Applies the logic to allow community members to edit topics
of others' messages if this setting is True. Otherwise,
only administrators can update the topic of others' messages.
This logic includes a 24-hour time limit for community topic editing.
We now consistently set our query limits so that we get at
least `num_after` rows such that id > anchor. (Obviously, the
caveat is that if there aren't enough rows that fulfill the
query, we'll return the full set of rows, but that may be less
than `num_after`.) Likewise for `num_before`.
Before this change, we would sometimes return one too few rows
for narrow queries.
Now, we're still a bit broken, but in a more consistent way. If
we have a query that does not match the anchor row (which could
be true even for a non-narrow query), but which does match lots
of rows after the anchor, we'll return `num_after + 1` rows
on the right hand side, whether or not the query has narrow
parameters.
The off-by-one semantics here have probably been moot all along,
since our windows are approximate to begin with. If we set
num_after to 100, its just a rough performance optimization to
begin with, so it doesn't matter whether we return 99 or 101 rows,
as long as we set the anchor correctly on the subsequent query.
We will make the results more rigorous in a follow up commit.
This generic function isolates the before/after logic that really
is independent of Message and doesn't need to clutter up
`get_messages_backend`. Also, introducing a new namespace
reduces some shadowing/mutation with variables like `query`.
It's a pure code move, with some very minor renaming (e.g.
inner_msg_id_col -> id_col).
If anchor is 0, there is no sense doing a before_query.
Likewise, if anchor is `LARGER_THAN_MAX_MESSAGE_ID`, there is
no sense doing an after_query.
We introduce variables called `need_before_query` and
`need_after_query` to enforce those conditions.
This also adds some comments explaining the fallthrough case
where neither query makes sense.
If use_first_unread_anchor is set and we don't have any unread
messages, then our anchor is effectively "positive infinity" and
we can streamline queries.
In the past we'd have clauses like `message_id <= 999999999999999`
in the query that were harmless but crufty.
We want to say `if num_after > 0` when we expect num_after to be
a positive integer. We don't want any confusion that we will
execute the blocks for values of -7 or None.
This may be helpful for some API clients, since it avoids them needed
to do somewhat messy post-processing on the results (the data was
always available via scanning for the first unread message in the result).
Fixes#6244.
This is responsible for:
1.) Handling all the incoming requests at the
messages endpoint which have defer param set. This is similar to
send_message_backend apart from the fact that instead of really
sending a message it schedules one to be sent later on.
2.) Does some preliminary checks such as validating timestamp for
scheduling a message, prevent scheduling a message in past, ensure
correct format of message to be scheduled.
3.) Extracts time of scheduled delivery from message.
4.) Add tests for the newly introduced function.
5.) timezone: Add get_timezone() to obtain tz object from string.
This helps in obtaining a timezone (tz) object from a timezone
specified as a string. This string needs to be a pytz lib defined
timezone string which we use to specify local timezones of the
users.
This commit puts the guts of parse_usermessage_flags into
UserMessage.flags_list_for_flags, since it was slightly faster
than the old implementation and produced the same results.
(Both algorithms were super fast, actually.)
And then all callers use the model method now.
The logic to set search_fields was essentially the same for both
sides of the include_history conditional.
Now we have just one code block that sets search_fields, and we
can quickly short-circuit the loop when is_search is False.
tsearch_extras returns search offsets in bytes but our highlight
function treated them as character offsets. Added a check to subtract
extra bytes if the tsearch search backend is being used.
Fixes#4084.
Fixes#7021.
Do you call get_recipient(Recipient.STREAM, stream_id) or
get_recipient(stream_id, Recipient.STREAM)? I could never
remember, and it was not very type safe, since both parameters
are integers.
Before this change, we populated two cache entries for each
message that we sent. The entries were largely redundant,
with the only difference being whether we sent the content
as raw markdown or as the rendered HTML.
This commit makes it so we only have one cache entry per
message, and it includes both content and rendered_content.
One legacy source on confusion here is that `content`
changes meaning when you're on the front end. Here is the
situation going forward:
database:
content = raw
rendered_contented = rendered
cache entry:
content = raw
rendered_contented = rendered
payload for the frontend:
content = raw (for apply_markdown=False)
content = rendered (for apply_markdown=True)
Clients fetching messages can now specify that they are able
to compute their avatar, and if they set client_gratavar to
True in the request (w/our normal encoding scheme), then the
backend will not compute it, and the payload will be smaller.
The fix starts with get_messages_backend. The flag gets
passed down through these functions:
* MessageDict.post_process_dicts.
* MessageDict.set_sender_avatar.
We also fix up the callers for post_process_dicts to explicitly
pass in the client_gravatar path, but for now they all just hard
code the value to False.
Message.get_raw_db_rows is moved to MessageDict, since its
implementation details are highly coupled to other methods
in MessageDict.
And then sew_messages_and_reactions comes along for the
ride.
We eventually want to move Reaction.get_raw_db_rows to there
as well.
Introduce MessageDict.post_process_dicts() will allow us
the ability to do the following:
* use less memory in the cache for repeated data
* prevent cache invalidation
* format data according to different client needs
The first use of this function is pretty inconsequential, but
it sets us up for more consequential changes.
In this commit we defer the MessageDict.hydrate_recipient_info
step until after we pull data out of the cache. This impacts
cache size as follows:
* streams - negligibly bigger
* PMs/huddles - slimmer due to not needing to repeat
sender data like email/full_name
Again, the main point of this change is to start setting up
the infrastructure to do post-processing.
Sarah
Steve Howell
Tim Abbott
neiljp (Neil Pilgrim)
Shubham Padia
rht
Aditya Bansal
Vishnu Ks
Rhea Parekh
picapi_
Robert Hönig
Sampriti Panda
YJDave
Greg Price