def testFeeds(self):
self.cache_iface(foo_iface_uri,
"""<?xml version="1.0" ?>
<interface last-modified="0"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<feed src='http://bar'/>
</interface>""" % foo_iface_uri)
self.cache_iface('http://bar',
"""<?xml version="1.0" ?>
<interface last-modified="0"
uri="http://bar"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<feed-for interface='%s'/>
<name>Bar</name>
<summary>Bar</summary>
<description>Bar</description>
<implementation version='1.0' id='sha1=123' main='dummy'>
<archive href='foo' size='10'/>
</implementation>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config = self.config)
policy.freshness = 0
policy.network_use = model.network_full
recalculate(policy)
assert policy.ready
foo_iface = self.config.iface_cache.get_interface(foo_iface_uri)
self.assertEquals('sha1=123', policy.implementation[foo_iface].id)
def testFeeds(self):
self.cache_iface(
foo_iface_uri, """<?xml version="1.0" ?>
<interface last-modified="0"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<feed src='http://bar'/>
</interface>""" % foo_iface_uri)
self.cache_iface(
'http://bar', """<?xml version="1.0" ?>
<interface last-modified="0"
uri="http://bar"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<feed-for interface='%s'/>
<name>Bar</name>
<summary>Bar</summary>
<description>Bar</description>
<implementation version='1.0' id='sha1=123' main='dummy'>
<archive href='foo' size='10'/>
</implementation>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config=self.config)
policy.freshness = 0
policy.network_use = model.network_full
recalculate(policy)
assert policy.ready
foo_iface = self.config.iface_cache.get_interface(foo_iface_uri)
self.assertEquals('sha1=123', policy.implementation[foo_iface].id)
def build():
# Get the chosen versions
src_policy = Policy(interface.uri, src=True)
src_policy.freshness = 0
src_policy.recalculate()
if not src_policy.ready:
raise Exception(
_('Internal error: required source components not found!'))
root_iface = iface_cache.iface_cache.get_interface(src_policy.root)
impl = src_policy.implementation[root_iface]
min_version = impl.metadata.get(XMLNS_0COMPILE + ' min-version',
our_min_version)
# Check the syntax is valid and the version is high enough
if model.parse_version(min_version) < model.parse_version(
our_min_version):
min_version = our_min_version
# Do the whole build-and-register-feed
c = Command()
c.run(("0launch", '--message',
_('Download the 0compile tool, to compile the source code'),
'--not-before=' + min_version,
"http://0install.net/2006/interfaces/0compile.xml", 'gui',
'--no-prompt', interface.uri), add_feed)
def setUp(self):
www.HTTP_ROOT = '<HTTP_ROOT>'
www.REPO_ROOT = '<REPO_ROOT>'
for name, path in _ENVS.items():
os.environ[name] = os.path.join(_ROOT, path)
if os.path.exists(os.environ['XDG_CACHE_HOME']):
support.ro_rmtree(os.environ['XDG_CACHE_HOME'])
shutil.rmtree(_ROOT, ignore_errors=True)
for name, path in _ENVS.items():
os.makedirs(os.environ[name], mode=0700)
reload(basedir)
assert basedir.xdg_config_home == os.environ['XDG_CONFIG_HOME']
iface_cache.iface_cache.__init__()
download._downloads = {}
logger = logging.getLogger()
for i in logger.handlers:
logger.removeHandler(i)
logging.basicConfig(filename=os.path.join(_ROOT, 'debug.log'),
level=logging.DEBUG)
self.logger = logging.getLogger('test')
policy = Policy('')
policy.network_use = model.network_full
policy.freshness = 60
policy.save_config()
self._child = None
def testNoNeedDl(self):
policy = Policy(foo_iface_uri, config = self.config)
policy.freshness = 0
assert policy.need_download()
policy = Policy(os.path.abspath('Foo.xml'), config = self.config)
assert not policy.need_download()
assert policy.ready
def testNoNeedDl(self):
policy = Policy(foo_iface_uri, config=self.config)
policy.freshness = 0
assert policy.need_download()
policy = Policy(os.path.abspath('Foo.xml'), config=self.config)
assert not policy.need_download()
assert policy.ready
def testBackground(self, verbose=False):
p = Policy('http://example.com:8000/Hello.xml', config=self.config)
self.import_feed(p.root, 'Hello.xml')
p.freshness = 0
p.network_use = model.network_minimal
p.solver.solve(p.root, arch.get_host_architecture())
assert p.ready, p.solver.get_failure_reason()
@tasks. async
def choose_download(registed_cb, nid, actions):
try:
assert actions == ['download', 'Download'], actions
registed_cb(nid, 'download')
except:
import traceback
traceback.print_exc()
yield None
global ran_gui
ran_gui = False
old_out = sys.stdout
try:
sys.stdout = StringIO()
self.child = server.handle_requests('Hello.xml',
'6FCF121BE2390E0B.gpg')
my_dbus.system_services = {
"org.freedesktop.NetworkManager": {
"/org/freedesktop/NetworkManager": NetworkManager()
}
}
my_dbus.user_callback = choose_download
pid = os.getpid()
old_exit = os._exit
def my_exit(code):
