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# Copyright (C) 2008 Canonical Ltd
#
# 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 2 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
import os
import tempfile
from bzrlib.repository import (
Repository,
)
from bzrlib.plugins.git.fetch import (
import_git_objects,
)
from bzrlib.plugins.git.mapping import (
default_mapping,
)
from bzrlib.plugins.git.object_store import (
get_object_store
)
from dulwich.server import (
Backend,
)
from dulwich.pack import (
Pack,
PackData,
write_pack_index_v2,
)
class BzrBackend(Backend):
def __init__(self, directory):
self.directory = directory
self.mapping = default_mapping
def get_refs(self):
""" return a dict of all tags and branches in repository (and shas) """
ret = {}
repo_dir = BzrDir.open(self.directory)
repo = repo_dir.open_repository()
store = get_object_store(repo)
branch = None
for branch in repo.find_branches(using=True):
#FIXME: Look for 'master' or 'trunk' in here, and set HEAD accordingly...
#FIXME: Need to get branch path relative to its repository and use this instead of nick
ret["refs/heads/"+branch.nick] = store._lookup_revision_sha1(branch.last_revision())
if 'HEAD' not in ret and branch:
ret['HEAD'] = store._lookup_revision_sha1(branch.last_revision())
return ret
def apply_pack(self, refs, read):
""" apply pack from client to current repository """
fd, path = tempfile.mkstemp(suffix=".pack")
f = os.fdopen(fd, 'w')
f.write(read())
f.close()
p = PackData(path)
entries = p.sorted_entries()
write_pack_index_v2(path[:-5]+".idx", entries, p.calculate_checksum())
def get_objects():
pack = Pack(path[:-5])
for obj in pack.iterobjects():
yield obj
target = Repository.open(self.directory)
target.lock_write()
try:
target.start_write_group()
try:
import_git_objects(target, self.mapping, iter(get_objects()))
finally:
target.commit_write_group()
finally:
target.unlock()
for oldsha, sha, ref in refs:
if ref[:11] == 'refs/heads/':
branch_nick = ref[11:]
try:
target_dir = BzrDir.open(self.directory + "/" + branch_nick)
except:
target_dir = BzrDir.create(self.directory + "/" + branch_nick)
try:
target_branch = target_dir.open_branch()
except:
target_branch = target_dir.create_branch()
rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
target_branch.generate_revision_history(rev_id)
def fetch_objects(self, determine_wants, graph_walker, progress):
""" yield git objects to send to client """
repo = Repository.open(self.directory)
# If this is a Git repository, just use the existing fetch_objects implementation.
if getattr(repo, "fetch_objects", None) is not None:
return repo.fetch_objects(determine_wants, graph_walker, None, progress)
wants = determine_wants(self.get_refs())
repo.lock_read()
try:
store = BazaarObjectStore(repo)
have = store.find_missing_revisions(graph_walker)
missing_sha1s = store.find_missing_objects(have, wants, progress)
return self.object_store.iter_shas(missing_sha1s)
finally:
repo.unlock()
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