Merge tag 'python-pull-request' of https://gitlab.com/jsnow/qemu into staging

Python patches

This PR finalizes the switch from Luiz's QMP library to mine.

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* tag 'python-pull-request' of https://gitlab.com/jsnow/qemu:
  python/qmp: remove pylint workaround from legacy.py
  python: rename 'aqmp-tui' to 'qmp-tui'
  python: rename qemu.aqmp to qemu.qmp
  python: re-enable pylint duplicate-code warnings
  python: remove the old QMP package
  python/aqmp: copy qmp docstrings to qemu.aqmp.legacy
  python/aqmp: fully separate from qmp.QEMUMonitorProtocol
  python/aqmp: take QMPBadPortError and parse_address from qemu.qmp
  python: temporarily silence pylint duplicate-code warnings
  python/aqmp-tui: relicense as LGPLv2+
  python/qmp-shell: relicense as LGPLv2+
  python/aqmp: relicense as LGPLv2+
  python/aqmp: add explicit GPLv2 license to legacy.py
  iotests: switch to AQMP
  iotests/mirror-top-perms: switch to AQMP
  scripts/bench-block-job: switch to AQMP
  python/machine: permanently switch to AQMP

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

21 files changed, 396 insertions, 693 deletions

diff --git a/python/qemu/aqmp/__init__.py b/python/qemu/aqmp/__init__.py
deleted file mode 100644
index 4c22c38079..0000000000
--- a/python/qemu/aqmp/__init__.py
+++ /dev/null
@@ -1,59 +0,0 @@
-"""
-QEMU Monitor Protocol (QMP) development library & tooling.
-
-This package provides a fairly low-level class for communicating
-asynchronously with QMP protocol servers, as implemented by QEMU, the
-QEMU Guest Agent, and the QEMU Storage Daemon.
-
-`QMPClient` provides the main functionality of this package. All errors
-raised by this library derive from `QMPError`, see `aqmp.error` for
-additional detail. See `aqmp.events` for an in-depth tutorial on
-managing QMP events.
-"""
-
-# Copyright (C) 2020, 2021 John Snow for Red Hat, Inc.
-#
-# Authors:
-#  John Snow <jsnow@redhat.com>
-#
-# Based on earlier work by Luiz Capitulino <lcapitulino@redhat.com>.
-#
-# This work is licensed under the terms of the GNU GPL, version 2.  See
-# the COPYING file in the top-level directory.
-
-import logging
-
-from .error import QMPError
-from .events import EventListener
-from .message import Message
-from .protocol import (
-    ConnectError,
-    Runstate,
-    SocketAddrT,
-    StateError,
-)
-from .qmp_client import ExecInterruptedError, ExecuteError, QMPClient
-
-
-# Suppress logging unless an application engages it.
-logging.getLogger('qemu.aqmp').addHandler(logging.NullHandler())
-
-
-# The order of these fields impact the Sphinx documentation order.
-__all__ = (
-    # Classes, most to least important
-    'QMPClient',
-    'Message',
-    'EventListener',
-    'Runstate',
-
-    # Exceptions, most generic to most explicit
-    'QMPError',
-    'StateError',
-    'ConnectError',
-    'ExecuteError',
-    'ExecInterruptedError',
-
-    # Type aliases
-    'SocketAddrT',
-)
diff --git a/python/qemu/aqmp/legacy.py b/python/qemu/aqmp/legacy.py
deleted file mode 100644
index 46026e9fdc..0000000000
--- a/python/qemu/aqmp/legacy.py
+++ /dev/null
@@ -1,177 +0,0 @@
-"""
-Sync QMP Wrapper
-
-This class pretends to be qemu.qmp.QEMUMonitorProtocol.
-"""
-
-import asyncio
-from typing import (
-    Any,
-    Awaitable,
-    Dict,
-    List,
-    Optional,
-    TypeVar,
-    Union,
-)
-
-import qemu.qmp
-
-from .error import QMPError
-from .protocol import Runstate, SocketAddrT
-from .qmp_client import QMPClient
-
-
-# (Temporarily) Re-export QMPBadPortError
-QMPBadPortError = qemu.qmp.QMPBadPortError
-
-#: QMPMessage is an entire QMP message of any kind.
-QMPMessage = Dict[str, Any]
-
-#: QMPReturnValue is the 'return' value of a command.
-QMPReturnValue = object
-
-#: QMPObject is any object in a QMP message.
-QMPObject = Dict[str, object]
-
-# QMPMessage can be outgoing commands or incoming events/returns.
-# QMPReturnValue is usually a dict/json object, but due to QAPI's
-# 'returns-whitelist', it can actually be anything.
-#
-# {'return': {}} is a QMPMessage,
-# {} is the QMPReturnValue.
-
-
-# pylint: disable=missing-docstring
-
-
-class QEMUMonitorProtocol(qemu.qmp.QEMUMonitorProtocol):
-    def __init__(self, address: SocketAddrT,
-                 server: bool = False,
-                 nickname: Optional[str] = None):
-
-        # pylint: disable=super-init-not-called
-        self._aqmp = QMPClient(nickname)
-        self._aloop = asyncio.get_event_loop()
-        self._address = address
-        self._timeout: Optional[float] = None
-
-        if server:
-            self._sync(self._aqmp.start_server(self._address))
-
-    _T = TypeVar('_T')
-
-    def _sync(
-            self, future: Awaitable[_T], timeout: Optional[float] = None
-    ) -> _T:
-        return self._aloop.run_until_complete(
-            asyncio.wait_for(future, timeout=timeout)
-        )
-
-    def _get_greeting(self) -> Optional[QMPMessage]:
-        if self._aqmp.greeting is not None:
-            # pylint: disable=protected-access
-            return self._aqmp.greeting._asdict()
-        return None
-
-    # __enter__ and __exit__ need no changes
-    # parse_address needs no changes
-
-    def connect(self, negotiate: bool = True) -> Optional[QMPMessage]:
-        self._aqmp.await_greeting = negotiate
-        self._aqmp.negotiate = negotiate
-
-        self._sync(
-            self._aqmp.connect(self._address)
-        )
-        return self._get_greeting()
-
-    def accept(self, timeout: Optional[float] = 15.0) -> QMPMessage:
-        self._aqmp.await_greeting = True
-        self._aqmp.negotiate = True
-
-        self._sync(self._aqmp.accept(), timeout)
-
-        ret = self._get_greeting()
-        assert ret is not None
-        return ret
-
-    def cmd_obj(self, qmp_cmd: QMPMessage) -> QMPMessage:
-        return dict(
-            self._sync(
-                # pylint: disable=protected-access
-
-                # _raw() isn't a public API, because turning off
-                # automatic ID assignment is discouraged. For
-                # compatibility with iotests *only*, do it anyway.
-                self._aqmp._raw(qmp_cmd, assign_id=False),
-                self._timeout
-            )
-        )
-
-    # Default impl of cmd() delegates to cmd_obj
-
-    def command(self, cmd: str, **kwds: object) -> QMPReturnValue:
-        return self._sync(
-            self._aqmp.execute(cmd, kwds),
-            self._timeout
-        )
-
-    def pull_event(self,
-                   wait: Union[bool, float] = False) -> Optional[QMPMessage]:
-        if not wait:
-            # wait is False/0: "do not wait, do not except."
-            if self._aqmp.events.empty():
-                return None
-
-        # If wait is 'True', wait forever. If wait is False/0, the events
-        # queue must not be empty; but it still needs some real amount
-        # of time to complete.
-        timeout = None
-        if wait and isinstance(wait, float):
-            timeout = wait
-
-        return dict(
-            self._sync(
-                self._aqmp.events.get(),
-                timeout
-            )
-        )
-
-    def get_events(self, wait: Union[bool, float] = False) -> List[QMPMessage]:
-        events = [dict(x) for x in self._aqmp.events.clear()]
-        if events:
-            return events
-
-        event = self.pull_event(wait)
-        return [event] if event is not None else []
-
-    def clear_events(self) -> None:
-        self._aqmp.events.clear()
-
-    def close(self) -> None:
-        self._sync(
-            self._aqmp.disconnect()
-        )
-
-    def settimeout(self, timeout: Optional[float]) -> None:
-        self._timeout = timeout
-
-    def send_fd_scm(self, fd: int) -> None:
-        self._aqmp.send_fd_scm(fd)
-
-    def __del__(self) -> None:
-        if self._aqmp.runstate == Runstate.IDLE:
-            return
-
-        if not self._aloop.is_running():
-            self.close()
-        else:
-            # Garbage collection ran while the event loop was running.
-            # Nothing we can do about it now, but if we don't raise our
-            # own error, the user will be treated to a lot of traceback
-            # they might not understand.
-            raise QMPError(
-                "QEMUMonitorProtocol.close()"
-                " was not called before object was garbage collected"
-            )
diff --git a/python/qemu/aqmp/py.typed b/python/qemu/aqmp/py.typed
deleted file mode 100644
index e69de29bb2..0000000000
--- a/python/qemu/aqmp/py.typed
+++ /dev/null
diff --git a/python/qemu/machine/machine.py b/python/qemu/machine/machine.py
index a5972fab4d..07ac5a710b 100644
--- a/python/qemu/machine/machine.py
+++ b/python/qemu/machine/machine.py
@@ -40,21 +40,16 @@ from typing import (
     TypeVar,
 )
 
