def convert_to_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_OLD_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected new message type to v6: {msg_type}"
)
old_version_msg_class = self._MSG_TYPE_TO_OLD_MSG_CLASS_MAPPING[
msg_type]
old_version_payload_len = (msg.payload_len() -
constants.TRANSACTION_FLAG_LEN -
constants.DOUBLE_SIZE_IN_BYTES)
old_version_msg_bytes = bytearray(
self._LEFT_BREAKPOINT +
len(msg.rawbytes()[self._RIGHT_BREAKPOINT:]))
old_version_msg_bytes[:self._LEFT_BREAKPOINT] = msg.rawbytes(
)[:self._LEFT_BREAKPOINT]
old_version_msg_bytes[self._LEFT_BREAKPOINT:] = msg.rawbytes(
)[self._RIGHT_BREAKPOINT:]
struct.pack_into(
"<12sL",
old_version_msg_bytes,
AbstractBloxrouteMessage.STARTING_BYTES_LEN,
msg_type,
old_version_payload_len,
)
return AbstractBloxrouteMessage.initialize_class(
old_version_msg_class,
old_version_msg_bytes,
(msg_type, old_version_payload_len),
)
def convert_from_older_version(
self, msg: AbstractInternalMessage
) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected old message type to "
f"v7: {msg_type}"
)
new_msg_class = self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING[msg_type]
new_payload_len = (
msg.payload_len() +
constants.QUOTA_FLAG_LEN +
constants.UL_INT_SIZE_IN_BYTES
)
new_msg_bytes = bytearray(
AbstractBloxrouteMessage.HEADER_LENGTH + new_payload_len
)
new_msg_bytes[: self._LEFT_BREAKPOINT] = msg.rawbytes()[
: self._LEFT_BREAKPOINT
]
struct.pack_into("<B", new_msg_bytes, self._LEFT_BREAKPOINT, 0)
struct.pack_into("<L", new_msg_bytes, self._LEFT_BREAKPOINT, 0)
new_msg_bytes[self._RIGHT_BREAKPOINT :] = msg.rawbytes()[
self._LEFT_BREAKPOINT :
]
return AbstractBloxrouteMessage.initialize_class(
new_msg_class, new_msg_bytes, (msg_type, new_payload_len)
)
def convert_from_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected old message type to v9: {msg_type}"
)
new_msg_class = self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING[msg_type]
new_payload_len = msg.payload_len() + constants.BROADCAST_TYPE_LEN
new_msg_bytes = bytearray(AbstractBloxrouteMessage.HEADER_LENGTH +
new_payload_len)
new_msg_bytes[:self._BASE_LENGTH] = msg.rawbytes()[:self._BASE_LENGTH]
struct.pack_into(
"<4s",
new_msg_bytes,
self._BASE_LENGTH,
# pylint: disable=no-member
BroadcastMessageType.BLOCK.value.encode(
constants.DEFAULT_TEXT_ENCODING))
new_msg_bytes[self._BREAKPOINT:] = msg.rawbytes()[self._BASE_LENGTH:]
return AbstractBloxrouteMessage.initialize_class(
new_msg_class, new_msg_bytes, (msg_type, new_payload_len))
def convert_to_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_OLD_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected new message type to v8: {msg_type}"
)
old_version_msg_class = self._MSG_TYPE_TO_OLD_MSG_CLASS_MAPPING[
