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# Copyright (C) 2005-2007 by Jelmer Vernooij
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Conversion of full repositories."""
from itertools import tee
import os
from bzrlib import (
bzrdir,
osutils,
ui,
urlutils,
)
from bzrlib.errors import (
BzrError,
NotBranchError,
NoSuchFile,
NoRepositoryPresent,
)
from bzrlib.repository import InterRepository
from bzrlib.revision import ensure_null
from bzrlib.transport import get_transport
from subvertpy import SubversionException, repos, ERR_STREAM_MALFORMED_DATA
from bzrlib.plugins.svn.branch import SvnBranch
from bzrlib.plugins.svn.fetch import FetchRevisionFinder
from bzrlib.plugins.svn.format import get_rich_root_format
from bzrlib.plugins.svn.revmeta import filter_revisions
LATEST_IMPORT_REVISION_FILENAME = "svn-import-revision"
def get_latest_svn_import_revision(repo, uuid):
"""Retrieve the latest revision checked by svn-import.
:param repo: A repository object.
:param uuid: Subversion repository UUID.
"""
try:
text = repo.bzrdir.transport.get_bytes(LATEST_IMPORT_REVISION_FILENAME)
except NoSuchFile:
return 0
(text_uuid, revnum) = text.strip().split(" ")
if text_uuid != uuid:
return 0
return int(revnum)
def put_latest_svn_import_revision(repo, uuid, revnum):
"""Store the latest revision checked by svn-import.
:param repo: A repository object.
:param uuid: Subversion repository UUID.
:param revnum: A revision number.
"""
repo.bzrdir.transport.put_bytes(LATEST_IMPORT_REVISION_FILENAME,
"%s %d\n" % (uuid, revnum))
def transport_makedirs(transport, location_url):
"""Create missing directories.
:param transport: Transport to use.
:param location_url: URL for which parents should be created.
"""
needed = [(transport, transport.relpath(location_url))]
while needed:
try:
transport, relpath = needed[-1]
transport.mkdir(relpath)
needed.pop()
except NoSuchFile:
if relpath == "":
raise
needed.append((transport, urlutils.dirname(relpath)))
class NotDumpFile(BzrError):
"""A file specified was not a dump file."""
_fmt = """%(dumpfile)s is not a dump file."""
def __init__(self, dumpfile):
BzrError.__init__(self)
self.dumpfile = dumpfile
def load_dumpfile(dumpfile, outputdir):
"""Load a Subversion dump file.
:param dumpfile: Path to dump file.
:param outputdir: Directory in which Subversion repository should be
created.
"""
from cStringIO import StringIO
r = repos.create(outputdir)
if dumpfile.endswith(".gz"):
import gzip
file = gzip.GzipFile(dumpfile)
elif dumpfile.endswith(".bz2"):
import bz2
file = bz2.BZ2File(dumpfile)
else:
file = open(dumpfile)
try:
try:
r.load_fs(file, StringIO(), repos.LOAD_UUID_DEFAULT)
except SubversionException, (_, num):
if num == ERR_STREAM_MALFORMED_DATA:
raise NotDumpFile(dumpfile)
raise
finally:
file.close()
return r
def contains_parent_path(s, p):
while p != "":
if p in s:
return p
(p, _) = urlutils.split(p)
return False
def convert_repository(source_repos, output_url, layout=None,
create_shared_repo=True, working_trees=False, all=False,
format=None, filter_branch=None, keep=False,
incremental=False, to_revnum=None):
"""Convert a Subversion repository and its' branches to a
Bazaar repository.
:param source_repos: Subversion repository
:param output_url: URL to write Bazaar repository to.
:param layout: Repository layout (object) to use
:param create_shared_repo: Whether to create a shared Bazaar repository
:param working_trees: Whether to create working trees
:param all: Whether old revisions, even those not part of any existing
branches, should be imported
:param format: Format to use
"""
def remove_branches(to_transport, removed_branches, exceptions):
# Remove removed branches
for bp in removed_branches:
skip = False
for e in exceptions:
if bp.startswith(e+"/"):
skip = True
break
if skip:
continue
fullpath = to_transport.local_abspath(bp)
if not os.path.isdir(fullpath):
continue
osutils.rmtree(fullpath)
assert not all or create_shared_repo
if format is None:
format = get_rich_root_format()
dirs = {}
to_transport = get_transport(output_url)
def get_dir(path):
if dirs.has_key(path):
return dirs[path]
nt = to_transport.clone(path)
try:
dirs[path] = bzrdir.BzrDir.open_from_transport(nt)
except NotBranchError:
transport_makedirs(to_transport, urlutils.join(to_transport.base, path))
dirs[path] = format.initialize_on_transport(nt)
return dirs[path]
if layout is not None:
source_repos.set_layout(layout)
else:
layout = source_repos.get_layout()
if create_shared_repo:
try:
target_repos = get_dir("").open_repository()
target_repos_is_empty = False # FIXME: Call Repository.is_empty() ?