-from qemu.qmp import (  # pylint: disable=import-error
+from qemu.qmp import SocketAddrT
+from qemu.qmp.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
diff --git a/python/qemu/machine/qtest.py b/python/qemu/machine/qtest.py
index f2f9aaa5e5..1a1fc6c9b0 100644
--- a/python/qemu/machine/qtest.py
+++ b/python/qemu/machine/qtest.py
@@ -26,7 +26,7 @@ from typing import (
     TextIO,
 )
 
-from qemu.qmp import SocketAddrT  # pylint: disable=import-error
+from qemu.qmp import SocketAddrT
 
 from .machine import QEMUMachine
 
diff --git a/python/qemu/qmp/README.rst b/python/qemu/qmp/README.rst
deleted file mode 100644
index 5bfb82535f..0000000000
--- a/python/qemu/qmp/README.rst
+++ /dev/null
@@ -1,9 +0,0 @@
-qemu.qmp package
-================
-
-This package provides a library used for connecting to and communicating
-with QMP servers. It is used extensively by iotests, vm tests,
-avocado tests, and other utilities in the ./scripts directory. It is
-not a fully-fledged SDK and is subject to change at any time.
-
-See the documentation in ``__init__.py`` for more information.
diff --git a/python/qemu/qmp/__init__.py b/python/qemu/qmp/__init__.py
index 358c0971d0..69190d057a 100644
--- a/python/qemu/qmp/__init__.py
+++ b/python/qemu/qmp/__init__.py
@@ -1,422 +1,59 @@
 """
 QEMU Monitor Protocol (QMP) development library & tooling.
 
