Fix unload of controllers when spawned with --unload-on-kill (#1717)

Author: saikishor

controller_manager/controller_manager/spawner.py

@@ -234,7 +234,7 @@ def main(args=None):
 
             node.get_logger().info(
                 bcolors.OKGREEN
-                + "Configured and activated all the parsed controllers list!"
+                + f"Configured and activated all the parsed controllers list : {controller_names}!"
                 + bcolors.ENDC
             )
 
@@ -258,16 +258,25 @@ def main(args=None):
                     )
                     return 1
 
-                node.get_logger().info("Deactivated controller")
-
-            ret = unload_controller(node, controller_manager_name, controller_name)
-            if not ret.ok:
-                node.get_logger().error(
-                    bcolors.FAIL + "Failed to unload controller" + bcolors.ENDC
+                node.get_logger().info(
+                    f"Successfully deactivated controllers : {controller_names}"
                 )
-                return 1
 
-            node.get_logger().info("Unloaded controller")
+            unload_status = True
+            for controller_name in controller_names:
+                ret = unload_controller(node, controller_manager_name, controller_name)
+                if not ret.ok:
+                    unload_status = False
+                    node.get_logger().error(
+                        bcolors.FAIL
+                        + f"Failed to unload controller : {controller_name}"
+                        + bcolors.ENDC
+                    )
+
+            if unload_status:
+                node.get_logger().info(f"Successfully unloaded controllers : {controller_names}")
+            else:
+                return 1
         return 0
     except KeyboardInterrupt:
         pass

controller_manager/test/test_spawner_unspawner.cpp

@@ -328,6 +328,25 @@ TEST_F(TestLoadController, unload_on_kill)
   ASSERT_EQ(cm_->get_loaded_controllers().size(), 0ul);
 }
 
+TEST_F(TestLoadController, unload_on_kill_activate_as_group)
+{
+  // Launch spawner with unload on kill
+  // timeout command will kill it after the specified time with signal SIGINT
+  ControllerManagerRunner cm_runner(this);
+  cm_->set_parameter(rclcpp::Parameter("ctrl_3.type", test_controller::TEST_CONTROLLER_CLASS_NAME));
+  cm_->set_parameter(rclcpp::Parameter("ctrl_2.type", test_controller::TEST_CONTROLLER_CLASS_NAME));
+  std::stringstream ss;
+  ss << "timeout --signal=INT 5 "
+     << std::string(coveragepy_script) +
+          " $(ros2 pkg prefix controller_manager)/lib/controller_manager/spawner "
+     << "ctrl_3 ctrl_2 --activate-as-group -c test_controller_manager --unload-on-kill";
+
+  EXPECT_NE(std::system(ss.str().c_str()), 0)
+    << "timeout should have killed spawner and returned non 0 code";
+
+  ASSERT_EQ(cm_->get_loaded_controllers().size(), 0ul);
+}
+
 TEST_F(TestLoadController, spawner_test_fallback_controllers)
 {
   const std::string test_file_path = ament_index_cpp::get_package_prefix("controller_manager") +