def consume_in_thread(self):
"""Runs the ZmqProxy service."""
ipc_dir = CONF.rpc_zmq_ipc_dir
consume_in = "tcp://%s:%s" % \
(CONF.rpc_zmq_bind_address,
CONF.rpc_zmq_port)
consumption_proxy = InternalContext(None)
try:
os.makedirs(ipc_dir)
except os.error:
if not os.path.isdir(ipc_dir):
with excutils.save_and_reraise_exception():
LOG.error(_LE("Required IPC directory does not exist at"
" %s") % (ipc_dir, ))
try:
self.register(consumption_proxy,
consume_in,
zmq.PULL)
except zmq.ZMQError:
if os.access(ipc_dir, os.X_OK):
with excutils.save_and_reraise_exception():
LOG.error(_LE("Permission denied to IPC directory at"
" %s") % (ipc_dir, ))
with excutils.save_and_reraise_exception():
LOG.error(_LE("Could not create ZeroMQ receiver daemon. "
"Socket may already be in use."))
super(ZmqProxy, self).consume_in_thread()
def test_save_and_reraise_exception_no_reraise(self):
"""Test that suppressing the reraise works."""
try:
raise Exception('foo')
except Exception:
with excutils.save_and_reraise_exception() as ctxt:
ctxt.reraise = False
def test_save_and_reraise_exception_no_reraise(self):
"""Test that suppressing the reraise works."""
try:
raise Exception('foo')
except Exception:
with excutils.save_and_reraise_exception() as ctxt:
ctxt.reraise = False
def _serialize(data):
"""Serialization wrapper.
We prefer using JSON, but it cannot encode all types.
Error if a developer passes us bad data.
"""
try:
return jsonutils.dumps(data, ensure_ascii=True)
except TypeError:
with excutils.save_and_reraise_exception():
LOG.error(_LE("JSON serialization failed."))
def test_save_and_reraise_exception(self):
e = None
msg = 'foo'
try:
try:
raise Exception(msg)
except Exception:
with excutils.save_and_reraise_exception():
pass
except Exception as _e:
e = _e
self.assertEqual(str(e), msg)
def test_save_and_reraise_exception(self):
e = None
msg = 'foo'
try:
try:
raise Exception(msg)
except Exception:
with excutils.save_and_reraise_exception():
pass
except Exception as _e:
e = _e
self.assertEqual(str(e), msg)
def remove_path_on_error(path, remove=delete_if_exists):
"""Protect code that wants to operate on PATH atomically.
Any exception will cause PATH to be removed.
:param path: File to work with
:param remove: Optional function to remove passed path
"""
try:
yield
except Exception:
with excutils.save_and_reraise_exception():
remove(path)
def test_save_and_reraise_exception_dropped_no_reraise(self):
e = None
msg = 'second exception'
with mock.patch('logging.error') as log:
try:
try:
raise Exception('dropped')
except Exception:
with excutils.save_and_reraise_exception(reraise=False):
raise Exception(msg)
except Exception as _e:
e = _e
self.assertEqual(str(e), msg)
self.assertFalse(log.called)
def test_save_and_reraise_exception_dropped_no_reraise(self):
e = None
msg = 'second exception'
with mock.patch('logging.error') as log:
try:
try:
raise Exception('dropped')
except Exception:
with excutils.save_and_reraise_exception(reraise=False):
raise Exception(msg)
except Exception as _e:
e = _e
self.assertEqual(str(e), msg)
self.assertFalse(log.called)
def __iter__(self):
"""Return a result until we get a reply with an 'ending' flag."""
if self._done:
raise StopIteration
while True:
try:
data = self._dataqueue.get(timeout=self._timeout)
result = self._process_data(data)
except queue.Empty:
self.done()
raise rpc_common.Timeout()
except Exception:
with excutils.save_and_reraise_exception():
self.done()
if self._got_ending:
self.done()
raise StopIteration
if isinstance(result, Exception):
self.done()
raise result
yield result