# The background handler runs in the same process
# as the tests, so don't let it abort.
if os.getpid() == pid:
raise SystemExit(code)
# But, child download processes are OK
old_exit(code)
from zeroinstall.injector import config
key_info = config.DEFAULT_KEY_LOOKUP_SERVER
config.DEFAULT_KEY_LOOKUP_SERVER = None
try:
try:
os._exit = my_exit
background.spawn_background_update(p, verbose)
assert False
except SystemExit as ex:
self.assertEquals(1, ex.code)
finally:
os._exit = old_exit
config.DEFAULT_KEY_LOOKUP_SERVER = key_info
finally:
sys.stdout = old_out
assert ran_gui
def testConstraints(self):
self.cache_iface('http://bar',
"""<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="http://bar"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Bar</name>
<summary>Bar</summary>
<description>Bar</description>
<implementation id='sha1=100' version='1.0'>
<archive href='foo' size='10'/>
</implementation>
<implementation id='sha1=150' stability='developer' version='1.5'>
<archive href='foo' size='10'/>
</implementation>
<implementation id='sha1=200' version='2.0'>
<archive href='foo' size='10'/>
</implementation>
</interface>""")
self.cache_iface(foo_iface_uri,
"""<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<group main='dummy'>
<requires interface='http://bar'>
<version/>
</requires>
<implementation id='sha1=123' version='1.0'>
<archive href='foo' size='10'/>
</implementation>
</group>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config = self.config)
policy.network_use = model.network_full
policy.freshness = 0
#logger.setLevel(logging.DEBUG)
recalculate(policy)
#logger.setLevel(logging.WARN)
foo_iface = self.config.iface_cache.get_interface(foo_iface_uri)
bar_iface = self.config.iface_cache.get_interface('http://bar')
assert policy.implementation[bar_iface].id == 'sha1=200'
dep = policy.implementation[foo_iface].dependencies['http://bar']
assert len(dep.restrictions) == 1
restriction = dep.restrictions[0]
restriction.before = model.parse_version('2.0')
recalculate(policy)
assert policy.implementation[bar_iface].id == 'sha1=100'
restriction.not_before = model.parse_version('1.5')
recalculate(policy)
assert policy.implementation[bar_iface].id == 'sha1=150'
def testConstraints(self):
self.cache_iface(
'http://bar', """<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="http://bar"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Bar</name>
<summary>Bar</summary>
<description>Bar</description>
<implementation id='sha1=100' version='1.0'>
<archive href='foo' size='10'/>
</implementation>
<implementation id='sha1=150' stability='developer' version='1.5'>
<archive href='foo' size='10'/>
</implementation>
<implementation id='sha1=200' version='2.0'>
<archive href='foo' size='10'/>
</implementation>
</interface>""")
self.cache_iface(
foo_iface_uri, """<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<group main='dummy'>
<requires interface='http://bar'>
<version/>
</requires>
<implementation id='sha1=123' version='1.0'>
<archive href='foo' size='10'/>
</implementation>
</group>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config=self.config)
policy.network_use = model.network_full
policy.freshness = 0
#logger.setLevel(logging.DEBUG)
recalculate(policy)
#logger.setLevel(logging.WARN)
foo_iface = self.config.iface_cache.get_interface(foo_iface_uri)
bar_iface = self.config.iface_cache.get_interface('http://bar')
assert policy.implementation[bar_iface].id == 'sha1=200'
dep = policy.implementation[foo_iface].dependencies['http://bar']
assert len(dep.restrictions) == 1
restriction = dep.restrictions[0]
restriction.before = model.parse_version('2.0')
recalculate(policy)
assert policy.implementation[bar_iface].id == 'sha1=100'
restriction.not_before = model.parse_version('1.5')
recalculate(policy)
assert policy.implementation[bar_iface].id == 'sha1=150'
def testBackground(self, verbose=False):
p = Policy("http://example.com:8000/Hello.xml", config=self.config)
self.import_feed(p.root, "Hello.xml")
p.freshness = 0
p.network_use = model.network_minimal
p.solver.solve(p.root, arch.get_host_architecture())
assert p.ready, p.solver.get_failure_reason()
@tasks.async
def choose_download(registed_cb, nid, actions):
try:
assert actions == ["download", "Download"], actions
registed_cb(nid, "download")
except:
import traceback
traceback.print_exc()
yield None
global ran_gui
ran_gui = False
old_out = sys.stdout
try:
sys.stdout = StringIO()
self.child = server.handle_requests("Hello.xml", "6FCF121BE2390E0B.gpg")
my_dbus.system_services = {
"org.freedesktop.NetworkManager": {"/org/freedesktop/NetworkManager": NetworkManager()}
}
my_dbus.user_callback = choose_download
pid = os.getpid()
old_exit = os._exit
def my_exit(code):
