/brz/remove-bazaar

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  • Committer: Robert Collins
  • Date: 2010-05-06 11:08:10 UTC
  • mto: This revision was merged to the branch mainline in revision 5223.
  • Revision ID: robertc@robertcollins.net-20100506110810-h3j07fh5gmw54s25
Cleaner matcher matching revised unlocking protocol.

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server.py
1
 
# Copyright (C) 2008 Canonical Ltd
2
 
#
3
 
# This program is free software; you can redistribute it and/or modify
4
 
# it under the terms of the GNU General Public License as published by
5
 
# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
7
 
#
8
 
# This program is distributed in the hope that it will be useful,
9
 
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
 
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11
 
# GNU General Public License for more details.
12
 
#
13
 
# You should have received a copy of the GNU General Public License
14
 
# along with this program; if not, write to the Free Software
15
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
 
 
17
 
import os
18
 
import stat
19
 
import tempfile
20
 
 
21
 
from bzrlib.bzrdir import (
22
 
    BzrDir,
23
 
    )
24
 
from bzrlib.inventory import (
25
 
    InventoryDirectory,
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    InventoryFile,
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    )
28
 
from bzrlib.osutils import (
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    splitpath,
30
 
    )
31
 
from bzrlib.repository import (
32
 
    Repository,
33
 
    )
34
 
 
35
 
from bzrlib.plugins.git.fetch import (
36
 
    import_git_objects,
37
 
    )
38
 
from bzrlib.plugins.git.mapping import (
39
 
    default_mapping,
40
 
    inventory_to_tree_and_blobs,
41
 
    revision_to_commit,
42
 
    )
43
 
 
44
 
from dulwich.server import (
45
 
    Backend,
46
 
    )
47
 
from dulwich.pack import (
48
 
    Pack,
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    PackData,
50
 
    write_pack_index_v2,
51
 
    )
52
 
from dulwich.objects import (
53
 
    Blob,
54
 
    Commit,
55
 
    ShaFile,
56
 
    Tree,
57
 
    )
58
 
 
59
 
S_IFGITLINK = 0160000
60
 
 
61
 
#S_IFREG | 0664 # *Might* see this; would fail fsck --strict
62
 
 
63
 
 
64
 
class BzrBackend(Backend):
65
 
 
66
 
    def __init__(self, directory):
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        self.directory = directory
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        self.mapping = default_mapping
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70
 
    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(self.directory)
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        repo = repo_dir.open_repository()
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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] = self.mapping.revision_id_bzr_to_foreign(branch.last_revision())[0]
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        if 'HEAD' not in ret and branch:
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            ret['HEAD'] = self.mapping.revision_id_bzr_to_foreign(branch.last_revision())[0]
82
 
        return ret
83
 
 
84
 
    def apply_pack(self, refs, read):
85
 
        """ apply pack from client to current repository """
86
 
 
87
 
        fd, path = tempfile.mkstemp(suffix=".pack")
88
 
        f = os.fdopen(fd, 'w')
89
 
        f.write(read())
90
 
        f.close()
91
 
 
92
 
        p = PackData(path)
93
 
        entries = p.sorted_entries()
94
 
        write_pack_index_v2(path[:-5]+".idx", entries, p.calculate_checksum())
95
 
 
96
 
        def get_objects():
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            pack = Pack(path[:-5])
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            for obj in pack.iterobjects():
99
 
                yield obj
100
 
 
101
 
        target = Repository.open(self.directory)
102
 
 
103
 
        target.lock_write()
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        try:
105
 
            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()
112
 
 
113
 
        for oldsha, sha, ref in refs:
114
 
            if ref[:11] == 'refs/heads/':
115
 
                branch_nick = ref[11:]
116
 
 
117
 
                try:
118
 
                    target_dir = BzrDir.open(self.directory + "/" + branch_nick)
119
 
                except:
120
 
                    target_dir = BzrDir.create(self.directory + "/" + branch_nick)
121
 
 
122
 
                try:
123
 
                    target_branch = target_dir.open_branch()
124
 
                except:
125
 
                    target_branch = target_dir.create_branch()
126
 
 
127
 
                rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
128
 
                target_branch.generate_revision_history(rev_id)
129
 
 
130
 
    def fetch_objects(self, determine_wants, graph_walker, progress):
131
 
        """ yield git objects to send to client """
132
 
        repo = Repository.open(self.directory)
133
 
 
134
 
        # If this is a Git repository, just use the existing fetch_objects implementation.
135
 
        if getattr(repo, "fetch_objects", None) is None:
136
 
            return repo.fetch_objects(determine_wants, graph_walker, None, progress)
137
 
 
138
 
        wants = determine_wants(self.get_refs())
139
 
        commits_to_send = set([self.mapping.revision_id_foreign_to_bzr(w) for w in wants])
140
 
        rev_done = set()
141
 
        obj_sent = set()
142
 
 
143
 
        objects = set()
144
 
 
145
 
        repo.lock_read()
146
 
        try:
147
 
            have = graph_walker.next()
148
 
            while have:
149
 
                rev_done.add(have)
150
 
                if repo.has_revision(self.mapping.revision_id_foreign_to_bzr(sha)):
151
 
                    graph_walker.ack(have)
152
 
                have = graph_walker.next()
153
 
 
154
 
            while commits_to_send:
155
 
                commit = commits_to_send.pop()
156
 
                if commit in rev_done:
157
 
                    continue
158
 
                rev_done.add(commit)
159
 
 
160
 
                rev = repo.get_revision(commit)
161
 
 
162
 
                commits_to_send.update([p for p in rev.parent_ids if not p in rev_done])
163
 
 
164
 
                for sha, obj, path in inventory_to_tree_and_blobs(repo, self.mapping, commit):
165
 
                    if sha not in obj_sent:
166
 
                        obj_sent.add(sha)
167
 
                        objects.add((obj, path))
168
 
 
169
 
                objects.add((revision_to_commit(rev, sha, self.mapping.revision_id_bzr_to_foreign), None))
170
 
 
171
 
        finally:
172
 
            repo.unlock()
173
 
 
174
 
        return (len(objects), iter(objects))
175