mercurial: replace ancestor to pure python version for hg 4.1 compatability problems.

this was moved now to debugcommands, but we don't need to run it via commands
as the code is very simple.

vcsserver/hg.py

@@ -1,725 +1,723 b''
 # RhodeCode VCSServer provides access to different vcs backends via network.
 # Copyright (C) 2014-2017 RodeCode GmbH
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software Foundation,
 # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 
 import io
 import logging
 import stat
 import sys
 import urllib
 import urllib2
 
 from hgext import largefiles, rebase
 from hgext.strip import strip as hgext_strip
 from mercurial import commands
 from mercurial import unionrepo
 
 from vcsserver import exceptions
 from vcsserver.base import RepoFactory, obfuscate_qs
 from vcsserver.hgcompat import (
     archival, bin, clone, config as hgconfig, diffopts, hex,
     hg_url as url_parser, httpbasicauthhandler, httpdigestauthhandler,
     httppeer, localrepository, match, memctx, exchange, memfilectx, nullrev,
     patch, peer, revrange, ui, Abort, LookupError, RepoError, RepoLookupError,
     InterventionRequired, RequirementError)
 
 log = logging.getLogger(__name__)
 
 
 def make_ui_from_config(repo_config):
     baseui = ui.ui()
 
     # clean the baseui object
     baseui._ocfg = hgconfig.config()
     baseui._ucfg = hgconfig.config()
     baseui._tcfg = hgconfig.config()
 
     for section, option, value in repo_config:
         baseui.setconfig(section, option, value)
 
     # make our hgweb quiet so it doesn't print output
     baseui.setconfig('ui', 'quiet', 'true')
 
     # force mercurial to only use 1 thread, otherwise it may try to set a
     # signal in a non-main thread, thus generating a ValueError.
     baseui.setconfig('worker', 'numcpus', 1)
 
     # If there is no config for the largefiles extension, we explicitly disable
     # it here. This overrides settings from repositories hgrc file. Recent
     # mercurial versions enable largefiles in hgrc on clone from largefile
     # repo.
     if not baseui.hasconfig('extensions', 'largefiles'):
         log.debug('Explicitly disable largefiles extension for repo.')
         baseui.setconfig('extensions', 'largefiles', '!')
 
     return baseui
 
 
 def reraise_safe_exceptions(func):
     """Decorator for converting mercurial exceptions to something neutral."""
     def wrapper(*args, **kwargs):
         try:
             return func(*args, **kwargs)
         except (Abort, InterventionRequired):
             raise_from_original(exceptions.AbortException)
         except RepoLookupError:
             raise_from_original(exceptions.LookupException)
         except RequirementError:
             raise_from_original(exceptions.RequirementException)
         except RepoError:
             raise_from_original(exceptions.VcsException)
         except LookupError:
             raise_from_original(exceptions.LookupException)
         except Exception as e:
             if not hasattr(e, '_vcs_kind'):
                 log.exception("Unhandled exception in hg remote call")
                 raise_from_original(exceptions.UnhandledException)
             raise
     return wrapper
 
 
 def raise_from_original(new_type):
     """
     Raise a new exception type with original args and traceback.
     """
     _, original, traceback = sys.exc_info()
     try:
         raise new_type(*original.args), None, traceback
     finally:
         del traceback
 
 
 class MercurialFactory(RepoFactory):
 
     def _create_config(self, config, hooks=True):
         if not hooks:
             hooks_to_clean = frozenset((
                 'changegroup.repo_size', 'preoutgoing.pre_pull',
                 'outgoing.pull_logger', 'prechangegroup.pre_push'))
             new_config = []
             for section, option, value in config:
                 if section == 'hooks' and option in hooks_to_clean:
                     continue
                 new_config.append((section, option, value))
             config = new_config
 
         baseui = make_ui_from_config(config)
         return baseui
 
     def _create_repo(self, wire, create):
         baseui = self._create_config(wire["config"])
         return localrepository(baseui, wire["path"], create)
 
 
 class HgRemote(object):
 
     def __init__(self, factory):
         self._factory = factory
 
         self._bulk_methods = {
             "affected_files": self.ctx_files,
             "author": self.ctx_user,
             "branch": self.ctx_branch,
             "children": self.ctx_children,
             "date": self.ctx_date,
             "message": self.ctx_description,
             "parents": self.ctx_parents,
             "status": self.ctx_status,
             "_file_paths": self.ctx_list,
         }
 
