def appendTransferOpToTx(builder, from_name, to_name, amount, symbol):
## TODO: Cleanup exception catching for better user feedback
try:
account = Account(from_name, blockchain_instance=blockchain)
amountAsset = Amount(amount, symbol, blockchain_instance=blockchain)
to = Account(to_name, blockchain_instance=blockchain)
except NumRetriesReached:
Logger.Write("ERROR: Can't reach API node: 'NumRetries' reached. Check network connection.")
raise
except:
Logger.Write("Problem locating source or destination account, or asset. Might not exist.")
raise
memoObj = Memo(from_account=account, to_account=to, blockchain_instance=blockchain)
memo_text = "" #"Signed by BitShares App on Ledger Nano S!"
op = operations.Transfer(
**{
"fee": {"amount": 0, "asset_id": "1.3.0"},
"from": account["id"],
"to": to["id"],
"amount": {"amount": int(amountAsset), "asset_id": amountAsset.asset["id"]},
"memo": memoObj.encrypt(memo_text),
}
)
builder.appendOps(op)
return builder
def append_transfer_tx(append_to, dest_account_name):
#
# `append_to` is a TransactionBuilder object. (E.g. from BitShares.new_tx())
# `dest_account_name` is a string account name.
#
account = Account(tip_sender, blockchain_instance=blockchain)
amount = Amount(tip_amount,
tip_asset_symbol,
blockchain_instance=blockchain)
try:
to = Account(dest_account_name, blockchain_instance=blockchain)
except NumRetriesReached:
Logger.Write(
"ERROR: Can't reach API node: 'NumRetries' reached. Check network connection."
)
raise
except:
Logger.Write("Problem locating destination account. Might not exist.")
raise
memoObj = Memo(from_account=account,
to_account=to,
blockchain_instance=blockchain)
memo_text = "" #"Signed by BitShares App on Ledger Nano S!"
op = operations.Transfer(
**{
"fee": {
"amount": 0,
"asset_id": "1.3.0"
},
"from": account["id"],
"to": to["id"],
"amount": {
"amount": int(amount),
"asset_id": amount.asset["id"]
},
"memo": memoObj.encrypt(memo_text),
})
append_to.appendOps(op)
return append_to
def getMemo(self, from_account, to_account, text=None, data=None):
if (data):
from_account = data["from"]
to_account = data["to"]
#data = data["message"]
#import traceback
#try:
# from_account = self.getAccount(from_account)
#except:
# traceback.print_exc()
# #print(from_account
# #print(from_account)
try:
to_account = self.getAccount(to_account)
to_account_name = to_account["name"]
except:
to_account_name = to_account
to_account = None
#invert = True
#to_account = self.getAccount(to_account)
try:
from_account = self.getAccount(from_account)
from_account_name = from_account["name"]
except:
from_account_name = from_account
from_account = None
#print("TO:", to_account)
#print("FROM:", from_account)
#if (self.isCachedAccount(to_account['name'])):
# invert = False
#else:
# if not(from_account):
# showerror(from_account_name)
# return False
from bitshares.memo import Memo
memoObj = Memo(
from_account=None, #from_account,
to_account=None, #to_account,
bitshares_instance=self.bts)
memoObj.chain_prefix = self.chain_prefix()
memoObj.from_account = from_account
memoObj.to_account = to_account
if text:
# { nonce, to from, message } json:
return memoObj.encrypt(text)
# plaintext:
return {
'message': memoObj.decrypt(data),
'from': from_account_name, #from_account['name']
'to': to_account_name, #to_account['name'],
}
def play_game(account, amountBet, userRoll):
memo = Memo('bts-dice-game', account)
nodeForConnections = 'wss://api.bitsharesdex.com'
blockchain = Blockchain(node=nodeForConnections, mode='head')
bitshares = BitShares(
node=nodeForConnections,
nobroadcast=False,
)
blockNum = blockchain.get_current_block_num()
userGuess = userRoll
seed(blockNum * (userGuess + 1))
diceRatios = btsDiceRatios
winRatio = diceRatios.get_ratio(userGuess)
value = randint(1, 100)
correctGuess = value < int(userGuess)
bitshares.wallet.unlock('superSecretPassword')
if winRatio is None:
print('You submitted something not correct to this contract.')
elif correctGuess:
winningAmount = winRatio * amountBet
winningString = "Correct! You guessed {0} and rolled {1}. You won {2:.5f} BTS.".format(
userRoll, value, winningAmount)
bitshares.transfer(account,
winningAmount,
'BTS',
winningString,
account='bts-dice-game')
print(winningString)
else:
losingString = "Incorrect. You guessed {0} and rolled {1}.".format(
userRoll, value)
bitshares.transfer(account,
0.00001,
'BTS',
losingString,
account='bts-dice-game')
print(
'You guessed incorrectly. Your guess was {a} and you rolled {b}.'.
format(a=userRoll, b=value))
def decode_memo(self, payload):
""" This method decodes the memo for us.
