Adds support for vnf alarms

[osm/POL.git] / osm_policy_module / core / agent.py

diff --git a/osm_policy_module/core/agent.py b/osm_policy_module/core/agent.py
new file mode 100644 (file)
index 0000000..350f383
--- /dev/null
+++ b/osm_policy_module/core/agent.py
@@ -0,0 +1,133 @@
+# -*- coding: utf-8 -*-
+
+# Copyright 2018 Whitestack, LLC
+# *************************************************************
+
+# This file is part of OSM Monitoring module
+# All Rights Reserved to Whitestack, LLC
+
+# 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.
+
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: bdiaz@whitestack.com or glavado@whitestack.com
+##
+import asyncio
+import logging
+
+import peewee
+
+from osm_policy_module.alarming.service import AlarmingService
+from osm_policy_module.autoscaling.service import AutoscalingService
+from osm_policy_module.common.message_bus_client import MessageBusClient
+from osm_policy_module.core.config import Config
+
+log = logging.getLogger(__name__)
+
+ALLOWED_KAFKA_KEYS = ['instantiated', 'scaled', 'terminated', 'notify_alarm']
+
+
+class PolicyModuleAgent:
+    def __init__(self, config: Config, loop=None):
+        self.conf = config
+        if not loop:
+            loop = asyncio.get_event_loop()
+        self.loop = loop
+        self.msg_bus = MessageBusClient(config)
+        self.autoscaling_service = AutoscalingService(config, loop)
+        self.alarming_service = AlarmingService(config, loop)
+
+    def run(self):
+        self.loop.run_until_complete(self.start())
+
+    async def start(self):
+        topics = [
+            "ns",
+            "alarm_response"
+        ]
+        await self.msg_bus.aioread(topics, self._process_msg)
+        log.critical("Exiting...")
+
+    async def _process_msg(self, topic, key, msg):
+        log.debug("_process_msg topic=%s key=%s msg=%s", topic, key, msg)
+        try:
+            if key in ALLOWED_KAFKA_KEYS:
+
+                if key == 'instantiated':
+                    await self._handle_instantiated(msg)
+
+                if key == 'scaled':
+                    await self._handle_scaled(msg)
+
+                if key == 'terminated':
+                    await self._handle_terminated(msg)
+
+                if key == 'notify_alarm':
+                    await self._handle_alarm_notification(msg)
+            else:
+                log.debug("Key %s is not in ALLOWED_KAFKA_KEYS", key)
+        except peewee.PeeweeException:
+            log.exception("Database error consuming message: ")
+            raise
+        except Exception:
+            log.exception("Error consuming message: ")
+
+    async def _handle_alarm_notification(self, content):
+        log.debug("_handle_alarm_notification: %s", content)
+        alarm_uuid = content['notify_details']['alarm_uuid']
+        status = content['notify_details']['status']
+        await self.autoscaling_service.handle_alarm(alarm_uuid, status)
+        await self.alarming_service.handle_alarm(alarm_uuid, status, content)
+
+    async def _handle_instantiated(self, content):
+        log.debug("_handle_instantiated: %s", content)
+        nslcmop_id = content['nslcmop_id']
+        nslcmop = self.autoscaling_service.get_nslcmop(nslcmop_id)
+        if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
+            nsr_id = nslcmop['nsInstanceId']
+            log.info("Configuring nsr_id: %s", nsr_id)
+            await self.autoscaling_service.configure_scaling_groups(nsr_id)
+            await self.alarming_service.configure_vnf_alarms(nsr_id)
+        else:
+            log.info(
+                "Network_service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+                "Current state is %s. Skipping...",
+                nslcmop['operationState'])
+
+    async def _handle_scaled(self, content):
+        log.debug("_handle_scaled: %s", content)
+        nslcmop_id = content['nslcmop_id']
+        nslcmop = self.autoscaling_service.get_nslcmop(nslcmop_id)
+        if nslcmop['operationState'] == 'COMPLETED' or nslcmop['operationState'] == 'PARTIALLY_COMPLETED':
+            nsr_id = nslcmop['nsInstanceId']
+            log.info("Configuring scaled service with nsr_id: %s", nsr_id)
+            await self.autoscaling_service.configure_scaling_groups(nsr_id)
+            await self.autoscaling_service.delete_orphaned_alarms(nsr_id)
+            await self.alarming_service.configure_vnf_alarms(nsr_id)
+        else:
+            log.debug(
+                "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+                "Current state is %s. Skipping...",
+                nslcmop['operationState'])
+
+    async def _handle_terminated(self, content):
+        log.debug("_handle_deleted: %s", content)
+        nsr_id = content['nsr_id']
+        if content['operationState'] == 'COMPLETED' or content['operationState'] == 'PARTIALLY_COMPLETED':
+            log.info("Deleting scaling groups and alarms for network autoscaling_service with nsr_id: %s", nsr_id)
+            await self.autoscaling_service.delete_scaling_groups(nsr_id)
+            await self.alarming_service.delete_vnf_alarms(nsr_id)
+        else:
+            log.info(
+                "Network service is not in COMPLETED or PARTIALLY_COMPLETED state. "
+                "Current state is %s. Skipping...",
+                content['operationState'])