view hgext3rd/topic/flow.py @ 4647:228caeb8b7af

topic: add a simple option to reject publishing

The option is pretty basic but it can be used as base to build larger feature.
The main target for going in this direction is to be able to distinct between
user that are "simple contributors" pushing topic for review and the
"maintainers" or "automation" that can publish changesets.

from __future__ import absolute_import

from mercurial import (
    commands,
    error,
    exchange,
    extensions,
    node,
    phases,
)

from mercurial.i18n import _

def enforcesinglehead(repo, tr):
    for name, heads in repo.filtered('visible').branchmap().iteritems():
        if len(heads) > 1:
            hexs = [node.short(n) for n in heads]
            raise error.Abort(_('%d heads on "%s"') % (len(heads), name),
                              hint=(', '.join(hexs)))

def publishbarebranch(repo, tr):
    """Publish changeset without topic"""
    if 'node' not in tr.hookargs: # no new node
        return
    startnode = node.bin(tr.hookargs['node'])
    topublish = repo.revs('not public() and (%n:) - hidden() - topic()', startnode)
    if topublish:
        cl = repo.changelog
        nodes = [cl.node(r) for r in topublish]
        repo._phasecache.advanceboundary(repo, tr, phases.public, nodes)

def rejectuntopicedchangeset(repo, tr):
    """Reject the push if there are changeset without topic"""
    if 'node' not in tr.hookargs: # no new revs
        return

    startnode = node.bin(tr.hookargs['node'])

    mode = repo.ui.config('experimental', 'topic-mode.server', 'ignore')

    untopiced = repo.revs('not public() and (%n:) - hidden() - topic()', startnode)
    if untopiced:
        num = len(untopiced)
        fnode = repo[untopiced.first()].hex()[:10]
        if num == 1:
            msg = _("%s") % fnode
        else:
            msg = _("%s and %d more") % (fnode, num - 1)
        if mode == 'warning':
            fullmsg = _("pushed draft changeset without topic: %s\n")
            repo.ui.warn(fullmsg % msg)
        elif mode == 'enforce':
            fullmsg = _("rejecting draft changesets: %s")
            raise error.Abort(fullmsg % msg)
        else:
            repo.ui.warn(_("unknown 'topic-mode.server': %s\n" % mode))

def reject_publish(repo, tr):
    """prevent a transaction to be publish anything"""
    published = set()
    for r, (o, n) in tr.changes['phases'].items():
        if n == phases.public:
            published.add(r)
    if published:
        r = min(published)
        msg = "rejecting publishing of changeset %s" % repo[r]
        if len(published) > 1:
            msg += ' and %d others' % (len(published) - 1)
        raise error.Abort(msg)

def wrappush(orig, repo, remote, *args, **kwargs):
    """interpret the --publish flag and pass it to the push operation"""
    newargs = kwargs.copy()
    if kwargs.pop('publish', False):
        opargs = kwargs.get('opargs')
        if opargs is None:
            opargs = {}
        newargs['opargs'] = opargs.copy()
        newargs['opargs']['publish'] = True
    return orig(repo, remote, *args, **newargs)

def extendpushoperation(orig, self, *args, **kwargs):
    publish = kwargs.pop('publish', False)
    orig(self, *args, **kwargs)
    self.publish = publish

def wrapphasediscovery(orig, pushop):
    orig(pushop)
    if getattr(pushop, 'publish', False):
        if not pushop.remotephases.publishing:
            unfi = pushop.repo.unfiltered()
            droots = pushop.remotephases.draftroots
            revset = '%ln and (not public() or %ln::)'
            future = list(unfi.set(revset, pushop.futureheads, droots))
            pushop.outdatedphases = future

def installpushflag(ui):
    entry = extensions.wrapcommand(commands.table, 'push', wrappush)
    if not any(opt for opt in entry[1] if opt[1] == 'publish'): # hg <= 4.9
        entry[1].append(('', 'publish', False,
                         _('push the changeset as public')))
    extensions.wrapfunction(exchange.pushoperation, '__init__',
                            extendpushoperation)
    extensions.wrapfunction(exchange, '_pushdiscoveryphase', wrapphasediscovery)
    exchange.pushdiscoverymapping['phase'] = exchange._pushdiscoveryphase