.. note:: Three cases exist that prevent us from decoding a memo
that lead to a special message being used instead:
* ``memo_key_missing``: In the case the decryption key was not provided
* ````: In the case no memo was provided
* ``decoding_not_possible``: In the case, the memo couldn't be decrypted
"""
try:
decoded_memo = Memo(
bitshares_instance=self.bitshares
).decrypt(payload["memo"])
except MissingKeyError:
decoded_memo = "memo_key_missing"
except KeyError:
decoded_memo = ""
except ValueError:
decoded_memo = "decoding_not_possible"
return decoded_memo
def pprintOperation(op, show_memo=False, ctx=None):
from bitshares.price import Order, FilledOrder
if isinstance(op, dict) and "op" in op:
id = op["op"][0]
op = op["op"][1]
else:
id = op[0]
op = op[1]
if id == 1:
return str(Order(op))
elif id == 4:
return str(FilledOrder(op))
elif id == 5:
return "New account created for {}".format(op["name"])
elif id == 2:
return "Canceled order %s" % op["order"]
elif id == 6:
return "Account {} updated".format(Account(op["account"])["name"])
elif id == 33:
return "Claiming from vesting: %s" % str(Amount(op["amount"]))
elif id == 15:
return "Reserve {}".format(str(Amount(op["amount_to_reserve"])))
elif id == 0:
from_account = Account(op["from"])
to_account = Account(op["to"])
amount = Amount(op["amount"])
memo = ""
if show_memo and ctx is not None:
try:
plain_memo = Memo(blockchain_instance=ctx.blockchain).decrypt(
op["memo"])
except Exception as e:
plain_memo = str(e)
memo = " (memo: {plain_memo})".format(**locals())
return "Transfer from {from_account[name]} to {to_account[name]}: {amount}{memo}".format(
**locals())
else:
return format_dict(op)
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
NODE_URL = os.getenv('BITSHARES_NODE_URL', 'wss://node.testnet.bitshares.eu')
GATEWAY_ACCOUNT_ID = os.getenv('GATEWAY_ACCOUNT', '1.2.3604')
GATEWAY_ACCOUNT_WIF = '5KiQYz2MBTWH676biQcVwx6zJ1J3cYb65bZThRBav1z7gU2MoMu'
START_BLOCK = os.getenv('START_BLOCK', cache.get('START_BLOCK'))
if START_BLOCK:
START_BLOCK = int(START_BLOCK)
bitshares = BitShares(node=NODE_URL, keys=[GATEWAY_ACCOUNT_WIF])
set_shared_blockchain_instance(bitshares)
m = Memo()
logger.info('Gateway running..')
logger.info(f'START_BLOCK: {START_BLOCK}')
logger.info(f'NODE_URL: {NODE_URL}')
logger.info(f'GATEWAY_ACCOUNT_ID: {GATEWAY_ACCOUNT_ID}')
logger.info(f'GATEWAY_ACCOUNT_WIF: {GATEWAY_ACCOUNT_WIF[:5]}..')
logger.info(f'EOS_NODE_URL: {eosio_config.url}')
logger.info(f'EOS_NODE_PORT: {eosio_config.port}')
logger.info(f'ISSUER_WIF: {ISSUER_WIF}')
logger.info(f'ISSUER_NAME: {ISSUER_NAME}')
logger.info(f'ISSUE_ASSET: {ISSUE_ASSET}')
def parse_transfer(op):
# TODO Разобраться где обрабатывать пресижн
def send(self, amount, address, memo=None, from_address=None) -> dict:
"""
Send tokens to a given address/account, optionally specifying a memo. The Bitshares network transaction fee
will be subtracted from the amount before sending.
There must be a valid :py:class:`models.CryptoKeyPair` in the database for both 'active' and 'memo' keys for the
from_address account, or an AuthorityMissing exception will be thrown.
