def __init__(self, parent, name, type_name, directory, settings,
*args, **kwargs):
"""The DBUS_INTERFACE_ROLE_INSTANCE implementation.
:param parent: The DBusRole Object this is attached to
:param name: Instance name
:param type_name: Role name
:param directory: FIXME: unused???
:param settings: RoleSettings for the role
:param path: (Implicit in *args) FIXME: unused???
"""
super(RoleBase, self).__init__(*args, **kwargs)
self._path = args[0]
self._parent = parent
self._name = name
self._escaped_name = dbus_label_escape(name)
self._type = type_name
self._escaped_type = dbus_label_escape(type_name)
self._log_prefix = "role.%s.%s" % (self._escaped_type,
self._escaped_name)
self._directory = directory
self._settings = settings
# TODO: place target_unit in settings
self.target_unit = "role-%s-%s.target" % (self._type, self.get_name())
# No loaded self._settings, set state to NASCENT
if not "state" in self._settings:
self._settings["state"] = NASCENT
# Check role instance state if role instance is in READY_TO_START or
# RUNNING state
if self._settings["state"] in [ READY_TO_START, RUNNING ]:
try:
state = target_unit_state(self.target_unit)
except Exception as e:
log.error("Getting information about the unit target failed: %s", e)
else:
# Update state:
#
# Old instance | systemd unit | New instance
# state | target state | state
# ----------------+--------------+----------------
# RUNNING | inactive | READY_TO_START
# READY_TO_START | active | RUNNING
if state == "inactive" and self._settings["state"] == RUNNING:
log.warning("'%s' is inactive, moving to %s state.",
self.target_unit, READY_TO_START)
self.change_state(READY_TO_START, write=True)
elif state == "active" and \
self._settings["state"] == READY_TO_START:
log.warning("'%s' is active, moving to %s state.",
self.target_unit, RUNNING)
self.change_state(RUNNING, write=True)
self.timeout_restart()
def cleanup_targets(self):
# remove created target units
if "target_unit" not in self._settings:
return
try:
os.unlink(os.path.join(SYSTEMD_UNITS,
self._settings['target_unit']))
except Exception as e:
log.warning(
"Couldn't remove unit '{}': {!s}\n".format(
self._settings['target_unit'], e))
else:
log.debug9("Removed unit '{}'\n".format(self._settings['target_unit']))
# tell systemd about it
with SystemdJobHandler() as job_handler:
job_handler.manager.Reload()
def cleanup_targets(self):
# remove created target units
if "target_unit" not in self._settings:
return
try:
os.unlink(
os.path.join(SYSTEMD_UNITS, self._settings['target_unit']))
except Exception as e:
log.warning("Couldn't remove unit '{}': {!s}\n".format(
self._settings['target_unit'], e))
else:
log.debug9("Removed unit '{}'\n".format(
self._settings['target_unit']))
# tell systemd about it
with SystemdJobHandler() as job_handler:
job_handler.manager.Reload()
