cluster: notify listeners on up without pools

Author: dkropachev

cassandra/cluster.py

@@ -2104,6 +2104,10 @@ def on_up(self, host):
                 with host.lock:
                     host.set_up()
                     host._currently_handling_node_up = False
+                for listener in self.listeners:
+                    listener.on_up(host)
+                for session in tuple(self.sessions):
+                    session.update_created_pools()
 
         # for testing purposes
         return futures

tests/unit/test_cluster.py

@@ -410,6 +410,22 @@ def test_update_host_endpoint_notifies_listeners_for_live_host(self):
         session.remove_pool.assert_called_once_with(host)
         session.add_or_renew_pool.assert_called_once_with(host, is_host_addition=False)
 
+    def test_on_up_without_pool_futures_notifies_listeners(self):
+        cluster = Cluster(load_balancing_policy=RoundRobinPolicy(), protocol_version=4)
+        self.addCleanup(cluster.shutdown)
+
+        host = Host(DefaultEndPoint("127.0.0.1"), SimpleConvictionPolicy, host_id=uuid.uuid4())
+        host.set_down()
+        cluster.metadata.add_or_return_host(host)
+
+        listener = _RecordingHostStateListener()
+        cluster.register_listener(listener)
+
+        cluster.on_up(host)
+
+        assert host.is_up is True
+        assert listener.events == [("up", "127.0.0.1")]
+
     def test_update_host_endpoint_restarts_reconnector_when_replacement_pool_fails(self):
         cluster = Cluster(load_balancing_policy=RoundRobinPolicy(), protocol_version=4)
         self.addCleanup(cluster.shutdown)