Example - send 1.23 BUILDTEAM from @someguy123 to @privex with memo 'hello'
>>> s = BitsharesManager('BUILDTEAM')
>>> s.send(from_address='someguy123', address='privex', amount=Decimal('1.23'), memo='hello')
:param Decimal amount: Amount of tokens to send, as a Decimal()
:param address: Account to send the tokens to
:param from_address: Account to send the tokens from
:param memo: Memo to send tokens with
:raises AttributeError: When both `from_address` and `self.coin.our_account` are blank.
:raises ArithmeticError: When the amount is lower than the lowest amount allowed by the token's precision
(after subtracting the network transaction fee)
:raises AuthorityMissing: Cannot send because we don't have authority to (missing key etc.)
:raises AccountNotFound: The requested account/address doesn't exist
:raises TokenNotFound: When the requested token `symbol` does not exist
:raises NotEnoughBalance: The account `from_address` does not have enough balance to send this amount.
:return dict: Result Information
Format::
{
txid:str - Transaction ID - None if not known,
coin:str - Symbol that was sent,
amount:Decimal - The amount that was sent (after fees),
fee:Decimal - TX Fee that was taken from the amount,
from:str - The account/address the coins were sent from,
send_type:str - Should be statically set to "send"
}
"""
# Try from_address first. If that's empty, try using self.coin.our_account. If both are empty, abort.
if empty(from_address):
if empty(self.coin.our_account):
raise AttributeError(
"Both 'from_address' and 'coin.our_account' are empty. Cannot send."
)
from_address = self.coin.our_account
# make sure we have the necessary private keys loaded (memo key for encrypting memo, active key for sending coins)
self.set_wallet_keys(from_address, ['memo', 'active'])
asset_obj = self.get_asset_obj(self.symbol)
if asset_obj is None:
raise exceptions.TokenNotFound(
f'Failed to send because {self.symbol} is an invalid token symbol.'
)
# trim input amount to the token's precision just to be safe
str_amount = ('{0:.' + str(asset_obj['precision']) +
'f}').format(amount)
amount = Decimal(str_amount)
if not self.is_amount_above_minimum(amount, asset_obj['precision']):
raise ArithmeticError(
f'Failed to send because {amount} is less than the minimum amount allowed for {self.symbol} tokens.'
)
from_account = self.get_account_obj(from_address)
if from_account is None:
raise exceptions.AccountNotFound(
f'Failed to send because source account {from_address} could not be found.'
)
to_account = self.get_account_obj(address)
if to_account is None:
raise exceptions.AccountNotFound(
f'Failed to send because destination account {address} could not be found.'
)
# verify from_account balance is sufficient for the transaction
from_account_balance = self.get_decimal_from_amount(
from_account.balance(self.symbol))
if from_account_balance < amount:
raise exceptions.NotEnoughBalance(
f'Failed to send because source account {from_address} balance {from_account_balance} {self.symbol} is less than amount to send ({amount} {self.symbol}).'
)
amount_obj = Amount(str_amount,
self.symbol,
blockchain_instance=self.bitshares)
try:
if memo is None:
memo = ''
memo_obj = Memo(from_account=from_account,
to_account=to_account,
blockchain_instance=self.bitshares)
encrypted_memo = memo_obj.encrypt(memo)
# build preliminary transaction object, without network transaction fee
op = operations.Transfer(
**{
'fee': {
'amount': 0,
'asset_id': amount_obj.asset['id']
},
'from': from_account['id'],
'to': to_account['id'],
'amount': {
'amount': int(amount_obj),
'asset_id': amount_obj.asset['id']
},
'memo': encrypted_memo,
'prefix': self.bitshares.prefix,
})
# calculate how much the transaction fee is - rather clunky method here but it works
ops = [self.bitshares.txbuffer.operation_class(op)]
ops_with_fees = self.bitshares.txbuffer.add_required_fees(
ops, asset_id=amount_obj.asset['id'])
raw_fee_amount = Decimal(
str(ops_with_fees[0][1].data['fee']['amount']))
fee_amount_str = '{0:f}'.format(
raw_fee_amount / (10**amount_obj.asset['precision']))
fee_amount = Amount(fee_amount_str,
self.symbol,
blockchain_instance=self.bitshares)
amount_obj = amount_obj - fee_amount
# verify the amount still makes sense after subtracting the transaction fee
if int(amount_obj) < 1:
raise ArithmeticError(
f'Failed to send because {amount} is less than the network transaction fee of {fee_amount_str} {self.symbol} tokens.'
