zulip/zilencer/management/commands/profile_request.py

59 lines
2.1 KiB
Python

import cProfile
import logging
import tempfile
from typing import Any
from django.contrib.sessions.backends.base import SessionBase
from django.core.management.base import CommandParser
from django.http import HttpRequest, HttpResponseBase
from zerver.lib.management import ZulipBaseCommand
from zerver.lib.request import RequestNotes
from zerver.lib.test_helpers import HostRequestMock
from zerver.middleware import LogRequests
from zerver.models import UserMessage
from zerver.views.message_fetch import get_messages_backend
class MockSession(SessionBase):
def __init__(self) -> None:
self.modified = False
def profile_request(request: HttpRequest) -> HttpResponseBase:
def get_response(request: HttpRequest) -> HttpResponseBase:
return prof.runcall(get_messages_backend, request, request.user, apply_markdown=True)
prof = cProfile.Profile()
with tempfile.NamedTemporaryFile(prefix="profile.data.", delete=False) as stats_file:
response = LogRequests(get_response)(request)
assert isinstance(response, HttpResponseBase) # async responses not supported here for now
prof.dump_stats(stats_file.name)
logging.info("Profiling data written to %s", stats_file.name)
return response
class Command(ZulipBaseCommand):
def add_arguments(self, parser: CommandParser) -> None:
parser.add_argument("email", metavar="<email>", help="Email address of the user")
self.add_realm_args(parser)
def handle(self, *args: Any, **options: Any) -> None:
realm = self.get_realm(options)
user = self.get_user(options["email"], realm)
anchor = UserMessage.objects.filter(user_profile=user).order_by("-message")[200].message_id
mock_request = HostRequestMock(
post_data={
"anchor": anchor,
"num_before": 1200,
"num_after": 200,
},
user_profile=user,
meta_data={"REMOTE_ADDR": "127.0.0.1"},
path="/",
)
mock_request.session = MockSession()
RequestNotes.get_notes(mock_request).log_data = None
profile_request(mock_request)