comparison mercurial/upgrade_utils/auto_upgrade.py @ 49195:411d591e0a27

auto-upgrade: introduce a way to auto-upgrade to/from dirstate-v2

This is similar to what we introduced for `share-safe`, but apply to the
tracked-hint feature.

Differential Revision: https://phab.mercurial-scm.org/D12614

49194:e4b31016e194

                engine.upgrade_tracked_hint(ui, repo, op, add=False)

    return action


AUTO_UPGRADE_ACTIONS = [
    get_share_safe_action,
    get_tracked_hint_action,
]

49195:411d591e0a27

                engine.upgrade_tracked_hint(ui, repo, op, add=False)

    return action


def get_dirstate_v2_action(repo):
    """return an automatic-upgrade action for `dirstate-v2` if applicable

    If no action is needed, return None, otherwise return a callback to upgrade
    or downgrade the repository according the configuration and repository
    format.
    """
    ui = repo.ui
    requirements = set(repo.requirements)
    auto_upgrade_tracked_hint = ui.configbool(
        b'format',
        b'use-dirstate-v2.automatic-upgrade-of-mismatching-repositories',
    )

    action = None

    if auto_upgrade_tracked_hint:
        d2_config = ui.configbool(b'format', b'use-dirstate-v2')
        d2_local = requirementsmod.DIRSTATE_V2_REQUIREMENT in requirements
        if d2_config and not d2_local:
            msg = _(
                b"automatically upgrading repository to the `dirstate-v2`"
                b" feature\n"
            )
            hint = (
                b"(see `hg help config.format.use-dirstate-v2` for details)\n"
            )

            def action():
                if not ui.quiet:
                    ui.write_err(msg)
                    ui.write_err(hint)
                requirements.add(requirementsmod.DIRSTATE_V2_REQUIREMENT)
                fake_op = AutoUpgradeOperation(requirements)
                engine.upgrade_dirstate(repo.ui, repo, fake_op, b'v1', b'v2')

        elif d2_local and not d2_config:
            msg = _(
                b"automatically downgrading repository from the `dirstate-v2`"
                b" feature\n"
            )
            hint = (
                b"(see `hg help config.format.use-dirstate-v2` for details)\n"
            )

            def action():
                if not ui.quiet:
                    ui.write_err(msg)
                    ui.write_err(hint)
                requirements.discard(requirementsmod.DIRSTATE_V2_REQUIREMENT)
                fake_op = AutoUpgradeOperation(requirements)
                engine.upgrade_dirstate(repo.ui, repo, fake_op, b'v2', b'v1')

    return action


AUTO_UPGRADE_ACTIONS = [
    get_dirstate_v2_action,
    get_share_safe_action,
    get_tracked_hint_action,
]