def __init__(self, serializer):
"""
:param serializer: The object serializer to use for WAMP wire-level serialization.
:type serializer: An object that implements :class:`autobahn.interfaces.IObjectSerializer`.
"""
self._serializer = serializer
self._stats_reset = time_ns()
self._stats_cycle = 0
self._serialized_bytes = 0
self._serialized_messages = 0
self._serialized_rated_messages = 0
self._unserialized_bytes = 0
self._unserialized_messages = 0
self._unserialized_rated_messages = 0
self._autoreset_rated_messages = None
self._autoreset_duration = None
self._autoreset_callback = None
def serialize(self, msg):
"""
Implements :func:`autobahn.wamp.interfaces.ISerializer.serialize`
"""
data, is_binary = msg.serialize(
self._serializer), self._serializer.BINARY
# maintain statistics for serialized WAMP message data
self._serialized_bytes += len(data)
self._serialized_messages += 1
self._serialized_rated_messages += int(
math.ceil(float(len(data)) / self.RATED_MESSAGE_SIZE))
# maybe auto-reset and trigger user callback ..
if self._autoreset_callback and (
(self._autoreset_duration and
(time_ns() - self._stats_reset) >= self._autoreset_duration) or
(self._autoreset_rated_messages and
self.stats_rated_messages() >= self._autoreset_rated_messages)):
stats = self.stats(reset=True)
self._autoreset_callback(stats)
return data, is_binary
def unserialize(self, payload, isBinary=None):
"""
Implements :func:`autobahn.wamp.interfaces.ISerializer.unserialize`
"""
if isBinary is not None:
if isBinary != self._serializer.BINARY:
raise ProtocolError(
"invalid serialization of WAMP message (binary {0}, but expected {1})"
.format(isBinary, self._serializer.BINARY))
try:
raw_msgs = self._serializer.unserialize(payload)
except Exception as e:
raise ProtocolError(
"invalid serialization of WAMP message: {0} {1}".format(
type(e).__name__, e))
if self._serializer.NAME == u'flatbuffers':
msgs = raw_msgs
else:
msgs = []
for raw_msg in raw_msgs:
if type(raw_msg) != list:
raise ProtocolError(
"invalid type {0} for WAMP message".format(
type(raw_msg)))
if len(raw_msg) == 0:
raise ProtocolError(
u"missing message type in WAMP message")
message_type = raw_msg[0]
if type(message_type) not in six.integer_types:
# CBOR doesn't roundtrip number types
# https://bitbucket.org/bodhisnarkva/cbor/issues/6/number-types-dont-roundtrip
raise ProtocolError(
"invalid type {0} for WAMP message type".format(
type(message_type)))
Klass = self.MESSAGE_TYPE_MAP.get(message_type)
if Klass is None:
raise ProtocolError(
"invalid WAMP message type {0}".format(message_type))
# this might again raise `ProtocolError` ..
msg = Klass.parse(raw_msg)
msgs.append(msg)
# maintain statistics for unserialized WAMP message data
self._unserialized_bytes += len(payload)
self._unserialized_messages += len(msgs)
self._unserialized_rated_messages += int(
math.ceil(float(len(payload)) / self.RATED_MESSAGE_SIZE))
# maybe auto-reset and trigger user callback ..
if self._autoreset_callback and (
(self._autoreset_duration and
(time_ns() - self._stats_reset) >= self._autoreset_duration) or
(self._autoreset_rated_messages and
self.stats_rated_messages() >= self._autoreset_rated_messages)):
stats = self.stats(reset=True)
self._autoreset_callback(stats)
return msgs
def stats(self, reset=True, details=False):
"""
Get (and reset) serializer statistics.
:param reset: If ``True``, reset the serializer statistics.
:type reset: bool
:param details: If ``True``, return detailed statistics split up by serialization/unserialization.
:type details: bool
:return: Serializer statistics, eg:
.. code-block:: json
{
"timestamp": 1574156576688704693,
"duration": 34000000000,
"bytes": 0,
"messages": 0,
"rated_messages": 0
}
:rtype: dict
"""
assert (type(reset) == bool)
assert (type(details) == bool)
self._stats_cycle += 1
if details:
data = {
'cycle': self._stats_cycle,
'serializer': self.SERIALIZER_ID,
'timestamp': self._stats_reset,
'duration': time_ns() - self._stats_reset,
'serialized': {
'bytes': self._serialized_bytes,
'messages': self._serialized_messages,
'rated_messages': self._serialized_rated_messages,
},
'unserialized': {
'bytes': self._unserialized_bytes,
'messages': self._unserialized_messages,
'rated_messages': self._unserialized_rated_messages,
}
}
else:
data = {
'cycle':
self._stats_cycle,
'serializer':
self.SERIALIZER_ID,
'timestamp':
self._stats_reset,
'duration':
time_ns() - self._stats_reset,
'bytes':
self._serialized_bytes + self._unserialized_bytes,
'messages':
self._serialized_messages + self._unserialized_messages,
'rated_messages':
self._serialized_rated_messages +
self._unserialized_rated_messages,
}
if reset:
self._serialized_bytes = 0
self._serialized_messages = 0
self._serialized_rated_messages = 0
self._unserialized_bytes = 0
self._unserialized_messages = 0
self._unserialized_rated_messages = 0
self._stats_reset = time_ns()
return data