Detected blocking call

[Teemops2806]

Today I got the following warning:

2024-07-15 08:06:25.171 WARNING (MainThread) [homeassistant.util.loop] Detected blocking call to scandir with args (b'/config/pyscript',) inside the event loop by custom integration 'pyscript' at custom_components/pyscript/init.py, line 335: observer.start() (offender: , line 366: ?), please create a bug report at https://github.com/custom-components/pyscript/issues
For developers, please see https://developers.home-assistant.io/docs/asyncio_blocking_operations/#scandir
Traceback (most recent call last):
File "", line 198, in _run_module_as_main
File "", line 88, in _run_code
File "/usr/src/homeassistant/homeassistant/main.py", line 223, in
sys.exit(main())
File "/usr/src/homeassistant/homeassistant/main.py", line 209, in main
exit_code = runner.run(runtime_conf)
File "/usr/src/homeassistant/homeassistant/runner.py", line 190, in run
return loop.run_until_complete(setup_and_run_hass(runtime_config))
File "/usr/local/lib/python3.12/asyncio/base_events.py", line 674, in run_until_complete
self.run_forever()
File "/usr/local/lib/python3.12/asyncio/base_events.py", line 641, in run_forever
self._run_once()
File "/usr/local/lib/python3.12/asyncio/base_events.py", line 1990, in _run_once
handle._run()
File "/usr/local/lib/python3.12/asyncio/events.py", line 88, in _run
self._context.run(self._callback, *self._args)
File "/config/custom_components/pyscript/init.py", line 335, in hass_started
observer.start()

[Just-Zuul]

Bug Report: Blocking Call Detected in Pyscript Integration

Description:
A blocking call to os.walk() and os.scandir() has been detected inside the event loop by the custom integration pyscript. This issue can affect the performance and responsiveness of Home Assistant.