# The background handler runs in the same process
# as the tests, so don't let it abort.
if os.getpid() == pid:
raise SystemExit(code)
# But, child download processes are OK
old_exit(code)
key_info = fetch.DEFAULT_KEY_LOOKUP_SERVER
fetch.DEFAULT_KEY_LOOKUP_SERVER = None
try:
try:
os._exit = my_exit
background.spawn_background_update(p, verbose)
assert False
except SystemExit, ex:
self.assertEquals(1, ex.code)
finally:
os._exit = old_exit
fetch.DEFAULT_KEY_LOOKUP_SERVER = key_info
finally:
sys.stdout = old_out
assert ran_gui
def _check_for_updates(old_policy, verbose):
from zeroinstall.injector.policy import Policy
from zeroinstall.injector.config import load_config
iface_cache = old_policy.config.iface_cache
root_iface = iface_cache.get_interface(old_policy.root).get_name()
background_config = load_config(
BackgroundHandler(root_iface, old_policy.root))
policy = Policy(config=background_config,
requirements=old_policy.requirements)
info(_("Checking for updates to '%s' in a background process"), root_iface)
if verbose:
policy.handler.notify("Zero Install",
_("Checking for updates to '%s'...") %
root_iface,
timeout=1)
network_state = policy.handler.get_network_state()
if network_state != _NetworkState.NM_STATE_CONNECTED:
info(
_("Not yet connected to network (status = %d). Sleeping for a bit..."
), network_state)
import time
time.sleep(120)
if network_state in (_NetworkState.NM_STATE_DISCONNECTED,
_NetworkState.NM_STATE_ASLEEP):
info(_("Still not connected to network. Giving up."))
sys.exit(1)
else:
info(_("NetworkManager says we're on-line. Good!"))
policy.freshness = 0 # Don't bother trying to refresh when getting the interface
refresh = policy.refresh_all() # (causes confusing log messages)
tasks.wait_for_blocker(refresh)
# We could even download the archives here, but for now just
# update the interfaces.
if not policy.need_download():
if verbose:
policy.handler.notify("Zero Install",
_("No updates to download."),
timeout=1)
sys.exit(0)
policy.handler.notify("Zero Install",
_("Updates ready to download for '%s'.") %
root_iface,
timeout=1)
_exec_gui(policy.root, '--refresh', '--systray')
sys.exit(1)
def testNoArchives(self):
self.cache_iface(
foo_iface_uri, """<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<implementation id='sha1=123' version='1.0' main='dummy'/>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config=self.config)
policy.freshness = 0
recalculate(policy)
assert not policy.ready
def testNoArchives(self): self.cache_iface(foo_iface_uri, """<?xml version="1.0" ?> <interface last-modified="1110752708" uri="%s" xmlns="http://zero-install.sourceforge.net/2004/injector/interface"> <name>Foo</name> <summary>Foo</summary> <description>Foo</description> <implementation id='sha1=123' version='1.0' main='dummy'/> </interface>""" % foo_iface_uri) policy = Policy(foo_iface_uri, config = self.config) policy.freshness = 0 recalculate(policy) assert not policy.ready
def testCycle(self):
self.cache_iface(foo_iface_uri,
"""<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<group>
<requires interface='%s'/>
<implementation id='sha1=123' version='1.0'>
<archive href='foo' size='10'/>
</implementation>
</group>
</interface>""" % (foo_iface_uri, foo_iface_uri))
policy = Policy(foo_iface_uri, config = self.config)
policy.freshness = 0
recalculate(policy)
def testCycle(self):
self.cache_iface(
foo_iface_uri, """<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<group>
<requires interface='%s'/>
<implementation id='sha1=123' version='1.0'>
<archive href='foo' size='10'/>
</implementation>
</group>
</interface>""" % (foo_iface_uri, foo_iface_uri))
policy = Policy(foo_iface_uri, config=self.config)
policy.freshness = 0
recalculate(policy)
def _check_for_updates(old_policy, verbose):
from zeroinstall.injector.policy import Policy
from zeroinstall.injector.config import load_config
iface_cache = old_policy.config.iface_cache
root_iface = iface_cache.get_interface(old_policy.root).get_name()
background_config = load_config(BackgroundHandler(root_iface, old_policy.root))
