Feature 10996: Adds handling of nslcmop cancel event. kafka_read_callback is now...

[osm/LCM.git] / osm_lcm / lcm.py

diff --git a/osm_lcm/lcm.py b/osm_lcm/lcm.py
index 5ed39ab..9b62d82 100644 (file)
--- a/osm_lcm/lcm.py
+++ b/osm_lcm/lcm.py
@@ -294,7 +294,7 @@ class Lcm:
                 wait_time = 2 if not first_start else 5
                 await asyncio.sleep(wait_time)
 
-    def kafka_read_callback(self, topic, command, params):
+    async def kafka_read_callback(self, topic, command, params):
         order_id = 1
 
         if topic != "admin" and command != "ping":
@@ -332,6 +332,44 @@ class Lcm:
                         )
                     )
             return
+        elif topic == "nslcmops":
+            if command == "cancel":
+                nslcmop_id = params["_id"]
+                self.logger.debug("Cancelling nslcmop {}".format(nslcmop_id))
+                nsr_id = params["nsInstanceId"]
+                # cancel the tasks and wait
+                for task in self.lcm_tasks.cancel("ns", nsr_id, nslcmop_id):
+                    try:
+                        await task
+                        self.logger.debug(
+                            "Cancelled task ended {},{},{}".format(
+                                nsr_id, nslcmop_id, task
+                            )
+                        )
+                    except asyncio.CancelledError:
+                        self.logger.debug(
+                            "Task already cancelled and finished {},{},{}".format(
+                                nsr_id, nslcmop_id, task
+                            )
+                        )
+                # update DB
+                q_filter = {"_id": nslcmop_id}
+                update_dict = {
+                    "operationState": "FAILED_TEMP",
+                    "isCancelPending": False,
+                }
+                unset_dict = {
+                    "cancelMode": None,
+                }
+                self.db.set_one(
+                    "nslcmops",
+                    q_filter=q_filter,
+                    update_dict=update_dict,
+                    fail_on_empty=False,
+                    unset=unset_dict,
+                )
+                self.logger.debug("LCM task cancelled {},{}".format(nsr_id, nslcmop_id))
+            return
         elif topic == "pla":
             if command == "placement":
                 self.ns.update_nsrs_with_pla_result(params)
@@ -650,7 +688,6 @@ class Lcm:
         self.logger.debug(
             "Task kafka_read Enter with worker_id={}".format(self.worker_id)
         )
-        # future = asyncio.Future()
         self.consecutive_errors = 0
         self.first_start = True
         while self.consecutive_errors < 10:
@@ -665,15 +702,18 @@ class Lcm:
                     "vca",
                     "k8srepo",
                     "pla",
+                    "nslcmops",
                 )
                 topics_admin = ("admin",)
                 await asyncio.gather(
                     self.msg.aioread(
-                        topics, self.kafka_read_callback, from_beginning=True
+                        topics,
+                        aiocallback=self.kafka_read_callback,
+                        from_beginning=True,
                     ),
                     self.msg_admin.aioread(
                         topics_admin,
-                        self.kafka_read_callback,
+                        aiocallback=self.kafka_read_callback,
                         group_id=False,
                     ),
                 )
@@ -698,7 +738,6 @@ class Lcm:
                 wait_time = 2 if not self.first_start else 5
                 await asyncio.sleep(wait_time)
 
-        # self.logger.debug("Task kafka_read terminating")
         self.logger.debug("Task kafka_read exit")
 
     async def kafka_read_ping(self):