def _call_shared(self, func):
"""
Execute the given function at func after acquiring Entropy
Resources Lock in shared mode, for given repository at repo.
The signature of func is: int func(entropy_client).
"""
client_class = None
client = None
acquired = False
lock = None
try:
try:
client_class = self._entropy_class()
except PermissionDenied as err:
print_error(err.value)
return 1
lock = EntropyResourcesLock(output=client_class)
lock.acquire_shared()
acquired = True
client = client_class()
return func(client)
finally:
if client is not None:
client.shutdown()
if acquired:
lock.release()
def _upgrade_respawn(self, entropy_client, inst_repo):
"""
Respawn the upgrade activity if required.
"""
# It might be an Entropy bug and Entropy was proritized in the
# install queue, ignoring the rest of available packages.
# So, respawning myself again using execvp() should be a much
# better idea.
with inst_repo.shared():
outcome = entropy_client.calculate_updates()
if outcome['update']:
entropy_client.output("%s." % (purple(
_("There are more updates to install, "
"reloading Entropy")), ),
header=teal(" @@ "))
# then spawn a new process
entropy_client.shutdown()
# hack to tell the resurrected equo to block on
# locking acquisition
os.environ['__EQUO_LOCKS_BLOCKING__'] = "1"
# we will acquire them again in blocking mode, cross
# fingers
lock = EntropyResourcesLock(output=entropy_client)
lock.release()
os.execvp("equo", sys.argv)
def acquire(self):
"""
Overridden from BaseBinaryResourceLock.
"""
lock = EntropyResourcesLock(output=Server)
if self._blocking:
lock.acquire_exclusive()
acquired = True
else:
acquired = lock.wait_exclusive()
if not acquired:
raise EntropyResourceLock.NotAcquired("unable to acquire lock")
def _call_shared(self, func, repo):
"""
Execute the given function at func after acquiring Entropy
Resources Lock in shared mode, for given repository at repo.
The signature of func is: int func(entropy_server).
"""
server = None
server_class = None
acquired = False
lock = None
# make possible to avoid dealing with the resources lock.
# This is useful if the lock is already acquired by some
# parent or controller process.
skip_lock = os.getenv("EIT_NO_RESOURCES_LOCK") is not None
try:
try:
server_class = self._entropy_class()
except PermissionDenied as err:
print_error(err.value)
return 1
if not skip_lock:
lock = EntropyResourcesLock(output=server_class)
lock.acquire_shared()
acquired = True
if not acquired:
server_class.output(darkgreen(
_("Another Entropy is currently running.")),
level="error",
importance=1)
return 1
server = server_class(default_repository=repo)
# make sure that repositories are closed now
# to reset their internal states, which could have
# become stale.
# We cannot do this inside the API because we don't
# know the lifecycle of EntropyRepository objects there.
server.close_repositories()
ServerRepositoryStatus().reset()
return func(server)
finally:
if server is not None:
server.shutdown()
if acquired:
lock.release()
def _call_exclusive(self, func):
"""
Execute the given function at func after acquiring Entropy
Resources Lock, for given repository at repo.
The signature of func is: int func(entropy_client).
"""
client_class = None
client = None
acquired = False
lock = None
try:
try:
client_class = self._entropy_class()
except PermissionDenied as err:
print_error(err.value)
return 1
blocking = os.getenv("__EQUO_LOCKS_BLOCKING__")
if blocking:
client_class.output(darkgreen(
_("Acquiring Entropy Resources "
"Lock, please wait...")),
back=True)
lock = EntropyResourcesLock(output=client_class)
if blocking:
lock.acquire_exclusive()
acquired = True
else:
acquired = lock.wait_exclusive()
if not acquired:
client_class.output(darkgreen(
_("Another Entropy is currently running.")),
level="error",
importance=1)
return 1
client = client_class()
return func(client)
finally:
if client is not None:
client.shutdown()
if acquired:
lock.release()
def _permissions_setup(self):
"""
Check execution privileges and spawn the Rigo UI.