-This package provides a fairly low-level class for communicating to QMP
-protocol servers, as implemented by QEMU, the QEMU Guest Agent, and the
-QEMU Storage Daemon. This library is not intended for production use.
-
-`QEMUMonitorProtocol` is the primary class of interest, and all errors
-raised derive from `QMPError`.
+This package provides a fairly low-level class for communicating
+asynchronously with QMP protocol servers, as implemented by QEMU, the
+QEMU Guest Agent, and the QEMU Storage Daemon.
+
+`QMPClient` provides the main functionality of this package. All errors
+raised by this library derive from `QMPError`, see `qmp.error` for
+additional detail. See `qmp.events` for an in-depth tutorial on
+managing QMP events.
 """
 
-# Copyright (C) 2009, 2010 Red Hat Inc.
+# Copyright (C) 2020-2022 John Snow for Red Hat, Inc.
 #
 # Authors:
-#  Luiz Capitulino <lcapitulino@redhat.com>
+#  John Snow <jsnow@redhat.com>
 #
-# This work is licensed under the terms of the GNU GPL, version 2.  See
-# the COPYING file in the top-level directory.
-
-import errno
-import json
-import logging
-import socket
-import struct
-from types import TracebackType
-from typing import (
-    Any,
-    Dict,
-    List,
-    Optional,
-    TextIO,
-    Tuple,
-    Type,
-    TypeVar,
-    Union,
-    cast,
-)
-
-
-#: QMPMessage is an entire QMP message of any kind.
-QMPMessage = Dict[str, Any]
-
-#: QMPReturnValue is the 'return' value of a command.
-QMPReturnValue = object
-
-#: QMPObject is any object in a QMP message.
-QMPObject = Dict[str, object]
-
-# QMPMessage can be outgoing commands or incoming events/returns.
-# QMPReturnValue is usually a dict/json object, but due to QAPI's
-# 'returns-whitelist', it can actually be anything.
+# Based on earlier work by Luiz Capitulino <lcapitulino@redhat.com>.
 #
-# {'return': {}} is a QMPMessage,
-# {} is the QMPReturnValue.
-
-
-InternetAddrT = Tuple[str, int]
-UnixAddrT = str
-SocketAddrT = Union[InternetAddrT, UnixAddrT]
-
-
-class QMPError(Exception):
-    """
-    QMP base exception
-    """
-
-
-class QMPConnectError(QMPError):
-    """
-    QMP connection exception
-    """
-
-
-class QMPCapabilitiesError(QMPError):
-    """
-    QMP negotiate capabilities exception
-    """
-
-
-class QMPTimeoutError(QMPError):
-    """
-    QMP timeout exception
-    """
-
-
-class QMPProtocolError(QMPError):
-    """
-    QMP protocol error; unexpected response
-    """
-
-
-class QMPResponseError(QMPError):
-    """
-    Represents erroneous QMP monitor reply
-    """
-    def __init__(self, reply: QMPMessage):
-        try:
-            desc = reply['error']['desc']
-        except KeyError:
-            desc = reply
-        super().__init__(desc)
-        self.reply = reply
-
-
-class QMPBadPortError(QMPError):
-    """
-    Unable to parse socket address: Port was non-numerical.
-    """
-
-
-class QEMUMonitorProtocol:
-    """
-    Provide an API to connect to QEMU via QEMU Monitor Protocol (QMP) and then
-    allow to handle commands and events.
-    """
-
-    #: Logger object for debugging messages
-    logger = logging.getLogger('QMP')
-
-    def __init__(self, address: SocketAddrT,
-                 server: bool = False,
-                 nickname: Optional[str] = None):
-        """
-        Create a QEMUMonitorProtocol class.
-
-        @param address: QEMU address, can be either a unix socket path (string)
-                        or a tuple in the form ( address, port ) for a TCP
-                        connection
-        @param server: server mode listens on the socket (bool)
-        @raise OSError on socket connection errors
-        @note No connection is established, this is done by the connect() or
-              accept() methods
-        """
-        self.__events: List[QMPMessage] = []
-        self.__address = address
-        self.__sock = self.__get_sock()
-        self.__sockfile: Optional[TextIO] = None
-        self._nickname = nickname
-        if self._nickname:
-            self.logger = logging.getLogger('QMP').getChild(self._nickname)
-        if server:
-            self.__sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-            self.__sock.bind(self.__address)
-            self.__sock.listen(1)
-
-    def __get_sock(self) -> socket.socket:
-        if isinstance(self.__address, tuple):
-            family = socket.AF_INET
-        else:
-            family = socket.AF_UNIX
-        return socket.socket(family, socket.SOCK_STREAM)
-
-    def __negotiate_capabilities(self) -> QMPMessage:
-        greeting = self.__json_read()
-        if greeting is None or "QMP" not in greeting:
-            raise QMPConnectError
-        # Greeting seems ok, negotiate capabilities
-        resp = self.cmd('qmp_capabilities')
-        if resp and "return" in resp:
-            return greeting
-        raise QMPCapabilitiesError
-
-    def __json_read(self, only_event: bool = False) -> Optional[QMPMessage]:
-        assert self.__sockfile is not None
-        while True:
-            data = self.__sockfile.readline()
-            if not data:
-                return None
-            # By definition, any JSON received from QMP is a QMPMessage,
-            # and we are asserting only at static analysis time that it
-            # has a particular shape.
-            resp: QMPMessage = json.loads(data)
-            if 'event' in resp:
-                self.logger.debug("<<< %s", resp)
-                self.__events.append(resp)
-                if not only_event:
-                    continue
-            return resp
-
-    def __get_events(self, wait: Union[bool, float] = False) -> None:
-        """
-        Check for new events in the stream and cache them in __events.
+# This work is licensed under the terms of the GNU LGPL, version 2 or
+# later. See the COPYING file in the top-level directory.
 
