Like many other Optional[] types, it's not always a given that this
object will be set. Wrap it in a type-shim that raises a meaningful
error and will always return a concrete type.
Signed-off-by: John Snow <js...@redhat.com>
---
python/qemu/machine.py | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/python/qemu/machine.py b/python/qemu/machine.py
index d8289936816..a451f9000d6 100644
--- a/python/qemu/machine.py
+++ b/python/qemu/machine.py
@@ -118,7 +118,7 @@ def __init__(self, binary, args=None, wrapper=None,
name=None,
self._events = []
self._iolog = None
self._qmp_set = True # Enable QMP monitor by default.
- self._qmp = None
+ self._qmp_connection: Optional[qmp.QEMUMonitorProtocol] = None
self._qemu_full_args = None
self._temp_dir = None
self._launched = False
@@ -285,7 +285,7 @@ def _pre_launch(self):
if self._remove_monitor_sockfile:
assert isinstance(self._monitor_address, str)
self._remove_files.append(self._monitor_address)
- self._qmp = qmp.QEMUMonitorProtocol(
+ self._qmp_connection = qmp.QEMUMonitorProtocol(
self._monitor_address,
server=True,
nickname=self._name
@@ -455,7 +455,13 @@ def set_qmp_monitor(self, enabled=True):
self._qmp_set = True
else:
self._qmp_set = False
- self._qmp = None
+ self._qmp_connection = None
+
+ @property
+ def _qmp(self) -> qmp.QEMUMonitorProtocol:
+ if self._qmp_connection is None:
+ raise QEMUMachineError("Attempt to access QMP with no connection")
+ return self._qmp_connection
@classmethod
def _qmp_args(cls, _conv_keys: bool = True, **args: Any) -> Dict[str, Any]:
--
2.21.3
