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.
This commit adds code to not include original details of senders like
name, email and avatar url in the message objects sent through events
and in the response of endpoint used to fetch messages.
This is the last major commit for the project to add support for
limiting guest access to an entire organization.
Fixes#10970.
Now, the topic wildcard mention follows the following
rules:
* If the topic has less than 15 participants , anyone
can use @ topic mentions.
* For more than 15, the org setting 'wildcard_mention_policy'
determines who can use @ topic mentions.
Earlier, topic wildcard mentions followed the same restriction
as stream wildcard mentions, which was incorrect.
Fixes part of #27700.
We now send user creation events to recipient users
when sending DMs if recipients gain access to either
sender or other pariticpating users in the DM.
Rename the existing 'wildcard_mentioned' flag to
'stream_wildcard_mentioned'.
The 'wildcard_mentioned' flag is deprecated and exists for
backwards compatibility.
We have two separate flags for stream and topic wildcard mentions,
i.e., 'stream_wildcard_mentioned' and 'topic_wildcard_mentioned',
respectively.
* stream wildcard mentions: `@all`, `@everyone`, and `@stream`
* topic wildcard mentions: `@topic`
The `wildcard_mentioned` flag is included in the events and
API response if either `stream_wildcard_mentioned` or
`topic_wildcard_mentioned` is set.
Earlier, the 'wildcard_mentioned' flag was set for both the
stream and topic wildcard mentions.
Now, the 'topic_wildcard_mentioned' flag is set for topic
wildcard mentions, and the 'wildcard_mentioned' flag is set for
stream wildcard mentions.
We will rename the 'wildcard_mentioned' flag to
'stream_wildcard_mentioned' in a later commit.
Add an optional `automatic_new_visibility_policy` enum field
in the success response to indicate the new visibility policy
value due to the `automatically_follow_topics_policy` and
`automatically_unmute_topics_in_muted_streams_policy` user settings
during the send message action.
Only present if there is a change in the visibility policy.
This commit adds two user settings, named
* `automatically_follow_topics_policy`
* `automatically_unmute_topics_in_muted_streams_policy`
The settings control the user's preference on which topics they
will automatically 'follow' or 'unmute in muted streams'.
The policies offer four options:
1. Topics I participate in
2. Topics I send a message to
3. Topics I start
4. Never (default)
There is no support for configuring the settings through the UI yet.
Earlier, 'is_row_muted' returned 'true' if the message was in
a muted stream or muted topic.
If the message is in an unmuted or followed topic in a muted
stream, such topics should be treated as not muted topics
in an unmuted stream.
This commit fixes the incorrect behavior.
Now, for wildcard mentions, 'unread_msgs.mentions' exclude
the IDs in muted streams only if the message is in default or
muted topic.
Also, 'unread_msgs.count' takes into account the unreads in unmuted
or followed topics in muted streams too.
Documents that this bug was fixed in the API changelog.
Update 'get_muted_stream_ids' to return a set of IDs
instead of a list.
This will help to avoid linear time search operations later
while using 'if stream_id in muted_streams_ids'.
This prep commit renames the 'build_topic_mute_checker' function
to 'build_get_topic_visibility_policy' and updates it to support
all the visibility policies.
The function prefetches the visibility policies the user has
configured for various topics and prepares a dict named
'topic_to_visibility_policy' to be used later on.
This query has two halves; messages set by the user, and messages
received by the user. The former uses the already-specific
usermessage privatemessage flag index; the latter relies on the
recipient index on messages.
Add the realm_id to the latter half, so that the recipient_id is
paired with the realm_id.
The name and docstring were just wrong, having a UserMessage row isn't
sufficient for having message access and is actually only relevant in a
private stream with private history. The function is only used in a
single place anyway, in bulk_access_messages.
The comment mentioning this function in handle_remove_push_notification
can be tweaked to just not mention any function specifically and just
say why we're not checking message access.
