Review Board 5.0 Beta 1 Release Notes¶
Release date: July 19, 2022
Review Board 5.0 beta 1 drops support for Python 2.7. This has been end-of-life since January 2020. The 5.x series will support Python 3.7 through 3.10.
This release contains all bug fixes and features from Review Board version 4.0.7.
To install this release, run the following:
$ sudo pip3 install \ -f https://downloads.reviewboard.org/betas/reviewboard/5.0-beta-1/ \ --pre -U ReviewBoard
We do not recommend upgrading a production server with this version of Review Board. It’s best to install on a test server, with a copy of your production database, in case there are any major problems.
This release contains database schema changes to the following tables:
This will take a small amount of time to migrate the database. Please test the upgrade on a copy of your database first, to ensure the upgrade is smooth and to time how long the upgrade takes.
Do not cancel the upgrade on a production system for any reason. Doing so will corrupt your database, requiring a backup or our repair service.
Review Board 5.0 supports Python 3.7-3.10.
Django 3.2.x is required
Djblets 3.0 beta 1 is required
django_evolution 2.2 beta 1 is required.
django-haystack 3.2.x is required.
django-oauth-toolkit 1.6.x is required.
Switched Memcached interface from python-memcached to pymemcache.
Removed the elasticsearch dependency by default.
See the release notes below for enabling Elasticsearch support.
SAML 2.0 Single Sign-On¶
Single Sign-On (SSO) is increasingly important in the enterprise world, providing centralized user and application provisioning and much better security.
Review Board now supports SAML 2.0 for authentication and user provisioning. This allows the use of Auth0, OneLogin, Okta, and many other SSO providers.
See SAML 2.0 Authentication for more information.
Detection of Trojan Source Attacks¶
Trojan Source attacks employ special Unicode characters, such as bi-directional control characters, zero-width spaces, or confusable/homoglyph characters (which have the appearance of other common character) to trick reviewers into approving possibly malicious code.
These are CVE-2021-42574 and CVE-2021-42694, and affect many tools on the market (code review tools, IDEs, repository browsers, and more).
Review Board now detects characters that can be used in these attacks, and flags them in the diff viewer. When found, a helpful notice with examples and informative links will be shown at the top of the file, and the lines themselves will be flagged.
The Unicode characters will be highlighted, replaced with the Unicode codepoint, rendering the attack harmless. Reviewers can click a button to see how the code would have looked.
This will also be shown when previewing a diff before publishing, in case any new code was copied/pasted from a malicious source.
Support for Elasticsearch 1.x, 2.x, 5.x, and 7.x¶
Previously, due to compatibility issues in the search backend package we use, only Elasticsearch 1.x and 2.x were available. We now support 5.x and 7.x.
To enable the version you want, you must install the appropriate version of the elasticsearch package. We provide the following convenient packages:
pip3 install ReviewBoard[elasticsearch1]
pip3 install ReviewBoard[elasticsearch2]
pip3 install ReviewBoard[elasticsearch5]
pip3 install ReviewBoard[elasticsearch7]
See Elasticsearch Configuration for more information.
Matrix is a modern, decentralized chat service. It allows individual servers to be set up and federated, and supports many chat features, including end to end encryption.
Review Board can now post to Matrix when review requests are posted or updated, or whenever there’s new discussions on the review request.
See the documentation for configuration instructions.
Patch by Ruonan Jia.
Added custom configuration for syntax highlighters in diffs.
The choice of syntax highlighters has traditionally been left up to the decisions made by the Pygments library. In most cases it is correct, but sometimes the wrong lexer would be chosen for certain filenames. This can now be overridden on a case-by-case basis, mapping file extensions to Pygments lexer names. These mappings can be configured in the Diff Viewer settings within the Review Board admin UI.
Significant improvements have been made to database query performance for dashboards. This should be especially noticible on very large servers with many repositories and review groups.
Additional database performance improvements will be coming in the next 5.0 prerelease.
Added new API for querying all Reviews. This allows making queries of all Reviews across all Review Requests (for example, finding all reviews added by a given user).
Based on work by Taylor Christie.
Added new APIs for querying all comments. These allow making queries of all comments across all Review Requests (for example, finding all diff comments added by a given user).
Based on work by Chaoyu Xiang.
Internal/Extension API Changes¶
Several of Review Board’s internal APIs have been modernized.
SCMTools have traditionally been defined using Python entry points, and a
management command had to be run to scan the entry points and add a row to the
scmtools_tool table in the database. We’ve changed this to instead use a
registry. Entry points and the
model will still work in Review Board 5.0, but this usage is deprecated and
will be removed in a future release.
As part of this, a new extension hook,
SCMToolHook has been added. We
recommend anybody who has implemented a custom SCMTool change their code to use
the new hook instead of entry points.
return promises. The promises can either be used directly, or can be used
implicitly through the use of
await. The callback usage is
still available, but has been deprecated and will be removed in a future
New Python Test Runner¶
Python unit tests are now run via the pytest test runner.
Fixed a handful of issues that could occur when a new review request was discarded before being published, but then updated again via RBTools.
Fixed switching between “Source” and “Rendered” views when viewing a diff of Markdown-type file attachments.
Corrected the help text that would be displayed if an extension fails to load.
Fixed potential problems with environment variables when executing brz (Breezy).
Fixed ID collision when resolving issues.
If multiple issues were opened on a review request with different comment types (for example, a diff comment and a general comment), and the issues happened to have the same ID, attempting to mark them as fixed or dropped would cause all issues with that same ID to be changed, regardless of type.
Jordan Van Den Bruel