Earlier, we were sending 'delete_message' event to all active
subscribers of the stream.
We shouldn't send event to those users who don't have access
to the deleted message in a private stream with protected history.
This commit fixes that bug.
Also, now we use 'event_recipient_ids_for_action_on_messages'.
It helps to add hardening such that if the invariant "no usermessage
row corresponding to a message exists if the user loses access to the
message" is violated due to some bug, it has minimal user impact.
This commit fixes the event sent for updating first_message_id
when a message is deleted, to include the name field as it is
required for all "stream/update" events.
This commit also adds a test in test_events for the case when
first_message_id of a stream is updated on deleting a message.
We now "first_message_id" of the stream on the deletion of the first
message that was sent to it. This results in 1 extra query when any
stream message is deleted and 3 extra queries when the first message
sent to any stream is deleted.
Fixes#28877.
django-stubs 4.2.1 gives transaction.on_commit a more accurate type
annotation, but this exposed that mypy can’t handle the lambda default
parameters that we use to recapture loop variables such as
for stream_id in public_stream_ids:
peer_user_ids = …
event = …
transaction.on_commit(
lambda event=event, peer_user_ids=peer_user_ids: send_event(
realm, event, peer_user_ids
)
)
https://github.com/python/mypy/issues/15459
A workaround that mypy accepts is
transaction.on_commit(
(
lambda event, peer_user_ids: lambda: send_event(
realm, event, peer_user_ids
)
)(event, peer_user_ids)
)
But that’s kind of ugly and potentially error-prone, so let’s make a
helper function for this very common pattern.
send_event_on_commit(realm, event, peer_user_ids)
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This is preparatory commit for #18941.
Importing `do_delete_message` from `message_edit.py` was causing a
circular import error. In order to avoid that, we create a separate
message_delete.py file which has all the functions related to deleting
messages.
The tests for deleting messages are present in
`zerver/tests/test_message_edit.py`.
Fixes a part of #18941
Prakhar Pratyush
Vector73
Anders Kaseorg
Sahil Batra
Alex Vandiver
Lauryn Menard
madrix01