This will allow clients to display MOVED/EDITED indicators, and their
tooltips, without interacting with the `edit_history` section of
message objects, which we plan to remove in the future.
Supporting that requires both introducing both last_moved_timestamp,
and changing the definition of last_edit_timestamp to not include
message moves, which involves recalculating it at the API layer.
The last_moved_timestamp is not present if the topic moves for the
message are for resolving or unresolving the topic. It is always
present for channel moves.
Co-authored-by: Lauryn Menard <lauryn@zulip.com>
Although, currently there are no scenarios where we are using
bulk_access_messages for edit. But we might do so in the future, and
it's better to have an explicit argument called is_modiying_message in
that case, so that the person making that change makes a conscious
decision of setting that property.
This is valuable so that one is forced to explicitly make a decision
on what is correct when adding new callers. Past experience tells us that
not having to explicitly show the decision leads to people introducing
security bugs in PRs that the maintainer has to catch in review, and our
goal for access control code should be that security bugs are hard to write.
Fixes#33688.
This is valuable so that one is forced to explicitly make a decision
on what is correct when adding new callers. Past experience tells us that
not having to explicitly show the decision leads to people introducing
security bugs in PRs that the maintainer has to catch in review, and our
goal for access control code should be that security bugs are hard to write.
Fixes part of #33688.
Fixes#33567.
We have used the flag `is_modifying_message` since it's more generic
than an archived channel specific flag and helps us understand better
what is the condition where we do not want to allow archived channels.
We have not added tests for message edit since it has an existing test
for this.
This commit implements the backend of migrating the
`allow_edit_history` setting to
`message_edit_history_visibility_policy`.
This allows organizations, to have an intermediate setting to
view only the "Moves" history of the messages.
We still pass `realm_allow_edit_history` in `/register` response
though for older clients with its value being set depending on the
value of `realm_message_edit_history_visibility_policy`. We set
`realm_allow_edit_history` to `False` if the
`realm_message_edit_history_visibility_policy` is "None", and
`True` for "Moves only" or "All" message edit history.
Fixes part of #21398.
Co-authored-by: Shlok Patel <shlokcpatel2001@gmail.com>
Co-authored-by: Tim Abbott <tabbott@zulip.com>
This commit is a part of the work to support empty string
as a topic name.
Previously, empty string was not a valid topic name.
Adds backward compatibility for topic names in `unread_msgs`
objects returned in `/register` response.
This commit is a part of the work to support empty string
as a topic name.
Previously, empty string was not a valid topic name.
Adds `allow_empty_topic_name` boolean parameter to `GET /messages`
and `GET /messages/{message_id}` endpoints to decide whether the
topic names in the fetched messages can be empty strings.
If False, the topic names in the fetched message will have the
value of `realm_empty_topic_display_name` field in `POST /register`
response replacing "" for channel messages.
For an incoming 1:1 DM, the recipient’s own recipient_id is useless to
the recipient themselves. Substitute the sender’s recipient_id, so the
recipient can use recipient_id as documented to uniquely represent the
set of 2 users in this conversation.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This adds `normalize_body_for_import` to normalize messages from
third-party importers by removing NUL bytes and also updates import
test files data to test this.
Fixes#31930.
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 adds code to handle guests separately for group
based settings, where guest will only have permission if
that particular setting can be set to "role:everyone" group
even if the guest user is part of the group which is used
for that setting. This is to make sure that guests do not
get permissions for actions that we generally do not want
guests to have.
Currently the guests do not have permission for most of them
except for "Who can delete any message", where guest could
delete a message if the setting was set to a user defined
group with guest being its member. But this commit still
update the code to use the new function for all the settings
as we want to have a consistent pattern of how to check whether
a user has permission for group-based settings.
When using the sub-expression purely for filtering, and not for
accessing the value in the resultset, .alias() is potentially faster
since it does not pull the value in as well.
This commit performs a sweep on the first batch of non API
files to rename "huddle" to "direct_message_group`.
It also renames variables and methods of type -
"huddle_message" to "group_direct_message".
This is a part of #28640
Earlier, the 'remove_single_newlines' function wasn't working
correctly when '\n' was followed by asterix, hyphen, or number.
Specifically, they were not added as a syntax for ordered or
unordered list in markdown.
For example, see the workaround fix in 330439a83b.
This commit updates the function to replace '\n' with ' ', when
"\n" is not preceded by "\n" and not followed by:
* Another newline (\n)
* A hyphen followed by a space
* An asterisk followed by a space
* A number followed by a dot and a space
We won't have to do fixes like 330439a83b in the future.
This commit updates code, majorly in tests, to use
setting values from enums instead of directly using
the constants defined in Realm.
We still have those constants defined Realm as they
are used in a couple of places where the same code
is used for different settings. These will be
handled later.
This commits fixes the code which checks group mention permission
to handle anonymous user groups correctly. Basically we were
not checking whether the UserGroup is linked to a NamedUserGroup
and directly accessing named_user_group which results in an
error.