     @reraise_safe_exceptions
     def discover_hg_version(self):
         from mercurial import util
         return util.version()
 
     @reraise_safe_exceptions
     def archive_repo(self, archive_path, mtime, file_info, kind):
         if kind == "tgz":
             archiver = archival.tarit(archive_path, mtime, "gz")
         elif kind == "tbz2":
             archiver = archival.tarit(archive_path, mtime, "bz2")
         elif kind == 'zip':
             archiver = archival.zipit(archive_path, mtime)
         else:
             raise exceptions.ArchiveException(
                 'Remote does not support: "%s".' % kind)
 
         for f_path, f_mode, f_is_link, f_content in file_info:
             archiver.addfile(f_path, f_mode, f_is_link, f_content)
         archiver.done()
 
     @reraise_safe_exceptions
     def bookmarks(self, wire):
         repo = self._factory.repo(wire)
         return dict(repo._bookmarks)
 
     @reraise_safe_exceptions
     def branches(self, wire, normal, closed):
         repo = self._factory.repo(wire)
         iter_branches = repo.branchmap().iterbranches()
         bt = {}
         for branch_name, _heads, tip, is_closed in iter_branches:
             if normal and not is_closed:
                 bt[branch_name] = tip
             if closed and is_closed:
                 bt[branch_name] = tip
 
         return bt
 
     @reraise_safe_exceptions
     def bulk_request(self, wire, rev, pre_load):
         result = {}
         for attr in pre_load:
             try:
                 method = self._bulk_methods[attr]
                 result[attr] = method(wire, rev)
             except KeyError:
                 raise exceptions.VcsException(
                     'Unknown bulk attribute: "%s"' % attr)
         return result
 
     @reraise_safe_exceptions
     def clone(self, wire, source, dest, update_after_clone=False, hooks=True):
         baseui = self._factory._create_config(wire["config"], hooks=hooks)
         clone(baseui, source, dest, noupdate=not update_after_clone)
 
     @reraise_safe_exceptions
     def commitctx(
             self, wire, message, parents, commit_time, commit_timezone,
             user, files, extra, removed, updated):
 
         def _filectxfn(_repo, memctx, path):
             """
             Marks given path as added/changed/removed in a given _repo. This is
             for internal mercurial commit function.
             """
 
             # check if this path is removed
             if path in removed:
                 # returning None is a way to mark node for removal
                 return None
 
             # check if this path is added
             for node in updated:
                 if node['path'] == path:
                     return memfilectx(
                         _repo,
                         path=node['path'],
                         data=node['content'],
                         islink=False,
                         isexec=bool(node['mode'] & stat.S_IXUSR),
                         copied=False,
                         memctx=memctx)
 
             raise exceptions.AbortException(
                 "Given path haven't been marked as added, "
                 "changed or removed (%s)" % path)
 
         repo = self._factory.repo(wire)
 
         commit_ctx = memctx(
             repo=repo,
             parents=parents,
             text=message,
             files=files,
             filectxfn=_filectxfn,
             user=user,
             date=(commit_time, commit_timezone),
             extra=extra)
 
         n = repo.commitctx(commit_ctx)
         new_id = hex(n)
 
         return new_id
 
     @reraise_safe_exceptions
     def ctx_branch(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         return ctx.branch()
 
     @reraise_safe_exceptions
     def ctx_children(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         return [child.rev() for child in ctx.children()]
 
     @reraise_safe_exceptions
     def ctx_date(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         return ctx.date()
 
     @reraise_safe_exceptions
     def ctx_description(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         return ctx.description()
 
     @reraise_safe_exceptions
     def ctx_diff(
             self, wire, revision, git=True, ignore_whitespace=True, context=3):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         result = ctx.diff(
             git=git, ignore_whitespace=ignore_whitespace, context=context)
         return list(result)
 
     @reraise_safe_exceptions
     def ctx_files(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         return ctx.files()
 
     @reraise_safe_exceptions
     def ctx_list(self, path, revision):
         repo = self._factory.repo(path)
         ctx = repo[revision]
         return list(ctx)
 
     @reraise_safe_exceptions
     def ctx_parents(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         return [parent.rev() for parent in ctx.parents()]
 
     @reraise_safe_exceptions
     def ctx_substate(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         return ctx.substate
 
     @reraise_safe_exceptions
     def ctx_status(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         status = repo[ctx.p1().node()].status(other=ctx.node())
         # object of status (odd, custom named tuple in mercurial) is not
         # correctly serializable via Pyro, we make it a list, as the underling
         # API expects this to be a list
         return list(status)
 
