Files
zulip/version.py
Cyril Pletinckx 9afde790c6 email: Open a single SMTP connection to send email batches.
Previously the outgoing emails were sent over several SMTP
connections through the EmailSendingWorker; establishing a new
connection each time adds notable overhead.

Redefine EmailSendingWorker worker to be a LoopQueueProcessingWorker,
which allows it to handle batches of events. At the same time, persist
the connection across email sending, if possible.

The connection is initialized in the constructor of the worker
in order to keep the same connection throughout the whole process.
The concrete implementation of the consume_batch function is simply
processing each email one at a time until they have all been sent.

In order to reuse the previously implemented decorator to retry
sending failures a new method that meets the decorator's required
arguments is declared inside the EmailSendingWorker class. This
allows to retry the sending process of a particular email inside
the batch if the caught exception leaves this process retriable.

A second retry mechanism is used inside the initialize_connection
function to redo the opening of the connection until it works or
until three attempts failed. For this purpose the backoff module
has been added to the dependencies and a test has been added to
ensure that this retry mechanism works well.

The connection is closed when the stop method is called.

Fixes: #17672.
2021-04-26 17:27:22 -07:00

49 lines
1.9 KiB
Python

import os
ZULIP_VERSION = "4.0-dev+git"
# Add information on number of commits and commit hash to version, if available
zulip_git_version_file = os.path.join(
os.path.dirname(os.path.abspath(__file__)), "zulip-git-version"
)
if os.path.exists(zulip_git_version_file):
with open(zulip_git_version_file) as f:
version = f.read().strip()
if version:
ZULIP_VERSION = version
LATEST_MAJOR_VERSION = "3.0"
LATEST_RELEASE_VERSION = "3.0"
LATEST_RELEASE_ANNOUNCEMENT = "https://blog.zulip.org/2020/07/16/zulip-3-0-released/"
# Versions of the desktop app below DESKTOP_MINIMUM_VERSION will be
# prevented from connecting to the Zulip server. Versions above
# DESKTOP_MINIMUM_VERSION but below DESKTOP_WARNING_VERSION will have
# a banner at the top of the page asking the user to upgrade.
DESKTOP_MINIMUM_VERSION = "5.0.0"
DESKTOP_WARNING_VERSION = "5.2.0"
# Bump the API_FEATURE_LEVEL whenever an API change is made
# that clients might want to condition on. If we forget at
# the time we make the change, then bump it later as soon
# as we notice; clients using API_FEATURE_LEVEL will just not
# use the new feature/API until the bump.
#
# Changes should be accompanied by documentation explaining what the
# new level means in templates/zerver/api/changelog.md.
API_FEATURE_LEVEL = 57
# Bump the minor PROVISION_VERSION to indicate that folks should provision
# only when going from an old version of the code to a newer version. Bump
# the major version to indicate that folks should provision in both
# directions.
# Typically,
# * adding a dependency only requires a minor version bump;
# * removing a dependency requires a major version bump;
# * upgrading a dependency requires a major version bump, unless the
# upgraded dependency is backwards compatible with all of our
# historical commits sharing the same major version, in which case a
# minor version bump suffices.
PROVISION_VERSION = "141.3"