How to debug local running app (not tests)? #3522
Description
How do you use ipdb to debug a local running application? The only reference in the docs are focused on tests, which are less than helpful in my case.
class AggregateView(BaseView): # BaseView inherits from `aiohttp.web.View`
async def post(self):
import ipdb
ipdb.set_trace()
requests = await self.request.json()
logger.debug(f'Making [{len(requests)}] service calls at [{datetime.now()}]')
queries = []
async with ClientSession(cookie_jar=CookieJar(unsafe=True)) as session:
for req in requests:
queries.append(self._retrieve(req, session))
logger.debug(f'Async calls created [{datetime.now()}]')
results = await asyncio.gather(*queries)
logger.debug(f'Async calls completed and aggregated [{datetime.now()}]')
return web.json_response(
status=207,
data=results
)
Running with command line docker-compose run --rm --service-ports aiohttp results in this output:
89 import ipdb; ipdb.set_trace()
---> 90 ipdb.set_trace()
91 requests = await self.request.json().
Error handling request
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/application/application.py", line 652, in _run_async2
result = yield f
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/eventloop/coroutine.py", line 86, in step_next
new_f = coroutine.send(None)
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/application/application.py", line 591, in _run_async
with self.input.raw_mode():
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/input/vt100.py", line 231, in __enter__
os.write(self.fileno, b'\x1b[?1l')
OSError: [Errno 9] Bad file descriptor
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/aiohttp/web_protocol.py", line 390, in start
resp = await self._request_handler(request)
File "/usr/local/lib/python3.6/site-packages/aiohttp/web_app.py", line 366, in _handle
resp = await handler(request)
File "/usr/local/lib/python3.6/site-packages/aiohttp/web_urldispatcher.py", line 740, in _iter
resp = await method()
File "/orm/service/api/views.py", line 90, in post
ipdb.set_trace()
File "/orm/service/api/views.py", line 90, in post
ipdb.set_trace()
File "/usr/local/lib/python3.6/bdb.py", line 51, in trace_dispatch
return self.dispatch_line(frame)
File "/usr/local/lib/python3.6/bdb.py", line 69, in dispatch_line
self.user_line(frame)
File "/usr/local/lib/python3.6/pdb.py", line 261, in user_line
self.interaction(frame, None)
File "/usr/local/lib/python3.6/site-packages/IPython/core/debugger.py", line 297, in interaction
OldPdb.interaction(self, frame, traceback)
File "/usr/local/lib/python3.6/pdb.py", line 352, in interaction
self._cmdloop()
File "/usr/local/lib/python3.6/pdb.py", line 321, in _cmdloop
self.cmdloop()
File "/usr/local/lib/python3.6/site-packages/IPython/terminal/debugger.py", line 88, in cmdloop
line = self.pt_app.prompt() # reset_current_buffer=True)
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/shortcuts/prompt.py", line 733, in prompt
return run_sync()
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/shortcuts/prompt.py", line 722, in run_sync
return self.app.run(inputhook=self.inputhook, pre_run=pre_run2)
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/application/application.py", line 699, in run
return run()
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/application/application.py", line 673, in run
return f.result()
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/eventloop/future.py", line 149, in result
raise self._exception
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/eventloop/coroutine.py", line 90, in step_next
new_f = coroutine.throw(exc)
File "/usr/local/lib/python3.6/site-packages/prompt_toolkit/application/application.py", line 654, in _run_async2
assert not self._is_running
AssertionError
[14:38:31]● POST /aggregate 500 3.5KB 623ms
my web application is started with:
from dashboard_service import aiohttp_settings as settings
from api.routes import setup_routes
async def create_app():
app = web.Application()
app['config'] = settings
setup_routes(app)
return app
def main():
logging.basicConfig(level=logging.DEBUG)
app = create_app()
web.run_app(app, host=settings.HOST, port=settings.PORT)
Other things I've tried are from https://docs.python.org/3.6/library/asyncio-dev.html, including
echo $PYTHONASYNCIODEBUG
1
With this kind of project, how do we get ipdb breakpoints to work with no exception stack traces?