Close internal SelectConnection resources

Pulling out of larger work on closing all resources for the recent broken CI.

compute_endpoint/globus_compute_endpoint/endpoint/rabbit_mq/result_publisher.py

@@ -149,6 +149,11 @@ def run(self) -> None:
 
             except Exception:
                 log.exception("%r Unhandled error; event loop stopped", self)
+
+            finally:
+                if self._mq_conn and self._mq_conn.ioloop:
+                    self._mq_conn.ioloop.close()
+
         self._stop_event.set()
 
         log.debug("%r thread ends.", self)

compute_endpoint/globus_compute_endpoint/endpoint/rabbit_mq/task_queue_subscriber.py

@@ -142,10 +142,16 @@ def run(self):
                 self._connection = self._connect()
                 self._event_watcher()
                 self._connection.ioloop.start()
+
             except Exception:
                 logger.exception(
                     "%s Unhandled exception: shutting down connection.", self
                 )
+
+            finally:
+                if self._connection and self._connection.ioloop:
+                    self._connection.ioloop.close()
+
         self._stop_event.set()
         logger.debug("%s Shutdown complete", self)
 

compute_endpoint/tests/integration/test_rabbit_mq/result_queue_subscriber.py

@@ -323,6 +323,9 @@ def run(self):
             self._connection.ioloop.start()
         except Exception:
             logger.exception("Failed to start subscriber")
+        finally:
+            if self._connection and self._connection.ioloop:
+                self._connection.ioloop.close()
 
     def stop(self) -> None:
         """stop() is called by the parent to shutdown the subscriber"""