Release Notes

wmflib Changelog

v1.2.0 (2022-04-04)

New features

  • prometheus: add support for Thanos

    • Extract the common functionalities into a PrometheusBase class.

    • Have the existing Prometheus class inherit from PrometheusBase.

    • Add a new Thanos class that inherits from PrometheusBase to query the Thanos endpoint.

    • For Thanos queries set the deduplicate parameter always to true and the partial response one always to false to ensure to have unique data and all the data, respectively.

    • See also the Thanos#Global_view Wikitech page.

Minor improvements

  • prometheus: allow to specify a different Prometheus instance from the default ops one, while keeping backward compatibility.

Bug fixes

  • interactive: catch Ctrl+c / Ctrl+d on ask_input() to handle them properly.


  • requests: fix docstring regarding the timeout type.

v1.1.2 (2022-03-09)

Bug fixes

  • requests: fix backward compatibility with urllib3 also in the tests.

v1.1.1 (2022-03-09)

Bug fixes

  • requests: fix backward compatibility with urllib3

    • Versions before 1.26.0 accept only the old parameter name ‘method_whitelist’, that will be removed in version 2.0.

    • Keep backward compatibility with previous versions of urllib3.

v1.1.0 (2022-03-09)

Minor improvements

  • requests: allow to customize the list of HTTP methods and HTTP status codes that should trigger a retry as the existing generic values might need to be tweaked at times.


  • prospector: ignore deprecation message

    • The latest prospector issues a deprecated message for the pep8 and pep257 tools that have been renamed to pycodestyle and pydocstyle respectively. The new names are incompatible with prospector < 1.7.0, so for now keep the old names and disable the deprecation warning.

v1.0.2 (2022-02-14)

Bug fixes

  • requests: fix timeout parameter of http_session() so that is gets always propagated to the underlying calls to the requests library as that was not always the case. Clarify in the documentation how to unset the timeout for a single call when using this session.

v1.0.1 (2022-02-09)

Minor improvements

  • requests: add support to specify connection and read timeouts separately.

    • Set the default connection timeout to 3s and keep the existing read timeout to 5s.


  • temporarily add upper limit to dnspython, the latest 2.2.0 version generates mypy issues.

v1.0.0 (2021-11-11)

Minor improvements

  • constants: add the new drmrs datacenter to existing constants.

  • constants: add CORE_DATACENTERS constant currently defined in Spicerack.

  • Adopt pathlib.Path everywhere in the project:

    • Accept both str and os.PathLike objects in the config and fileio modules for file name parameters.

    • Use pathlib.Path instead of the os.path functions across the project.

  • style: adopt f-strings, converting all format() calls to f-strings when feasible.

  • interactive: change input prefix to ==>:

    • Change the input prefix from >>> to ==> to allow for code examples in an interactive Python console to be used in docstrings as documentation without having issues with the syntax highlighter.

  • docs: add usage examples to all modules.


  • versioning: fully adopt semantic versioning starting with this release.

  • pylint: fix newly reported issues.

v0.0.9 (2021-08-04)

Minor improvements

  • decorators: improve the @retry decorator.

    • Add a new optional dynamic_params_callbacks parameter to the @retry decorator.

    • This parameter accepts a tuple of callbacks that will be called by the decorator and allow them to modify the parameters of the decorator itself at runtime.

    • Fix the signature of retry now that the upstream bug in pylint has been fixed and the newer version is included in prospector. This allows to remove some type ingore that were required before.

  • idm: make the cn and uid arguments of logoutd_args() both required so that the logoutd scripts that adhere to this API can safely rely on both being present. The logout cookbook is already passing both parameters anyway.


  • idm: fix typo in docstring.

v0.0.8 (2021-06-23)

New features

  • idm: add a new idm module with support for global logout (T283242):

    • To ensure that all Python logout scripts will have the same set of arguments and to reduce everyone repeating the same argparse block, a LogoutdBase abstract class was added.

    • It features also a logoutd_args() function that provides the common argparse setup for all the logoutd scripts.

    • See the module’s documentation for example usages.

Minor improvements

  • constants: add DATACENTER_NUMBERING_PREFIX constant to map datacenter names to their numbering prefix used in hostnames.

Bug fixes

  • interactive: also check term for tmux in ensure_shell_is_durable().

  • tests: fix pip backtracking moving prospector tests to their own virtual environments.


  • Add official support for Python 3.9

  • fileio: uniform quotes used in the file.

  • add types dependencies for mypy for the dependencies that don’t have yet type hints.

  • CHANGELOG: fix typo in the v0.0.7 release notes.

v0.0.7 (2021-02-18)

New features

  • dns: update DNS to support multiple namservers.

    • This allows cookbooks to configure the Dns with multiple nameservers, for example:

      dns = Dns(nameserver_addresses=['', ''])

      and thus allow users to get authoritative answers whiles also making use of DNS failover to account for any on going work on a specific nameserver while the cookbook is running.

      The PUBLIC_AUTHDNS constant holds the auth server ips, given that they change very infrequently.

  • fileio: add new module to manage file I/O operations.

    • Add a locked_open() context manager to open a file with an exclusive lock to be used like the buil-in open().


  • tests: cover untested property in the irc module.

  • CHANGELOG: fix typo.

  • tests: pylint, remove unnecessary disable comments.

v0.0.6 (2021-01-04)


  • doc: improve installation and introduction documentation pages and some modules documentation.

  • type hints: mark the package as type hinted so that mypy can recognize its type hints when imported in other projects.

v0.0.5 (2020-12-21)

New features

  • Port the decorators module from Spicerack (T257905).

  • Port the interactive module from Spicerack (T257905).

  • Port the prometheus module from Spicerack (T257905).

  • Port the IRC logger handler from Spickerack into an irc module (T257905).

  • interactive: improve confirmation capabilities

    • Add a ask_input() generic function to ask the user for input and check that the answer is among a list of allowed choices, returning the user’s choice.

    • Convert ask_confirmation() to use the ask_input() function.

    • Add an InputError and AbortError exception classes.

    • Add a confirm_on_failure() function to run any callable, and on failure ask the user to either retry, skip the step or abort the whole execution.


  • docs: fix link to pywmflib Gerrit project.

  • tests: fix deprecated pytest argument.

v0.0.4 (2020-11-02)

New features

  • requests: add new requests module that exposes an http_session() function that instantiate a requests’s Session with configurable default timeout, retry logic on some failures as well as setting a well formatted User-Agent.

v0.0.3 (2020-10-23)

New features

  • Import the action module from Spicerack

  • Import the config module from Spicerack

  • Import the phabricator module from Spicerack

v0.0.2 (2020-09-22)


  • Remove Spicerack references from docstrings.

v0.0.1 (2020-07-27)

New features

  • Initial version of the package.

  • Import the dns module and tests from Spicerack.