-        @param wait (bool): block until an event is available.
-        @param wait (float): If wait is a float, treat it as a timeout value.
-
-        @raise QMPTimeoutError: If a timeout float is provided and the timeout
-                                period elapses.
-        @raise QMPConnectError: If wait is True but no events could be
-                                retrieved or if some other error occurred.
-        """
-
-        # Current timeout and blocking status
-        current_timeout = self.__sock.gettimeout()
-
-        # Check for new events regardless and pull them into the cache:
-        self.__sock.settimeout(0)  # i.e. setblocking(False)
-        try:
-            self.__json_read()
-        except OSError as err:
-            # EAGAIN: No data available; not critical
-            if err.errno != errno.EAGAIN:
-                raise
-        finally:
-            self.__sock.settimeout(current_timeout)
-
-        # Wait for new events, if needed.
-        # if wait is 0.0, this means "no wait" and is also implicitly false.
-        if not self.__events and wait:
-            if isinstance(wait, float):
-                self.__sock.settimeout(wait)
-            try:
-                ret = self.__json_read(only_event=True)
-            except socket.timeout as err:
-                raise QMPTimeoutError("Timeout waiting for event") from err
-            except Exception as err:
-                msg = "Error while reading from socket"
-                raise QMPConnectError(msg) from err
-            finally:
-                self.__sock.settimeout(current_timeout)
-
-            if ret is None:
-                raise QMPConnectError("Error while reading from socket")
-
-    T = TypeVar('T')
-
-    def __enter__(self: T) -> T:
-        # Implement context manager enter function.
-        return self
-
-    def __exit__(self,
-                 # pylint: disable=duplicate-code
-                 # see https://github.com/PyCQA/pylint/issues/3619
-                 exc_type: Optional[Type[BaseException]],
-                 exc_val: Optional[BaseException],
-                 exc_tb: Optional[TracebackType]) -> None:
-        # Implement context manager exit function.
-        self.close()
-
-    @classmethod
-    def parse_address(cls, address: str) -> SocketAddrT:
-        """
-        Parse a string into a QMP address.
-
-        Figure out if the argument is in the port:host form.
-        If it's not, it's probably a file path.
-        """
-        components = address.split(':')
-        if len(components) == 2:
-            try:
-                port = int(components[1])
-            except ValueError:
-                msg = f"Bad port: '{components[1]}' in '{address}'."
-                raise QMPBadPortError(msg) from None
-            return (components[0], port)
-
-        # Treat as filepath.
-        return address
-
-    def connect(self, negotiate: bool = True) -> Optional[QMPMessage]:
-        """
-        Connect to the QMP Monitor and perform capabilities negotiation.
-
-        @return QMP greeting dict, or None if negotiate is false
-        @raise OSError on socket connection errors
-        @raise QMPConnectError if the greeting is not received
-        @raise QMPCapabilitiesError if fails to negotiate capabilities
-        """
-        self.__sock.connect(self.__address)
-        self.__sockfile = self.__sock.makefile(mode='r')
-        if negotiate:
-            return self.__negotiate_capabilities()
-        return None
-
-    def accept(self, timeout: Optional[float] = 15.0) -> QMPMessage:
-        """
-        Await connection from QMP Monitor and perform capabilities negotiation.
-
-        @param timeout: timeout in seconds (nonnegative float number, or
-                        None). The value passed will set the behavior of the
-                        underneath QMP socket as described in [1].
-                        Default value is set to 15.0.
-
-        @return QMP greeting dict
-        @raise OSError on socket connection errors
-        @raise QMPConnectError if the greeting is not received
-        @raise QMPCapabilitiesError if fails to negotiate capabilities
-
-        [1]
-        https://docs.python.org/3/library/socket.html#socket.socket.settimeout
-        """
-        self.__sock.settimeout(timeout)
-        self.__sock, _ = self.__sock.accept()
-        self.__sockfile = self.__sock.makefile(mode='r')
-        return self.__negotiate_capabilities()
-
-    def cmd_obj(self, qmp_cmd: QMPMessage) -> QMPMessage:
-        """
-        Send a QMP command to the QMP Monitor.
-
-        @param qmp_cmd: QMP command to be sent as a Python dict
-        @return QMP response as a Python dict
-        """
-        self.logger.debug(">>> %s", qmp_cmd)
-        self.__sock.sendall(json.dumps(qmp_cmd).encode('utf-8'))
-        resp = self.__json_read()
-        if resp is None:
-            raise QMPConnectError("Unexpected empty reply from server")
-        self.logger.debug("<<< %s", resp)
-        return resp
-
-    def cmd(self, name: str,
-            args: Optional[Dict[str, object]] = None,
-            cmd_id: Optional[object] = None) -> QMPMessage:
-        """
-        Build a QMP command and send it to the QMP Monitor.
-
-        @param name: command name (string)
-        @param args: command arguments (dict)
-        @param cmd_id: command id (dict, list, string or int)
-        """
-        qmp_cmd: QMPMessage = {'execute': name}
-        if args:
-            qmp_cmd['arguments'] = args
-        if cmd_id:
-            qmp_cmd['id'] = cmd_id
-        return self.cmd_obj(qmp_cmd)
-
-    def command(self, cmd: str, **kwds: object) -> QMPReturnValue:
-        """
-        Build and send a QMP command to the monitor, report errors if any
-        """
-        ret = self.cmd(cmd, kwds)
-        if 'error' in ret:
-            raise QMPResponseError(ret)
-        if 'return' not in ret:
-            raise QMPProtocolError(
-                "'return' key not found in QMP response '{}'".format(str(ret))
-            )
-        return cast(QMPReturnValue, ret['return'])
-
-    def pull_event(self,
-                   wait: Union[bool, float] = False) -> Optional[QMPMessage]:
-        """
-        Pulls a single event.
-
-        @param wait (bool): block until an event is available.
-        @param wait (float): If wait is a float, treat it as a timeout value.
-
-        @raise QMPTimeoutError: If a timeout float is provided and the timeout
-                                period elapses.
-        @raise QMPConnectError: If wait is True but no events could be
-                                retrieved or if some other error occurred.
-
-        @return The first available QMP event, or None.
-        """
-        self.__get_events(wait)
-
-        if self.__events:
-            return self.__events.pop(0)
-        return None
-
-    def get_events(self, wait: bool = False) -> List[QMPMessage]:
-        """
-        Get a list of available QMP events and clear all pending events.
-
-        @param wait (bool): block until an event is available.
-        @param wait (float): If wait is a float, treat it as a timeout value.
-
-        @raise QMPTimeoutError: If a timeout float is provided and the timeout
-                                period elapses.
-        @raise QMPConnectError: If wait is True but no events could be
-                                retrieved or if some other error occurred.
-
-        @return The list of available QMP events.
-        """
-        self.__get_events(wait)
-        events = self.__events
-        self.__events = []
-        return events
+import logging
 
