view hgext/hooklib/enforce_draft_commits.py @ 47221:5eb5b866e517

requirements: no longer drop `generaldelta` requirement with revlogv2

A repository could use a mix of revlogv1 and revlogv2, making the requirements
still necessary. Overall we should move away from the "requirements" file being
used a way to configure the repository and stick to it "what do you need to
access this repository". However this is a wider work for another time.

In addition the logic we just dropped was confusing the `hg debugformat`
command, breaking the upgrade code and inconsistent (eg: `sparse-revlog` is also
implied by `revlogv2`).

Finally, multiple other config option would imply the use of the `revlogv2`
requirements, without drop the `generaldelta` one, leading to more
inconsistency.

Differential Revision: https://phab.mercurial-scm.org/D10612

# Copyright 2020 Joerg Sonnenberger <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

"""enforce_draft_commits us a hook to ensure that all new changesets are
in the draft phase. This allows enforcing policies for work-in-progress
changes in overlay repositories, i.e. a shared hidden repositories with
different views for work-in-progress code and public history.

Usage:
  [hooks]
  pretxnclose-phase.enforce_draft_commits = \
    python:hgext.hooklib.enforce_draft_commits.hook
"""

from __future__ import absolute_import

from mercurial.i18n import _
from mercurial import (
    error,
    pycompat,
)


def hook(ui, repo, hooktype, node=None, **kwargs):
    if hooktype != b"pretxnclose-phase":
        raise error.Abort(
            _(b'Unsupported hook type %r') % pycompat.bytestr(hooktype)
        )
    ctx = repo.unfiltered()[node]
    if kwargs['oldphase']:
        raise error.Abort(
            _(b'Phase change from %r to %r for %s rejected')
            % (
                pycompat.bytestr(kwargs['oldphase']),
                pycompat.bytestr(kwargs['phase']),
                ctx,
            )
        )
    elif kwargs['phase'] != b'draft':
        raise error.Abort(
            _(b'New changeset %s in phase %r rejected')
            % (ctx, pycompat.bytestr(kwargs['phase']))
        )