Don't scan for readmes if changeset is an EmptyChangeset

rhodecode/controllers/summary.py

@@ -1,245 +1,247 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.controllers.summary
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
     Summary controller for Rhodecode
 
     :created_on: Apr 18, 2010
     :author: marcink
     :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # 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 3 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, see <http://www.gnu.org/licenses/>.
 
 import traceback
 import calendar
 import logging
 import urllib
 from time import mktime
 from datetime import timedelta, date
 from urlparse import urlparse
 from rhodecode.lib.compat import product
 
 from rhodecode.lib.vcs.exceptions import ChangesetError, EmptyRepositoryError, \
     NodeDoesNotExistError
 
 from pylons import tmpl_context as c, request, url, config
 from pylons.i18n.translation import _
 
 from beaker.cache import cache_region, region_invalidate
 
 from rhodecode.config.conf import ALL_READMES, ALL_EXTS, LANGUAGES_EXTENSIONS_MAP
 from rhodecode.model.db import Statistics, CacheInvalidation
 from rhodecode.lib.utils2 import safe_unicode
 from rhodecode.lib.auth import LoginRequired, HasRepoPermissionAnyDecorator
 from rhodecode.lib.base import BaseRepoController, render
 from rhodecode.lib.vcs.backends.base import EmptyChangeset
 from rhodecode.lib.markup_renderer import MarkupRenderer
 from rhodecode.lib.celerylib import run_task
 from rhodecode.lib.celerylib.tasks import get_commits_stats
 from rhodecode.lib.helpers import RepoPage
 from rhodecode.lib.compat import json, OrderedDict
 from rhodecode.lib.vcs.nodes import FileNode
 
 log = logging.getLogger(__name__)
 
 README_FILES = [''.join([x[0][0], x[1][0]]) for x in
                     sorted(list(product(ALL_READMES, ALL_EXTS)),
                            key=lambda y:y[0][1] + y[1][1])]
 
 
 class SummaryController(BaseRepoController):
 
     @LoginRequired()
     @HasRepoPermissionAnyDecorator('repository.read', 'repository.write',
                                    'repository.admin')
     def __before__(self):
         super(SummaryController, self).__before__()
 
     def index(self, repo_name):
         c.dbrepo = dbrepo = c.rhodecode_db_repo
         c.following = self.scm_model.is_following_repo(repo_name,
                                                 self.rhodecode_user.user_id)
 
         def url_generator(**kw):
             return url('shortlog_home', repo_name=repo_name, size=10, **kw)
 
         c.repo_changesets = RepoPage(c.rhodecode_repo, page=1,
                                      items_per_page=10, url=url_generator)
 
         if self.rhodecode_user.username == 'default':
             # for default(anonymous) user we don't need to pass credentials
             username = ''
             password = ''
         else:
             username = str(self.rhodecode_user.username)
             password = '@'
 
         parsed_url = urlparse(url.current(qualified=True))
 
         default_clone_uri = '{scheme}://{user}{pass}{netloc}{path}'
 
         uri_tmpl = config.get('clone_uri', default_clone_uri)
         uri_tmpl = uri_tmpl.replace('{', '%(').replace('}', ')s')
         decoded_path = safe_unicode(urllib.unquote(parsed_url.path))
         uri_dict = {
            'user': username,
            'pass': password,
            'scheme': parsed_url.scheme,
            'netloc': parsed_url.netloc,
            'path': decoded_path
         }
 
         uri = uri_tmpl % uri_dict
         # generate another clone url by id
         uri_dict.update(
          {'path': decoded_path.replace(repo_name, '_%s' % c.dbrepo.repo_id)}
         )
         uri_id = uri_tmpl % uri_dict
 
         c.clone_repo_url = uri
         c.clone_repo_url_id = uri_id
         c.repo_tags = OrderedDict()
         for name, hash_ in c.rhodecode_repo.tags.items()[:10]:
             try:
                 c.repo_tags[name] = c.rhodecode_repo.get_changeset(hash_)
             except ChangesetError:
                 c.repo_tags[name] = EmptyChangeset(hash_)
 
         c.repo_branches = OrderedDict()
         for name, hash_ in c.rhodecode_repo.branches.items()[:10]:
             try:
                 c.repo_branches[name] = c.rhodecode_repo.get_changeset(hash_)
             except ChangesetError:
                 c.repo_branches[name] = EmptyChangeset(hash_)
 
