VOL-1395: Common shared libraries needed for Python based device adapters.
This is an initial check-in of code from the master branch. Additional work
is expected on a few items to work with the new go-core and will be covered
by separate JIRAs and commits.
Change-Id: I0856ec6b79b8d3e49082c609eb9c7eedd75b1708
diff --git a/python/adapters/extensions/omci/tasks/reboot_task.py b/python/adapters/extensions/omci/tasks/reboot_task.py
new file mode 100644
index 0000000..316e23b
--- /dev/null
+++ b/python/adapters/extensions/omci/tasks/reboot_task.py
@@ -0,0 +1,125 @@
+#
+# Copyright 2018 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+from task import Task
+from enum import IntEnum
+from twisted.internet import reactor
+from twisted.internet.defer import inlineCallbacks, failure, TimeoutError
+from voltha.extensions.omci.omci_defs import ReasonCodes, EntityOperations
+from voltha.extensions.omci.omci_me import OntGFrame
+from voltha.extensions.omci.omci_cc import DEFAULT_OMCI_TIMEOUT
+
+RC = ReasonCodes
+OP = EntityOperations
+
+
+class RebootException(Exception):
+ pass
+
+
+class DeviceBusy(Exception):
+ pass
+
+
+class RebootFlags(IntEnum):
+ Reboot_Unconditionally = 0,
+ Reboot_If_No_POTS_VoIP_In_Progress = 1,
+ Reboot_If_No_Emergency_Call_In_Progress = 2
+
+
+class OmciRebootRequest(Task):
+ """
+ OpenOMCI routine to request reboot of an ONU
+ """
+ task_priority = Task.MAX_PRIORITY
+ name = "ONU OMCI Reboot Task"
+ # adopt the global default
+ DEFAULT_REBOOT_TIMEOUT = DEFAULT_OMCI_TIMEOUT
+
+ def __init__(self, omci_agent, device_id,
+ flags=RebootFlags.Reboot_Unconditionally,
+ timeout=DEFAULT_REBOOT_TIMEOUT):
+ """
+ Class initialization
+
+ :param omci_agent: (OmciAdapterAgent) OMCI Adapter agent
+ :param flags: (RebootFlags) Reboot condition
+ """
+ super(OmciRebootRequest, self).__init__(OmciRebootRequest.name,
+ omci_agent,
+ device_id,
+ priority=OmciRebootRequest.task_priority,
+ exclusive=True)
+ self._device = omci_agent.get_device(device_id)
+ self._flags = flags
+ self._timeout = timeout
+ self._local_deferred = None
+
+ def cancel_deferred(self):
+ super(OmciRebootRequest, self).cancel_deferred()
+
+ d, self._local_deferred = self._local_deferred, None
+ try:
+ if d is not None and not d.called:
+ d.cancel()
+ except:
+ pass
+
+ def start(self):
+ """ Start task """
+ super(OmciRebootRequest, self).start()
+ self._local_deferred = reactor.callLater(0, self.perform_reboot)
+
+ @inlineCallbacks
+ def perform_reboot(self):
+ """
+ Perform the reboot requests
+
+ Depending on the ONU implementation, a response may not be returned. For this
+ reason, a timeout is considered successful.
+ """
+ self.log.info('perform-reboot')
+
+ try:
+ frame = OntGFrame().reboot(reboot_code=self._flags)
+ self.strobe_watchdog()
+ results = yield self._device.omci_cc.send(frame, timeout=self._timeout)
+
+ status = results.fields['omci_message'].fields['success_code']
+ self.log.debug('reboot-status', status=status)
+
+ # Did it fail
+ if status != RC.Success.value:
+ if self._flags != RebootFlags.Reboot_Unconditionally and\
+ status == RC.DeviceBusy.value:
+ raise DeviceBusy('ONU is busy, try again later')
+ else:
+ msg = 'Reboot request failed with status {}'.format(status)
+ raise RebootException(msg)
+
+ self.log.info('reboot-success')
+ self.deferred.callback(self)
+
+ except TimeoutError:
+ self.log.info('timeout', msg='Request timeout is not considered an error')
+ self.deferred.callback(None)
+
+ except DeviceBusy as e:
+ self.log.warn('perform-reboot', msg=e)
+ self.deferred.errback(failure.Failure(e))
+
+ except Exception as e:
+ self.log.exception('perform-reboot', e=e)
+ self.deferred.errback(failure.Failure(e))