     @reraise_safe_exceptions
     def ctx_user(self, wire, revision):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         return ctx.user()
 
     @reraise_safe_exceptions
     def check_url(self, url, config):
         _proto = None
         if '+' in url[:url.find('://')]:
             _proto = url[0:url.find('+')]
             url = url[url.find('+') + 1:]
         handlers = []
         url_obj = url_parser(url)
         test_uri, authinfo = url_obj.authinfo()
         url_obj.passwd = '*****' if url_obj.passwd else url_obj.passwd
         url_obj.query = obfuscate_qs(url_obj.query)
 
         cleaned_uri = str(url_obj)
         log.info("Checking URL for remote cloning/import: %s", cleaned_uri)
 
         if authinfo:
             # create a password manager
             passmgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
             passmgr.add_password(*authinfo)
 
             handlers.extend((httpbasicauthhandler(passmgr),
                              httpdigestauthhandler(passmgr)))
 
         o = urllib2.build_opener(*handlers)
         o.addheaders = [('Content-Type', 'application/mercurial-0.1'),
                         ('Accept', 'application/mercurial-0.1')]
 
         q = {"cmd": 'between'}
         q.update({'pairs': "%s-%s" % ('0' * 40, '0' * 40)})
         qs = '?%s' % urllib.urlencode(q)
         cu = "%s%s" % (test_uri, qs)
         req = urllib2.Request(cu, None, {})
 
         try:
             log.debug("Trying to open URL %s", cleaned_uri)
             resp = o.open(req)
             if resp.code != 200:
                 raise exceptions.URLError('Return Code is not 200')
         except Exception as e:
             log.warning("URL cannot be opened: %s", cleaned_uri, exc_info=True)
             # means it cannot be cloned
             raise exceptions.URLError("[%s] org_exc: %s" % (cleaned_uri, e))
 
         # now check if it's a proper hg repo, but don't do it for svn
         try:
             if _proto == 'svn':
                 pass
             else:
                 # check for pure hg repos
                 log.debug(
                     "Verifying if URL is a Mercurial repository: %s",
                     cleaned_uri)
                 httppeer(make_ui_from_config(config), url).lookup('tip')
         except Exception as e:
             log.warning("URL is not a valid Mercurial repository: %s",
                         cleaned_uri)
             raise exceptions.URLError(
                 "url [%s] does not look like an hg repo org_exc: %s"
                 % (cleaned_uri, e))
 
         log.info("URL is a valid Mercurial repository: %s", cleaned_uri)
         return True
 
     @reraise_safe_exceptions
     def diff(
             self, wire, rev1, rev2, file_filter, opt_git, opt_ignorews,
             context):
         repo = self._factory.repo(wire)
 
         if file_filter:
             match_filter = match(file_filter[0], '', [file_filter[1]])
         else:
             match_filter = file_filter
         opts = diffopts(git=opt_git, ignorews=opt_ignorews, context=context)
 
         try:
             return "".join(patch.diff(
                 repo, node1=rev1, node2=rev2, match=match_filter, opts=opts))
         except RepoLookupError:
             raise exceptions.LookupException()
 
     @reraise_safe_exceptions
     def file_history(self, wire, revision, path, limit):
         repo = self._factory.repo(wire)
 
         ctx = repo[revision]
         fctx = ctx.filectx(path)
 
         def history_iter():
             limit_rev = fctx.rev()
             for obj in reversed(list(fctx.filelog())):
                 obj = fctx.filectx(obj)
                 if limit_rev >= obj.rev():
                     yield obj
 
         history = []
         for cnt, obj in enumerate(history_iter()):
             if limit and cnt >= limit:
                 break
             history.append(hex(obj.node()))
 
         return [x for x in history]
 
     @reraise_safe_exceptions
     def file_history_untill(self, wire, revision, path, limit):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         fctx = ctx.filectx(path)
 
         file_log = list(fctx.filelog())
         if limit:
             # Limit to the last n items
             file_log = file_log[-limit:]
 
         return [hex(fctx.filectx(cs).node()) for cs in reversed(file_log)]
 
     @reraise_safe_exceptions
     def fctx_annotate(self, wire, revision, path):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         fctx = ctx.filectx(path)
 
         result = []
         for i, annotate_data in enumerate(fctx.annotate()):
             ln_no = i + 1
             node_info, content = annotate_data
             sha = hex(node_info[0].node())
             result.append((ln_no, sha, content))
         return result
 