         td = date.today() + timedelta(days=1)
         td_1m = td - timedelta(days=calendar.mdays[td.month])
         td_1y = td - timedelta(days=365)
 
         ts_min_m = mktime(td_1m.timetuple())
         ts_min_y = mktime(td_1y.timetuple())
         ts_max_y = mktime(td.timetuple())
 
         if dbrepo.enable_statistics:
             c.show_stats = True
             c.no_data_msg = _('No data loaded yet')
             run_task(get_commits_stats, c.dbrepo.repo_name, ts_min_y, ts_max_y)
         else:
             c.show_stats = False
             c.no_data_msg = _('Statistics are disabled for this repository')
         c.ts_min = ts_min_m
         c.ts_max = ts_max_y
 
         stats = self.sa.query(Statistics)\
             .filter(Statistics.repository == dbrepo)\
             .scalar()
 
         c.stats_percentage = 0
 
         if stats and stats.languages:
             c.no_data = False is dbrepo.enable_statistics
             lang_stats_d = json.loads(stats.languages)
             c.commit_data = stats.commit_activity
             c.overview_data = stats.commit_activity_combined
 
             lang_stats = ((x, {"count": y,
                                "desc": LANGUAGES_EXTENSIONS_MAP.get(x)})
                           for x, y in lang_stats_d.items())
 
             c.trending_languages = json.dumps(
                 sorted(lang_stats, reverse=True, key=lambda k: k[1])[:10]
             )
             last_rev = stats.stat_on_revision + 1
             c.repo_last_rev = c.rhodecode_repo.count()\
                 if c.rhodecode_repo.revisions else 0
             if last_rev == 0 or c.repo_last_rev == 0:
                 pass
             else:
                 c.stats_percentage = '%.2f' % ((float((last_rev)) /
                                                 c.repo_last_rev) * 100)
         else:
             c.commit_data = json.dumps({})
             c.overview_data = json.dumps([[ts_min_y, 0], [ts_max_y, 10]])
             c.trending_languages = json.dumps({})
             c.no_data = True
 
         c.enable_downloads = dbrepo.enable_downloads
         if c.enable_downloads:
             c.download_options = self._get_download_links(c.rhodecode_repo)
 
         c.readme_data, c.readme_file = \
             self.__get_readme_data(c.rhodecode_db_repo)
         return render('summary/summary.html')
 
     def __get_readme_data(self, db_repo):
         repo_name = db_repo.repo_name
 
         @cache_region('long_term')
         def _get_readme_from_cache(key):
             readme_data = None
             readme_file = None
             log.debug('Looking for README file')
             try:
                 # get's the landing revision! or tip if fails
                 cs = db_repo.get_landing_changeset()
+                if isinstance(cs, EmptyChangeset):
+                    raise EmptyRepositoryError()
                 renderer = MarkupRenderer()
                 for f in README_FILES:
                     try:
                         readme = cs.get_node(f)
                         if not isinstance(readme, FileNode):
                             continue
                         readme_file = f
                         log.debug('Found README file `%s` rendering...' %
                                   readme_file)
                         readme_data = renderer.render(readme.content, f)
                         break
                     except NodeDoesNotExistError:
                         continue
             except ChangesetError:
                 log.error(traceback.format_exc())
                 pass
             except EmptyRepositoryError:
                 pass
             except Exception:
                 log.error(traceback.format_exc())
 
             return readme_data, readme_file
 
         key = repo_name + '_README'
         inv = CacheInvalidation.invalidate(key)
         if inv is not None:
             region_invalidate(_get_readme_from_cache, None, key)
             CacheInvalidation.set_valid(inv.cache_key)
         return _get_readme_from_cache(key)
 
     def _get_download_links(self, repo):
 
         download_l = []
 
         branches_group = ([], _("Branches"))
         tags_group = ([], _("Tags"))
 
         for name, chs in c.rhodecode_repo.branches.items():
             #chs = chs.split(':')[-1]
             branches_group[0].append((chs, name),)
         download_l.append(branches_group)
 
         for name, chs in c.rhodecode_repo.tags.items():
             #chs = chs.split(':')[-1]
             tags_group[0].append((chs, name),)
         download_l.append(tags_group)
 
         return download_l