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Reduce ssdp context switches into the executor (#42045)

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* Reduce ssdp context switches into the executor

* no self use
This commit is contained in:
J. Nick Koston 2020-10-18 13:44:01 -05:00 committed by GitHub
parent c4821bfa74
commit 6c1078d1ca
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1 changed files with 10 additions and 5 deletions
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15
homeassistant/components/ssdp/__init__.py
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@ -1,6 +1,7 @@
"""The SSDP integration.""" """The SSDP integration."""
import asyncio import asyncio
from datetime import timedelta from datetime import timedelta
import itertools
import logging import logging
import aiohttp import aiohttp
@ -50,6 +51,12 @@ async def async_setup(hass, config):
return True return True
def _run_ssdp_scans():
_LOGGER.debug("Scanning")
# Run 3 times as packets can get lost
return itertools.chain.from_iterable([ssdp.scan() for _ in range(3)])
class Scanner: class Scanner:
"""Class to manage SSDP scanning.""" """Class to manage SSDP scanning."""
@ -62,11 +69,9 @@ class Scanner:
async def async_scan(self, _): async def async_scan(self, _):
"""Scan for new entries.""" """Scan for new entries."""
_LOGGER.debug("Scanning") entries = await self.hass.async_add_executor_job(_run_ssdp_scans)
# Run 3 times as packets can get lost
for _ in range(3): await self._process_entries(entries)
entries = await self.hass.async_add_executor_job(ssdp.scan)
await self._process_entries(entries)
# We clear the cache after each run. We track discovered entries # We clear the cache after each run. We track discovered entries
# so will never need a description twice. # so will never need a description twice.