     @reraise_safe_exceptions
     def fctx_data(self, wire, revision, path):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         fctx = ctx.filectx(path)
         return fctx.data()
 
     @reraise_safe_exceptions
     def fctx_flags(self, wire, revision, path):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         fctx = ctx.filectx(path)
         return fctx.flags()
 
     @reraise_safe_exceptions
     def fctx_size(self, wire, revision, path):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         fctx = ctx.filectx(path)
         return fctx.size()
 
     @reraise_safe_exceptions
     def get_all_commit_ids(self, wire, name):
         repo = self._factory.repo(wire)
         revs = repo.filtered(name).changelog.index
         return map(lambda x: hex(x[7]), revs)[:-1]
 
     @reraise_safe_exceptions
     def get_config_value(self, wire, section, name, untrusted=False):
         repo = self._factory.repo(wire)
         return repo.ui.config(section, name, untrusted=untrusted)
 
     @reraise_safe_exceptions
     def get_config_bool(self, wire, section, name, untrusted=False):
         repo = self._factory.repo(wire)
         return repo.ui.configbool(section, name, untrusted=untrusted)
 
     @reraise_safe_exceptions
     def get_config_list(self, wire, section, name, untrusted=False):
         repo = self._factory.repo(wire)
         return repo.ui.configlist(section, name, untrusted=untrusted)
 
     @reraise_safe_exceptions
     def is_large_file(self, wire, path):
         return largefiles.lfutil.isstandin(path)
 
     @reraise_safe_exceptions
     def in_store(self, wire, sha):
         repo = self._factory.repo(wire)
         return largefiles.lfutil.instore(repo, sha)
 
     @reraise_safe_exceptions
     def in_user_cache(self, wire, sha):
         repo = self._factory.repo(wire)
         return largefiles.lfutil.inusercache(repo.ui, sha)
 
     @reraise_safe_exceptions
     def store_path(self, wire, sha):
         repo = self._factory.repo(wire)
         return largefiles.lfutil.storepath(repo, sha)
 
     @reraise_safe_exceptions
     def link(self, wire, sha, path):
         repo = self._factory.repo(wire)
         largefiles.lfutil.link(
             largefiles.lfutil.usercachepath(repo.ui, sha), path)
 
     @reraise_safe_exceptions
     def localrepository(self, wire, create=False):
         self._factory.repo(wire, create=create)
 
     @reraise_safe_exceptions
     def lookup(self, wire, revision, both):
         # TODO Paris: Ugly hack to "deserialize" long for msgpack
         if isinstance(revision, float):
             revision = long(revision)
         repo = self._factory.repo(wire)
         try:
             ctx = repo[revision]
         except RepoLookupError:
             raise exceptions.LookupException(revision)
         except LookupError as e:
             raise exceptions.LookupException(e.name)
 
         if not both:
             return ctx.hex()
 
         ctx = repo[ctx.hex()]
         return ctx.hex(), ctx.rev()
 
     @reraise_safe_exceptions
     def pull(self, wire, url, commit_ids=None):
         repo = self._factory.repo(wire)
         remote = peer(repo, {}, url)
         if commit_ids:
             commit_ids = [bin(commit_id) for commit_id in commit_ids]
 
         return exchange.pull(
             repo, remote, heads=commit_ids, force=None).cgresult
 
     @reraise_safe_exceptions
     def revision(self, wire, rev):
         repo = self._factory.repo(wire)
         ctx = repo[rev]
         return ctx.rev()
 
     @reraise_safe_exceptions
     def rev_range(self, wire, filter):
         repo = self._factory.repo(wire)
         revisions = [rev for rev in revrange(repo, filter)]
         return revisions
 
     @reraise_safe_exceptions
     def rev_range_hash(self, wire, node):
         repo = self._factory.repo(wire)
 
         def get_revs(repo, rev_opt):
             if rev_opt:
                 revs = revrange(repo, rev_opt)
                 if len(revs) == 0:
                     return (nullrev, nullrev)
                 return max(revs), min(revs)
             else:
                 return len(repo) - 1, 0
 
         stop, start = get_revs(repo, [node + ':'])
         revs = [hex(repo[r].node()) for r in xrange(start, stop + 1)]
         return revs
 
     @reraise_safe_exceptions
     def revs_from_revspec(self, wire, rev_spec, *args, **kwargs):
         other_path = kwargs.pop('other_path', None)
 
