The new method borrows some code from the event loop
and unread_ops.mark_messages_as_read, and it is now
flexible about message_ids being marked as unread
even when there is no corresponding message in the
message store. For that scenario we still want to
update our data structures, which wasn't happening
before this change. (Generally, this was a non-issue
up until now, but it will become a bigger issue when
we start loading unread message ids from the server.)
This function allows us to see whether unread.js thinks a message
id is unread (as opposed to looking at the message itself). This
method is useful when we get notifications from the server that a
message has been read. In the future, we may not actually have
a local copy of an unread message, but we'll still know that it is
unread based on page_params. We'll want to update the data in that
case.
Going forward, we'll want to deprecate message.flags for most use
cases and just use the unread.js data structures to track unread
messages.
This now breaks the process of cleaning up unread counts for
non-active streams into a three step process.
This allows us to use our unread message flags index, at least
in testing on dev. Here is the relevant excerpt from explain
analyze:
Bitmap Index Scan on zerver_usermessage_unread_message_id
This makes supervisor see the service as cheerfully running
and let it alone, rather than constantly retry starting it.
Because the crash/restart loop means repeatedly spending a
couple of seconds loading Django and the app, separated by
brief periods while supervisor notices the crash and acts
on it, it was actually consuming about 30-50% CPU on the
zulipchat.com staging server.
The prior implementation was needlessly complex. Both del() and
add() are cheap and idempotent.
With this change we no longer bother to delete a topic from a
dictionary when its last message is mark as read, since it doesn't
really help performance. We add a line to the tests to maintain
100% line coverage.
zerver/message.py used it in this way previously when the type was not
a stream, so the type has been set to match usage and implementation.
Also added docstring to clarify this for the specific function.
In a subsequent commit, we may have unread counts for
deactivated users. There is no reason to fail hard on these
scenarios; if there is no list item for a user_ids_string,
updating the unread count should be a noop.
It's not always clear whether user_ids are strings or integers, so
we explicitly convert them to integers for sorting when creating
keys for PMs.
To keep the tests passing, this commit removes some unneeded
defensive code in message_store.js that only applies to contrived
test input.
Steve Howell
Steve Howell
Pweaver (Paul Weaver)
Greg Price
neiljp (Neil Pilgrim)
Brock Whittaker
Umair Khan
Vaida Plankyte
Rishi Gupta
Tim Abbott