def _generate_cancel_lease_transaction(self, transaction_id, transaction_fee, timestamp):
"""
Prepare data for cancel lease transaction
:param transaction_id:
:param transaction_fee:
:param timestamp:
:return:
"""
if timestamp == 0:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
sign_data = [
TRANSACTION_TYPE_CANCEL_LEASE.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
struct.pack(">Q", transaction_fee),
struct.pack(">Q", timestamp_param),
base58.b58decode(transaction_id),
]
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
transaction_data = {
"senderPublicKey": self.public_key,
"txId": transaction_id,
"fee": transaction_fee,
"timestamp": timestamp_param,
"signature": signature
}
return transaction_data
def _generate_asset_burn_transaction(self, asset_id, quantity, transaction_fee, timestamp):
"""
Prepare asset reissue transaction data
:param asset_id:
:param quantity:
:param reissuable:
:param timestamp:
:return:
"""
if timestamp == 0:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
sign_data = [
TRANSACTION_TYPE_BURN.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
base58.b58decode(asset_id),
struct.pack(">Q", quantity),
struct.pack(">Q", transaction_fee),
struct.pack(">Q", timestamp_param)
]
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
transaction_data = {
"senderPublicKey": self.public_key,
"assetId": asset_id,
"quantity": quantity,
"timestamp": timestamp_param,
"fee": transaction_fee,
"signature": signature
}
return transaction_data
def _generate_alias_transaction(self, alias, transaction_fee, timestamp):
"""
Prepare data for alias transaction
:return:
"""
if timestamp == 0:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
alias_data = b''.join((
b'\x02', self.chain_id.encode('latin-1'), struct.pack(">H", len(alias)), alias.encode('latin-1')
))
sign_data = [
TRANSACTION_TYPE_ALIAS.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
struct.pack(">H", len(alias_data)),
alias_data,
struct.pack(">Q", transaction_fee),
struct.pack(">Q", timestamp_param),
]
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
transaction_data = {
"senderPublicKey": self.public_key,
"alias": alias,
"fee": transaction_fee,
"timestamp": timestamp_param,
"signature": signature,
}
return transaction_data
def _generate_set_asset_script_transaction(self, script, asset_id, transaction_fee, timestamp, version):
"""
Generate set script transaction data
:param asset_id:
:param script:
:param transaction_fee:
:return:
"""
if not timestamp:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
script_bytes = base64.b64decode(script)
sign_data = [
TRANSACTION_TYPE_SET_ASSET_SCRIPT.to_bytes(1, 'big'),
version.to_bytes(1, 'big'),
self.chain_id.encode('latin-1'),
base58.b58decode(self.public_key),
base58.b58decode(asset_id),
struct.pack(">Q", transaction_fee),
struct.pack(">Q", timestamp_param),
b'\1',
struct.pack(">H", len(script_bytes)),
script_bytes,
]
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
transaction_data = {
"type": TRANSACTION_TYPE_SET_ASSET_SCRIPT,
"version": version,
"assetId": asset_id,
"senderPublicKey": self.public_key,
"fee": transaction_fee,
"timestamp": timestamp_param,
"script": 'base64:' + script,
"proofs": [signature]
}
return transaction_data
def _generate_lease_transaction(self, recipient, amount, transaction_fee, timestamp):
"""
Prepare data for lease transaction
:param recipient:
:param amount:
:param transaction_fee:
:param timestamp:
:return:
"""
if isinstance(recipient, WavesAddress):
recipient_address = recipient.value
else:
recipient_address = recipient
if timestamp == 0:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
sign_data = [
TRANSACTION_TYPE_LEASE.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
base58.b58decode(recipient_address),
struct.pack(">Q", amount),
struct.pack(">Q", transaction_fee),
struct.pack(">Q", timestamp_param),
]
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
