/brz/remove-bazaar

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Fix support for older versions of Dulwich.

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server.py
1
 
# Copyright (C) 2008 Jelmer Vernooij
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# Copyright (C) 2008 John Carr
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1
# Copyright (C) 2008 Canonical Ltd
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2
#
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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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16
 
 
17
import os
 
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import tempfile
 
19
 
19
20
from dulwich.server import TCPGitServer
20
21
 
21
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from bzrlib.bzrdir import (
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    BzrDir,
 
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    BzrDirFormat,
 
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    )
 
26
from bzrlib.repository import (
 
27
    Repository,
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28
    )
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29
 
 
30
from bzrlib.plugins.git.fetch import (
 
31
    import_git_objects,
 
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    BazaarObjectStore,
 
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    )
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34
from bzrlib.plugins.git.mapping import (
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    default_mapping,
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36
    )
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37
from bzrlib.plugins.git.object_store import (
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    get_object_store
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    )
31
 
from bzrlib.plugins.git.refs import (
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    BazaarRefsContainer,
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    )
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40
 
35
41
from dulwich.server import (
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    Backend,
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    BackendRepo,
 
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    )
 
44
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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    )
 
49
from dulwich.objects import (
 
50
    ShaFile,
 
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    sha_to_hex,
 
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    hex_to_sha,
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53
    )
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54
 
40
55
class BzrBackend(Backend):
41
 
    """A git serve backend that can use a Bazaar repository."""
42
56
 
43
57
    def __init__(self, transport):
44
58
        self.transport = transport
45
59
        self.mapping = default_mapping
46
60
 
47
 
    def open_repository(self, path):
48
 
        # FIXME: More secure path sanitization
49
 
        return BzrBackendRepo(self.transport.clone(path.lstrip("/")),
50
 
            self.mapping)
51
 
 
52
 
 
53
 
class BzrBackendRepo(BackendRepo):
54
 
 
55
 
    def __init__(self, transport, mapping):
56
 
        self.transport = transport
57
 
        self.mapping = mapping
58
 
        self.repo_dir = BzrDir.open_from_transport(self.transport)
59
 
        self.repo = self.repo_dir.find_repository()
60
 
        self.object_store = get_object_store(self.repo)
61
 
        self.refs = BazaarRefsContainer(self.repo_dir, self.object_store)
62
 
        self._refs = self.refs.as_dict() # Much faster for now..
63
 
 
64
61
    def get_refs(self):
65
 
        return self._refs
66
 
 
67
 
    def get_peeled(self, name):
68
 
        return self.get_refs()[name]
69
 
 
70
 
    def fetch_objects(self, determine_wants, graph_walker, progress,
71
 
        get_tagged=None):
 
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        """ return a dict of all tags and branches in repository (and shas) """
 
63
        ret = {}
 
64
        repo_dir = BzrDir.open_from_transport(self.transport)
 
65
        repo = repo_dir.find_repository()
 
66
        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
 
79
 
 
80
    def apply_pack(self, refs, read):
 
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        """ apply pack from client to current repository """
 
82
 
 
83
        fd, path = tempfile.mkstemp(suffix=".pack")
 
84
        f = os.fdopen(fd, 'w')
 
85
        f.write(read())
 
86
        f.close()
 
87
 
 
88
        p = PackData(path)
 
89
        entries = p.sorted_entries()
 
90
        heads = []
 
91
        for e in entries:
 
92
            sha = e[0]
 
93
            offset = e[1]
 
94
            t, o = p.get_object_at (offset)
 
95
            if t == 1 or t == 4:
 
96
                heads.append(sha)
 
97
        write_pack_index_v2(path[:-5]+".idx", entries, p.calculate_checksum())
 
98
 
 
99
        repo_dir = BzrDir.open_from_transport(self.transport)
 
100
        target = repo_dir.find_repository()
 
101
 
 
102
        objects = {}
 
103
        for tup in p.iterobjects():
 
104
            obj_type, obj = p.get_object_at (tup[0])
 
105
            if obj_type in range(1, 4):
 
106
                sf = ShaFile.from_raw_string (obj_type, obj)
 
107
                objects[hex_to_sha(sf.id)] = sf
 
108
 
 
109
        target.lock_write()
 
110
        try:
 
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            target.start_write_group()
 
112
            try:
 
113
                import_git_objects(target, self.mapping, objects,
 
114
                                   BazaarObjectStore (target, self.mapping),
 
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                                   heads)
 
116
            finally:
 
117
                target.commit_write_group()
 
118
        finally:
 
119
            target.unlock()
 
120
 
 
121
        for oldsha, sha, ref in refs:
 
122
            if ref[:11] == 'refs/heads/':
 
123
                branch_nick = ref[11:]
 
124
                transport = self.transport.clone(branch_nick)
 
125
 
 
126
                try:
 
127
                    target_dir = BzrDir.open_from_transport(transport)
 
128
                except:
 
129
                    format = BzrDirFormat.get_default_format()
 
130
                    format.initialize_on_transport(transport)
 
131
 
 
132
                try:
 
133
                    target_branch = target_dir.open_branch()
 
134
                except:
 
135
                    target_branch = target_dir.create_branch()
 
136
 
 
137
                rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
 
138
                target_branch.generate_revision_history(rev_id)
 
139
 
 
140
    def fetch_objects(self, determine_wants, graph_walker, progress):
72
141
        """ yield git objects to send to client """
 
142
        bzrdir = BzrDir.open_from_transport(self.transport)
 
143
        repo = bzrdir.find_repository()
 
144
 
 
145
        # If this is a Git repository, just use the existing fetch_objects implementation.
 
146
        if getattr(repo, "fetch_objects", None) is not None:
 
147
            return repo.fetch_objects(determine_wants, graph_walker, None, progress)
73
148
 
74
149
        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()
 
150
        graph_walker.reset()
 
151
        repo.lock_read()
 
152
        store = BazaarObjectStore(repo)
 
153
        have = store.find_common_revisions(graph_walker)
 
154
        missing_sha1s = store.find_missing_objects(have, wants, progress)
 
155
        return store.iter_shas(missing_sha1s)
82
156
 
83
157
 
84
158
def serve_git(transport, host=None, port=None, inet=False):
85
159
    backend = BzrBackend(transport)
86
160
 
87
 
    if host is None:
88
 
        host = 'localhost'
89
 
    if port:
90
 
        server = TCPGitServer(backend, host, port)
91
 
    else:
92
 
        server = TCPGitServer(backend, host)
 
161
    server = TCPGitServer(backend, 'localhost')
93
162
    server.serve_forever()