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  • Committer: Robert Collins
  • Date: 2010-05-05 00:05:29 UTC
  • mto: This revision was merged to the branch mainline in revision 5206.
  • Revision ID: robertc@robertcollins.net-20100505000529-ltmllyms5watqj5u
Make 'pydoc bzrlib.tests.build_tree_shape' useful.

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server.py
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# Copyright (C) 2008 Canonical Ltd
2
 
#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
12
 
#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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import os
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import tempfile
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20
 
from dulwich.server import TCPGitServer
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import os
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from bzrlib.bzrdir import (
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    BzrDir,
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    BzrDirFormat,
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    )
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from bzrlib.repository import (
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    Repository,
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    )
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from bzrlib.plugins.git.fetch import (
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    import_git_objects,
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    BazaarObjectStore,
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    )
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from bzrlib.plugins.git.mapping import (
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    default_mapping,
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    )
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from bzrlib.plugins.git.object_store import (
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    get_object_store
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    )
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from dulwich.server import (
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    Backend,
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    )
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from dulwich.pack import (
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    Pack,
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    PackData,
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    write_pack_index_v2,
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    )
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class BzrBackend(Backend):
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    def __init__(self, transport):
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        self.transport = transport
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        self.mapping = default_mapping
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    def get_refs(self):
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        """ return a dict of all tags and branches in repository (and shas) """
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        ret = {}
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        repo_dir = BzrDir.open_from_transport(self.transport)
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        repo = repo_dir.find_repository()
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        repo.lock_read()
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        try:
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            store = get_object_store(repo)
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            branch = None
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            for branch in repo.find_branches(using=True):
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                #FIXME: Look for 'master' or 'trunk' in here, and set HEAD accordingly...
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                #FIXME: Need to get branch path relative to its repository and use this instead of nick
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                ret["refs/heads/"+branch.nick] = store._lookup_revision_sha1(branch.last_revision())
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            if 'HEAD' not in ret and branch:
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                ret['HEAD'] = store._lookup_revision_sha1(branch.last_revision())
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        finally:
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            repo.unlock()
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        return ret
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    def apply_pack(self, refs, read):
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        """ apply pack from client to current repository """
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        fd, path = tempfile.mkstemp(suffix=".pack")
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        f = os.fdopen(fd, 'w')
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        f.write(read())
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        f.close()
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        p = PackData(path)
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        entries = p.sorted_entries()
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        write_pack_index_v2(path[:-5]+".idx", entries, p.calculate_checksum())
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        def get_objects():
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            pack = Pack(path[:-5])
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            for obj in pack.iterobjects():
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                yield obj
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        target = Repository.open_from_transport(self.transport)
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        target.lock_write()
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        try:
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            target.start_write_group()
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            try:
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                import_git_objects(target, self.mapping, iter(get_objects()))
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            finally:
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                target.commit_write_group()
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        finally:
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            target.unlock()
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        for oldsha, sha, ref in refs:
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            if ref[:11] == 'refs/heads/':
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                branch_nick = ref[11:]
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                transport = self.transport.clone(branch_nick)
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                try:
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                    target_dir = BzrDir.open_from_transport(transport)
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                except:
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                    format = BzrDirFormat.get_default_format()
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                    format.initialize_on_transport(transport)
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117
 
                try:
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                    target_branch = target_dir.open_branch()
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                except:
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                    target_branch = target_dir.create_branch()
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122
 
                rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
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                target_branch.generate_revision_history(rev_id)
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125
 
    def fetch_objects(self, determine_wants, graph_walker, progress):
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        """ yield git objects to send to client """
127
 
        bzrdir = BzrDir.open_from_transport(self.transport)
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        repo = bzrdir.find_repository()
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130
 
        # If this is a Git repository, just use the existing fetch_objects implementation.
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        if getattr(repo, "fetch_objects", None) is not None:
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            return repo.fetch_objects(determine_wants, graph_walker, None, progress)
133
 
 
134
 
        wants = determine_wants(self.get_refs())
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        repo.lock_read()
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        store = BazaarObjectStore(repo)
137
 
        have = store.find_common_revisions(graph_walker)
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        missing_sha1s = store.find_missing_objects(have, wants, progress)
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        return store.iter_shas(missing_sha1s)
140
 
 
141
 
 
142
 
def serve_git(transport, host=None, port=None, inet=False):
143
 
    backend = BzrBackend(transport)
144
 
 
145
 
    server = TCPGitServer(backend, 'localhost')
146
 
    server.serve_forever()