msg_type]
old_version_payload_len = msg.payload_len(
) - constants.BROADCAST_TYPE_LEN
old_version_msg_bytes = bytearray(
self._BASE_LENGTH + len(msg.rawbytes()[self._BREAKPOINT:]))
old_version_msg_bytes[:self._BASE_LENGTH] = msg.rawbytes(
)[:self._BASE_LENGTH]
old_version_msg_bytes[self._BASE_LENGTH:] = msg.rawbytes(
)[self._BREAKPOINT:]
return AbstractBloxrouteMessage.initialize_class(
old_version_msg_class,
old_version_msg_bytes,
(msg_type, old_version_payload_len),
)
def convert_from_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected old message type to v6: {msg_type}"
)
new_msg_class = self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING[msg_type]
new_payload_len = msg.payload_len() + constants.NODE_ID_SIZE_IN_BYTES
new_msg_bytes = bytearray(AbstractBloxrouteMessage.HEADER_LENGTH +
new_payload_len)
new_msg_bytes[:self._LEFT_BREAKPOINT] = msg.rawbytes(
)[:self._LEFT_BREAKPOINT]
new_msg_bytes[self._RIGHT_BREAKPOINT:] = msg.rawbytes(
)[self._LEFT_BREAKPOINT:]
# pack empty source id for old gateways, since message converters are singletons
# and source ids for gateway don't matter anyway
struct.pack_into("<16s", new_msg_bytes, self._LEFT_BREAKPOINT,
uuid_pack.to_bytes(""))
return AbstractBloxrouteMessage.initialize_class(
new_msg_class, new_msg_bytes, (msg_type, new_payload_len))
def convert_from_older_version(
self, msg: AbstractInternalMessage
) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected old message type from v16: {msg_type}"
)
new_msg_class = self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING[msg_type]
new_payload_len = msg.payload_len() + self._LENGTH_DIFFERENCE
new_msg_bytes = bytearray(self._NEW_MESSAGE_LEN)
new_msg_bytes[:self._INTERVAL_TIMES_BREAKPOINT] = msg.rawbytes()[:self._INTERVAL_TIMES_BREAKPOINT]
off = self._BASE_LENGTH + self._INTERVAL_TIMES_LENGTH
new_msg_bytes[off:off + self._MEMORY_UTILIZATION_LENGTH] = \
msg.rawbytes()[
self._FIRST_STATS_SETS_BREAKPOINT:self._FIRST_STATS_SETS_BREAKPOINT + self._MEMORY_UTILIZATION_LENGTH
]
off += self._MEMORY_UTILIZATION_LENGTH
# single blockchain peer
struct.pack_into("<H", new_msg_bytes, off, 1)
off += constants.UL_SHORT_SIZE_IN_BYTES
# placeholder ip/port
message_utils.pack_ip_port(new_msg_bytes, off, "0.0.0.0", 0)
off += constants.IP_ADDR_SIZE_IN_BYTES + constants.UL_SHORT_SIZE_IN_BYTES
new_msg_bytes[off:off + self._FIRST_STATS_SETS_LENGTH] = \
msg.rawbytes()[
self._INTERVAL_TIMES_BREAKPOINT:self._INTERVAL_TIMES_BREAKPOINT + self._FIRST_STATS_SETS_LENGTH
]
off += self._FIRST_STATS_SETS_LENGTH
new_msg_bytes[off:off + self._SECOND_STATS_SET_LENGTH] = \
msg.rawbytes()[
self._MEMORY_UTILIZATION_BREAKPOINT:self._MEMORY_UTILIZATION_BREAKPOINT + self._SECOND_STATS_SET_LENGTH