transaction_data = {
"senderPublicKey": self.public_key,
"recipient": recipient_address,
"amount": amount,
"fee": transaction_fee,
"timestamp": timestamp_param,
"signature": signature
}
return transaction_data
def _generate_asset_sponsorship_transaction(self, asset_id, min_sponsored_asset_fee, transaction_fee, timestamp):
"""
Prepare data for sponsorship transaction
:param asset_id:
:param min_sponsored_asset_fee:
:param transaction_fee:
:param timestamp:
:return:
"""
if timestamp == 0:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
version = 1
sign_data = [
TRANSACTION_TYPE_SPONSORSHIP.to_bytes(1, 'big'),
version.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
base58.b58decode(asset_id),
struct.pack(">Q", min_sponsored_asset_fee),
struct.pack(">Q", transaction_fee),
struct.pack(">Q", timestamp_param),
]
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
transaction_data = {
"type": TRANSACTION_TYPE_SPONSORSHIP,
"version": version,
"senderPublicKey": self.public_key,
"assetId": asset_id,
"fee": transaction_fee,
"timestamp": timestamp_param,
"minSponsoredAssetFee": min_sponsored_asset_fee,
"proofs": [signature]
}
return transaction_data
def _generate_mass_transfer_transaction(self, transfer_data, asset_id, attachment, version, timestamp):
"""
Setup mass transfer transaction data
:param transfer_data:
:param attachment:
:param timestamp:
:return:
"""
if not timestamp:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
if not attachment:
encoded_attachment = b''
else:
encoded_attachment = attachment.encode('latin-1')
mass_fee = 100000 + math.ceil(0.5 * len(transfer_data)) * 100000
recipients_sign_data = []
for recipient_data in transfer_data:
recipients_sign_data.append(base58.b58decode(recipient_data['recipient']))
recipients_sign_data.append(struct.pack(">Q", recipient_data['amount']))
sign_data = [
TRANSACTION_TYPE_MASS_TRANSFER.to_bytes(1, 'big'),
version.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
b'\0', # for default asset (Waves)
struct.pack(">H", len(transfer_data)),
b''.join(recipients_sign_data),
struct.pack(">Q", timestamp_param),
struct.pack(">Q", mass_fee),
struct.pack(">H", len(encoded_attachment)),
encoded_attachment
]
if asset_id:
sign_data[3] = b'\1'
sign_data.insert(4, base58.b58decode(asset_id))
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
transaction_data = {
"type": TRANSACTION_TYPE_MASS_TRANSFER,
"version": 1,
"assetId": asset_id or "",
"senderPublicKey": self.public_key,
"fee": mass_fee,
"timestamp": timestamp_param,
"transfers": transfer_data,
"attachment": base58.b58encode(encoded_attachment).decode(),
"signature": signature,
"proofs": [
signature
]
}
return transaction_data
def _generate_data_transaction(self, data, fee=0, version=1, timestamp=0):
"""
Prepare data for data transaction
:return:
"""
if not timestamp:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
data_buffer = []
for item in data:
key_encoded = item['key'].encode('latin-1')
data_buffer.extend([struct.pack(">H", len(key_encoded)), key_encoded])
if item['type'] == 'integer':
item_value = [
DATA_TRANSACTION_INT_TYPE.to_bytes(1, 'big'),
struct.pack(">Q", item['value'])
]
elif item['type'] == 'boolean':
item_value = [
DATA_TRANSACTION_BOOLEAN_TYPE.to_bytes(1, 'big'),
item['value'].to_bytes(1, 'big')
]
elif item['type'] == 'binary':
item_value = [
DATA_TRANSACTION_STRING_TYPE.to_bytes(1, 'big'),
struct.pack(">H", len(item['value'])),
item['value']
]
item['value'] = "base64:" + base64.b64encode(item['value']).decode('latin-1')
elif item['type'] == 'string':
item_value = [
DATA_TRANSACTION_BINARY_TYPE.to_bytes(1, 'big'),
struct.pack(">H", len(item['value'])),
item['value'].encode('latin-1')
]
else:
raise ValueError("Unknown data type: '{}'".format(item['type']))
data_buffer.extend(item_value)
if not fee:
transaction_fee = int(math.floor(1 + (len(json.dumps(data)) + 8 - 1) / 1024) *
DEFAULT_DATA_TRANSACTION_FEE_MULTIPLICATOR)