         # case when we want to compare two independent repositories
         if other_path and other_path != wire["path"]:
             baseui = self._factory._create_config(wire["config"])
             repo = unionrepo.unionrepository(baseui, other_path, wire["path"])
         else:
             repo = self._factory.repo(wire)
         return list(repo.revs(rev_spec, *args))
 
     @reraise_safe_exceptions
     def strip(self, wire, revision, update, backup):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         hgext_strip(
             repo.baseui, repo, ctx.node(), update=update, backup=backup)
 
     @reraise_safe_exceptions
     def tag(self, wire, name, revision, message, local, user,
             tag_time, tag_timezone):
         repo = self._factory.repo(wire)
         ctx = repo[revision]
         node = ctx.node()
 
         date = (tag_time, tag_timezone)
         try:
             repo.tag(name, node, message, local, user, date)
         except Abort as e:
             log.exception("Tag operation aborted")
             # Exception can contain unicode which we convert
             raise exceptions.AbortException(repr(e))
 
     @reraise_safe_exceptions
     def tags(self, wire):
         repo = self._factory.repo(wire)
         return repo.tags()
 
     @reraise_safe_exceptions
     def update(self, wire, node=None, clean=False):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'])
         commands.update(baseui, repo, node=node, clean=clean)
 
     @reraise_safe_exceptions
     def identify(self, wire):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'])
         output = io.BytesIO()
         baseui.write = output.write
         # This is required to get a full node id
         baseui.debugflag = True
         commands.identify(baseui, repo, id=True)
 
         return output.getvalue()
 
     @reraise_safe_exceptions
     def pull_cmd(self, wire, source, bookmark=None, branch=None, revision=None,
                  hooks=True):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'], hooks=hooks)
 
         # Mercurial internally has a lot of logic that checks ONLY if
         # option is defined, we just pass those if they are defined then
         opts = {}
         if bookmark:
             opts['bookmark'] = bookmark
         if branch:
             opts['branch'] = branch
         if revision:
             opts['rev'] = revision
 
         commands.pull(baseui, repo, source, **opts)
 
     @reraise_safe_exceptions
     def heads(self, wire, branch=None):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'])
         output = io.BytesIO()
 
         def write(data, **unused_kwargs):
             output.write(data)
 
         baseui.write = write
         if branch:
             args = [branch]
         else:
             args = []
         commands.heads(baseui, repo, template='{node} ', *args)
 
         return output.getvalue()
 
     @reraise_safe_exceptions
     def ancestor(self, wire, revision1, revision2):
         repo = self._factory.repo(wire)
-        baseui = self._factory._create_config(wire['config'])
-        output = io.BytesIO()
-        baseui.write = output.write
-        commands.debugancestor(baseui, repo, revision1, revision2)
-
-        return output.getvalue()
+        changelog = repo.changelog
+        lookup = repo.lookup
+        a = changelog.ancestor(lookup(revision1), lookup(revision2))
+        return hex(a)
 
     @reraise_safe_exceptions
     def push(self, wire, revisions, dest_path, hooks=True,
              push_branches=False):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'], hooks=hooks)
         commands.push(baseui, repo, dest=dest_path, rev=revisions,
                       new_branch=push_branches)
 
     @reraise_safe_exceptions
     def merge(self, wire, revision):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'])
         repo.ui.setconfig('ui', 'merge', 'internal:dump')
 
         # In case of sub repositories are used mercurial prompts the user in
         # case of merge conflicts or different sub repository sources. By
         # setting the interactive flag to `False` mercurial doesn't prompt the
         # used but instead uses a default value.
         repo.ui.setconfig('ui', 'interactive', False)
 
         commands.merge(baseui, repo, rev=revision)
 
     @reraise_safe_exceptions
     def commit(self, wire, message, username):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'])
         repo.ui.setconfig('ui', 'username', username)
         commands.commit(baseui, repo, message=message)
 
     @reraise_safe_exceptions
     def rebase(self, wire, source=None, dest=None, abort=False):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'])
         repo.ui.setconfig('ui', 'merge', 'internal:dump')
         rebase.rebase(
             baseui, repo, base=source, dest=dest, abort=abort, keep=not abort)
 
     @reraise_safe_exceptions
     def bookmark(self, wire, bookmark, revision=None):
         repo = self._factory.repo(wire)
         baseui = self._factory._create_config(wire['config'])
         commands.bookmark(baseui, repo, bookmark, rev=revision, force=True)