assert (layout.is_branch("") or
target_repos.is_shared())
except NoRepositoryPresent:
target_repos = get_dir("").create_repository(shared=True)
target_repos_is_empty = True
target_repos.set_make_working_trees(working_trees)
else:
target_repos = None
target_repos_is_empty = False
source_repos.lock_read()
try:
if incremental and target_repos is not None:
from_revnum = get_latest_svn_import_revision(target_repos,
source_repos.uuid)
else:
from_revnum = 0
project = None
if to_revnum is None:
to_revnum = source_repos.get_latest_revnum()
mapping = source_repos.get_mapping()
existing_branches = {}
deleted = set()
it = source_repos._revmeta_provider.iter_all_changes(layout, mapping.is_branch_or_tag, to_revnum, from_revnum, project=project)
if create_shared_repo:
revfinder = FetchRevisionFinder(source_repos, target_repos, target_repos_is_empty)
(it, it_rev) = tee(it)
num_revs = 0
pb = ui.ui_factory.nested_progress_bar()
try:
for kind, item in it:
if kind == "revision":
pb.update("finding branches", to_revnum-item.revnum, to_revnum-from_revnum)
if (not item.branch_path in existing_branches and
layout.is_branch(item.branch_path, project=project) and
not contains_parent_path(deleted, item.branch_path)):
existing_branches[item.branch_path] = SvnBranch(source_repos, item.branch_path, revnum=item.revnum, _skip_check=True)
num_revs += 1
elif kind == "delete":
deleted.add(item)
finally:
pb.finished()
if create_shared_repo:
inter = InterRepository.get(source_repos, target_repos)
if (target_repos.is_shared() and
getattr(inter, '_supports_revmetas', None) and
inter._supports_revmetas):
# TODO: Skip revisions in removed branches unless all=True
pb = ui.ui_factory.nested_progress_bar()
try:
pb.update("checking revisions to fetch", 0, num_revs)
revmetas = revfinder.find_iter(filter_revisions(it_rev),
mapping, pb)
finally:
pb.finished()
inter.fetch(needed=revmetas)
elif all:
inter.fetch()
if not keep:
remove_branches(to_transport, deleted, existing_branches.keys())
existing_branches = existing_branches.values()
if filter_branch is not None:
existing_branches = filter(filter_branch, existing_branches)
source_graph = source_repos.get_graph()
pb = ui.ui_factory.nested_progress_bar()
try:
for i, source_branch in enumerate(existing_branches):
try:
pb.update("%s:%d" % (source_branch.get_branch_path(),
source_branch.get_revnum()), i, len(existing_branches))
except SubversionException, (_, ERR_FS_NOT_DIRECTORY):
continue
target_dir = get_dir(source_branch.get_branch_path())
if not create_shared_repo:
try:
target_dir.open_repository()
except NoRepositoryPresent:
target_dir.create_repository()
try:
target_branch = target_dir.open_branch()
except NotBranchError:
target_branch = target_dir.create_branch()
target_branch.set_parent(source_branch.base)
if source_branch.last_revision() != target_branch.last_revision():
# Check if target_branch contains a subset of
# source_branch. If that is not the case,
# assume that source_branch has been replaced
# and remove target_branch
if not source_graph.is_ancestor(
ensure_null(target_branch.last_revision()),
ensure_null(source_branch.last_revision())):
target_branch.set_revision_history([])
target_branch.pull(source_branch)
if working_trees and not target_dir.has_workingtree():
target_dir.create_workingtree()
finally:
pb.finished()
finally:
source_repos.unlock()
if target_repos is not None:
put_latest_svn_import_revision(target_repos, source_repos.uuid, to_revnum)
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