policy = Policy(config = background_config, requirements = old_policy.requirements)
info(_("Checking for updates to '%s' in a background process"), root_iface)
if verbose:
policy.handler.notify("Zero Install", _("Checking for updates to '%s'...") % root_iface, timeout = 1)
network_state = policy.handler.get_network_state()
if network_state != _NetworkState.NM_STATE_CONNECTED:
info(_("Not yet connected to network (status = %d). Sleeping for a bit..."), network_state)
import time
time.sleep(120)
if network_state in (_NetworkState.NM_STATE_DISCONNECTED, _NetworkState.NM_STATE_ASLEEP):
info(_("Still not connected to network. Giving up."))
sys.exit(1)
else:
info(_("NetworkManager says we're on-line. Good!"))
policy.freshness = 0 # Don't bother trying to refresh when getting the interface
refresh = policy.refresh_all() # (causes confusing log messages)
tasks.wait_for_blocker(refresh)
# We could even download the archives here, but for now just
# update the interfaces.
if not policy.need_download():
if verbose:
policy.handler.notify("Zero Install", _("No updates to download."), timeout = 1)
sys.exit(0)
policy.handler.notify("Zero Install",
_("Updates ready to download for '%s'.") % root_iface,
timeout = 1)
_exec_gui(policy.root, '--refresh', '--systray')
sys.exit(1)
def testNeedDL(self):
self.cache_iface(foo_iface_uri,
"""<?xml version="1.0" ?>
<interface last-modified="0"
uri="%s"
main='ThisBetterNotExist'
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<implementation version='1.0' id='sha1=123'>
<archive href='http://foo/foo.tgz' size='100'/>
</implementation>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config = self.config)
policy.freshness = 0
policy.network_use = model.network_full
recalculate(policy)
assert policy.need_download()
assert policy.ready
def testNeedDL(self):
self.cache_iface(
foo_iface_uri, """<?xml version="1.0" ?>
<interface last-modified="0"
uri="%s"
main='ThisBetterNotExist'
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<implementation version='1.0' id='sha1=123'>
<archive href='http://foo/foo.tgz' size='100'/>
</implementation>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config=self.config)
policy.freshness = 0
policy.network_use = model.network_full
recalculate(policy)
assert policy.need_download()
assert policy.ready
def testUnknownAlg(self):
self.cache_iface(foo_iface_uri,
"""<?xml version="1.0" ?>
<interface
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<implementation main='.' id='unknown=123' version='1.0'>
<archive href='http://foo/foo.tgz' size='100'/>
</implementation>
</interface>""" % foo_iface_uri)
self.config.fetcher = fetch.Fetcher(self.config)
policy = Policy(foo_iface_uri, config = self.config)
policy.freshness = 0
try:
assert policy.need_download()
download_and_execute(policy, [])
except model.SafeException as ex:
assert 'Unknown digest algorithm' in str(ex)
def testUnknownAlg(self):
self.cache_iface(
foo_iface_uri, """<?xml version="1.0" ?>
<interface
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<implementation main='.' id='unknown=123' version='1.0'>
<archive href='http://foo/foo.tgz' size='100'/>
</implementation>
</interface>""" % foo_iface_uri)
self.config.fetcher = fetch.Fetcher(self.config)
policy = Policy(foo_iface_uri, config=self.config)
policy.freshness = 0
try:
assert policy.need_download()
download_and_execute(policy, [])
except model.SafeException as ex:
assert 'Unknown digest algorithm' in str(ex)
def testDLfeed(self):
self.cache_iface(
foo_iface_uri, """<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<feed src='http://example.com'/>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config=self.config)
policy.network_use = model.network_full
policy.freshness = 0
assert policy.need_download()
feed = self.config.iface_cache.get_feed(foo_iface_uri)
feed.feeds = [model.Feed('/BadFeed', None, False)]
logger.setLevel(logging.ERROR)
assert policy.need_download() # Triggers warning
logger.setLevel(logging.WARN)
def testDLfeed(self):
