python/machine: permanently switch to AQMP

Remove the QEMU_PYTHON_LEGACY_QMP environment variable, making the
switch from sync qmp to async qmp permanent. Update exceptions and
import paths as necessary.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Beraldo Leal <bleal@redhat.com>
Acked-by: Hanna Reitz <hreitz@redhat.com>
Message-id: 20220321203315.909411-2-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

python/qemu/machine/machine.py

@@ -40,21 +40,16 @@ from typing import (
     TypeVar,
 )
 
-from qemu.qmp import (  # pylint: disable=import-error
+from qemu.aqmp import SocketAddrT
+from qemu.aqmp.legacy import (
+    QEMUMonitorProtocol,
     QMPMessage,
     QMPReturnValue,
-    SocketAddrT,
 )
 
 from . import console_socket
 
 
-if os.environ.get('QEMU_PYTHON_LEGACY_QMP'):
-    from qemu.qmp import QEMUMonitorProtocol
-else:
-    from qemu.aqmp.legacy import QEMUMonitorProtocol
-
-
 LOG = logging.getLogger(__name__)
 
 
@@ -743,8 +738,9 @@ class QEMUMachine:
         :param timeout: Optional timeout, in seconds.
                         See QEMUMonitorProtocol.pull_event.
 
-        :raise QMPTimeoutError: If timeout was non-zero and no matching events
-                                were found.
+        :raise asyncio.TimeoutError:
+            If timeout was non-zero and no matching events were found.
+
         :return: A QMP event matching the filter criteria.
                  If timeout was 0 and no event matched, None.
         """
@@ -767,7 +763,7 @@ class QEMUMachine:
             event = self._qmp.pull_event(wait=timeout)
             if event is None:
                 # NB: None is only returned when timeout is false-ish.
-                # Timeouts raise QMPTimeoutError instead!
+                # Timeouts raise asyncio.TimeoutError instead!
                 break
             if _match(event):
                 return event

python/qemu/machine/qtest.py

@@ -26,7 +26,7 @@ from typing import (
     TextIO,
 )
 
-from qemu.qmp import SocketAddrT  # pylint: disable=import-error
+from qemu.aqmp import SocketAddrT
 
 from .machine import QEMUMachine