98 lines
3.8 KiB
Python
98 lines
3.8 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from gbpservice.nfp.common import constants as nfp_constants
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from gbpservice.nfp.core import log as nfp_logging
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from gbpservice.nfp.core import module as nfp_api
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from gbpservice.nfp.lib import transport as transport
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from gbpservice.nfp.proxy_agent.lib import topics as a_topics
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from neutron_lib import context as n_context
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import sys
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import traceback
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LOG = nfp_logging.getLogger(__name__)
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ResourceMap = {
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'device_orch': a_topics.DEVICE_ORCH_TOPIC,
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'service_orch': a_topics.SERVICE_ORCH_TOPIC,
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'nas_service': a_topics.CONFIG_ORCH_TOPIC
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}
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"""Periodic Class to pull notification from configurator"""
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class PullNotification(nfp_api.NfpEventHandler):
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def __init__(self, sc, conf):
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self._sc = sc
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self._conf = conf
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def handle_event(self, ev):
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self._sc.poll_event(ev)
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def _method_handler(self, notification):
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# Method handles notification as per resource, resource_type and method
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try:
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requester = notification['info']['context']['requester']
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if requester in ResourceMap:
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topic = ResourceMap[requester]
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context = notification['info']['context']['neutron_context']
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rpc_ctx = n_context.Context.from_dict(context)
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else:
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topic = requester.lower() + '_notifications'
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rpc_ctx = n_context.get_admin_context()
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rpcClient = transport.RPCClient(topic)
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rpcClient.cctxt.cast(rpc_ctx,
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'network_function_notification',
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notification_data=notification)
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except Exception as e:
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msg = "Exception while calling notification: %s" % (e)
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LOG.error(msg)
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raise Exception(e)
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@nfp_api.poll_event_desc(event='PULL_NOTIFICATIONS',
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spacing=nfp_constants.PULL_NOTIFICATIONS_SPACING)
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def pull_notifications(self, ev):
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"""Pull and handle notification from configurator."""
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notifications = transport.get_response_from_configurator(self._conf)
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if not isinstance(notifications, list):
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message = "Notfications not list, %s" % (notifications)
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LOG.error(message)
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else:
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for notification in notifications:
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if not notification:
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message = "Receiver Response: Empty"
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LOG.info(message)
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continue
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try:
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self._method_handler(notification)
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except AttributeError:
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exc_type, exc_value, exc_traceback = sys.exc_info()
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message = ("AttributeError while handling"
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"message %s : %s " % (notification,
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traceback.format_exception(
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exc_type, exc_value, exc_traceback)))
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LOG.error(message)
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except Exception as e:
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exc_type, exc_value, exc_traceback = sys.exc_info()
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message = ("Generic exception (%s)"
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"while handling message (%s) : %s" % (
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e, notification, traceback.format_exception(
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exc_type, exc_value, exc_traceback)))
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LOG.error(message)
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