X-Git-Url: https://osm.etsi.org/gitweb/?p=osm%2FNBI.git;a=blobdiff_plain;f=osm_nbi%2Fsubscriptions.py;h=ec70d0c2755cb0405facbd8df0b0a19b5c4e03a0;hp=156f466db63b87b59f4c53f0db82890d86548541;hb=786aeddab7b7491a139c958ecec6439bee5da83a;hpb=ee270727d8a9ae41924dfce4a6789af1b5045602 diff --git a/osm_nbi/subscriptions.py b/osm_nbi/subscriptions.py index 156f466..ec70d0c 100644 --- a/osm_nbi/subscriptions.py +++ b/osm_nbi/subscriptions.py @@ -24,10 +24,12 @@ import logging import threading import asyncio from http import HTTPStatus + from osm_common import dbmongo, dbmemory, msglocal, msgkafka from osm_common.dbbase import DbException from osm_common.msgbase import MsgException -from engine import EngineException +from osm_nbi.engine import EngineException +from osm_nbi.notifications import NsLcmNotification __author__ = "Alfonso Tierno " @@ -55,7 +57,8 @@ class SubscriptionThread(threading.Thread): self.engine = engine self.loop = None self.logger = logging.getLogger("nbi.subscriptions") - self.aiomain_task = None # asyncio task for receiving kafka bus + self.aiomain_task_admin = None # asyncio task for receiving admin actions from kafka bus + self.aiomain_task = None # asyncio task for receiving normal actions from kafka bus self.internal_session = { # used for a session to the engine methods "project_id": (), "set_project": (), @@ -64,6 +67,7 @@ class SubscriptionThread(threading.Thread): "public": None, "method": "delete", } + self.nslcm = None async def start_kafka(self): # timeout_wait_for_kafka = 3*60 @@ -79,11 +83,32 @@ class SubscriptionThread(threading.Thread): if not kafka_working: self.logger.critical("kafka is working again") kafka_working = True - await asyncio.sleep(10, loop=self.loop) - self.aiomain_task = asyncio.ensure_future(self.msg.aioread(("ns", "nsi"), loop=self.loop, - callback=self._msg_callback), - loop=self.loop) - await asyncio.wait_for(self.aiomain_task, timeout=None, loop=self.loop) + if not self.aiomain_task_admin: + await asyncio.sleep(10, loop=self.loop) + self.logger.debug("Starting admin subscription task") + self.aiomain_task_admin = asyncio.ensure_future(self.msg.aioread(("admin",), loop=self.loop, + group_id=False, + aiocallback=self._msg_callback), + loop=self.loop) + if not self.aiomain_task: + await asyncio.sleep(10, loop=self.loop) + self.logger.debug("Starting non-admin subscription task") + self.aiomain_task = asyncio.ensure_future(self.msg.aioread(("ns", "nsi"), loop=self.loop, + aiocallback=self._msg_callback), + loop=self.loop) + done, _ = await asyncio.wait([self.aiomain_task, self.aiomain_task_admin], + timeout=None, loop=self.loop, return_when=asyncio.FIRST_COMPLETED) + try: + if self.aiomain_task_admin in done: + exc = self.aiomain_task_admin.exception() + self.logger.error("admin subscription task exception: {}".format(exc)) + self.aiomain_task_admin = None + if self.aiomain_task in done: + exc = self.aiomain_task.exception() + self.logger.error("non-admin subscription task exception: {}".format(exc)) + self.aiomain_task = None + except asyncio.CancelledError: + pass except Exception as e: if self.to_terminate: return @@ -122,7 +147,7 @@ class SubscriptionThread(threading.Thread): else: raise SubscriptionException("Invalid configuration param '{}' at '[message]':'driver'".format( config_msg["driver"])) - + self.nslcm = NsLcmNotification(self.db) except (DbException, MsgException) as e: raise SubscriptionException(str(e), http_code=e.http_code) @@ -141,7 +166,7 @@ class SubscriptionThread(threading.Thread): self._stop() self.loop.close() - def _msg_callback(self, topic, command, params): + async def _msg_callback(self, topic, command, params): """ Callback to process a received message from kafka :param topic: topic received @@ -149,21 +174,67 @@ class SubscriptionThread(threading.Thread): :param params: rest of parameters :return: None """ + msg_to_send = [] try: if topic == "ns": if command == "terminated" and params["operationState"] in ("COMPLETED", "PARTIALLY_COMPLETED"): self.logger.debug("received ns terminated {}".format(params)) if params.get("autoremove"): - self.engine.del_item(self.internal_session, "nsrs", _id=params["nsr_id"]) + self.engine.del_item(self.internal_session, "nsrs", _id=params["nsr_id"], + not_send_msg=msg_to_send) self.logger.debug("ns={} deleted from database".format(params["nsr_id"])) - return - if topic == "nsi": + # Check for nslcm notification + if isinstance(params, dict): + # Check availability of operationState and command + if (not params.get("operationState")) or (not command) or (not params.get("operationParams")): + self.logger.debug("Message can not be used for notification of nslcm") + else: + nsd_id = params["operationParams"].get("nsdId") + ns_instance_id = params["operationParams"].get("nsInstanceId") + # Any one among nsd_id, ns_instance_id should be present. + if not (nsd_id or ns_instance_id): + self.logger.debug("Message can not be used for notification of nslcm") + else: + op_state = params["operationState"] + event_details = {"topic": topic, "command": command.upper(), "params": params} + subscribers = self.nslcm.get_subscribers(nsd_id, ns_instance_id, command.upper(), op_state, + event_details) + # self.logger.debug("subscribers list: ") + # self.logger.debug(subscribers) + if subscribers: + asyncio.ensure_future(self.nslcm.send_notifications(subscribers, loop=self.loop), + loop=self.loop) + else: + self.logger.debug("Message can not be used for notification of nslcm") + elif topic == "nsi": if command == "terminated" and params["operationState"] in ("COMPLETED", "PARTIALLY_COMPLETED"): self.logger.debug("received nsi terminated {}".format(params)) if params.get("autoremove"): - self.engine.del_item(self.internal_session, "nsis", _id=params["nsir_id"]) + self.engine.del_item(self.internal_session, "nsis", _id=params["nsir_id"], + not_send_msg=msg_to_send) self.logger.debug("nsis={} deleted from database".format(params["nsir_id"])) - return + elif topic == "admin": + self.logger.debug("received {} {} {}".format(topic, command, params)) + if command in ["echo", "ping"]: # ignored commands + pass + elif command == "revoke_token": + if params: + if isinstance(params, dict) and "_id" in params: + tid = params.get("_id") + self.engine.authenticator.tokens_cache.pop(tid, None) + self.logger.debug("token '{}' removed from token_cache".format(tid)) + else: + self.logger.debug("unrecognized params in command '{} {}': {}" + .format(topic, command, params)) + else: + self.engine.authenticator.tokens_cache.clear() + self.logger.debug("token_cache cleared") + else: + self.logger.debug("unrecognized command '{} {}'".format(topic, command)) + # writing to kafka must be done with our own loop. For this reason it is not allowed Engine to do that, + # but content to be written is stored at msg_to_send + for msg in msg_to_send: + await self.msg.aiowrite(*msg, loop=self.loop) except (EngineException, DbException, MsgException) as e: self.logger.error("Error while processing topic={} command={}: {}".format(topic, command, e)) except Exception as e: @@ -192,3 +263,5 @@ class SubscriptionThread(threading.Thread): self.to_terminate = True if self.aiomain_task: self.loop.call_soon_threadsafe(self.aiomain_task.cancel) + if self.aiomain_task_admin: + self.loop.call_soon_threadsafe(self.aiomain_task_admin.cancel)