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Phabricator CLI from Mozilla to support submission of a series of commits.

Installation

moz-phab can be installed with pip3 install MozPhab.

For detailed installation instructions please see:

moz-phab will periodically check for updates and seamlessly install the latest release when available. To force update moz-phab, run moz-phab self-update.

Changelog

https://wiki.mozilla.org/MozPhab#Changelog

Configuration

moz-phab has an INI style configuration file to control defaults: ~/.moz-phab-config

This file will be created if it doesn't exist.

[ui]
no_ansi = False

[vcs]
safe_mode = False

[git]
remote =
command_path =

[hg]
command_path =

[submit]
auto_submit = False
always_blocking = False
warn_untracked = True

[patch]
apply_to = base
create_bookmark = True
always_full_stack = False

[updater]
self_last_check = 0
arc_last_check = 0
self_auto_update = True

[error_reporting]
report_to_sentry = True
  • ui.no_ansi : never use ANSI colours (default: auto-detected).
  • vcs.safe_mode : use only safe VCS settings (default: false). Use --safe-mode option to switch it on for a one-time usage.
  • git.remote: comma separated string. Default remotes used to find the first unpublished commit. Default, empty string, means that a list of remotes will be read from git remote command.
  • git.command_path: command path to Git binary.
  • hg.command_path: command path to Mercurial binary.
  • submit.auto_submit : when true the confirmation prompt will be skipped (default: false).
  • submit.always_blocking : when true reviewers in commit descriptions will be marked as blocking. reviewers specified on the command line override this setting (default: false).
  • submit.warn_untracked : when true show a warning if there are uncommitted or untracked changes in the working directory (default: true)
  • patch.apply_to : [base/here] Where to apply the patches by default. If "base" moz-phab will look for the SHA1 in the first commit. If "here" - current commit/checkout will be used (default: base).
  • patch.create_bookmark : affects only when patching a Mercurial repository. If True moz-phab will create a bookmark (based on the last revision number) for the new DAG branch point.
  • patch.always_full_stack : when False and the patched revision has successors, moz-phab will ask if the whole stack should be patched instead. If True moz-phab will do it without without asking.
  • updater.self_last_check : epoch timestamp (local timezone) indicating the last time an update check was performed for this script. set to -1 to disable this check.
  • updater.arc_last_check : epoch timestamp (local timezone) indicating the last time an update was performed for arc. set to -1 to disable this check.
  • self_auto_update : when True moz-phab will auto-update if a new version is available. If False moz-phab will only warn about the new version.
  • error_reporting.report_to_sentry : when True moz-phab will submit exceptions to Sentry so moz-phab devs can see unreported errors.

moz-phab can also be configured via the following environmental variables:

  • DEBUG : enabled debugging output (default: disabled)

Execution

To get information about all available commands run

  $ moz-phab -h

All commands involving VCS (like submit and patch) might be used with a --safe-mode switch. It will run the VCS command with only chosen set of extensions.

Submitting commits to Phabricator

The simplest invocation is

  $ moz-phab [start_rev] [end_rev]

If no positional arguments (start_rev/end_rev) are given, the range of commits is automatically determined, starting with the first non-public, non-obsolete changeset (for Mercurial) or first unpublished commit (for Git) and ending with the currently checked-out changeset. If at least one argument is given moz-phab is following the underlying VCS's log behavior. The first argument is interpreted differently in Mercurial (as inclusive) and Git (exclusive). If only one argument is given the end of range is again interpreted as the currently checked-out changeset. If both arguments are given - the second one is interpreted as inclusive.

Bug IDs and reviewers are parsed out of commit messages by default. You can set a reviewer as blocking by appending an exclamation mark to the reviewer's nick, e.g. r=foo!. If submit.always_blocking is set to true (see above), reviewers will always be set to blocking regardless.

A bug ID can also be set for every revision in the series with the --bug option, which overrides any bug IDs in commit messages. Similarly, reviewers can be set for every revision in the series with --reviewer (regular reviewers) and/or --blocker (blocking reviewers), which again overrides any reviewers in commit messages.

Run moz-phab submit -h for more options for submitting revisions.

To submit updates to a commit series, run moz-phab in the same way with the same arguments, that is, specifying the full original range of commits. Note that, while inserting and amending commits should work fine, reordering commits is not yet supported, and deleting commits will leave the associated revisions open, which should be abandoned manually. See bug 1481539 for planned fixes. Also note that "fix-up" commits are not yet supported; see bug 1481542.

MozPhab is not using Arcanist to submit commits to Phabricator. If you wish to do so add the --arc switch. File a bug if you needed to use it because MozPhab failed to submit with default settings.

Downloading a patch from Phabricator

moz-phab patch allows patching an entire stack of revisions. The simplest invocation is

  $ moz-phab patch revision_id

To patch a stack ending with the revision D123 run moz-phab patch D123. Diffs will be downloaded from Phabricator and applied using the underlying VCS (import for Mercurial or apply for Git). A commit for each revision will be created in a new bookmark (Mercurial) or branch (Git).

This behavior can be modified with few options:

  • --apply-to TARGET Define the commit to which apply the patch:

    • base (default) find the base commit in the first ancestor of the revision,
    • here use the current commit,
    • {NODE} use a commit identified by SHA1 or (in Mecurial) revision number
  • --raw Print out the diffs of each revision starting from the oldest ancestor instead of applying to the repository. It can be used to patch the working directory with an external tool: $ moz-phab patch D123 --raw | patch -p1. $ moz-phab patch D123 --raw | hg import. $ moz-phab patch D123 --raw | git am.

