Bug fixes
---------
- ``BitbucketServerCoreAPIStatusPush`` now handles epoch time format in events as well as `datetime.datetime`.
- Fixed buildrequest cancel requests being ignored under certain infrequent conditions.
- Fixed an issue in lock handling which caused step locks to be acquired in excess of their configured capacity under certain conditions (5655, 5987).
- ``OldBuildCanceller`` will now cancel builds only if a superseding buildrequest is actually created. Previously it was enough to observe a superseding change even if it did not result in actually running builds.
- Fixed ``OldBuildCanceller`` crashes when sourcestamp with no branch was ingested.
- Fixed ``ChoiceStringParameter`` fields being not present in ForceBuild Form.
- Fixed initialization of default web setting values from config.
- Fixed loading of user saved settings in React web frontend.
Changes
-------
- Added optional ``locks_acquired_at`` argument to ``master.data.updates.set_step_locks_acquired_at()``.
- Master and Worker packages have stopped using the deprecated ``distutils`` package and rely on setuptools. Worker installation now requires setuptools.
- Events between ``GerritChangeSource`` and ``GerritEventLogPoller`` are no longer deduplicated. Use ``GerritChangeSource`` with both SSH and HTTP API configured as a replacement.
- ``GitPoller`` no longer track the ``master`` branch when neither ``branch`` nor ``branches`` arguments are provided. It now track the remote's default branch.
- Improved performance of ``OpenstackWorker`` startup when there are large number of images on the server.
- ``buildbot.www.plugin.Application`` no longer accepts module name as the first parameter. It requires the name of package. In most cases where ``__name__`` was being passed, ``__package__`` is now required.
- Padding of the UI elements in the web UI has been reduced to increase density of presented data.
- Buildbot now requires SQLAlchemy 1.4.0 or newer.
- Old ``importlib_resources`` is no longer used.
Features
--------
- Added ``rebuilt_buildid`` key-value pair to buildsets to be able to keep track on which build is being rebuild.
- Buildbot now tracks total time that has been spent waiting for locks in a build.
- Added ``projectid`` and ``projectname`` properties to Build
- The ``worker_preparation`` dummy step that tracks various build startup overhead has been split into two steps to track worker startup and locks wait times separately.
- Builds now have ``builderid`` property.
- Build request cancellation has been exposed to the Data API.
- Added optional ``started_at`` and ``locks_acquired`` arguments to ``master.data.updates.startStep()``.
- ``buildbot.test.fake.httpclientservice.HTTPClientService`` now can simulate network and processing delays via ``processing_delay_s`` option to ``expect()`` method.
- Added ability to poll HTTP event API of Gerrit server to ``GerritChangeSource``. This has the following advantages compared to simply pointing ``GerritChangeSource`` and ``GerritEventLogPoller`` at the same Gerrit server:
- All events are properly deduplicated
- SSH connection is restarted in case of silent hangs of underlying SSH connection (this may happen even when ServerAliveInterval is used)
- Added ``select_next_worker`` global configuration key which sets default ``nextWorker`` customization hook on all builders.
- Added support for connecting Kubernetes workers to multiple Kubernetes clusters.
- Raw logs downloaded from the web UI now include full identifying information in the filename.
- Raw text logs downloaded from the web UI now include a small header with identifying information.
- The Rebuild button on a Build's view now redirect to the Buildrequest corresponding to the latest rebuild.
- Add a "Workers" tab to the Builder view listing workers that are assigned to this builder (7162)
- Added check for correct argument types to ``BuildStep`` and ``ShellCommand`` build steps and all steps deriving from ``ShellMixin``. This will avoid wrong arguments causing confusing errors in unrelated parts of the codebase.
- Implemented a check for step attempting to acquire the same lock as its build.
- Implement support for customizing ``affinity`` and ``nodeSelector`` fields in Kubernetes pod spec for Kubernetes worker.
- The debug tab in build page now shows previous build that has been built on the same worker for the same builder. This helps debugging any build directory cleanup problems in custom Buildbot setups.
- Add support for case insensitive search within the logs.
- Add support for regex search within the logs.
Deprecations and Removals
-------------------------
- ``buildbot.process.factory.Distutils`` factory has been deprecated.
- ``HashiCorpVaultSecretProvider`` has been removed.
- ``GerritStatusPush`` no longer accepts deprecated arguments: ``reviewCB``, ``startCB``, ``reviewArg``, ``startArg``, ``summaryCB``, ``summaryArg``, ``builders``, ``wantSteps``, ``wantLogs``.
- Deprecated module-level attributes have been deleted.
- ``GerritStatusPush`` callback functions now can only return dictionary type.
- AngularJS web frontend has been removed.
- Deprecated ``LineBoundaryFinder callback`` argument has been removed.
- Removed Python 2.7 support on the worker. This does not affect compatibility of connecting workers running old versions of Buildbot to masters running new versions of Buildbot.