def marshal(self):
"""Marshals the BalanceIncrease according to the byte-level representation shown at
https://github.com/FactomProject/FactomDocs/blob/master/factomDataStructureDetails.md#balance-increase
"""
data = self.ec_public_key
data += self.tx_id
data += varint.encode(self.index)
data += varint.encode(self.quantity)
return data
def marshal(self):
"""
Marshal the object into its byte representation:
- the first byte is a length descriptor varint (8 at the maximum)
- next varint bytes is the descriptor height at which the output will not be created
- next varint bytes is the index into the specified descriptor that will not be created
:return: bytes representation of the CoinbaseDescriptorCancel message
"""
buf = bytearray()
bodybuf = bytearray()
bodybuf.extend(varint.encode(self.descriptor_height))
bodybuf.extend(varint.encode(self.descriptor_index))
buf.extend(varint.encode(len(bodybuf)))
buf.extend(bodybuf)
return bytes(buf)
def marshal(self) -> bytes:
buf = bytearray()
buf.extend(AdminBlockHeader.CHAIN_ID)
buf.extend(self.prev_back_reference_hash)
buf.extend(struct.pack(">I", self.height))
buf.extend(varint.encode(len(self.expansion_area)))
buf.extend(self.expansion_area)
buf.extend(struct.pack(">I", self.message_count))
buf.extend(struct.pack(">I", self.body_size))
return bytes(buf)
def marshal(self):
"""
Marshal the object into its byte representation:
- the first byte is a length descriptor varint (10232 at the maximum)
- next varint bytes is the descriptor height at which the output will not be created
- next varint bytes is the index into the specified descriptor that will not be created
The Coinbase Descriptor cannot be larger than 10233 bytes:
(1 AdminID byte + 2 varint length bytes + (10 KiB max FCT tx - 10 header bytes of coinbase))
:return: bytes representation of the CoinbaseDescriptor message
"""
buf = bytearray()
bodybuf = bytearray()
for output in self.outputs:
bodybuf.extend(varint.encode(output.get("value")))
bodybuf.extend(output.get("fct_address"))
buf.extend(varint.encode(len(bodybuf)))
buf.extend(bodybuf)
return bytes(buf)
def marshal(self) -> bytes:
buf = bytearray()
buf.extend(EntryCreditBlockHeader.CHAIN_ID)
buf.extend(self.body_hash)
buf.extend(self.prev_header_hash)
buf.extend(self.prev_full_hash)
buf.extend(struct.pack(">I", self.height))
buf.extend(varint.encode(len(self.expansion_area)))
buf.extend(self.expansion_area)
buf.extend(struct.pack(">Q", self.object_count))
buf.extend(struct.pack(">Q", self.body_size))
return bytes(buf)
def marshal_for_signature(self):
"""Marshals the transaction's header and partial body, in order to be signed by a key"""
buf = bytearray()
buf.append(0x02)
buf.extend(self.timestamp.to_bytes(6, "big", signed=False))
buf.append(len(self.inputs))
buf.append(len(self.outputs))
buf.append(len(self.ec_purchases))
for i in self.inputs:
value = i.get("value")
fct_address = i.get("fct_address")
buf.extend(varint.encode(value) + fct_address)
for o in self.outputs:
value = o.get("value")
fct_address = o.get("fct_address")
buf.extend(varint.encode(value) + fct_address)
for purchase in self.ec_purchases:
value = purchase.get("value")
ec_public_key = purchase.get("ec_public_key")
buf.extend(varint.encode(value) + ec_public_key)
return bytes(buf)
def marshal(self) -> bytes:
buf = bytearray()
buf.extend(FactoidBlockHeader.CHAIN_ID)
buf.extend(self.body_mr)
buf.extend(self.prev_keymr)
buf.extend(self.prev_ledger_keymr)
buf.extend(struct.pack(">Q", self.ec_exchange_rate))
buf.extend(struct.pack(">I", self.height))
buf.extend(varint.encode(len(self.expansion_area)))
buf.extend(self.expansion_area)
buf.extend(struct.pack(">I", self.tx_count))
buf.extend(struct.pack(">I", self.body_size))
return bytes(buf)
def marshal(self) -> bytes:
"""
Marshal the message into the following representation:
- first byte is the message type (always 1)
- next byte is the vm index
- next 6 bytes are the timestamp
- next 8 bytes are the salt
- next 4 bytes are the salt number
- next 32 bytes are the message hash being acknowledged
- next 32 bytes are the full message hash
- next 32 bytes are the leader chain id
- next 4 bytes are the directory block height
- next 4 bytes are the process list height TODO: is this actually the process list height?
- next byte is the minute
- next 32 bytes are the serial hash
- next varint bytes are the data area size
- next X bytes are the data area:
- TODO: unmarshal the data area in Ack message
- next 32 bytes are the public key
- next 64 bytes are the signature
:return: byte representation of the message
"""
buf = bytearray()
buf.append(self.TYPE)
buf.append(self.vm_index)
buf.extend(self.timestamp)
buf.extend(self.salt)
buf.extend(struct.pack(">I", self.salt_number))
buf.extend(self.message_hash)
buf.extend(self.full_message_hash)
buf.extend(self.leader_chain_id)
buf.extend(struct.pack(">I", self.height))
buf.extend(struct.pack(">I", self.process_list_height))
buf.append(self.minute)
buf.extend(self.serial_hash)
buf.extend(varint.encode(len(self.data_area)))
buf.extend(self.data_area)
buf.extend(self.signature.marshal())
return bytes(buf)
def test_encode(self):
for value_int, expected_varint in TestVarInt.mapping.items():
observed_varint = varint.encode(value_int)
assert observed_varint == expected_varint, "{}: 0x{} != 0x{}".format(
value_int, observed_varint.hex(), expected_varint.hex())