]
off += self._SECOND_STATS_SET_LENGTH
default_new_stats = 0
struct.pack_into("<I", new_msg_bytes, off, default_new_stats)
off += constants.UL_INT_SIZE_IN_BYTES
struct.pack_into("<I", new_msg_bytes, off, default_new_stats)
off += constants.UL_INT_SIZE_IN_BYTES
new_msg_bytes[off:] = msg.rawbytes()[self._SECOND_STATS_SET_BREAKPOINT:]
return AbstractBloxrouteMessage.initialize_class(
new_msg_class,
new_msg_bytes,
(msg_type, new_payload_len)
)
def convert_from_older_version(
self, msg: AbstractInternalMessage
) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected old message type from v18: {msg_type}"
)
if len(msg.rawbytes()) == self._MESSAGE_LEN_WITHOUT_NODE_STATS:
# per Endpoint Stats is not available
length_difference = 0
new_message_len = self._MESSAGE_LEN_WITHOUT_NODE_STATS
num_blockchain_peers = 0
else:
num_blockchain_peers, = struct.unpack_from("<I", msg.rawbytes(), self._MEMORY_UTILIZATION_BREAKPOINT)
length_difference = self._NODE_STATS_LENGTH_DIFFERENCE * num_blockchain_peers
new_message_len = self._MESSAGE_LEN_WITHOUT_NODE_STATS + \
(num_blockchain_peers * self._NEW_MESSAGE_NODE_STATS_LEN)
new_msg_class = self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING[msg_type]
new_payload_len = msg.payload_len() + length_difference
new_msg_bytes = bytearray(new_message_len)
new_msg_bytes[:self._NUM_BLOCKCHAIN_PEERS_BREAKPOINT] = msg.rawbytes()[:self._NUM_BLOCKCHAIN_PEERS_BREAKPOINT]
new_msg_off = self._NUM_BLOCKCHAIN_PEERS_BREAKPOINT
old_msg_off = self._NUM_BLOCKCHAIN_PEERS_BREAKPOINT
default_new_stats = 0
for _ in range(num_blockchain_peers):
new_msg_bytes[new_msg_off:new_msg_off + self._OLD_MESSAGE_NODE_STATS_LEN] = \
msg.rawbytes()[old_msg_off:old_msg_off + self._OLD_MESSAGE_NODE_STATS_LEN]
new_msg_off += self._OLD_MESSAGE_NODE_STATS_LEN
old_msg_off += self._OLD_MESSAGE_NODE_STATS_LEN
struct.pack_into("<I", new_msg_bytes, new_msg_off, default_new_stats)
new_msg_off += constants.UL_INT_SIZE_IN_BYTES
struct.pack_into("<I", new_msg_bytes, new_msg_off, default_new_stats)
new_msg_off += constants.UL_INT_SIZE_IN_BYTES
new_msg_bytes[new_msg_off:] = msg.rawbytes()[old_msg_off:]
return AbstractBloxrouteMessage.initialize_class(
new_msg_class,
new_msg_bytes,
(msg_type, new_payload_len)
)
def convert_from_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected old message type from v10: {msg_type}"
)
new_msg_class = self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING[msg_type]
new_payload_len = msg.payload_len() + self._LENGTH_DIFFERENCE
new_msg_bytes = bytearray(self._NEW_MESSAGE_LEN)
new_msg_bytes[:self._BREAKPOINT] = msg.rawbytes()[:self._BREAKPOINT]
new_msg_bytes[self._BREAKPOINT +
self._LENGTH_DIFFERENCE:] = msg.rawbytes()[self.