self.cache_iface(foo_iface_uri,
"""<?xml version="1.0" ?>
<interface last-modified="1110752708"
uri="%s"
xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
<name>Foo</name>
<summary>Foo</summary>
<description>Foo</description>
<feed src='http://example.com'/>
</interface>""" % foo_iface_uri)
policy = Policy(foo_iface_uri, config = self.config)
policy.network_use = model.network_full
policy.freshness = 0
assert policy.need_download()
feed = self.config.iface_cache.get_feed(foo_iface_uri)
feed.feeds = [model.Feed('/BadFeed', None, False)]
logger.setLevel(logging.ERROR)
assert policy.need_download() # Triggers warning
logger.setLevel(logging.WARN)
def testSource(self):
iface_cache = self.config.iface_cache
warnings.filterwarnings("ignore", category=DeprecationWarning)
foo = iface_cache.get_interface("http://foo/Binary.xml")
self.import_feed(foo.uri, "Binary.xml")
foo_src = iface_cache.get_interface("http://foo/Source.xml")
self.import_feed(foo_src.uri, "Source.xml")
compiler = iface_cache.get_interface("http://foo/Compiler.xml")
self.import_feed(compiler.uri, "Compiler.xml")
p = Policy("http://foo/Binary.xml", config=self.config)
p.freshness = 0
p.network_use = model.network_full
p.recalculate() # Deprecated
assert p.implementation[foo].id == "sha1=123"
# Now ask for source instead
p.requirements.source = True
p.requirements.command = "compile"
p.recalculate()
assert p.solver.ready, p.solver.get_failure_reason()
assert p.implementation[foo].id == "sha1=234" # The source
assert p.implementation[compiler].id == "sha1=345" # A binary needed to compile it
def _check_for_updates(old_policy, verbose):
from zeroinstall.injector.policy import load_config, Policy
iface_cache = old_policy.config.iface_cache
root_iface = iface_cache.get_interface(old_policy.root).get_name()
background_config = load_config(BackgroundHandler(root_iface, old_policy.root))
policy = Policy(config = background_config, requirements = old_policy.requirements)
info(_("Checking for updates to '%s' in a background process"), root_iface)
if verbose:
policy.handler.notify("Zero Install", _("Checking for updates to '%s'...") % root_iface, timeout = 1)
network_state = policy.handler.get_network_state()
if network_state != _NetworkState.NM_STATE_CONNECTED:
info(_("Not yet connected to network (status = %d). Sleeping for a bit..."), network_state)
import time
time.sleep(120)
if network_state in (_NetworkState.NM_STATE_DISCONNECTED, _NetworkState.NM_STATE_ASLEEP):
info(_("Still not connected to network. Giving up."))
sys.exit(1)
else:
info(_("NetworkManager says we're on-line. Good!"))
policy.freshness = 0 # Don't bother trying to refresh when getting the interface
refresh = policy.refresh_all() # (causes confusing log messages)
policy.handler.wait_for_blocker(refresh)
# We could even download the archives here, but for now just
# update the interfaces.
if not policy.need_download():
if verbose:
policy.handler.notify("Zero Install", _("No updates to download."), timeout = 1)
sys.exit(0)
if not policy.handler.have_actions_support():
# Can't ask the user to choose, so just notify them
# In particular, Ubuntu/Jaunty doesn't support actions
policy.handler.notify("Zero Install",
_("Updates ready to download for '%s'.") % root_iface,
timeout = 1)
_exec_gui(policy.root, '--refresh', '--systray')
sys.exit(1)
notification_closed = tasks.Blocker("wait for notification response")
def _NotificationClosed(nid, *unused):
if nid != our_question: return
notification_closed.trigger()
def _ActionInvoked(nid, action):
if nid != our_question: return
if action == 'download':
_exec_gui(policy.root)
notification_closed.trigger()
policy.handler.notification_service.connect_to_signal('NotificationClosed', _NotificationClosed)
policy.handler.notification_service.connect_to_signal('ActionInvoked', _ActionInvoked)
our_question = policy.handler.notify("Zero Install", _("Updates ready to download for '%s'.") % root_iface,
actions = ['download', 'Download'])
policy.handler.wait_for_blocker(notification_closed)