Users who used to be subscribed to a private stream and have been
removed from it since retain the ability to edit messages/topics, and
delete messages that they used to have access to, if other relevant
organization permissions allow these actions. For example, a user may be
able to edit or delete their old messages they posted in such a private
stream. An administrator will be able to delete old messages (that they
had access to) from the private stream.
We fix this by fixing the logic in has_message_access (which lies at the
core of our message access checks - access_message() and
bulk_access_messages())
to not rely on only a UserMessage row for checking access but also
verify stream type and subscription status.
We have modified the code to directly fetch realm from Message
object instead of "sender" field and thus we no longer need to
fetch "sender__realm" using select_related.
We do not want to access realm from "sender" field so that
we do not need to pass "sender__realm" argument to
select_related call when querying messages. We can instead
pass realm as argument to wildcard_mention_allowed.
We can directly get the realm object from Message object now
and there is no need to get the realm object from "sender"
field of Message object.
After this change, we would not need to fetch "sender__realm"
field using "select_related" and instead only passing "realm"
to select_related when querying Message objects would be enough.
This commit also updates a couple of cases to directly access
realm ID from message object and not message.sender. Although
we have fetched sender object already, so accessing realm_id
from message directly or from message.sender should not matter,
but we can be consistent to directly get realm from Message
object whenever possible.
For topic wildcard mentions, the 'wildcard_mentioned' flag is set
for those user messages having 'user_profile_id' in
'topic_participant_user_ids', i.e. all topic participants.
Earlier, the flag was set if the 'user_profile_id' exists in
'all_topic_wildcard_mention_user_ids'.
'all_topic_wildcard_mention_user_ids' contains the ids of those
users who are topic participants and have enabled notifications
for '@topic' mentions.
The earlier approach was incorrect, as it would set the
'wildcard_mentioned' flag only for those topic participants
who have enabled the notifications for '@topic' mention instead
of setting the flag for all the topic participants.
The bug was introduced in 4c9d26c.
This commit renames the keyword 'pm' to 'dm' in the
'pm_mention_email_disabled_user_ids' and
'pm_mention_push_disabled_user_ids' attributes of the
'RecipientInfoResult' dataclass.
'pm' and 'dm' are the acronyms for 'private message' and
'direct message' respectively.
It includes 'TODO/compatibility' code to support the old format
fields in the tornado queues during the Zulip server upgrades.
This commit adds code to pass all the required arguments to
select_related call for Message objects such that only the
required related fields are fetched from the database.
Previously, we did not pass any arguments to select_related,
so all the directly and indirectly related fields were fetched
when many of them were actually not being used and made the
query unnecessarily complex.
This commit completes the notifications part of the @topic
wildcard mention feature.
Notifications are sent to the topic participants for the
@topic wildcard mention.
This prep commit replaces the 'wildcard' keyword in the codebase
with 'stream_wildcard' at some places for better readability, as
we plan to introduce 'topic_wildcards' as a part of the
'@topic mention' project.
Currently, 'wildcards = ["all", "everyone", "stream"]' which is an
alias to mention everyone in the stream, hence better renamed as
'stream_wildcards'.
Eventually, we will have:
'stream_wildcard' as an alias to mention everyone in the stream.
'topic_wildcard' as an alias to mention everyone in the topic.
'wildcard' refers to 'stream_wildcard' and 'topic_wildcard' as a whole.
This commit adds backend code to check whether user has permission
to mention a group while sending message as per the can_mention_group
setting of the group.
Fixes a part of #25927.
This commit makes it possible for users to control the wildcard
mention notifications for messages sent to followed topics
via a global notification setting.
There is no support for configuring this setting
through the UI yet.
This commit makes it possible for users to control
the push notifications for messages sent to followed topics
via a global notification setting.
There is no support for configuring this setting
through the UI yet.
Tim Abbott
Prakhar Pratyush
Alex Vandiver
John Lu
Anders Kaseorg
Sahil Batra
Prakhar Pratyush
Mateusz Mandera
Steve Howell
Lauryn Menard