)
# correct the transaction object to take into account the transaction fee
adj_op = operations.Transfer(
**{
'fee': {
'amount': int(fee_amount),
'asset_id': amount_obj.asset['id']
},
'from': from_account['id'],
'to': to_account['id'],
'amount': {
'amount': int(amount_obj),
'asset_id': amount_obj.asset['id']
},
'memo': encrypted_memo,
'prefix': self.bitshares.prefix,
})
log.debug(
'doing Bitshares transaction - from_address[%s], address[%s], amount[%s %s], fee_amount[%s], amount_obj[%s], memo[%s]',
from_address, address, str_amount, self.symbol, fee_amount,
amount_obj, memo)
# and finally, do the op!
self.bitshares.finalizeOp(adj_op,
from_address,
"active",
fee_asset=amount_obj.asset['id'])
result = self.bitshares.broadcast()
except KeyNotFound as e:
raise exceptions.AuthorityMissing(str(e))
return {
'txid':
None, # transaction ID is not readily available from the Bitshares API
'coin': self.orig_symbol,
'amount': self.get_decimal_from_amount(amount_obj),
'fee': self.get_decimal_from_amount(fee_amount),
'from': from_address,
'send_type': 'send'
}
from bitshares.memo import Memo
from bitshares.instance import set_shared_blockchain_instance
from raven.contrib.django.raven_compat.models import client
# TODO Сентри
# FIXME
# GATEWAY_ACCOUNT = os.getenv('GATEWAY_ACCOUNT')
NODE_URL = os.getenv('BITSHARES_NODE_URL', 'wss://node.testnet.bitshares.eu')
GATEWAY_ACCOUNT_ID = os.getenv('GATEWAY_ACCOUNT', '1.2.3604')
GATEWAY_ACCOUNT_WIF = '5KiQYz2MBTWH676biQcVwx6zJ1J3cYb65bZThRBav1z7gU2MoMu'
bitshares = BitShares(node=NODE_URL, keys=[GATEWAY_ACCOUNT_WIF])
set_shared_blockchain_instance(bitshares)
m = Memo()
logging.basicConfig(
level=logging.WARN,
format="%(asctime)s [%(threadName)s] [%(levelname)s] %(message)s",
handlers=[
# logging.FileHandler("{0}/{1}.log".format(logPath, fileName)),
logging.StreamHandler()
])
logger.info(f'Gateway running..')
logger.info(f'NODE_URL: {NODE_URL}')
logger.info(f'GATEWAY_ACCOUNT_ID: {GATEWAY_ACCOUNT_ID}')
logger.info(f'GATEWAY_ACCOUNT_WIF: {GATEWAY_ACCOUNT_WIF[:5]}..')
logger.info(f'EOS_NODE_URL: {eosio_config.url}')
logger.info(f'EOS_NODE_PORT: {eosio_config.port}')
def issue(self, amount: Decimal, address: str, memo: str = None, trigger_data=None) -> dict:
"""
Issue (create/print) tokens to a given address/account, optionally specifying a memo if desired.
The network transaction fee for issuance will be paid by the issuing account in BTS.
Example - Issue 5.10 SGTK to @privex
>>> s = BitsharesManager('SGTK')
>>> s.issue(address='privex', amount=Decimal('5.10'))
:param Decimal amount: Amount of tokens to issue, as a Decimal
:param address: Account to issue the tokens to (which is also the issuer account)
:param memo: Optional memo for the issuance transaction
:raises IssuerKeyError: Cannot issue because we don't have authority to (missing key etc.)
:raises TokenNotFound: When the requested token `symbol` does not exist
:raises AccountNotFound: The requested account doesn't exist
:raises ArithmeticError: When the amount is lower than the lowest amount allowed by the token's precision
:return dict: Result Information
Format::
{
txid:str - Transaction ID - None if not known,
coin:str - Symbol that was sent,
amount:Decimal - The amount that was issued,
fee:Decimal - TX Fee that was taken from the amount (will be 0 if fee is in BTS rather than the issuing token),
from:str - The account/address the coins were issued from,
send_type:str - Should be statically set to "issue"
}
"""
asset_obj = self.get_asset_obj(self.symbol)
if asset_obj is None:
raise exceptions.TokenNotFound(f'Failed to issue because {self.symbol} is an invalid token symbol.')