-    def clear_events(self) -> None:
-        """
-        Clear current list of pending events.
-        """
-        self.__events = []
+from .error import QMPError
+from .events import EventListener
+from .message import Message
+from .protocol import (
+    ConnectError,
+    Runstate,
+    SocketAddrT,
+    StateError,
+)
+from .qmp_client import ExecInterruptedError, ExecuteError, QMPClient
 
-    def close(self) -> None:
-        """
-        Close the socket and socket file.
-        """
-        if self.__sock:
-            self.__sock.close()
-        if self.__sockfile:
-            self.__sockfile.close()
 
-    def settimeout(self, timeout: Optional[float]) -> None:
-        """
-        Set the socket timeout.
+# Suppress logging unless an application engages it.
+logging.getLogger('qemu.qmp').addHandler(logging.NullHandler())
 
-        @param timeout (float): timeout in seconds (non-zero), or None.
-        @note This is a wrap around socket.settimeout
 
-        @raise ValueError: if timeout was set to 0.
-        """
-        if timeout == 0:
-            msg = "timeout cannot be 0; this engages non-blocking mode."
-            msg += " Use 'None' instead to disable timeouts."
-            raise ValueError(msg)
-        self.__sock.settimeout(timeout)
+# The order of these fields impact the Sphinx documentation order.
+__all__ = (
+    # Classes, most to least important
+    'QMPClient',
+    'Message',
+    'EventListener',
+    'Runstate',
 
-    def send_fd_scm(self, fd: int) -> None:
-        """
-        Send a file descriptor to the remote via SCM_RIGHTS.
-        """
-        if self.__sock.family != socket.AF_UNIX:
-            raise RuntimeError("Can't use SCM_RIGHTS on non-AF_UNIX socket.")
+    # Exceptions, most generic to most explicit
+    'QMPError',
+    'StateError',
+    'ConnectError',
+    'ExecuteError',
+    'ExecInterruptedError',
 
-        self.__sock.sendmsg(
-            [b' '],
-            [(socket.SOL_SOCKET, socket.SCM_RIGHTS, struct.pack('@i', fd))]
-        )
+    # Type aliases
+    'SocketAddrT',
+)
diff --git a/python/qemu/aqmp/error.py b/python/qemu/qmp/error.py
index 24ba4d5054..24ba4d5054 100644
--- a/python/qemu/aqmp/error.py
+++ b/python/qemu/qmp/error.py
diff --git a/python/qemu/aqmp/events.py b/python/qemu/qmp/events.py
index f3d4e2b5e8..6199776cc6 100644
--- a/python/qemu/aqmp/events.py
+++ b/python/qemu/qmp/events.py
@@ -1,5 +1,5 @@
 """
-AQMP Events and EventListeners
+QMP Events and EventListeners
 