We also update the error messages to include the group name
which has permission to mention the groups since now there
might be a comnbination of groups and users who has permission
to mention the group.
This commit also adds tests to check sending and editing messages
when can_mention_group is set to a anonymous user group.
The returns plugin hasn’t been updated for mypy ≥ 1.6. This
annotation is more limited in that it only supports a fixed number of
positional arguments and no keyword arguments, but is good enough for
our purposes.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
This commit updates code to access name from named_user_group
field which points to the "NamedUserGroup" instead of directly
accessing name from "UserGroup", since name field will only
be present on NamedUserGroup objects in further commits.
f92d43c690 added uses of `@overload` to probide multiple type
signatures for `access_message`, based on the `get_user_message`
parameter. Unfortunately, mypy does not check the function body
against overload signatures, so it allows type errors to go
undetected.
Replace the overloads with two functions, for one of which also
returns the usermessage. The third form, of only returning if the
usermessage exists, is not in a high-enough performance endpoint that
a third form is worth maintaining; it uses the usermessage form.
For multiline strings in triple quotes, a '\n' is included
at the end of each line.
Earlier, to skip '\n' we used to add an escape character '\'
at the end of each line.
This commit adds a function to avoid manually adding '\'.
For the common case of not needing to reference the UserMessage row
later, and for being a stream without private history, the UserMessage
row is irrelevant. Convert `has_user_message` to a thunk, and defer
loading it unless necessary.
Replaced HUDDLE attribute with DIRECT_MESSAGE_GROUP using VS Code search,
part of a general renaming of the object class.
Fixes part of #28640.
Co-authored-by: JohnLu2004 <JohnLu10212004@gmail.com>
Having a non-identity `cache_transformer` is no different from running
it on every row of the query_function. Simplify understanding of the
codepath used in caching by merging the pieces of code.
Rather than pass around a list of message objects in-memory, we
instead keep the same constructed QuerySet which includes the later
propagated messages (if any), and use that same query to pick out
affected Attachment objects, rather than limiting to the set of ids.
This is not necessarily a win -- the list of message-ids *may* be very
long, and thus the query may be more concise, easier to send to
PostgreSQL, and faster for PostgreSQL to parse. However, the list of
ids is almost certainly better-indexed.
After processing the move, the QuerySet must be re-defined as a search
of ids (and possibly a very long list of such), since there is no
other way which is guaranteed to correctly single out the moved
messages. At this point, it is mostly equivalent to the list of
Message objects, and certainly takes no less memory.
This applies access restrictions in SQL, so that individual messages
do not need to be walked one-by-one. It only functions for stream
messages.
Use of this method significantly speeds up checks if we moved "all
visible messages" in a topic, since we no longer need to walk every
remaining message in the old topic to determine that at least one was
visible to the user. Similarly, it significantly speeds up merging
into existing topics, since it no longer must walk every message in
the new topic to determine if the user could see at least one.
Finally, it unlocks the ability to bulk-update only messages the user
has access to, in a single query (see subsequent commit).
The previous query suffered from bad corner cases when the user had
received a large number of direct messages but sent very few,
comparatively. This mean that the first half of the UNION would
retrieve a very large number of UserMessage rows, requiring fetching a
large number of Message rows, merely to throw them away upon
determining that the recipient was the current user.
Instead of merging two queries of "last 1k received" + "last 1k sent",
we instead make better use of the UserMessage rows to find "last 1k
sent or received." This may change the list of recipients, as large
disparities in sent/received messages may result in pushing the
most-recently-sent users off of the list. These are likely uncommon
edge cases, however -- and the disparity is the whole reason for the
performance problem.
This also provides more correct answers. In the case where a user's
1001'th message sent was to person A today, but my most recent message
received was from them yesterday, the previous plan would show the
message I received yesterday message-id as the max, and not the more
recent message I sent today.
While we could theoretically raise the `RECENT_CONVERSATIONS_LIMIT` to
more frequently match the same recipient list as previously, this
increases the cost of the most common cases unreasonably. With a
1000-message limit, the common cases are slightly faster, and the tail
latencies are very much improved; raising `RECENT_CONVERSATIONS_LIMIT`
would increase the result similarity to the old algorithm, at the cost
of the p50 and p75.
| | Old | New |
| ------ | ------- | ------- |
| Mean | 0.05287 | 0.02520 |
| p50 | 0.00695 | 0.00556 |
| p75 | 0.05592 | 0.03351 |
| p90 | 0.14645 | 0.08026 |
| p95 | 0.20181 | 0.10906 |
| p99 | 0.30691 | 0.16014 |
| p99.9 | 0.57894 | 0.19521 |
| max | 22.0610 | 0.22184 |
On the whole, however, the much more bounded worst case are worth the
small changes to the resultset.
This is preparatory work towards adding a Topic model.
We plan to use the local variable name as 'topic' for
the Topic model objects.
Currently, we use *topic as the local variable name for
topic names.
We rename local variables of the form *topic to *topic_name
so that we don't need to think about type collisions in
individual code paths where we might want to talk about both
Topic objects and strings for the topic name.
