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  • Committer: Launchpad Patch Queue Manager
  • Date: 2010-04-09 05:56:19 UTC
  • mfrom: (252.1.1 devel)
  • Revision ID: launchpad@pqm.canonical.com-20100409055619-y3hvgbjigy9ssnjr
[rs=me] update to bzr-git trunk r884

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server.py
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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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from dulwich.server import TCPGitServer
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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 bzrlib.plugins.git.refs import (
 
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    BazaarRefsContainer,
 
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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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from dulwich.objects import (
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    ShaFile,
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    sha_to_hex,
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    hex_to_sha,
 
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    BackendRepo,
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    )
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class BzrBackend(Backend):
 
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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)
 
51
 
 
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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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        self.refs = BazaarRefsContainer(self.repo_dir, self.object_store)
 
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        self._refs = self.refs.as_dict() # Much faster for now..
 
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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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        heads = []
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        for e in entries:
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            sha = e[0]
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            offset = e[1]
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            t, o = p.get_object_at (offset)
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            if t == 1 or t == 4:
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                heads.append(sha)
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        write_pack_index_v2(path[:-5]+".idx", entries, p.calculate_checksum())
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        repo_dir = BzrDir.open_from_transport(self.transport)
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        target = repo_dir.find_repository()
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104
 
        objects = {}
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        for tup in p.iterobjects():
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            obj_type, obj = p.get_object_at (tup[0])
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            if obj_type in range(1, 4):
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                sf = ShaFile.from_raw_string (obj_type, obj)
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                objects[hex_to_sha(sf.id)] = sf
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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, objects,
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                                   BazaarObjectStore (target, self.mapping),
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                                   heads)
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            except:
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                target.abort_write_group()
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                raise
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            else:
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                target.commit_write_group()
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        finally:
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            target.unlock()
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126
 
        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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                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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142
 
                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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145
 
    def fetch_objects(self, determine_wants, graph_walker, progress):
 
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        return self._refs
 
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    def get_peeled(self, name):
 
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        return self.get_refs()[name]
 
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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 """
147
 
        bzrdir = BzrDir.open_from_transport(self.transport)
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        repo = bzrdir.find_repository()
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150
 
        # If this is a Git repository, just use the existing fetch_objects implementation.
151
 
        if getattr(repo, "fetch_objects", None) is not None:
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            return repo.fetch_objects(determine_wants, graph_walker, None, progress)[0]
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        wants = determine_wants(self.get_refs())
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        graph_walker.reset()
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        repo.lock_read()
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        store = BazaarObjectStore(repo)
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        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)
 
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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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163
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def serve_git(transport, host=None, port=None, inet=False):
164
85
    backend = BzrBackend(transport)
165
86
 
166
 
    server = TCPGitServer(backend, 'localhost')
 
87
    if host is None:
 
88
        host = 'localhost'
 
89
    if port:
 
90
        server = TCPGitServer(backend, host, port)
 
91
    else:
 
92
        server = TCPGitServer(backend, host)
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93
    server.serve_forever()