PR#4311: kojivmd: refuse tasks instead of ignoring them

Merges #4311
https://pagure.io/koji/pull-request/4311

Fixes: #4312
https://pagure.io/koji/issue/4312
kojivmd: refuse tasks instead of ignoring them

koji/daemon.py

@@ -1432,6 +1432,7 @@ class TaskManager(object):
             # we do not trap these
             raise
         except koji.tasks.RefuseTask as refuse:
+            self.logger.warning("Refusing task %s: %s", handler.id, str(refuse))
             self.session.host.refuseTask(handler.id, msg=str(refuse))
             return
         except koji.tasks.ServerRestart:

vm/kojivmd

@@ -50,6 +50,7 @@ from koji.daemon import SCM, TaskManager
 from koji.tasks import (  # noqa: F401
     BaseTaskHandler,
     MultiPlatformTask,
+    RefuseTask,
     RestartTask,        # handle restarted vm tasks
     RestartVerifyTask,  # handle restarted vm tasks
     ServerExit,
@@ -1084,8 +1085,8 @@ class VMTaskManager(TaskManager):
                 if e.get_error_code() == libvirt.VIR_ERR_NO_DOMAIN:
                     # if this builder does not have the requested VM,
                     # we can't handle the task
-                    self.logger.debug('VM %s not available, ignoring task %i', vm_name, task['id'])
-                    return False
+                    msg = 'VM %s not available' % vm_name
+                    raise RefuseTask(msg)
                 else:
                     raise
         return super(VMTaskManager, self).takeTask(task)