 Asynchronous QMP uses `EventListener` objects to listen for events. An
 `EventListener` is a FIFO event queue that can be pre-filtered to listen
diff --git a/python/qemu/qmp/legacy.py b/python/qemu/qmp/legacy.py
new file mode 100644
index 0000000000..03b5574618
--- /dev/null
+++ b/python/qemu/qmp/legacy.py
@@ -0,0 +1,315 @@
+"""
+(Legacy) Sync QMP Wrapper
+
+This module provides the `QEMUMonitorProtocol` class, which is a
+synchronous wrapper around `QMPClient`.
+
+Its design closely resembles that of the original QEMUMonitorProtocol
+class, originally written by Luiz Capitulino. It is provided here for
+compatibility with scripts inside the QEMU source tree that expect the
+old interface.
+"""
+
+#
+# Copyright (C) 2009-2022 Red Hat Inc.
+#
+# Authors:
+#  Luiz Capitulino <lcapitulino@redhat.com>
+#  John Snow <jsnow@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2.  See
+# the COPYING file in the top-level directory.
+#
+
+import asyncio
+from types import TracebackType
+from typing import (
+    Any,
+    Awaitable,
+    Dict,
+    List,
+    Optional,
+    Type,
+    TypeVar,
+    Union,
+)
+
+from .error import QMPError
+from .protocol import Runstate, SocketAddrT
+from .qmp_client import QMPClient
+
+
+#: QMPMessage is an entire QMP message of any kind.
+QMPMessage = Dict[str, Any]
+
+#: QMPReturnValue is the 'return' value of a command.
+QMPReturnValue = object
+
+#: QMPObject is any object in a QMP message.
+QMPObject = Dict[str, object]
+
+# QMPMessage can be outgoing commands or incoming events/returns.
+# QMPReturnValue is usually a dict/json object, but due to QAPI's
+# 'returns-whitelist', it can actually be anything.
+#
+# {'return': {}} is a QMPMessage,
+# {} is the QMPReturnValue.
+
+
+class QMPBadPortError(QMPError):
+    """
+    Unable to parse socket address: Port was non-numerical.
+    """
+
+
+class QEMUMonitorProtocol:
+    """
+    Provide an API to connect to QEMU via QEMU Monitor Protocol (QMP)
+    and then allow to handle commands and events.
+
+    :param address:  QEMU address, can be either a unix socket path (string)
+                     or a tuple in the form ( address, port ) for a TCP
+                     connection
+    :param server:   Act as the socket server. (See 'accept')
+    :param nickname: Optional nickname used for logging.
+    """
+
+    def __init__(self, address: SocketAddrT,
+                 server: bool = False,
+                 nickname: Optional[str] = None):
+
+        self._qmp = QMPClient(nickname)
+        self._aloop = asyncio.get_event_loop()
+        self._address = address
+        self._timeout: Optional[float] = None
+
+        if server:
+            self._sync(self._qmp.start_server(self._address))
+
+    _T = TypeVar('_T')
+
+    def _sync(
+            self, future: Awaitable[_T], timeout: Optional[float] = None
+    ) -> _T:
+        return self._aloop.run_until_complete(
+            asyncio.wait_for(future, timeout=timeout)
+        )
+
+    def _get_greeting(self) -> Optional[QMPMessage]:
+        if self._qmp.greeting is not None:
+            # pylint: disable=protected-access
+            return self._qmp.greeting._asdict()
+        return None
+
+    def __enter__(self: _T) -> _T:
+        # Implement context manager enter function.
+        return self
+
+    def __exit__(self,
+                 exc_type: Optional[Type[BaseException]],
+                 exc_val: Optional[BaseException],
+                 exc_tb: Optional[TracebackType]) -> None:
+        # Implement context manager exit function.
+        self.close()
+
+    @classmethod
+    def parse_address(cls, address: str) -> SocketAddrT:
+        """
+        Parse a string into a QMP address.
+
+        Figure out if the argument is in the port:host form.
+        If it's not, it's probably a file path.
+        """
+        components = address.split(':')
+        if len(components) == 2:
+            try:
+                port = int(components[1])
+            except ValueError:
+                msg = f"Bad port: '{components[1]}' in '{address}'."
+                raise QMPBadPortError(msg) from None
+            return (components[0], port)
+
+        # Treat as filepath.
+        return address
+
+    def connect(self, negotiate: bool = True) -> Optional[QMPMessage]:
+        """
+        Connect to the QMP Monitor and perform capabilities negotiation.
+
+        :return: QMP greeting dict, or None if negotiate is false
+        :raise ConnectError: on connection errors
+        """
+        self._qmp.await_greeting = negotiate
+        self._qmp.negotiate = negotiate
+
+        self._sync(
+            self._qmp.connect(self._address)
+        )
+        return self._get_greeting()
+
+    def accept(self, timeout: Optional[float] = 15.0) -> QMPMessage:
+        """
+        Await connection from QMP Monitor and perform capabilities negotiation.
+
+        :param timeout:
+            timeout in seconds (nonnegative float number, or None).
+            If None, there is no timeout, and this may block forever.
+
+        :return: QMP greeting dict
+        :raise ConnectError: on connection errors
+        """
+        self._qmp.await_greeting = True
+        self._qmp.negotiate = True
+
+        self._sync(self._qmp.accept(), timeout)
+
+        ret = self._get_greeting()
+        assert ret is not None
+        return ret
+
+    def cmd_obj(self, qmp_cmd: QMPMessage) -> QMPMessage:
+        """
+        Send a QMP command to the QMP Monitor.
+
+        :param qmp_cmd: QMP command to be sent as a Python dict
+        :return: QMP response as a Python dict
+        """
+        return dict(
+            self._sync(
+                # pylint: disable=protected-access
+
+                # _raw() isn't a public API, because turning off
+                # automatic ID assignment is discouraged. For
+                # compatibility with iotests *only*, do it anyway.
+                self._qmp._raw(qmp_cmd, assign_id=False),
+                self._timeout
+            )
+        )
+
+    def cmd(self, name: str,
+            args: Optional[Dict[str, object]] = None,
+            cmd_id: Optional[object] = None) -> QMPMessage:
+        """
+        Build a QMP command and send it to the QMP Monitor.
+
+        :param name: command name (string)
+        :param args: command arguments (dict)
+        :param cmd_id: command id (dict, list, string or int)
+        """
+        qmp_cmd: QMPMessage = {'execute': name}
+        if args:
+            qmp_cmd['arguments'] = args
+        if cmd_id:
+            qmp_cmd['id'] = cmd_id
+        return self.cmd_obj(qmp_cmd)
+
+    def command(self, cmd: str, **kwds: object) -> QMPReturnValue:
+        """
+        Build and send a QMP command to the monitor, report errors if any
+        """
+        return self._sync(
+            self._qmp.execute(cmd, kwds),
+            self._timeout
+        )
+
+    def pull_event(self,
+                   wait: Union[bool, float] = False) -> Optional[QMPMessage]:
+        """
+        Pulls a single event.
+
+        :param wait:
+            If False or 0, do not wait. Return None if no events ready.
+            If True, wait forever until the next event.
+            Otherwise, wait for the specified number of seconds.
+
+        :raise asyncio.TimeoutError:
+            When a timeout is requested and the timeout period elapses.
+
+        :return: The first available QMP event, or None.
+        """
+        if not wait:
+            # wait is False/0: "do not wait, do not except."
+            if self._qmp.events.empty():
+                return None
+
+        # If wait is 'True', wait forever. If wait is False/0, the events
+        # queue must not be empty; but it still needs some real amount
+        # of time to complete.
+        timeout = None
+        if wait and isinstance(wait, float):
+            timeout = wait
+
+        return dict(
+            self._sync(
+                self._qmp.events.get(),
+                timeout
+            )
+        )
+
+    def get_events(self, wait: Union[bool, float] = False) -> List[QMPMessage]:
+        """
+        Get a list of QMP events and clear all pending events.
+
+        :param wait:
+            If False or 0, do not wait. Return None if no events ready.
+            If True, wait until we have at least one event.
+            Otherwise, wait for up to the specified number of seconds for at
+            least one event.
+
+        :raise asyncio.TimeoutError:
+            When a timeout is requested and the timeout period elapses.
+
+        :return: A list of QMP events.
+        """
+        events = [dict(x) for x in self._qmp.events.clear()]
+        if events:
+            return events
+
+        event = self.pull_event(wait)
+        return [event] if event is not None else []
+
+    def clear_events(self) -> None:
+        """Clear current list of pending events."""
+        self._qmp.events.clear()
+
+    def close(self) -> None:
+        """Close the connection."""
+        self._sync(
+            self._qmp.disconnect()
+        )
+
+    def settimeout(self, timeout: Optional[float]) -> None:
+        """
+        Set the timeout for QMP RPC execution.
+
+        This timeout affects the `cmd`, `cmd_obj`, and `command` methods.
+        The `accept`, `pull_event` and `get_event` methods have their
+        own configurable timeouts.
+
+        :param timeout:
+            timeout in seconds, or None.
+            None will wait indefinitely.
+        """
+        self._timeout = timeout
+
+    def send_fd_scm(self, fd: int) -> None:
+        """
+        Send a file descriptor to the remote via SCM_RIGHTS.
+        """
+        self._qmp.send_fd_scm(fd)
+
+    def __del__(self) -> None:
+        if self._qmp.runstate == Runstate.IDLE:
+            return
+
+        if not self._aloop.is_running():
+            self.close()
+        else:
+            # Garbage collection ran while the event loop was running.
+            # Nothing we can do about it now, but if we don't raise our
+            # own error, the user will be treated to a lot of traceback
+            # they might not understand.
+            raise QMPError(
+                "QEMUMonitorProtocol.close()"
+                " was not called before object was garbage collected"
+            )
diff --git a/python/qemu/aqmp/message.py b/python/qemu/qmp/message.py
index f76ccc9074..f76ccc9074 100644
--- a/python/qemu/aqmp/message.py
+++ b/python/qemu/qmp/message.py
diff --git a/python/qemu/aqmp/models.py b/python/qemu/qmp/models.py
index de87f87804..de87f87804 100644
--- a/python/qemu/aqmp/models.py
+++ b/python/qemu/qmp/models.py
diff --git a/python/qemu/aqmp/protocol.py b/python/qemu/qmp/protocol.py
index 36fae57f27..6ea86650ad 100644
--- a/python/qemu/aqmp/protocol.py
+++ b/python/qemu/qmp/protocol.py
@@ -196,9 +196,9 @@ class AsyncProtocol(Generic[T]):
 