_BREAKPOINT:]
return AbstractBloxrouteMessage.initialize_class(
new_msg_class, new_msg_bytes, (msg_type, new_payload_len))
def convert_to_older_version(
self, msg: AbstractInternalMessage
) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_OLD_MSG_CLASS_MAPPING:
raise ValueError(
f"Tried to convert unexpected new "
f"message type to v7: {msg_type}"
)
old_version_msg_class = self._MSG_TYPE_TO_OLD_MSG_CLASS_MAPPING[
msg_type
]
old_version_payload_len = (
msg.payload_len()
- constants.QUOTA_FLAG_LEN
- constants.UL_INT_SIZE_IN_BYTES
)
old_version_msg_bytes = bytearray(
self._LEFT_BREAKPOINT
+ len(msg.rawbytes()[self._RIGHT_BREAKPOINT :])
)
old_version_msg_bytes[: self._LEFT_BREAKPOINT] = msg.rawbytes()[
: self._LEFT_BREAKPOINT
]
old_version_msg_bytes[self._LEFT_BREAKPOINT :] = msg.rawbytes()[
self._RIGHT_BREAKPOINT :
]
return AbstractBloxrouteMessage.initialize_class(
old_version_msg_class,
old_version_msg_bytes,
(msg_type, old_version_payload_len),
)
def convert_to_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
if not isinstance(msg, GatewayHelloMessageV2):
raise TypeError("GatewayHelloMessage is expected")
msg_bytes = msg.rawbytes()
mem_view = memoryview(msg_bytes)
result_bytes = bytearray(
len(msg_bytes) - GatewayHelloMessageV2.ADDITIONAL_LENGTH)
payload_len = GatewayHelloMessageV1.PAYLOAD_LENGTH
result_bytes[:] = mem_view[:len(msg_bytes) -
GatewayHelloMessageV2.ADDITIONAL_LENGTH]
return AbstractBloxrouteMessage.initialize_class(
GatewayHelloMessageV1, result_bytes,
(GatewayMessageType.HELLO, payload_len))
def convert_from_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
if not isinstance(msg, GatewayHelloMessageV1):
raise TypeError("GatewayHelloMessageV1 is expected")
msg_bytes = msg.rawbytes()
mem_view = memoryview(msg_bytes)
result_bytes = bytearray(
len(msg_bytes) + constants.NODE_ID_SIZE_IN_BYTES)
payload_len = GatewayHelloMessageV2.PAYLOAD_LENGTH
off = 0
result_bytes[off:len(msg_bytes)] = mem_view[:]
off = len(msg_bytes)
struct.pack_into("%ss" % constants.NODE_ID_SIZE_IN_BYTES, result_bytes,
off, b'')
return AbstractBloxrouteMessage.initialize_class(
GatewayHelloMessageV2, result_bytes,
(GatewayMessageType.HELLO, payload_len))
def convert_to_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_OLD_MSG_CLASS_MAPPING:
raise ValueError(
f"Unexpected got message of type {msg_type}. Could not convert to version 4."
)
old_version_msg_class = self._MSG_TYPE_TO_OLD_MSG_CLASS_MAPPING[
msg_type]
old_version_payload_len = msg.payload_len(
) - constants.CONTROL_FLAGS_LEN
old_version_msg_bytes = msg.rawbytes(
)[constants.STARTING_SEQUENCE_BYTES_LEN:-constants.CONTROL_FLAGS_LEN]
struct.pack_into("<12sL", old_version_msg_bytes, 0, msg_type,
old_version_payload_len)
return MessageV4.initialize_class(old_version_msg_class,
old_version_msg_bytes,
(msg_type, old_version_payload_len))
def convert_from_older_version(
self, msg: AbstractInternalMessage) -> AbstractInternalMessage:
msg_type = msg.MESSAGE_TYPE
if msg_type not in self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING:
raise ValueError(
f"Unexpected got message of type {msg_type}. Could not convert to current version."
)
new_msg_class = self._MSG_TYPE_TO_NEW_MSG_CLASS_MAPPING[msg_type]
new_payload_len = msg.payload_len() + constants.CONTROL_FLAGS_LEN
new_msg_bytes = bytearray(AbstractBloxrouteMessage.HEADER_LENGTH +
new_payload_len)
new_msg_bytes[:constants.
STARTING_SEQUENCE_BYTES_LEN] = constants.STARTING_SEQUENCE_BYTES
struct.pack_into("<12sL", new_msg_bytes,
constants.STARTING_SEQUENCE_BYTES_LEN, msg_type,
new_payload_len)
new_msg_bytes[constants.STARTING_SEQUENCE_BYTES_LEN:-constants.
CONTROL_FLAGS_LEN] = msg.rawbytes()
new_msg_bytes[-1] = BloxrouteMessageControlFlags.VALID
return AbstractBloxrouteMessage.initialize_class(
new_msg_class, new_msg_bytes, (msg_type, new_payload_len))