# trim input amount to the token's precision just to be safe
str_amount = ('{0:.' + str(asset_obj['precision']) + 'f}').format(amount)
amount = Decimal(str_amount)
if not self.is_amount_above_minimum(amount, asset_obj['precision']):
raise ArithmeticError(f'Failed to issue because {amount} is less than the minimum amount allowed for {self.symbol} tokens.')
to_account = self.get_account_obj(address)
if to_account is None:
raise exceptions.AccountNotFound(f'Failed to issue because issuing account {address} could not be found.')
amount_obj = Amount(str_amount, self.symbol, blockchain_instance=self.bitshares)
try:
# make sure we have the necessary private keys loaded (memo key for encrypting memo, active key for issuing coins)
self.set_wallet_keys(address, [ 'memo', 'active' ])
if memo is None:
memo = ''
memo_obj = Memo(from_account=to_account, to_account=to_account, blockchain_instance=self.bitshares)
encrypted_memo = memo_obj.encrypt(memo)
# construct the transaction - note that transaction fee for issuance will be paid in BTS, but we retain the
# flexibility to add support for paying the fee in the issuing token if deemed necessary
op = operations.Asset_issue(
**{
"fee": {"amount": 0, "asset_id": "1.3.0"},
"issuer": to_account["id"],
"asset_to_issue": {"amount": int(amount_obj), "asset_id": amount_obj.asset["id"]},
"memo": encrypted_memo,
"issue_to_account": to_account["id"],
"extensions": [],
"prefix": self.bitshares.prefix,
}
)
log.debug('doing token issuance - address[%s], amount[%s %s], memo[%s]', address, str_amount, self.symbol, memo)
# broadcast the transaction
self.bitshares.finalizeOp(op, to_account, "active")
result = self.bitshares.broadcast()
except KeyNotFound as e:
raise exceptions.IssuerKeyError(str(e))
except exceptions.AuthorityMissing as e:
raise exceptions.IssuerKeyError(str(e))
return {
'txid': None, # transaction ID is not readily available from the Bitshares API
'coin': self.orig_symbol,
'amount': self.get_decimal_from_amount(amount_obj),
'fee': Decimal(0), # fee is in BTS, not the issuing token
'from': address,
'send_type': 'issue'
}
from bitshares.blockchain import Blockchain
from bitshares.account import Account
from bitshares.asset import Asset
from bitshares.memo import Memo
import btsDiceGameTransactions
nodeForConnections = 'wss://api.bitsharesdex.com'
blockchain = Blockchain(node=nodeForConnections, mode='head')
btsDGT = btsDiceGameTransactions
memo = Memo()
memo.blockchain.wallet.unlock('superSecretPassword')
for op in blockchain.stream(['transfer']):
payee = Account(op['to']).name
if payee == 'bts-dice-game':
payor = Account(op['from']).name
decryptedMemo = int(memo.decrypt(op['memo']))
amount = op['amount']['amount'] / 100000
btsDGT.play_game(payor, amount, decryptedMemo)
def cast_money(s, _):
if s is None: return None
return Decimal(s[1:].replace(
",", "")) # hive off the dollar sign and filter out commas
money_type = psycopg2.extensions.new_type((790, ), "MONEY", cast_money)
config = ConfigParser()
config.read(
['/etc/gateway.conf',
os.path.expanduser('~/.config/gateway.conf')])
bitshares = BitShares()
bitshares.wallet.unlock(config['gateway']['passphrase'])
memoObj = Memo()
memoObj.unlock_wallet(config['gateway']['passphrase'])
acct = Account(config['gateway']['account'])
conn = psycopg2.connect(host=config['db'].get('host', ''),
database=config['db']['name'],
user=config['db']["user"],
cursor_factory=psycopg2.extras.NamedTupleCursor)
psycopg2.extensions.register_type(money_type, conn)
InputTx = collections.namedtuple("InputTx",
"bts_account amount date comment fiat_txid")
registry = {}
owner_key = "5JrC9FxgxtJ8fi8UjPgL57KH27ToVngEZ7Aka6uSSNBFb2XTVgB"
memo_key = "5KUVfh5zagFRheVT8G4PQXjknw25nuEXizsh3k3JhY3J5cEkq1H"
active_key = "5JyorRk13HM1WDJ4VvPE7WimPa4KB21qhLQMTcuZkNxBdafdQnV"
bitshares = BitShares(node=["wss://openledger.hk/ws", "wss://us.nodes.bitshares.ws", "wss://bitshares.openledger.info/ws"])
try:
bitshares.wallet.create(pass_phrase)
bitshares.wallet.addPrivateKey(owner_key)
