError) as error:
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raise InputValidationError("cannot_connect") from error
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# Return info to be stored in the config entry.
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return {"title": status.name}
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class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
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"""Handle a config flow for Nightscout."""
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VERSION = 1
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CONNECTION_CLASS = config_entries.CONN_CLASS_CLOUD_POLL
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async def async_step_user(self, user_input=None):
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"""Handle the initial step."""
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errors = {}
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if user_input is not None:
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unique_id = hash_from_url(user_input[CONF_URL])
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await self.async_set_unique_id(unique_id)
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self._abort_if_unique_id_configured()
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try:
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info = await _validate_input(user_input)
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except InputValidationError as error:
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errors["base"] = error.base
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except Exception: # pylint: disable=broad-except
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_LOGGER.exception("Unexpected exception")
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errors["base"] = "unknown"
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else:
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return self.async_create_entry(title=info["title"], data=user_input)
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return self.async_show_form(
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step_id="user", data_schema=DATA_SCHEMA, errors=errors
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)
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class InputValidationError(exceptions.HomeAssistantError):
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"""Error to indicate we cannot proceed due to invalid input."""
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def __init__(self, base: str):
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"""Initialize with error base."""
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super().__init__()
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self.base = base
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