comparison mercurial/debugcommands.py @ 51400:e2dfa403452d

debug: add a debug::unbundle command that simulate the unbundle from a push

The code have different behavior when the unbundle comes from a push, so we
introduce a command that can simulate such unbundle.

For our copy of mozilla-try-2023-03-22, this make the unbundle jump from 2.5
seconds (with `hg unbundle`) to 15 seconds (with `hg debug::unbundle`).

That 15 seconds timings is consistent with the issue seen in production.

51398:e9304c39e075

        ui, repo, run=run, optimize=set(optimize), backup=backup, **opts
    )


@command(
    b'debugwalk', cmdutil.walkopts, _(b'[OPTION]... [FILE]...'), inferrepo=True
)
def debugwalk(ui, repo, *pats, **opts):
    """show how files match on given patterns"""
    m = scmutil.match(repo[None], pats, pycompat.byteskwargs(opts))

51400:e2dfa403452d

        ui, repo, run=run, optimize=set(optimize), backup=backup, **opts
    )


@command(
    b'debug::unbundle',
    [
        (
            b'u',
            b'update',
            None,
            _(b'update to new branch head if changesets were unbundled'),
        )
    ],
    _(b'[-u] FILE...'),
    helpcategory=command.CATEGORY_IMPORT_EXPORT,
)
def debugunbundle(ui, repo, *args, **kwargs):
    """same as `hg unbundle`, but pretent to come from a push

    This is useful to debug behavior and performance change in this case.
    """
    from . import commands  # avoid cycle

    unbundle = cmdutil.findcmd(b'unbundle', commands.table)[1][0]
    return unbundle(ui, repo, *args, _unbundle_source=b'push', **kwargs)


@command(
    b'debugwalk', cmdutil.walkopts, _(b'[OPTION]... [FILE]...'), inferrepo=True
)
def debugwalk(ui, repo, *pats, **opts):
    """show how files match on given patterns"""
    m = scmutil.match(repo[None], pats, pycompat.byteskwargs(opts))