/brz/remove-bazaar

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Move refs code to separate module.

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server.py
 
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# Copyright (C) 2008 Jelmer Vernooij
 
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# Copyright (C) 2008 John Carr
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# Copyright (C) 2008 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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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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from dulwich.server import Backend
 
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from dulwich.server import TCPGitServer
 
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from bzrlib.bzrdir import (
 
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    BzrDir,
 
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    )
 
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from bzrlib.errors import (
 
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    NotBranchError,
 
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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 bzrlib.plugins.git.refs import (
 
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    branch_name_to_ref,
 
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    ref_to_branch_name,
 
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    )
 
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from dulwich.server import (
 
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    Backend,
 
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    BackendRepo,
 
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    )
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class BzrBackend(Backend):
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    def __init__(self, directory):
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        self.directory = directory
 
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    """A git serve backend that can use a Bazaar repository."""
 
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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 open_repository(self, path):
 
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        # FIXME: More secure path sanitization
 
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        return BzrBackendRepo(self.transport.clone(path.lstrip("/")),
 
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            self.mapping)
 
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class BzrBackendRepo(BackendRepo):
 
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    def __init__(self, transport, mapping):
 
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        self.transport = transport
 
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        self.mapping = mapping
 
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        self.repo_dir = BzrDir.open_from_transport(self.transport)
 
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        self.repo = self.repo_dir.find_repository()
 
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        self.object_store = get_object_store(self.repo)
 
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    def get_peeled(self, name):
 
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        return self.get_refs()[name]
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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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        return {}
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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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        self.read()
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    def fetch_objects(self, determine_wants, graph_walker, progress):
 
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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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        self.repo.lock_read()
 
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        try:
 
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            for branch in self.repo_dir.list_branches():
 
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                ref = branch_name_to_ref(branch.name, "refs/heads/master")
 
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                ret[ref] = self.object_store._lookup_revision_sha1(
 
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                    branch.last_revision())
 
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                assert type(ref) == str and type(ret[ref]) == str, \
 
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                        "(%s) %r -> %r" % (branch.name, ref, ret[ref])
 
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        finally:
 
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            self.repo.unlock()
 
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        return ret
 
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    def set_refs(self, refs):
 
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        for oldsha, sha, ref in refs:
 
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            try:
 
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                branch_name = ref_to_branch_name(ref)
 
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            except ValueError:
 
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                # FIXME: Cope with tags!
 
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                continue
 
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            try:
 
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                target_branch = self.repo_dir.open_branch(branch_name)
 
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            except NotBranchError:
 
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                target_branch = self.repo.create_branch(branch_name)
 
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            rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
 
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            target_branch.lock_write()
 
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            try:
 
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                target_branch.generate_revision_history(rev_id)
 
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            finally:
 
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                target_branch.unlock()
 
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    def fetch_objects(self, determine_wants, graph_walker, progress,
 
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        get_tagged=None):
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        """ yield git objects to send to client """
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        # If this is a Git repository, just use the existing fetch_objects implementation.
 
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        if getattr(self.repo, "fetch_objects", None) is not None:
 
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            return self.repo.fetch_objects(determine_wants, graph_walker, progress,
 
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                get_tagged)
 
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        wants = determine_wants(self.get_refs())
 
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        self.repo.lock_read()
 
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        try:
 
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            have = self.object_store.find_common_revisions(graph_walker)
 
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            return self.object_store.generate_pack_contents(have, wants, progress,
 
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                get_tagged)
 
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        finally:
 
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            self.repo.unlock()
 
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def serve_git(transport, host=None, port=None, inet=False):
 
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    backend = BzrBackend(transport)
 
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    if host is None:
 
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        host = 'localhost'
 
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    if port:
 
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        server = TCPGitServer(backend, host, port)
 
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    else:
 
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        server = TCPGitServer(backend, host)
 
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    server.serve_forever()