# ============LICENSE_START===================================================
-# Copyright (C) 2020 Nordix Foundation.
+# Copyright (C) 2020-2021 Nordix Foundation.
# ============================================================================
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
#
# SPDX-License-Identifier: Apache-2.0
# ============LICENSE_END=====================================================
+from jsonschema import ValidationError
-import mod.aai_client as aai
-from mod import logger
+from mod import logger, aai_client
+from mod.network_function import NetworkFunctionFilter
from mod.subscription import AdministrativeState
class SubscriptionHandler:
- def __init__(self, mr_pub, app, app_conf, aai_event_thread, policy_event_thread):
+ def __init__(self, mr_pub, aai_sub, app, app_conf):
self.mr_pub = mr_pub
+ self.aai_sub = aai_sub
self.app = app
self.app_conf = app_conf
- self.aai_event_thread = aai_event_thread
- self.policy_event_thread = policy_event_thread
+ self.aai_event_thread = None
def execute(self):
"""
the Subscription if a change has occurred
"""
self.app.app_context().push()
- local_admin_state = self.app_conf.subscription.get_local_sub_admin_state()
- new_administrative_state = self.app_conf.subscription.administrativeState
try:
- if local_admin_state == new_administrative_state:
- logger.info('Administrative State did not change in the Config')
+ local_admin_state = self.app_conf.subscription.get_local_sub_admin_state()
+ if local_admin_state == AdministrativeState.LOCKING.value:
+ self._check_for_failed_nfs()
else:
- if new_administrative_state == AdministrativeState.UNLOCKED.value:
- self._activate(local_admin_state, new_administrative_state)
- elif local_admin_state == AdministrativeState.PENDING.value:
- logger.info('Administrative State is PENDING')
+ self.app_conf.refresh_config()
+ self.app_conf.validate_sub_schema()
+ new_administrative_state = self.app_conf.subscription.administrativeState
+ if local_admin_state == new_administrative_state:
+ logger.info(f'Administrative State did not change in the app config: '
+ f'{new_administrative_state}')
else:
- self._deactivate(local_admin_state, new_administrative_state)
+ self._check_state_change(local_admin_state, new_administrative_state)
+ except (ValidationError, TypeError) as err:
+ logger.error(f'Error occurred during validation of subscription schema {err}',
+ exc_info=True)
except Exception as err:
logger.error(f'Error occurred during the activation/deactivation process {err}',
exc_info=True)
- def _activate(self, local_admin_state, new_administrative_state):
- logger.info(f'Administrative State has changed from {local_admin_state} '
- f'to {new_administrative_state}.')
- existing_nfs_in_aai = aai.get_pmsh_nfs_from_aai(self.app_conf)
- self.app_conf.subscription.activate_subscription(existing_nfs_in_aai, self.mr_pub,
- self.app_conf)
- self.app_conf.subscription.update_subscription_status()
- logger.info('Start listening for new NFs on AAI-EVENT topic in MR.')
- self.aai_event_thread.start()
- self.policy_event_thread.start()
+ def _check_state_change(self, local_admin_state, new_administrative_state):
+ if new_administrative_state == AdministrativeState.UNLOCKED.value:
+ logger.info(f'Administrative State has changed from {local_admin_state} '
+ f'to {new_administrative_state}.')
+ self._activate(new_administrative_state)
+ elif new_administrative_state == AdministrativeState.LOCKED.value:
+ logger.info(f'Administrative State has changed from {local_admin_state} '
+ f'to {new_administrative_state}.')
+ self._deactivate()
+ else:
+ raise Exception(f'Invalid AdministrativeState: {new_administrative_state}')
- def _deactivate(self, local_admin_state, new_administrative_state):
- logger.info(f'Administrative State has changed from {local_admin_state} '
- f'to {new_administrative_state}.')
- self.aai_event_thread.cancel()
- logger.info('Stop listening for NFs on AAI-EVENT topic in MR.')
- self.app_conf.subscription.deactivate_subscription(self.mr_pub, self.app_conf)
+ def _activate(self, new_administrative_state):
+ if not self.app_conf.nf_filter:
+ self.app_conf.nf_filter = NetworkFunctionFilter(**self.app_conf.subscription.nfFilter)
+ self.app_conf.subscription.update_sub_params(new_administrative_state,
+ self.app_conf.subscription.fileBasedGP,
+ self.app_conf.subscription.fileLocation,
+ self.app_conf.subscription.measurementGroups)
+ nfs_in_aai = aai_client.get_pmsh_nfs_from_aai(self.app_conf, self.app_conf.nf_filter)
+ self.app_conf.subscription.create_subscription_on_nfs(nfs_in_aai, self.mr_pub)
self.app_conf.subscription.update_subscription_status()
+
+ def _deactivate(self):
+ nfs = self.app_conf.subscription.get_network_functions()
+ if nfs:
+ self.stop_aai_event_thread()
+ self.app_conf.subscription.administrativeState = AdministrativeState.LOCKING.value
+ logger.info('Subscription is now LOCKING/DEACTIVATING.')
+ self.app_conf.subscription.delete_subscription_from_nfs(nfs, self.mr_pub)
+ self.app_conf.subscription.update_subscription_status()
+
+ def stop_aai_event_thread(self):
+ if self.aai_event_thread is not None:
+ self.aai_event_thread.cancel()
+ self.aai_event_thread = None
+ logger.info('Stopping polling for NFs events on AAI-EVENT topic in MR.')
+
+ def _check_for_failed_nfs(self):
+ logger.info('Checking for DELETE_FAILED NFs before LOCKING Subscription.')
+ del_failed_nfs = self.app_conf.subscription.get_delete_failed_nfs()
+ if del_failed_nfs or self.app_conf.subscription.get_delete_pending_nfs():
+ for nf in del_failed_nfs:
+ nf_model = nf.get(nf.nf_name)
+ if nf_model.retry_count < 3:
+ logger.info(f'Retry deletion of subscription '
+ f'{self.app_conf.subscription.subscriptionName} '
+ f'from NF: {nf.nf_name}')
+ self.app_conf.subscription.delete_subscription_from_nfs([nf], self.mr_pub)
+ nf.increment_retry_count()
+ else:
+ logger.error(f'Failed to delete the subscription '
+ f'{self.app_conf.subscription.subscriptionName} '
+ f'from NF: {nf.nf_name} after {nf_model.retry_count} '
+ f'attempts. Removing NF from DB')
+ nf.delete(nf_name=nf.nf_name)
+ else:
+ logger.info('Proceeding to LOCKED adminState.')
+ self.app_conf.subscription.administrativeState = AdministrativeState.LOCKED.value
+ self.app_conf.subscription.update_subscription_status()
Code Review / dcaegen2 / services.git / blobdiff