bitshares.wallet.addPrivateKey(active_key)
bitshares.wallet.addPrivateKey(memo_key)
except:
bitshares.wallet.unlock(pass_phrase)
acc = bitshares.wallet.getAccounts()[0]['account']
m = Memo(blockchain=bitshares)
m.blockchain.wallet.unlock(pass_phrase)
def verify_transaction(acc, m, to_send_text, to_send_amount, payment_id, loop_time):
starting_time = time.time()
while True:
started_time = time.time() - starting_time
if started_time > loop_time:
break
ad_object = advertisement.objects.get(id=payment_id)
for transaction in acc.history():
currInfo = transaction['op'][1]
def build_transaction(incidentId, fromAddress, fromMemoWif, toAddress, asset_id,
amount, includeFee, bitshares_instance=None):
""" Builds a transaction (without signature)
:param guid incidentId: Lykke unique operation ID
:param str fromAddress: Source address
:param str toAddress: Destination address
:param str assetId: Asset ID to transfer
:param str amount: Amount to transfer. Integer as string, aligned to the asset
accuracy. Actual value can be calculated as x = amount / (10 ^
asset.Accuracy)
:param bool includeFee: Flag, which indicates, that the fee should
be included in the specified amount
"""
def obtain_raw_tx():
# if old_operation is None:
_memo = memo.encrypt(memo_plain)
_expiration = Config.get("bitshares", "transaction_expiration_in_sec", 60 * 60 * 24) # 24 hours
# else:
# memo_encrypted = memo.encrypt(memo_plain)
op = operations.Transfer(**{
"fee": {
"amount": 0,
"asset_id": "1.3.0"
}, # will be replaced
"from": from_account["id"],
"to": to_account["id"],
"amount": amount.json(),
"memo": _memo,
"prefix": bitshares_instance.prefix
})
tx = TransactionBuilder(
bitshares_instance=bitshares_instance
)
tx.appendOps(op)
tx.set_expiration(_expiration)
# Build the transaction, obtain fee to be paid
tx.constructTx()
return tx.json()
operation_formatter.validate_incident_id(incidentId)
if not is_valid_address(fromAddress):
raise AccountDoesNotExistsException()
if not is_valid_address(toAddress):
raise AccountDoesNotExistsException()
# # check if this was already built
# old_operation = None
# try:
# old_operation = _get_os().get_operation(incidentId)
# except OperationNotFoundException:
# pass
# Decode addresses
from_address = split_unique_address(fromAddress)
to_address = split_unique_address(toAddress)
# obtain chain accounts from addresses
from_account = Account(
from_address["account_id"],
bitshares_instance=bitshares_instance)
to_account = Account(
to_address["account_id"],
bitshares_instance=bitshares_instance)
memo_plain = create_memo(from_address, to_address, incidentId)
try:
# Construct amount
amount = Amount(
{
"amount": amount,
"asset_id": asset_id
},
bitshares_instance=bitshares_instance
)
except AssetDoesNotExistsException:
raise AssetNotFoundException()
# encrypt memo
# TODO this is a hack. python-bitshares issue is opened, once resolve, fix
if not fromMemoWif:
if from_address["account_id"] == Config.get("bitshares", "exchange_account_id"):
fromMemoWif = Config.get("bitshares", "exchange_account_memo_key")
if fromMemoWif:
bitshares_instance.wallet.setKeys(fromMemoWif)
# memo key of the account must be known!
if not from_account["options"]["memo_key"] in Wallet.keys:
raise MemoMatchingFailedException()
memo = Memo(
from_account=from_account,
to_account=to_account,
bitshares_instance=bitshares_instance
)
try:
tx = obtain_raw_tx()
except MissingKeyError:
raise MemoMatchingFailedException()
fee = Amount(tx["operations"][0][1]["fee"],
bitshares_instance=bitshares_instance)
# virtual internal transfers always do full amount
if includeFee and from_account != to_account:
# Reduce fee from amount to transfer
amount -= fee
tx = obtain_raw_tx()
# Add additional/optional information
# - add incident_id as fallback for internal database
# - add decoded memo to avoid double decoding
tx.update({
"incident_id": incidentId,
"decoded_memo": memo_plain,
})
if bitshares_instance.prefix != "BTS":
tx["prefix"] = bitshares_instance.prefix
return {"transactionContext": json.dumps(tx)}