except OSError:

                continue

        return repos_list

    def get_repos(self, all_repos=None):

        """Get all repos from db and for each repo create it's backend instance.

        and fill that backed with information from database

        :param all_repos: give specific repositories list, good for filtering

        """

        if all_repos is None:

            all_repos = self.sa.query(Repository)\

                .order_by(Repository.repo_name).all()

        #get the repositories that should be invalidated

        invalidation_list = [str(x.cache_key) for x in \

                             self.sa.query(CacheInvalidation.cache_key)\

                             .filter(CacheInvalidation.cache_active == False)\

                             .all()]

        for r in all_repos:

                last_change = repo.last_change

                tip = h.get_changeset_safe(repo, 'tip')

                tmp_d = {}

                tmp_d['name'] = r.repo_name

                tmp_d['name_sort'] = tmp_d['name'].lower()

                tmp_d['description'] = dbrepo.description

                tmp_d['description_sort'] = tmp_d['description']

                tmp_d['last_change'] = last_change

                tmp_d['last_change_sort'] = time.mktime(last_change.timetuple())

                tmp_d['tip'] = tip.raw_id

                tmp_d['tip_sort'] = tip.revision

                tmp_d['rev'] = tip.revision

                tmp_d['contact'] = dbrepo.user.full_contact

                tmp_d['contact_sort'] = tmp_d['contact']

                tmp_d['owner_sort'] = tmp_d['contact']

                tmp_d['repo_archives'] = list(repo._get_archives())

                tmp_d['last_msg'] = tip.message

                tmp_d['repo'] = repo

                tmp_d['dbrepo'] = dbrepo

                yield tmp_d

    def get(self, repo_name, invalidation_list=None, retval='all'):

        """Returns a tuple of Repository,DbRepository,