else:
transaction_fee = fee
sign_data = [
TRANSACTION_TYPE_DATA.to_bytes(1, 'big'),
version.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
struct.pack(">H", len(data)),
b''.join(data_buffer),
struct.pack(">Q", timestamp_param),
struct.pack(">Q", transaction_fee),
]
transaction_data = {
"type": TRANSACTION_TYPE_DATA,
"version": version,
"senderPublicKey": self.public_key,
"data": data,
"fee": transaction_fee,
"timestamp": timestamp_param,
"proofs": [sign_with_private_key(self.private_key, b''.join(sign_data))]
}
return transaction_data
def _generate_asset_issue_transaction(self, name, description, quantity, decimals, reissuable, transaction_fee,
script, version, timestamp):
"""
Prepare asset issue transaction data
:param name:
:param description:
:param quantity:
:param decimals:
:param reissuable:
:param version
:param timestamp:
:return:
"""
if not timestamp:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
sign_data = [
TRANSACTION_TYPE_ISSUE.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
struct.pack(">H", len(name)),
name.encode('latin-1'),
struct.pack(">H", len(description)),
description.encode('latin-1'),
struct.pack(">Q", quantity),
struct.pack(">B", decimals),
reissuable.to_bytes(1, 'big'),
struct.pack(">Q", transaction_fee),
struct.pack(">Q", timestamp_param)
]
transaction_data = {
"senderPublicKey": self.public_key,
"name": name,
"quantity": quantity,
"timestamp": timestamp_param,
"description": description,
"decimals": decimals,
"reissuable": reissuable,
"fee": transaction_fee,
}
if version > 1:
sign_data.insert(1, version.to_bytes(1, 'big'))
sign_data.insert(2, self.chain_id.encode('latin-1'))
transaction_data.update({
"type": TRANSACTION_TYPE_ISSUE,
"senderPublicKey": self.public_key,
"version": version,
"chainId": self.chain_id
})
if script:
if version < 2:
raise ValueError("Smart assets require at least 2 transaction version")
compiled_script = base64.b64decode(script)
sign_data.extend([
b'\1', # smart asset
struct.pack(">H", len(compiled_script)),
compiled_script
])
transaction_data["script"] = 'base64:' + script
else:
if version >= 2:
sign_data.append(b'\0')
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
if version == 1:
transaction_data["signature"] = signature
else:
transaction_data["proofs"] = [signature]
return transaction_data
def _generate_transfer_transaction(self, recipient, asset_id, fee_asset_id, amount, attachment, transaction_fee,
timestamp):
"""
Prepare data for transfer transaction
:param recipient:
:param amount:
:param attachment:
:param transaction_fee:
:param timestamp:
:return:
"""
if isinstance(recipient, WavesAddress):
recipient_address = recipient.value
else:
recipient_address = recipient
if timestamp == 0:
timestamp_param = int(time.time() * 1000)
else:
timestamp_param = timestamp
if not attachment:
encoded_attachment = b''
else:
encoded_attachment = attachment.encode('latin-1')
if asset_id:
asset_sign_data = b'\1%s' % base58.b58decode(asset_id)
else:
asset_sign_data = b'\0'
if fee_asset_id:
fee_asset_sign_data = b'\1%s' % base58.b58decode(fee_asset_id)
else:
fee_asset_sign_data = b'\0'
sign_data = [
TRANSACTION_TYPE_TRANSFER.to_bytes(1, 'big'),
base58.b58decode(self.public_key),
asset_sign_data,
fee_asset_sign_data,
struct.pack(">Q", timestamp_param),
struct.pack(">Q", amount),
struct.pack(">Q", transaction_fee),
base58.b58decode(recipient_address),
struct.pack(">H", len(b'' or encoded_attachment)),
encoded_attachment
]
signature = sign_with_private_key(self.private_key, b''.join(sign_data))
transaction_data = {
"senderPublicKey": self.public_key,
"recipient": recipient_address,
"amount": amount,
"fee": transaction_fee,
"timestamp": timestamp_param,
"attachment": base58.b58encode(encoded_attachment).decode(),
"signature": signature,
}
if asset_id:
transaction_data["assetId"] = asset_id
if fee_asset_id:
transaction_data["feeAssetId"] = fee_asset_id
return transaction_data