VNT Manager component:

- Corrected Kafka connection

src/vnt_manager/service/VNTManagerServiceServicerImpl.py

@@ -39,15 +39,6 @@ class VNTManagerServiceServicerImpl(VNTManagerServiceServicer):
     def __init__(self):
         LOGGER.debug('Creating Servicer...')
         self.context_client = ContextClient()
-        self.kafka_producer = KafkaProducer({
-            'bootstrap.servers' : KafkaConfig.get_kafka_address()
-        })
-        self.kafka_consumer = KafkaConsumer({
-            'bootstrap.servers' : KafkaConfig.get_kafka_address(),
-            'group.id'          : str(uuid.uuid4()),
-            'auto.offset.reset' : 'latest'
-        })
-        self.kafka_consumer.subscribe([KafkaTopic.VNTMANAGER_RESPONSE.value])
         self.links = []
         LOGGER.debug('Servicer Created')
 
@@ -66,6 +57,9 @@ class VNTManagerServiceServicerImpl(VNTManagerServiceServicer):
         vntm_request = json.dumps(vntm_request)
         MSG = '[send_recommendation] request_key={:s} vntm_request={:s}'
         LOGGER.info(MSG.format(str(request_key), str(vntm_request)))
+        self.kafka_producer = KafkaProducer({
+            'bootstrap.servers' : KafkaConfig.get_kafka_address()
+        })
         self.kafka_producer.produce(
             KafkaTopic.VNTMANAGER_REQUEST.value,
             key=request_key.encode('utf-8'),
@@ -87,6 +81,15 @@ class VNTManagerServiceServicerImpl(VNTManagerServiceServicer):
     def wait_for_reply(self, request_key : str) -> Optional[Dict]:
         LOGGER.info('[wait_for_reply] request_key={:s}'.format(str(request_key)))
 
+        self.kafka_consumer = KafkaConsumer({
+            'bootstrap.servers'   : KafkaConfig.get_kafka_address(),
+            'group.id'            : str(uuid.uuid4()),
+            'auto.offset.reset'   : 'latest',
+            'max.poll.interval.ms': 600000,
+            'session.timeout.ms'  : 60000,
+        })
+        self.kafka_consumer.subscribe([KafkaTopic.VNTMANAGER_RESPONSE.value])
+
         while True:
             receive_msg = self.kafka_consumer.poll(2.0)
             if receive_msg is None: continue