     :param name:
         Name used for logging messages, if any. By default, messages
-        will log to 'qemu.aqmp.protocol', but each individual connection
+        will log to 'qemu.qmp.protocol', but each individual connection
         can be given its own logger by giving it a name; messages will
-        then log to 'qemu.aqmp.protocol.${name}'.
+        then log to 'qemu.qmp.protocol.${name}'.
     """
     # pylint: disable=too-many-instance-attributes
 
diff --git a/python/qemu/aqmp/qmp_client.py b/python/qemu/qmp/qmp_client.py
index 90a8737f03..5dcda04a75 100644
--- a/python/qemu/aqmp/qmp_client.py
+++ b/python/qemu/qmp/qmp_client.py
@@ -192,7 +192,7 @@ class QMPClient(AsyncProtocol[Message], Events):
               await self.qmp.runstate_changed.wait()
               await self.disconnect()
 
-    See `aqmp.events` for more detail on event handling patterns.
+    See `qmp.events` for more detail on event handling patterns.
     """
     #: Logger object used for debugging messages.
     logger = logging.getLogger(__name__)
@@ -416,7 +416,7 @@ class QMPClient(AsyncProtocol[Message], Events):
 
     @upper_half
     def _get_exec_id(self) -> str:
-        exec_id = f"__aqmp#{self._execute_id:05d}"
+        exec_id = f"__qmp#{self._execute_id:05d}"
         self._execute_id += 1
         return exec_id
 
@@ -476,7 +476,7 @@ class QMPClient(AsyncProtocol[Message], Events):
         An execution ID will be assigned if assign_id is `True`. It can be
         disabled, but this requires that an ID is manually assigned
         instead. For manually assigned IDs, you must not use the string
-        '__aqmp#' anywhere in the ID.
+        '__qmp#' anywhere in the ID.
 
         :param msg: The QMP `Message` to execute.
         :param assign_id: If True, assign a new execution ID.
@@ -490,7 +490,7 @@ class QMPClient(AsyncProtocol[Message], Events):
             msg['id'] = self._get_exec_id()
         elif 'id' in msg:
             assert isinstance(msg['id'], str)
-            assert '__aqmp#' not in msg['id']
+            assert '__qmp#' not in msg['id']
 
         exec_id = await self._issue(msg)
         return await self._reply(exec_id)
@@ -512,7 +512,7 @@ class QMPClient(AsyncProtocol[Message], Events):
             Assign an arbitrary execution ID to this message. If
             `False`, the existing id must either be absent (and no other
             such pending execution may omit an ID) or a string. If it is
-            a string, it must not start with '__aqmp#' and no other such
+            a string, it must not start with '__qmp#' and no other such
             pending execution may currently be using that ID.
 
         :return: Execution reply from the server.
@@ -524,7 +524,7 @@ class QMPClient(AsyncProtocol[Message], Events):
             When assign_id is `False`, an ID is given, and it is not a string.
         :raise ValueError:
             When assign_id is `False`, but the ID is not usable;
-            Either because it starts with '__aqmp#' or it is already in-use.
+            Either because it starts with '__qmp#' or it is already in-use.
         """
         # 1. convert generic Mapping or bytes to a QMP Message
         # 2. copy Message objects so that we assign an ID only to the copy.
@@ -534,9 +534,9 @@ class QMPClient(AsyncProtocol[Message], Events):
         if not assign_id and 'id' in msg:
             if not isinstance(exec_id, str):
                 raise TypeError(f"ID ('{exec_id}') must be a string.")
-            if exec_id.startswith('__aqmp#'):
+            if exec_id.startswith('__qmp#'):
                 raise ValueError(
-                    f"ID ('{exec_id}') must not start with '__aqmp#'."
+                    f"ID ('{exec_id}') must not start with '__qmp#'."
                 )
 
         if not assign_id and exec_id in self._pending:
diff --git a/python/qemu/aqmp/qmp_shell.py b/python/qemu/qmp/qmp_shell.py
index 35691494d0..619ab42ced 100644
--- a/python/qemu/aqmp/qmp_shell.py
+++ b/python/qemu/qmp/qmp_shell.py
@@ -1,11 +1,12 @@
 #
-# Copyright (C) 2009, 2010 Red Hat Inc.
+# Copyright (C) 2009-2022 Red Hat Inc.
 #
 # Authors:
 #  Luiz Capitulino <lcapitulino@redhat.com>
+#  John Snow <jsnow@redhat.com>
 #
-# This work is licensed under the terms of the GNU GPL, version 2.  See
-# the COPYING file in the top-level directory.
+# This work is licensed under the terms of the GNU LGPL, version 2 or
+# later. See the COPYING file in the top-level directory.
 #
 
