Initial commit moving openolt adapter from voltha-go to the new repo.
This version works with ponsim rather than openolt, this is temporary.
It is currently being fixed to work with openolt.
Change-Id: I34a800c98f050140b367e2d474b7aa8b79f34b9a
Signed-off-by: William Kurkian <wkurkian@cisco.com>
diff --git a/python/adapters/extensions/omci/tasks/mib_upload.py b/python/adapters/extensions/omci/tasks/mib_upload.py
new file mode 100644
index 0000000..4afd234
--- /dev/null
+++ b/python/adapters/extensions/omci/tasks/mib_upload.py
@@ -0,0 +1,158 @@
+#
+# Copyright 2017 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 twisted.internet.defer import inlineCallbacks, TimeoutError, failure, AlreadyCalledError
+from twisted.internet import reactor
+from voltha.extensions.omci.omci_defs import ReasonCodes
+
+
+class MibUploadFailure(Exception):
+ """
+ This error is raised by default when the upload fails
+ """
+
+
+class MibUploadTask(Task):
+ """
+ OpenOMCI MIB upload task
+
+ On successful completion, this task will call the 'callback' method of the
+ deferred returned by the start method. Only a textual message is provided as
+ the successful results and it lists the number of ME entities successfully
+ retrieved.
+
+ Note that the MIB Synchronization State Machine will get event subscription
+ information for the MIB Reset and MIB Upload Next requests and it is the
+ MIB Synchronization State Machine that actually populates the MIB Database.
+ """
+ task_priority = 250
+ name = "MIB Upload Task"
+
+ def __init__(self, omci_agent, device_id):
+ """
+ Class initialization
+
+ :param omci_agent: (OmciAdapterAgent) OMCI Adapter agent
+ :param device_id: (str) ONU Device ID
+ """
+ super(MibUploadTask, self).__init__(MibUploadTask.name,
+ omci_agent,
+ device_id,
+ priority=MibUploadTask.task_priority)
+ self._local_deferred = None
+
+ def cancel_deferred(self):
+ super(MibUploadTask, 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 MIB Synchronization tasks
+ """
+ super(MibUploadTask, self).start()
+ self._local_deferred = reactor.callLater(0, self.perform_mib_upload)
+
+ def stop(self):
+ """
+ Shutdown MIB Synchronization tasks
+ """
+ self.log.debug('stopping')
+
+ self.cancel_deferred()
+ super(MibUploadTask, self).stop()
+
+ @inlineCallbacks
+ def perform_mib_upload(self):
+ """
+ Perform the MIB Upload sequence
+ """
+ self.log.debug('perform-mib-upload')
+
+ seq_no = 0
+ number_of_commands = 0
+
+ try:
+ device = self.omci_agent.get_device(self.device_id)
+
+ #########################################
+ # MIB Reset
+ self.strobe_watchdog()
+ results = yield device.omci_cc.send_mib_reset()
+
+ status = results.fields['omci_message'].fields['success_code']
+ if status != ReasonCodes.Success.value:
+ raise MibUploadFailure('MIB Reset request failed with status code: {}'.
+ format(status))
+
+ ########################################
+ # Begin MIB Upload
+ self.strobe_watchdog()
+ results = yield device.omci_cc.send_mib_upload()
+
+ number_of_commands = results.fields['omci_message'].fields['number_of_commands']
+
+ for seq_no in xrange(number_of_commands):
+ if not device.active or not device.omci_cc.enabled:
+ raise MibUploadFailure('OMCI and/or ONU is not active')
+
+ for retry in range(0, 3):
+ try:
+ self.log.debug('mib-upload-next-request', seq_no=seq_no,
+ retry=retry,
+ number_of_commands=number_of_commands)
+ self.strobe_watchdog()
+ yield device.omci_cc.send_mib_upload_next(seq_no)
+
+ self.log.debug('mib-upload-next-success', seq_no=seq_no,
+ number_of_commands=number_of_commands)
+ break
+
+ except TimeoutError as e:
+ from common.utils.asleep import asleep
+ self.log.warn('mib-upload-timeout', e=e, seq_no=seq_no,
+ number_of_commands=number_of_commands)
+ if retry >= 2:
+ raise MibUploadFailure('Upload timeout failure on req {} of {}'.
+ format(seq_no + 1, number_of_commands))
+ self.strobe_watchdog()
+ yield asleep(0.3)
+
+ # Successful if here
+ self.log.info('mib-synchronized')
+ self.deferred.callback('success, loaded {} ME Instances'.
+ format(number_of_commands))
+
+ except TimeoutError as e:
+ self.log.warn('mib-upload-timeout-on-reset', e=e, seq_no=seq_no,
+ number_of_commands=number_of_commands)
+ self.deferred.errback(failure.Failure(e))
+
+ except AlreadyCalledError:
+ # Can occur if task canceled due to MIB Sync state change
+ self.log.debug('already-called-exception', seq_no=seq_no,
+ number_of_commands=number_of_commands)
+ assert self.deferred.called, \
+ 'Unexpected AlreadyCalledError exception: seq: {} of {}'.format(seq_no,
+ number_of_commands)
+ except Exception as e:
+ self.log.exception('mib-upload', e=e)
+ self.deferred.errback(failure.Failure(e))