"""
if not entropy.tools.is_user_in_entropy_group():
# otherwise the lock handling would potentially
# fail.
self._show_ok_dialog(
None, escape_markup(_("Not authorized")),
escape_markup(_("You are not authorized to run Rigo")))
entropy.tools.kill_threads()
Gtk.main_quit()
return
if not self._service.service_available():
self._show_ok_dialog(
None, escape_markup(_("Rigo")),
escape_markup(_("RigoDaemon service is not available")))
entropy.tools.kill_threads()
Gtk.main_quit()
return
supported_apis = self._service.supported_apis()
daemon_api = self._service.api()
if daemon_api not in supported_apis:
self._show_ok_dialog(
None, escape_markup(_("Rigo")),
escape_markup(
_("API mismatch, please update Rigo and RigoDaemon")))
entropy.tools.kill_threads()
Gtk.main_quit()
return
lock = EntropyResourcesLock(output=self._entropy)
# always execute this from the MainThread, since the lock uses TLS
acquired = lock.try_acquire_shared()
is_exclusive = False
if not acquired:
# check whether RigoDaemon is running in excluive mode
# and ignore non-atomicity here (failing with error
# is acceptable)
if not self._service.exclusive():
self._show_ok_dialog(
None, escape_markup(_("Rigo")),
escape_markup(_("Another Application Manager is active")))
entropy.tools.kill_threads()
Gtk.main_quit()
return
is_exclusive = True
# otherwise we can go ahead and handle our state later
# check RigoDaemon, don't worry about races between Rigo Clients
# it is fine to have multiple Rigo Clients connected. Mutual
# exclusion is handled via Entropy Resources Lock (which is a file
# based rwsem).
activity = self._service.activity()
if activity != DaemonActivityStates.AVAILABLE:
msg = ""
show_dialog = True
if activity == DaemonActivityStates.NOT_AVAILABLE:
msg = _("Background Service is currently not available")
elif activity == DaemonActivityStates.UPDATING_REPOSITORIES:
show_dialog = False
task = ParallelTask(self._service._update_repositories, [],
False,
master=False)
task.daemon = True
task.name = "UpdateRepositoriesUnlocked"
task.start()
elif activity == DaemonActivityStates.MANAGING_APPLICATIONS:
show_dialog = False
task = ParallelTask(self._service._application_request,
None,
None,
master=False)
task.daemon = True
task.name = "ApplicationRequestUnlocked"
task.start()
elif activity == DaemonActivityStates.UPGRADING_SYSTEM:
show_dialog = False
task = ParallelTask(self._service._upgrade_system,
False,
master=False)
task.daemon = True
task.name = "UpgradeSystemUnlocked"
task.start()
elif activity == DaemonActivityStates.INTERNAL_ROUTINES:
msg = _("Background Service is currently busy")
else:
msg = _("Background Service is incompatible with Rigo")
if show_dialog:
self._show_ok_dialog(None, escape_markup(_("Rigo")),
escape_markup(msg))
entropy.tools.kill_threads()
Gtk.main_quit()
return
elif is_exclusive:
msg = _("Background Service is currently unavailable")
# no lock acquired, cannot continue the initialization
self._show_ok_dialog(None, escape_markup(_("Rigo")),
escape_markup(msg))
entropy.tools.kill_threads()
Gtk.main_quit()
return
parser = argparse.ArgumentParser(
description=_("Rigo Application Browser"))
parser.add_argument("package",
nargs='?',
type=file,
metavar="<path>",
help="package path")
parser.add_argument("--install",
metavar="<dep string>",
help="install given dependency")
parser.add_argument("--remove",
metavar="<dep string>",
help="remove given dependency")
parser.add_argument("--upgrade",
help="upgrade the system",
action="store_true",
default=False)
parser.add_argument("--dumper",
help="enable the main thread dumper (debug)",
action="store_true",
default=False)
parser.add_argument("--debug",
help="enable Entropy Library debug mode",
action="store_true",
default=False)
try:
self._nsargs = parser.parse_args(sys.argv[1:])
except IOError as err:
self._show_ok_dialog(None, escape_markup(_("Rigo")),
escape_markup("%s" % (err, )))
entropy.tools.kill_threads()
Gtk.main_quit()
return
self._thread_dumper()
self._pref_view_c.setup()
self._group_view_c.setup()
self._config_view_c.setup()
self._repo_view_c.setup()
self._notice_view_c.setup()
self._app_view_c.setup()
self._avc.setup()
self._nc.setup()
self._work_view_c.setup()
self._service.setup(acquired)
self._easter_eggs()
self._window.show()
managing = self._start_managing()
if not managing:
self._change_view_state(RigoViewStates.GROUPS_VIEW_STATE)
self._service.hello()
def release(self):
"""
Overridden from BaseBinaryResourceLock.
"""
lock = EntropyResourcesLock(output=Server)
lock.release()
