/brz/remove-bazaar

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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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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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29
 
 
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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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    BackendRepo,
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    )
 
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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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50
 
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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)
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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 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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        """ 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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                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()
 
120
 
 
121
                rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
 
122
                target_branch.generate_revision_history(rev_id)
 
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124
    def fetch_objects(self, determine_wants, graph_walker, progress):
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125
        """ yield git objects to send to client """
 
126
        bzrdir = BzrDir.open_from_transport(self.transport)
 
127
        repo = bzrdir.find_repository()
 
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129
        # If this is a Git repository, just use the existing fetch_objects implementation.
 
130
        if getattr(repo, "fetch_objects", None) is not None:
 
131
            return repo.fetch_objects(determine_wants, graph_walker, None, progress)
73
132
 
74
133
        wants = determine_wants(self.get_refs())
75
 
        self.repo.lock_read()
76
 
        try:
77
 
            have = self.object_store.find_common_revisions(graph_walker)
78
 
            return self.object_store.generate_pack_contents(have, wants, progress,
79
 
                get_tagged)
80
 
        finally:
81
 
            self.repo.unlock()
 
134
        graph_walker.reset()
 
135
        repo.lock_read()
 
136
        store = BazaarObjectStore(repo)
 
137
        have = store.find_common_revisions(graph_walker)
 
138
        missing_sha1s = store.find_missing_objects(have, wants, progress)
 
139
        return store.iter_shas(missing_sha1s)
82
140
 
83
141
 
84
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def serve_git(transport, host=None, port=None, inet=False):
85
143
    backend = BzrBackend(transport)
86
144
 
87
 
    if host is None:
88
 
        host = 'localhost'
89
 
    if port:
90
 
        server = TCPGitServer(backend, host, port)
91
 
    else:
92
 
        server = TCPGitServer(backend, host)
 
145
    server = TCPGitServer(backend, 'localhost')
93
146
    server.serve_forever()