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Viewing changes to loggerhead/apps/branch.py

  • Committer: Robey Pointer
  • Date: 2007-01-14 05:40:40 UTC
  • Revision ID: robey@lag.net-20070114054040-7i9lbhq992e612rq
fix up dev.cfg so that nobody will ever have to edit it, by letting the
important params be overridable in loggerhead.conf.

make start-loggerhead actually daemonize, write a pid file, and write logs
to normal log files, instead of requiring 'nohup' stuff.  ie act like a real
server.  added stop-loggerhead to do a clean shutdown.  changed the README
to clarify how it should work now.

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loggerhead/apps/branch.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
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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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#
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"""The WSGI application for serving a Bazaar branch."""
18
 
 
19
 
import logging
20
 
import urllib
21
 
import sys
22
 
 
23
 
import bzrlib.branch
24
 
import bzrlib.lru_cache
25
 
 
26
 
from paste import request
27
 
from paste import httpexceptions
28
 
 
29
 
from loggerhead.apps import static_app
30
 
from loggerhead.controllers.annotate_ui import AnnotateUI
31
 
from loggerhead.controllers.atom_ui import AtomUI
32
 
from loggerhead.controllers.changelog_ui import ChangeLogUI
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from loggerhead.controllers.diff_ui import DiffUI
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from loggerhead.controllers.download_ui import DownloadUI
35
 
from loggerhead.controllers.filediff_ui import FileDiffUI
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from loggerhead.controllers.inventory_ui import InventoryUI
37
 
from loggerhead.controllers.revision_ui import RevisionUI
38
 
from loggerhead.controllers.revlog_ui import RevLogUI
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from loggerhead.controllers.search_ui import SearchUI
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from loggerhead.history import History
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from loggerhead import util
42
 
 
43
 
 
44
 
_DEFAULT = object()
45
 
 
46
 
class BranchWSGIApp(object):
47
 
 
48
 
    def __init__(self, branch, friendly_name=None, config={},
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                 graph_cache=None, branch_link=None, is_root=False,
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                 served_url=_DEFAULT, use_cdn=False):
51
 
        self.branch = branch
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        self._config = config
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        self.friendly_name = friendly_name
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        self.branch_link = branch_link  # Currently only used in Launchpad
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        self.log = logging.getLogger('loggerhead.%s' % friendly_name)
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        if graph_cache is None:
57
 
            graph_cache = bzrlib.lru_cache.LRUCache(10)
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        self.graph_cache = graph_cache
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        self.is_root = is_root
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        self.served_url = served_url
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        self.use_cdn = use_cdn
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63
 
    def get_history(self):
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        file_cache = None
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        revinfo_disk_cache = None
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        cache_path = self._config.get('cachepath', None)
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        if cache_path is not None:
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            # Only import the cache if we're going to use it.
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            # This makes sqlite optional
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            try:
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                from loggerhead.changecache import (
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                    FileChangeCache, RevInfoDiskCache)
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            except ImportError:
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                self.log.debug("Couldn't load python-sqlite,"
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                               " continuing without using a cache")
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            else:
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                file_cache = FileChangeCache(cache_path)
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                revinfo_disk_cache = RevInfoDiskCache(cache_path)
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        return History(
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            self.branch, self.graph_cache, file_cache=file_cache,
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            revinfo_disk_cache=revinfo_disk_cache, cache_key=self.friendly_name)
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    def url(self, *args, **kw):
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        if isinstance(args[0], list):
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            args = args[0]
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        qs = []
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        for k, v in kw.iteritems():
88
 
            if v is not None:
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                qs.append('%s=%s'%(k, urllib.quote(v)))
90
 
        qs = '&'.join(qs)
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        return request.construct_url(
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            self._environ, script_name=self._url_base,
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            path_info=unicode('/'.join(args)).encode('utf-8'),
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            querystring=qs)
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96
 
    def context_url(self, *args, **kw):
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        kw = util.get_context(**kw)
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        return self.url(*args, **kw)
99
 
 
100
 
    def static_url(self, path):
101
 
        return self._static_url_base + path
102
 
 
103
 
    def yui_url(self, path):
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        if self.use_cdn:
105
 
            base = 'http://yui.yahooapis.com/3.0.0pr2/build/'
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        else:
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            base = self.static_url('/static/javascript/yui/build/')
108
 
        return base + path
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110
 
    controllers_dict = {
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        '+filediff': FileDiffUI,
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        '+revlog': RevLogUI,
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        'annotate': AnnotateUI,
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        'atom': AtomUI,
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        'changes': ChangeLogUI,
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        'diff': DiffUI,
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        'download': DownloadUI,
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        'files': InventoryUI,
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        'revision': RevisionUI,
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        'search': SearchUI,
121
 
        }
122
 
 
123
 
    def last_updated(self):
124
 
        h = self.get_history()
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        change = h.get_changes([h.last_revid])[0]
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        return change.date
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128
 
    def public_branch_url(self):
129
 
        return self.branch.get_config().get_user_option('public_branch')
130
 
 
131
 
    def app(self, environ, start_response):
132
 
        # Check again if the branch is blocked from being served, this is
133
 
        # mostly for tests. It's already checked in apps/transport.py
134
 
        if self.branch.get_config().get_user_option('http_serve') == 'False':
135
 
            raise httpexceptions.HTTPNotFound()
136
 
        self._url_base = environ['SCRIPT_NAME']
137
 
        self._static_url_base = environ.get('loggerhead.static.url')
138
 
        if self._static_url_base is None:
139
 
            self._static_url_base = self._url_base
140
 
        self._environ = environ
141
 
        if self.served_url is _DEFAULT:
142
 
            public_branch = self.public_branch_url()
143
 
            if public_branch is not None:
144
 
                self.served_url = public_branch
145
 
            else:
146
 
                # Loggerhead only supports serving .bzr/ on local branches, so
147
 
                # we shouldn't suggest something that won't work.
148
 
                if self.branch.base.startswith('file://'):
149
 
                    self.served_url = self.url([])
150
 
                else:
151
 
                    self.served_url = None
152
 
        path = request.path_info_pop(environ)
153
 
        if not path:
154
 
            raise httpexceptions.HTTPMovedPermanently(
155
 
                self._url_base + '/changes')
156
 
        if path == 'static':
157
 
            return static_app(environ, start_response)
158
 
        cls = self.controllers_dict.get(path)
159
 
        if cls is None:
160
 
            raise httpexceptions.HTTPNotFound()
161
 
        self.branch.lock_read()
162
 
        try:
163
 
            try:
164
 
                c = cls(self, self.get_history)
165
 
                return c(environ, start_response)
166
 
            except:
167
 
                environ['exc_info'] = sys.exc_info()
168
 
                environ['branch'] = self
169
 
                raise
170
 
        finally:
171
 
            self.branch.unlock()