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Viewing changes to loggerhead/apps/transport.py

  • Committer: Robey Pointer
  • Date: 2006-12-29 02:42:07 UTC
  • Revision ID: robey@lag.net-20061229024207-hefrhxyf1ljpfhwd
slightly better side-by-side diff format (create 1 big table instead of many nested ones, so everything lines up)

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loggerhead/apps/transport.py
1
 
# Copyright (C) 2008, 2009 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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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# 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
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#
17
 
"""Serve branches at urls that mimic a transport's file system layout."""
18
 
 
19
 
import threading
20
 
 
21
 
from bzrlib import branch, errors, lru_cache, urlutils
22
 
from bzrlib.config import LocationConfig
23
 
from bzrlib.transport import get_transport
24
 
from bzrlib.transport.http import wsgi
25
 
 
26
 
from paste.request import path_info_pop
27
 
from paste import httpexceptions
28
 
from paste import urlparser
29
 
 
30
 
from loggerhead.apps.branch import BranchWSGIApp
31
 
from loggerhead.apps import favicon_app, static_app
32
 
from loggerhead.controllers.directory_ui import DirectoryUI
33
 
 
34
 
_bools = {
35
 
    'yes': True, 'no': False,
36
 
    'on': True, 'off': False,
37
 
    '1': True, '0': False,
38
 
    'true': True, 'false': False,
39
 
    }
40
 
 
41
 
class BranchesFromTransportServer(object):
42
 
 
43
 
    def __init__(self, transport, root, name=None):
44
 
        self.transport = transport
45
 
        self.root = root
46
 
        self.name = name
47
 
        self._config = root._config
48
 
 
49
 
    def app_for_branch(self, branch):
50
 
        if not self.name:
51
 
            name = branch._get_nick(local=True)
52
 
            is_root = True
53
 
        else:
54
 
            name = self.name
55
 
            is_root = False
56
 
        branch_app = BranchWSGIApp(
57
 
            branch, name,
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            {'cachepath': self._config.SQL_DIR},
59
 
            self.root.graph_cache, is_root=is_root,
60
 
            use_cdn=self._config.get_option('use_cdn'))
61
 
        return branch_app.app
62
 
 
63
 
    def app_for_non_branch(self, environ):
64
 
        segment = path_info_pop(environ)
65
 
        if segment is None:
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            raise httpexceptions.HTTPMovedPermanently(
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                environ['SCRIPT_NAME'] + '/')
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        elif segment == '':
69
 
            if self.name:
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                name = self.name
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            else:
72
 
                name = '/'
73
 
            return DirectoryUI(
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                environ['loggerhead.static.url'], self.transport, name)
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        else:
76
 
            new_transport = self.transport.clone(segment)
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            if self.name:
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                new_name = urlutils.join(self.name, segment)
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            else:
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                new_name = '/' + segment
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            return BranchesFromTransportServer(new_transport, self.root, new_name)
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    def app_for_bazaar_data(self, relpath):
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        if relpath == '/.bzr/smart':
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            wsgi_app = wsgi.SmartWSGIApp(self.transport)
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            return wsgi.RelpathSetter(wsgi_app, '', 'PATH_INFO')
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        else:
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            # TODO: Use something here that uses the transport API
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            # rather than relying on the local filesystem API.
90
 
            base = self.transport.base
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            readonly_prefix = 'readonly+'
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            if base.startswith(readonly_prefix):
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                base = base[len(readonly_prefix):]
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            try:
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                path = urlutils.local_path_from_url(base)
96
 
            except errors.InvalidURL, e:
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                raise httpexceptions.HTTPNotFound()
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            else:
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                return urlparser.make_static(None, path)
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101
 
    def check_serveable(self, config):
102
 
        value = config.get_user_option('http_serve')
103
 
        if value is None:
104
 
            return
105
 
        elif not _bools.get(value.lower(), True):
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            raise httpexceptions.HTTPNotFound()
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108
 
    def __call__(self, environ, start_response):
109
 
        path = environ['PATH_INFO']
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        try:
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            b = branch.Branch.open_from_transport(self.transport)
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        except errors.NotBranchError:
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            if path.startswith('/.bzr'):
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                self.check_serveable(LocationConfig(self.transport.base))
115
 
                return self.app_for_bazaar_data(path)(environ, start_response)
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            if not self.transport.listable() or not self.transport.has('.'):
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                raise httpexceptions.HTTPNotFound()
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            return self.app_for_non_branch(environ)(environ, start_response)
119
 
        else:
120
 
            self.check_serveable(b.get_config())
121
 
            if path.startswith('/.bzr'):
122
 
                return self.app_for_bazaar_data(path)(environ, start_response)
123
 
            else:
124
 
                return self.app_for_branch(b)(environ, start_response)
125
 
 
126
 
 
127
 
_transport_store = threading.local()
128
 
 
129
 
def get_transport_for_thread(base):
130
 
    """ """
131
 
    thread_transports = getattr(_transport_store, 'transports', None)
132
 
    if thread_transports is None:
133
 
        thread_transports = _transport_store.transports = {}
134
 
    if base in thread_transports:
135
 
        return thread_transports[base]
136
 
    transport = get_transport(base)
137
 
    return transport
138
 
 
139
 
 
140
 
class BranchesFromTransportRoot(object):
141
 
 
142
 
    def __init__(self, base, config):
143
 
        self.graph_cache = lru_cache.LRUCache(10)
144
 
        self.base = base
145
 
        self._config = config
146
 
 
147
 
    def __call__(self, environ, start_response):
148
 
        environ['loggerhead.static.url'] = environ['SCRIPT_NAME']
149
 
        if environ['PATH_INFO'].startswith('/static/'):
150
 
            segment = path_info_pop(environ)
151
 
            assert segment == 'static'
152
 
            return static_app(environ, start_response)
153
 
        elif environ['PATH_INFO'] == '/favicon.ico':
154
 
            return favicon_app(environ, start_response)
155
 
        else:
156
 
            transport = get_transport_for_thread(self.base)
157
 
            return BranchesFromTransportServer(
158
 
                transport, self)(environ, start_response)
159
 
 
160
 
 
161
 
class UserBranchesFromTransportRoot(object):
162
 
 
163
 
    def __init__(self, base, config):
164
 
        self.graph_cache = lru_cache.LRUCache(10)
165
 
        self.base = base
166
 
        self._config = config
167
 
        self.trunk_dir = config.get_option('trunk_dir')
168
 
 
169
 
    def __call__(self, environ, start_response):
170
 
        environ['loggerhead.static.url'] = environ['SCRIPT_NAME']
171
 
        path_info = environ['PATH_INFO']
172
 
        if path_info.startswith('/static/'):
173
 
            segment = path_info_pop(environ)
174
 
            assert segment == 'static'
175
 
            return static_app(environ, start_response)
176
 
        elif path_info == '/favicon.ico':
177
 
            return favicon_app(environ, start_response)
178
 
        else:
179
 
            transport = get_transport_for_thread(self.base)
180
 
            # segments starting with ~ are user branches
181
 
            if path_info.startswith('/~'):
182
 
                segment = path_info_pop(environ)
183
 
                new_transport = transport.clone(segment[1:])
184
 
                return BranchesFromTransportServer(
185
 
                    transport.clone(segment[1:]), self, segment)(
186
 
                    environ, start_response)
187
 
            else:
188
 
                return BranchesFromTransportServer(
189
 
                    transport.clone(self.trunk_dir), self)(
190
 
                    environ, start_response)