 """
@@ -97,8 +98,8 @@ from typing import (
     Sequence,
 )
 
-from qemu.aqmp import ConnectError, QMPError, SocketAddrT
-from qemu.aqmp.legacy import (
+from qemu.qmp import ConnectError, QMPError, SocketAddrT
+from qemu.qmp.legacy import (
     QEMUMonitorProtocol,
     QMPBadPortError,
     QMPMessage,
diff --git a/python/qemu/aqmp/aqmp_tui.py b/python/qemu/qmp/qmp_tui.py
index f1e926dd75..ce239d8979 100644
--- a/python/qemu/aqmp/aqmp_tui.py
+++ b/python/qemu/qmp/qmp_tui.py
@@ -3,16 +3,16 @@
 # Authors:
 #  Niteesh Babu G S <niteesh.gs@gmail.com>
 #
-# This work is licensed under the terms of the GNU GPL, version 2 or
+# This work is licensed under the terms of the GNU LGPL, version 2 or
 # later.  See the COPYING file in the top-level directory.
 """
-AQMP TUI
+QMP TUI
 
-AQMP TUI is an asynchronous interface built on top the of the AQMP library.
+QMP TUI is an asynchronous interface built on top the of the QMP library.
 It is the successor of QMP-shell and is bought-in as a replacement for it.
 
-Example Usage: aqmp-tui <SOCKET | TCP IP:PORT>
-Full Usage: aqmp-tui --help
+Example Usage: qmp-tui <SOCKET | TCP IP:PORT>
+Full Usage: qmp-tui --help
 """
 
 import argparse
@@ -35,9 +35,8 @@ from pygments import token as Token
 import urwid
 import urwid_readline
 
-from qemu.qmp import QEMUMonitorProtocol, QMPBadPortError
-
 from .error import ProtocolError
+from .legacy import QEMUMonitorProtocol, QMPBadPortError
 from .message import DeserializationError, Message, UnexpectedTypeError
 from .protocol import ConnectError, Runstate
 from .qmp_client import ExecInterruptedError, QMPClient
@@ -130,7 +129,7 @@ def has_handler_type(logger: logging.Logger,
 
 class App(QMPClient):
     """
-    Implements the AQMP TUI.
+    Implements the QMP TUI.
 
     Initializes the widgets and starts the urwid event loop.
 
@@ -613,7 +612,7 @@ def main() -> None:
     Driver of the whole script, parses arguments, initialize the TUI and
     the logger.
     """
-    parser = argparse.ArgumentParser(description='AQMP TUI')
+    parser = argparse.ArgumentParser(description='QMP TUI')
     parser.add_argument('qmp_server', help='Address of the QMP server. '
                         'Format <UNIX socket path | TCP addr:port>')
     parser.add_argument('--num-retries', type=int, default=10,
diff --git a/python/qemu/aqmp/util.py b/python/qemu/qmp/util.py
index eaa5fc7d5f..eaa5fc7d5f 100644
--- a/python/qemu/aqmp/util.py
+++ b/python/qemu/qmp/util.py
diff --git a/python/qemu/utils/qemu_ga_client.py b/python/qemu/utils/qemu_ga_client.py
index 15ed430c61..8c38a7ac9c 100644
--- a/python/qemu/utils/qemu_ga_client.py
+++ b/python/qemu/utils/qemu_ga_client.py
@@ -50,8 +50,8 @@ from typing import (
     Sequence,
 )
 
-from qemu.aqmp import ConnectError, SocketAddrT
-from qemu.aqmp.legacy import QEMUMonitorProtocol
+from qemu.qmp import ConnectError, SocketAddrT
+from qemu.qmp.legacy import QEMUMonitorProtocol
 
 
 # This script has not seen many patches or careful attention in quite
diff --git a/python/qemu/utils/qom.py b/python/qemu/utils/qom.py
index bb5d1a78f5..bcf192f477 100644
--- a/python/qemu/utils/qom.py
+++ b/python/qemu/utils/qom.py
@@ -32,7 +32,7 @@ QOM commands:
 
 import argparse
 
-from qemu.aqmp import ExecuteError
+from qemu.qmp import ExecuteError
 
 from .qom_common import QOMCommand
 
diff --git a/python/qemu/utils/qom_common.py b/python/qemu/utils/qom_common.py
index e034a6f247..80da1b2304 100644
--- a/python/qemu/utils/qom_common.py
+++ b/python/qemu/utils/qom_common.py
@@ -27,8 +27,8 @@ from typing import (
     TypeVar,
 )
 
-from qemu.aqmp import QMPError
-from qemu.aqmp.legacy import QEMUMonitorProtocol
+from qemu.qmp import QMPError
+from qemu.qmp.legacy import QEMUMonitorProtocol
 
 
 class ObjectPropertyInfo:
diff --git a/python/qemu/utils/qom_fuse.py b/python/qemu/utils/qom_fuse.py
index 653a76b93b..8dcd59fcde 100644
--- a/python/qemu/utils/qom_fuse.py
+++ b/python/qemu/utils/qom_fuse.py
@@ -48,7 +48,7 @@ from typing import (
 import fuse
 from fuse import FUSE, FuseOSError, Operations
 
-from qemu.aqmp import ExecuteError
+from qemu.qmp import ExecuteError
 
 from .qom_common import QOMCommand