From 2ca6e26cea73fa1d270f73392e8b87f3e67e6a2b Mon Sep 17 00:00:00 2001 From: Cleber Rosa Date: Thu, 11 Feb 2021 17:01:42 -0500 Subject: [PATCH] Python: expose QEMUMachine's temporary directory Each instance of qemu.machine.QEMUMachine currently has a "test directory", which may not have any relation to a "test", and it's really a temporary directory. Users instantiating the QEMUMachine class will be able to set the location of the directory that will *contain* the QEMUMachine unique temporary directory, so that parameter name has been changed from test_dir to base_temp_dir. A property has been added to allow users to access it without using private attributes, and with that, the directory is created on first use of the property. Signed-off-by: Cleber Rosa Message-Id: <20210211220146.2525771-3-crosa@redhat.com> Reviewed-by: Wainer dos Santos Moschetta Signed-off-by: Cleber Rosa Signed-off-by: John Snow --- python/qemu/machine.py | 24 ++++++++++++++++-------- python/qemu/qtest.py | 6 +++--- tests/qemu-iotests/iotests.py | 2 +- 3 files changed, 20 insertions(+), 12 deletions(-) diff --git a/python/qemu/machine.py b/python/qemu/machine.py index 6e44bda337..b379fcbe72 100644 --- a/python/qemu/machine.py +++ b/python/qemu/machine.py @@ -84,7 +84,7 @@ class QEMUMachine: args: Sequence[str] = (), wrapper: Sequence[str] = (), name: Optional[str] = None, - test_dir: str = "/var/tmp", + base_temp_dir: str = "/var/tmp", monitor_address: Optional[SocketAddrT] = None, socket_scm_helper: Optional[str] = None, sock_dir: Optional[str] = None, @@ -97,10 +97,10 @@ class QEMUMachine: @param args: list of extra arguments @param wrapper: list of arguments used as prefix to qemu binary @param name: prefix for socket and log file names (default: qemu-PID) - @param test_dir: where to create socket and log file + @param base_temp_dir: default location where temporary files are created @param monitor_address: address for QMP monitor @param socket_scm_helper: helper program, required for send_fd_scm() - @param sock_dir: where to create socket (overrides test_dir for sock) + @param sock_dir: where to create socket (defaults to base_temp_dir) @param drain_console: (optional) True to drain console socket to buffer @param console_log: (optional) path to console log file @note: Qemu process is not started until launch() is used. @@ -112,8 +112,8 @@ class QEMUMachine: self._wrapper = wrapper self._name = name or "qemu-%d" % os.getpid() - self._test_dir = test_dir - self._sock_dir = sock_dir or self._test_dir + self._base_temp_dir = base_temp_dir + self._sock_dir = sock_dir or self._base_temp_dir self._socket_scm_helper = socket_scm_helper if monitor_address is not None: @@ -303,9 +303,7 @@ class QEMUMachine: return args def _pre_launch(self) -> None: - self._temp_dir = tempfile.mkdtemp(prefix="qemu-machine-", - dir=self._test_dir) - self._qemu_log_path = os.path.join(self._temp_dir, self._name + ".log") + self._qemu_log_path = os.path.join(self.temp_dir, self._name + ".log") self._qemu_log_file = open(self._qemu_log_path, 'wb') if self._console_set: @@ -744,3 +742,13 @@ class QEMUMachine: file=self._console_log_path, drain=self._drain_console) return self._console_socket + + @property + def temp_dir(self) -> str: + """ + Returns a temporary directory to be used for this machine + """ + if self._temp_dir is None: + self._temp_dir = tempfile.mkdtemp(prefix="qemu-machine-", + dir=self._base_temp_dir) + return self._temp_dir diff --git a/python/qemu/qtest.py b/python/qemu/qtest.py index 39a0cf62fe..78b97d13cf 100644 --- a/python/qemu/qtest.py +++ b/python/qemu/qtest.py @@ -112,14 +112,14 @@ class QEMUQtestMachine(QEMUMachine): binary: str, args: Sequence[str] = (), name: Optional[str] = None, - test_dir: str = "/var/tmp", + base_temp_dir: str = "/var/tmp", socket_scm_helper: Optional[str] = None, sock_dir: Optional[str] = None): if name is None: name = "qemu-%d" % os.getpid() if sock_dir is None: - sock_dir = test_dir - super().__init__(binary, args, name=name, test_dir=test_dir, + sock_dir = base_temp_dir + super().__init__(binary, args, name=name, base_temp_dir=base_temp_dir, socket_scm_helper=socket_scm_helper, sock_dir=sock_dir) self._qtest: Optional[QEMUQtestProtocol] = None diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py index 777fa2ec0e..92681907ed 100644 --- a/tests/qemu-iotests/iotests.py +++ b/tests/qemu-iotests/iotests.py @@ -571,7 +571,7 @@ class VM(qtest.QEMUQtestMachine): def __init__(self, path_suffix=''): name = "qemu%s-%d" % (path_suffix, os.getpid()) super().__init__(qemu_prog, qemu_opts, name=name, - test_dir=test_dir, + base_temp_dir=test_dir, socket_scm_helper=socket_scm_helper, sock_dir=sock_dir) self._num_drives = 0