Logger:
homeassistant.util.loop

Source:
util/loop.py:136

First Occurrence:
17:57:42

Last Occurrence:
17:57:42

Details:
Detected blocking call to walk with args (b'/config/pyscript',) inside the event loop by custom integration 'pyscript' at custom_components/pyscript/__init__.py, line 335: observer.start() (offender: /usr/local/lib/python3.12/site-packages/watchdog/observers/inotify_c.py, line 394: for root, dirnames, _ in os.walk(path):), please create a bug report at https://github.com/custom-components/pyscript/issues For developers, please see https://developers.home-assistant.io/docs/asyncio_blocking_operations/#walk Traceback (most recent call last): File "<frozen runpy>", line 198, in _run_module_as_main File "<frozen runpy>", line 88, in _run_code File "/usr/src/homeassistant/homeassistant/__main__.py", line 223, in <module> sys.exit(main()) File "/usr/src/homeassistant/homeassistant/__main__.py", line 209, in main exit_code = runner.run(runtime_conf) File "/usr/src/homeassistant/homeassistant/runner.py", line 190, in run return loop.run_until_complete(setup_and_run_hass(runtime_config)) File "/usr/local/lib/python3.12/asyncio/base_events.py", line 674, in run_until_complete self.run_forever() File "/usr/local/lib/python3.12/asyncio/base_events.py", line 641, in run_forever self._run_once() File "/usr/local/lib/python3.12/asyncio/base_events.py", line 1990, in _run_once handle._run() File "/usr/local/lib/python3.12/asyncio/events.py", line 88, in _run self._context.run(self._callback, *self._args) File "/usr/src/homeassistant/homeassistant/runner.py", line 166, in setup_and_run_hass return await hass.async_run() File "/usr/src/homeassistant/homeassistant/core.py", line 523, in async_run await self.async_start() File "/usr/src/homeassistant/homeassistant/core.py", line 576, in async_start self.bus.async_fire_internal(EVENT_HOMEASSISTANT_STARTED) File "/usr/src/homeassistant/homeassistant/core.py", line 1559, in async_fire_internal self._hass.async_run_hass_job(job, event) File "/usr/src/homeassistant/homeassistant/core.py", line 941, in async_run_hass_job return self._async_add_hass_job(hassjob, *args, background=background) File "/usr/src/homeassistant/homeassistant/core.py", line 756, in _async_add_hass_job task = create_eager_task( File "/usr/src/homeassistant/homeassistant/util/async_.py", line 37, in create_eager_task return Task(coro, loop=loop, name=name, eager_start=True) File "/config/custom_components/pyscript/__init__.py", line 335, in hass_started observer.start() Detected blocking call to scandir with args (b'/config/pyscript',) inside the event loop by custom integration 'pyscript' at custom_components/pyscript/__init__.py, line 335: observer.start() (offender: <frozen os>, line 366: ?), please create a bug report at https://github.com/custom-components/pyscript/issues For developers, please see https://developers.home-assistant.io/docs/asyncio_blocking_operations/#scandir Traceback (most recent call last): File "<frozen runpy>", line 198, in _run_module_as_main File "<frozen runpy>", line 88, in _run_code File "/usr/src/homeassistant/homeassistant/__main__.py", line 223, in <module> sys.exit(main()) File "/usr/src/homeassistant/homeassistant/__main__.py", line 209, in main exit_code = runner.run(runtime_conf) File "/usr/src/homeassistant/homeassistant/runner.py", line 190, in run return loop.run_until_complete(setup_and_run_hass(runtime_config)) File "/usr/local/lib/python3.12/asyncio/base_events.py", line 674, in run_until_complete self.run_forever() File "/usr/local/lib/python3.12/asyncio/base_events.py", line 641, in run_forever self._run_once() File "/usr/local/lib/python3.12/asyncio/base_events.py", line 1990, in _run_once handle._run() File "/usr/local/lib/python3.12/asyncio/events.py", line 88, in _run self._context.run(self._callback, *self._args) File "/usr/src/homeassistant/homeassistant/runner.py", line 166, in setup_and_run_hass return await hass.async_run() File "/usr/src/homeassistant/homeassistant/core.py", line 523, in async_run await self.async_start() File "/usr/src/homeassistant/homeassistant/core.py", line 576, in async_start self.bus.async_fire_internal(EVENT_HOMEASSISTANT_STARTED) File "/usr/src/homeassistant/homeassistant/core.py", line 1559, in async_fire_internal self._hass.async_run_hass_job(job, event) File "/usr/src/homeassistant/homeassistant/core.py", line 941, in async_run_hass_job return self._async_add_hass_job(hassjob, *args, background=background) File "/usr/src/homeassistant/homeassistant/core.py", line 756, in _async_add_hass_job task = create_eager_task( File "/usr/src/homeassistant/homeassistant/util/async_.py", line 37, in create_eager_task return Task(coro, loop=loop, name=name, eager_start=True) File "/config/custom_components/pyscript/__init__.py", line 335, in hass_started observer.start()
After Update 2024.6.x to 2024.7.3

[erkr]

I have the same issue. This is my code that causes that blocking call warning:

        for t in dir_types:
            if t in source:
                inc = source.split(t + ' ')
                path = '/config/' + inc[1].replace('./','')
                with os.scandir(path) as it:
                    for entry in it:
                        if not entry.name.startswith('.') and entry.is_file():
                            includes.append(path + '/' + entry.name)
                return            

[craigbarratt]

This is because you are making file system calls (eg, os.scandir), which can block. Pyscript runs in the main event loop so you cannot call functions that block. There are two solutions:

• use async versions of file system calls, eg, aiopath.
• use task.executor to run the blocking code outside the main event loop. See the documentation.

[Teemops2806]

Hi there,as I am not a dev, I don't understand a single word 😁I hope, some skilled dev reads this and can help/fix this.Using the onboard backup function should work, I guess.Thanks for checkimg this topic.Best regardsFreundliche Grüße, FrankAm 27.11.2024 um 19:55 schrieb Craig Barratt ***@***.***>: This is because you are making file system calls (eg, os.scandir), which can block. Pyscript runs in the main event loop so you cannot call functions that block. There are two solutions: use async versions of file system calls, eg, aiopath. use task.executor to run the blocking code outside the main event loop. See the documentation. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>

[erkr]

Thanks, I was under the impression that pyscripts were running asynchronous by design. Will look into your leads and learn ☺️