  • --no-commit Use the git apply command (also for Mercurial repos) to patch the diffs. No commit or branch is created.

  • --no-bookmark : used only when patching a Mercurial repository. If not provided - moz-phab will create a bookmark (based on the last revision number) for the new DAG branch point. The default behavior is configurable.

  • --no-branch: used only when patching a Git repository. If not provided - moz-phab will create a branch (based on the revision number). Otherwise commits will be added just on top of the base commit which might result in switching the repository to the 'detached HEAD' state.

  • --skip-dependencies : patch only one revision, ignore dependencies.

Reorganizing the stack

moz-phab reorg [start_rev] [end_rev] allows you to reorganize the stack in Phabricator.

If you've changed the local stack by adding, removing or moving the commits around, you need to change the parent/child relation of the revisions in Phabricator.

moz-phab reorg command will compare the stack, display what will be changed and ask for permission before taking any action.

Associating a commit to an existing phabricator revision

moz-phab tracks which revision is associated with a commit using a line in the commit message. If you want to work on an existing revision from a different machine or environment, we recommend you apply the existing revision from Phabricator using moz-phab patch.

If that isn't an option for whatever reason, you can associate a new commit to the same revision by adding a line similar to the following to the extended commit message:

Differential Revision: https://phabricator.services.mozilla.com/D[revision]

replacing [revision] with the identifier of your revision.

Running arc commands

  • Note You will need to have PHP installed to run arc commands. *

moz-phab arc allows running Arcanist commands indirectly:

$ moz-phab arc ARG [ARG ...]

arc feature will become moz-phab arc feature.

Reporting Issues

We use Bugzilla to track development.

File bugs in Bugzilla under Conduit :: moz-phab.

Development

All python code must be formatted with black using the default settings.

MacOS / Linux

  1. Ensure you have Python 3, Git, and Mercurial installed
    • eg. using homebrew on macOS, or your Linux distribution's package manager
    • python3, git, and hg executables must be on the system path
  2. In your clone of this repository run the following commands (adjusting to the version of Python):
    • python3 -m venv venv
    • venv/bin/pip3 install -r dev/requirements/python3.9.txt
    • venv/bin/pip3 install -e .
  3. To run moz-phab after making modifications use venv/bin/moz-phab-dev
  4. To run tests use venv/bin/pytest -vv

Windows

  1. Install Python 3, Git, and Mercurial:
    • Run python3 from the command prompt and install from the Windows store.
    • Install Git and Mercurial with their respective installers from the official websites.
    • python3, git, and hg executables must be on the system path
  2. In your clone of this repository run the following commands:
    • python3 -m venv venv
    • venv\Scripts\pip3 install -r dev-requirements.txt
    • venv\Scripts\pip3 install -e .
  3. To run moz-phab after making modifications use venv\Scripts\moz-phab-dev
  4. To run tests use venv\Scripts\pytest -vv

Regenerating requirements files

Requirements files (those found in the dev/requirements directory) are automatically generated using pip-tools. These requirement files are used in the CircleCI configuration to install requirements that run remotely on CircleCI. You can use Docker to regenerate these files.

On Linux

To generate dev/requirements/python*.*.txt, run the following commands while in the dev directory:

  • docker-compose run generate-python3.6-requirements
  • docker-compose run generate-python3.7-requirements
  • docker-compose run generate-python3.8-requirements
  • docker-compose run generate-python3.9-requirements

On Windows

To generate dev/requirements/windows.txt, make sure you are not running Docker in WSL mode then run the following command:

  • docker-compose run generate-windows-requirements

Circle CI

mozphab uses Circle CI to ensure all tests pass on macOS, Linux, and Windows.

To ensure that your changes work, run circleci locally.

  1. Ensure you have the circleci client installed, see https://circleci.com/docs/2.0/local-cli/
  2. In your clone of this repository, run: circleci local execute --job test_3_8

This will run all the Python 3.8 tests in a dockerized environment. This step takes a while, so you might want to run pytest for working on your changes, as explained above.

Circle CI on Windows

As of the time of writing, circleci-cli on Windows does not allow you to execute Windows tests locally. When CircleCI is running your windows tests remotely, it will use a Windows Orb that is configured to use a special Windows executor that is preloaded with various development packages. The Windows virtual machine will use Miniconda to bootstrap the Python environment, which can cause some problems when installing additional requirements. The generate-windows container that is used to generate requirements files for Windows can be used to run your tests, as well as to test package installation. To do that, run the following commands:

  • docker-compose run generate-windows powershell.exe
  • cd C:\review
  • pip install dev\requirements\windows.txt
  • pytest

Submitting patches

Pull Requests are not accepted here; please submit changes to Phabricator using moz-phab.

  1. Follow the setup
  2. Once your patch is written and committed locally, run moz-phab to send it to Phabricator

Local environment

By using suite, you can run a local environment with its own instances of Phabricator, BMO, Hg, and other services.

This enables more thorough integration testing of moz-phab without affecting production data.

You can order the suite to use your local code by calling:

$ docker-compose -f docker-compose.yml -f docker-compose.review.yml run local-dev

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