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# Copyright (C) 2008, 2009 Canonical Ltd.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
"""Serve branches at urls that mimic a transport's file system layout."""
import threading
from bzrlib import branch, errors, lru_cache, urlutils
from bzrlib.config import LocationConfig
from bzrlib.smart import request
from bzrlib.transport import get_transport
from bzrlib.transport.http import wsgi
from paste.request import path_info_pop
from paste import httpexceptions
from paste import urlparser
from loggerhead.apps.branch import BranchWSGIApp
from loggerhead.apps import favicon_app, robots_app, static_app
from loggerhead.controllers.directory_ui import DirectoryUI
_bools = {
'yes': True, 'no': False,
'on': True, 'off': False,
'1': True, '0': False,
'true': True, 'false': False,
}
class BranchesFromTransportServer(object):
def __init__(self, transport, root, name=None):
self.transport = transport
self.root = root
self.name = name
self._config = root._config
def app_for_branch(self, branch):
if not self.name:
name = branch._get_nick(local=True)
is_root = True
else:
name = self.name
is_root = False
branch_app = BranchWSGIApp(
branch,
name,
{'cachepath': self._config.SQL_DIR},
self.root.graph_cache,
is_root=is_root,
use_cdn=self._config.get_option('use_cdn'),
)
return branch_app.app
def app_for_non_branch(self, environ):
segment = path_info_pop(environ)
if segment is None:
raise httpexceptions.HTTPMovedPermanently(
environ['SCRIPT_NAME'] + '/')
elif segment == '':
if self.name:
name = self.name
else:
name = '/'
return DirectoryUI(
environ['loggerhead.static.url'], self.transport, name)
else:
new_transport = self.transport.clone(segment)
if self.name:
new_name = urlutils.join(self.name, segment)
else:
new_name = '/' + segment
return BranchesFromTransportServer(new_transport, self.root, new_name)
def app_for_bazaar_data(self, relpath):
if relpath == '/.bzr/smart':
root_transport = get_transport_for_thread(self.root.base)
wsgi_app = wsgi.SmartWSGIApp(root_transport)
return wsgi.RelpathSetter(wsgi_app, '', 'loggerhead.path_info')
else:
# TODO: Use something here that uses the transport API
# rather than relying on the local filesystem API.
base = self.transport.base
readonly_prefix = 'readonly+'
if base.startswith(readonly_prefix):
base = base[len(readonly_prefix):]
try:
path = urlutils.local_path_from_url(base)
except errors.InvalidURL:
raise httpexceptions.HTTPNotFound()
else:
return urlparser.make_static(None, path)
def check_serveable(self, config):
value = config.get_user_option('http_serve')
if value is None:
return
elif not _bools.get(value.lower(), True):
raise httpexceptions.HTTPNotFound()
def __call__(self, environ, start_response):
path = environ['PATH_INFO']
try:
b = branch.Branch.open_from_transport(self.transport)
except errors.NotBranchError:
if path.startswith('/.bzr'):
self.check_serveable(LocationConfig(self.transport.base))
return self.app_for_bazaar_data(path)(environ, start_response)
if not self.transport.listable() or not self.transport.has('.'):
raise httpexceptions.HTTPNotFound()
return self.app_for_non_branch(environ)(environ, start_response)
else:
self.check_serveable(b.get_config())
if path.startswith('/.bzr'):
return self.app_for_bazaar_data(path)(environ, start_response)
else:
return self.app_for_branch(b)(environ, start_response)
_transport_store = threading.local()
def get_transport_for_thread(base):
thread_transports = getattr(_transport_store, 'transports', None)
if thread_transports is None:
thread_transports = _transport_store.transports = {}
if base in thread_transports:
return thread_transports[base]
transport = get_transport(base)
thread_transports[base] = transport
return transport
class BranchesFromTransportRoot(object):
def __init__(self, base, config):
self.graph_cache = lru_cache.LRUCache(10)
self.base = base
self._config = config
def __call__(self, environ, start_response):
environ['loggerhead.static.url'] = environ['SCRIPT_NAME']
environ['loggerhead.path_info'] = environ['PATH_INFO']
if environ['PATH_INFO'].startswith('/static/'):
segment = path_info_pop(environ)
assert segment == 'static'
return static_app(environ, start_response)
elif environ['PATH_INFO'] == '/favicon.ico':
return favicon_app(environ, start_response)
elif environ['PATH_INFO'] == '/robots.txt':
return robots_app(environ, start_response)
else:
transport = get_transport_for_thread(self.base)
return BranchesFromTransportServer(
transport, self)(environ, start_response)
class UserBranchesFromTransportRoot(object):
def __init__(self, base, config):
self.graph_cache = lru_cache.LRUCache(10)
self.base = base
self._config = config
self.trunk_dir = config.get_option('trunk_dir')
def __call__(self, environ, start_response):
environ['loggerhead.static.url'] = environ['SCRIPT_NAME']
environ['loggerhead.path_info'] = environ['PATH_INFO']
path_info = environ['PATH_INFO']
if path_info.startswith('/static/'):
segment = path_info_pop(environ)
assert segment == 'static'
return static_app(environ, start_response)
elif path_info == '/favicon.ico':
return favicon_app(environ, start_response)
elif environ['PATH_INFO'] == '/robots.txt':
return robots_app(environ, start_response)
else:
transport = get_transport_for_thread(self.base)
# segments starting with ~ are user branches
if path_info.startswith('/~'):
segment = path_info_pop(environ)
return BranchesFromTransportServer(
transport.clone(segment[1:]), self, segment)(
environ, start_response)
else:
return BranchesFromTransportServer(
transport.clone(self.trunk_dir), self)(
environ, start_response)
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