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# Copyright (C) 2011-2012 Aleksey Lim
#
# 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 logging
from os.path import isabs
from zeroinstall.injector import model
from sugar_network.zerosugar import lsb_release, parse_version
from active_toolkit import util
clients = []
_logger = logging.getLogger('zerosugar.feeds')
def read(context):
feed = _Feed(context)
feed_content = None
client = None
for client in clients:
try:
feed_content = client.get(['context', context],
reply=['versions', 'packages'])
_logger.debug('Found %r in %r mountpoint',
context, client.params['mountpoint'])
break
except Exception:
util.exception(_logger,
'Failed to fetch %r feed from %r mountpoint',
context, client.params['mountpoint'])
if feed_content is None:
_logger.warning('No feed for %r context', context)
return None
distro = feed_content['packages'].get(lsb_release.distributor_id())
if distro:
feed.to_resolve = distro.get('binary')
for release in feed_content['versions']:
impl_id = release['guid']
impl = _Implementation(feed, impl_id, None)
impl.client = client
impl.version = parse_version(release['version'])
impl.released = 0
impl.arch = release['arch']
impl.upstream_stability = model.stability_levels[release['stability']]
impl.requires.extend(_read_requires(release.get('requires')))
if isabs(impl_id):
impl.local_path = impl_id
else:
impl.add_download_source(impl_id,
release.get('size') or 0, release.get('extract'))
for name, command in release['commands'].items():
impl.commands[name] = _Command(name, command)
for name, insert, mode in release.get('bindings') or []:
binding = model.EnvironmentBinding(name, insert, mode=mode)
impl.bindings.append(binding)
feed.implementations[impl_id] = impl
return feed
class _Feed(model.ZeroInstallFeed):
# pylint: disable-msg=E0202
def __init__(self, context):
self.context = context
self.local_path = None
self.implementations = {}
self.last_modified = None
self.feeds = []
self.metadata = []
self.last_checked = None
self.to_resolve = None
self._package_implementations = []
@property
def url(self):
return self.context
@property
def feed_for(self):
return set([self.context])
@property
def name(self):
return self.context
@property
def summaries(self):
# TODO i18n
return {}
@property
def first_summary(self):
return self.context
@property
def descriptions(self):
# TODO i18n
return {}
@property
def first_description(self):
return self.context
def resolve(self, packages):
top_package = packages[0]
impl = _Implementation(self, self.context, None)
impl.version = parse_version(top_package['version'])
impl.released = 0
impl.arch = '*-%s' % top_package['arch']
impl.upstream_stability = model.stability_levels['packaged']
impl.to_install = [i for i in packages if not i['installed']]
self.implementations[self.context] = impl
self.to_resolve = None
class _Implementation(model.ZeroInstallImplementation):
client = None
to_install = None
def is_available(self, stores=None):
return self.to_install is not None or bool(self.local_path)
class _Dependency(model.InterfaceDependency):
def __init__(self, guid, data):
self._importance = data.get('importance', model.Dependency.Essential)
self._metadata = {}
self.qdom = None
self.interface = guid
self.restrictions = []
self.bindings = []
for not_before, before in data.get('restrictions') or []:
restriction = model.VersionRangeRestriction(
not_before=parse_version(not_before),
before=parse_version(before))
self.restrictions.append(restriction)
@property
def context(self):
return self.interface
@property
def metadata(self):
return self._metadata
@property
def importance(self):
return self._importance
def get_required_commands(self):
return []
@property
def command(self):
pass
class _Command(model.Command):
def __init__(self, name, data):
self.qdom = None
self.name = name
self._path = data['exec']
# TODO
#self._requires = _read_requires(data.get('requires'))
self._requires = []
@property
def path(self):
return self._path
@property
def requires(self):
return self._requires
def get_runner(self):
pass
def __str__(self):
return ''
@property
def bindings(self):
return []
def _read_requires(data):
result = []
for guid, dep_data in (data or {}).items():
result.append(_Dependency(guid, dep_data))
return result
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