We've been running this change on zulipchat.com for a couple of months
now. Before then, we used to regularly get exceptions like this:
File "./zerver/views/messages.py", line 749, in get_messages_backend
setter=stringify_message_dict)
File "./zerver/lib/cache.py", line 275, in generic_bulk_cached_fetch
cache_set_many(items_for_remote_cache)
File "./zerver/lib/cache.py", line 215, in cache_set_many
get_cache_backend(cache_name).set_many(items, timeout=timeout)
File "/home/zulip/deployments/2017-09-28-21-04-12/zulip-py3-venv/lib/python3.5/site-packages/django/core/cache/backends/memcached.py", line 150, in set_many
self._cache.set_multi(safe_data, self.get_backend_timeout(timeout))
pylibmc.Error: error 48 from memcached_set_multi
This error means memcached was unable to find space for the new value.
You might think that because memcached provides an LRU cache, this
shouldn't happen because it would just evict something... but in fact
* memcached splits its data into "slabs" by object size, and
* until recently, once a 1MiB "chunk" is allocated to a given "slab"
i.e. size class, it wouldn't be reclaimed to allocate to another.
So once the cache has been filled up with objects of some distribution
of sizes, if some objects come in that would go in a different size
class, we have no chunks for that size class / slab, and can't get one.
And that's exactly what was happening on zulipchat.com.
Useful background can be found in
https://github.com/memcached/memcached/wiki/ServerMaint#slab-imbalancehttps://github.com/memcached/memcached/wiki/ReleaseNotes1411https://github.com/memcached/memcached/wiki/ReleaseNotes1425https://github.com/memcached/memcached/wiki/ReleaseNotes150
We're already running v1.4.25, which provides an "automover" that should
be well equipped to fix this; v1.5.0 turns it on by default.
With this commit, adopt the "modern start line" recommended in the
release notes for our v1.4.25, including turning on the automover.
This workaround is only for new users. Users who are/were using old
versions of Vagrant has to manually change the value of box
metadata_url. See https://github.com/hashicorp/vagrant/issues/9442
Apparently, we've now had the first time one of our contributors had
their account deleted (at least, the author page for the contributor
who has 21 commits in python-zulip-api now 404s).
This fixes a bug where the open graph preview bottom fade is dark
rather than white when not in dark mode, which results in a heavy
dark faded line at the bottom of the description.
This commit adds support for passing in an argument to the macro
"call" to explicitly specify a fixture to render, like so:
{generate_code_example|doc_name|fixture(stream_message_with_args)}
api/get-all-streams - make use of the api_code_example Markdown extension's
feature of recursively extracting multiple code examples from a single
test method.
To generate a code exammple,
{generate_code_example|<api_doc_md>|example} sounds better and
more intuitive than,
{generate_code_example|<api_doc_md>|method}
The count of integrations is automatically computed now, so this will
change every time we add 10 more. Just stop asserting on the number.
Thanks to @hackerkid for spotting the issue.
This code duplicated the code in setup_realm_internal_bots, with some
added logic to avoid trying to create the same bot twice. That logic
was buggy so that it would never work at all -- it subtracted a set of
UserProfile objects from a set of email strings -- so it looked like
the command might blow up when run after the users already existed.
In fact, the buggy logic wasn't necessary, because the work the
command does after it is idempotent -- in particular `create_users`,
within its subroutine `bulk_create_users`, already filters out users
that already exist. So just cut the buggy stuff out, deduplicate the
rest with `setup_realm_internal_bots`, and document that invariant on
the latter.
While we're here, in the common case bail early without doing any
per-realm work in Python, since we're running this on every upgrade.
These were removed in 953ee778f, along with the stream names and
right-sidebar user names mentioned in the commit message. But unlike
those, these don't get any background change on hover, so we need some
way to show the hover.
We can probably still do something that looks nicer than this, but
it's better than not having it.
This makes them roughly the same visual weight as the (non-muted)
stream icons below -- though that's imprecise because the latter
varies with color. Tested in both normal and dark-mode.
This reverts commit dd406e87e. Whatever awkward error message might
have motivated that change, we can fix in a more targeted way when we
see it again. This version would delete the potentially-informative
context the caller provided in `response` -- even just "Failed" --
based on whether an error message happened to contain a colon
somewhere in it, which is sure to end up feeling unpredictable.
See 625939 for more information. In short, the purpose of this delay is
to give autoreload code enough time to touch every watched file at least
once before the change is made.
The last bit of #8059 (merged as b875fe07) didn't get merged, so just adding
it as a followup.
The "Other notification settings" section will also eventually house the
"pick your notification sound" setting, which is why it isn't called "Other
email settings" or similar.
Users having only account in one realm will not be distracted by realm
name in subject lines of every email. Users who have multiple
accounts in realms can turn this setting on and receive a
corresponding realm name in email's subject.
Tweaked by tabbott to rebase and address a few small issues.
Fixes#5489.
For messages where the entire rendered body is a message_inline_image
object, we actually don't display any text and just display the
image. These messages may have links to images which might or might
not be internal to Zulip but in both cases there is a chance of this
links being broken when accessed by an email server like Gmail that
doesn't possess the recipient user's cookies.
We don't want to have ugly looking broken images displayed in email
notifications. So we patch this by inserting a replacement for the
`message_inline_image` block in which we essentially replace the
content with the textual link.
Edited for clarity by tabbott.
This is easy to do, and prevents this feature from getting a server
admin stuck in potentially a pretty uncomfortable way -- unable to
roll back a deploy.
This reverts commit acebd3a5e, as well as a subsequent fixup commit
0975bebac "quick fix: Fix migrations to be linear."
These changes need more work and thought before they're ready to
deploy on any large established Zulip server, such as zulipchat.com.
See discussion on #6534.
In place of the removed migration, leave behind a placeholder so
`manage.py migrate` doesn't get confused on installs where it was
already applied.
This adds some styling to make the open graph previews look a bit nicer,
including:
1. Adding a bottom fading gradient to slowly fade out text that is out
of bounds rather than chopping it off.
2. Using font anti-aliasing to make the characters appear smoother.
3. Increasing the font size of the title to give it prominence.
4. Changing the height to 80px from 70px.
Also refactor the "panels"/banner code to be a bit clearer about how
it's supposed to generically work, using [data-process] as a uniquely
identifying marker.
Fixes: #8166.
[greg: rebased and squashed a series of fixup commits.]
The original code made a 3/4-hearted effort to generically accommodate
more banners/"panels" later, but named itself after the first one made.
[greg: expanded commit message.]
Greg Price
Eeshan Garg
Rhea Parekh
Vishnu Ks
Tim Abbott
Robert Hönig
Brock Whittaker
Josh Mandel
Ricky
Aditya Bansal
Umair Khan
synicalsyntax
Rishi Gupta
Roman Godov
Shubham Dhama