def post(self, configuration_file_name):
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
account = configuration_file.account
try_unlock(account)
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
ex_currency_amt = json_decode(self.request.body)
exchange = Exchange.get_by_name(ex_currency_amt["exchange"])(w3=w3)
currency = Erc20Token.find_by_ticker(ex_currency_amt["currency"],
configuration_file.network)
token_amount = TokenAmount(ex_currency_amt["target_amount"], currency)
try:
exchange_costs = exchange.calculate_transaction_costs(
token_amount, account)
total_cost = exchange_costs["total"]
self.render_json({
"exchange": exchange.name,
"currency": currency.ticker,
"target_amount": ex_currency_amt["target_amount"],
"as_wei": total_cost.as_wei,
"formatted": total_cost.formatted,
"utc_seconds": int(time.time()),
})
except ExchangeError as ex:
log.error("There was an error preparing the exchange", exc_info=ex)
self.set_status(
status_code=409,
reason=str(ex),
)
def run_action_swap_kyber():
account = prompt_account_selection()
ethereum_rpc_endpoint = prompt_ethereum_rpc_endpoint_selection()
w3 = make_web3_provider(ethereum_rpc_endpoint.url, account)
kyber = Exchange.get_by_name("kyber")(w3=w3)
amount = Wei(5 * (10**18))
kyber.buy_tokens(account,
TokenAmount(amount, Erc20Token.find_by_ticker("RDN")))
return main_prompt()
def get(self, exchange_name, configuration_file_name, token_ticker):
exchange_class = Exchange.get_by_name(exchange_name)
configuration_file = RaidenConfigurationFile.get_by_filename(configuration_file_name)
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, configuration_file.account
)
self.render(
"swap.html",
exchange=exchange_class(w3=w3),
configuration_file=configuration_file,
balance=configuration_file.account.get_ethereum_balance(w3),
token=Erc20Token.find_by_ticker(token_ticker),
)
def post(self, configuration_file_name):
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
account = configuration_file.account
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
ex_currency_amt = json_decode(self.request.body)
exchange = Exchange.get_by_name(ex_currency_amt["exchange"])(w3=w3)
currency = Erc20Token.find_by_ticker(ex_currency_amt["currency"],
configuration_file.network)
token_amount = TokenAmount(ex_currency_amt["target_amount"], currency)
exchange_costs = exchange.calculate_transaction_costs(
token_amount, account)
total_cost = exchange_costs["total"]
self.render_json({
"exchange": exchange.name,
"currency": currency.ticker,
"target_amount": ex_currency_amt["target_amount"],
"as_wei": total_cost.as_wei,
"formatted": total_cost.formatted,
"utc_seconds": int(time.time()),
})
def _run_swap(self, **kw):
try:
configuration_file_name = kw.get("configuration_file_name")
exchange_name = kw["exchange"]
token_amount = kw["amount"]
token_ticker = kw["token"]
except (ValueError, KeyError, TypeError) as exc:
self._send_error_message(f"Invalid request: {exc}")
return
try:
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
network_name = configuration_file.network.name
form = TokenExchangeForm({
"network": [network_name],
"exchange": [exchange_name],
"token_amount": [token_amount],
"token_ticker": [token_ticker],
})
if form.validate():
account = configuration_file.account
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
token = Erc20Token.find_by_ticker(form.data["token_ticker"],
network_name)
token_amount = TokenAmount(Wei(form.data["token_amount"]),
token)
exchange = Exchange.get_by_name(form.data["exchange"])(w3=w3)
self._send_status_update(f"Starting swap at {exchange.name}")
costs = exchange.calculate_transaction_costs(
token_amount, account)
needed_funds = costs["total"]
exchange_rate = costs["exchange_rate"]
balance_before_swap = account.get_ethereum_balance(w3)
if needed_funds > balance_before_swap:
raise ValueError((
f"Not enough ETH. {balance_before_swap.formatted} available, but "
f"{needed_funds.formatted} needed"))
self._send_status_update(
(f"Best exchange rate found at {exchange.name}: "
f"{exchange_rate} / {token_amount.ticker}"))
self._send_status_update(
f"Trying to acquire {token_amount} at this rate")
self._send_status_update(
f"maximal costs estimated: {needed_funds} ")
transaction_receipt = exchange.buy_tokens(
account, token_amount, costs)
block_with_transaction = transaction_receipt["blockNumber"]
current_block = w3.eth.blockNumber
while current_block < block_with_transaction:
log.debug("wait for block with transaction to be fetched")
current_block = w3.eth.blockNumber
time.sleep(1)
token_balance = get_token_balance(w3, account, token)
balance_after_swap = account.get_ethereum_balance(w3)
actual_total_costs = balance_before_swap - balance_after_swap
self._send_status_update(
f"Swap complete. {token_balance.formatted} available")
self._send_status_update(f"Actual costs: {actual_total_costs}")
required = RequiredAmounts.for_network(network_name)
service_token = Erc20Token.find_by_ticker(
required.service_token.ticker, network_name)
service_token_balance = get_token_balance(
w3, account, service_token)
transfer_token = Erc20Token.find_by_ticker(
required.transfer_token.ticker, network_name)
transfer_token_balance = get_token_balance(
w3, account, transfer_token)
time.sleep(2)
if service_token_balance < required.service_token:
self._send_redirect(
self.reverse_url("swap", configuration_file.file_name,
service_token.ticker))
elif transfer_token_balance < required.transfer_token:
self._send_redirect(
self.reverse_url("swap", configuration_file.file_name,
transfer_token.ticker))
else:
self._send_redirect(
self.reverse_url("launch",
configuration_file.file_name))
else:
for key, error_list in form.errors.items():
error_message = f"{key}: {'/'.join(error_list)}"
self._send_error_message(error_message)
except (json.decoder.JSONDecodeError, KeyError, ExchangeError,
ValueError) as exc:
self._send_error_message(str(exc))
def _run_swap(self, **kw):
try:
configuration_file_name = kw.get("configuration_file_name")
exchange_name = kw["exchange"]
token_amount = kw["amount"]
token_ticker = kw["token"]
except (ValueError, KeyError, TypeError) as exc:
self._send_error_message(f"Invalid request: {exc}")
return
try:
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
network_name = configuration_file.network.name
form = TokenExchangeForm({
"network": [network_name],
"exchange": [exchange_name],
"token_amount": [token_amount],
"token_ticker": [token_ticker],
})
if form.validate():
account = configuration_file.account
try_unlock(account)
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
token = Erc20Token.find_by_ticker(form.data["token_ticker"],
network_name)
token_amount = TokenAmount(Wei(form.data["token_amount"]),
token)
exchange = Exchange.get_by_name(form.data["exchange"])(w3=w3)
self._send_status_update(f"Starting swap at {exchange.name}")
costs = exchange.calculate_transaction_costs(
token_amount, account)
needed_funds = costs["total"]
exchange_rate = costs["exchange_rate"]
balance_before_swap = account.get_ethereum_balance(w3)
if needed_funds > balance_before_swap:
raise ValueError((
f"Not enough ETH. {balance_before_swap.formatted} available, but "
f"{needed_funds.formatted} needed"))
self._send_status_update(
(f"Best exchange rate found at {exchange.name}: "
f"{exchange_rate} / {token_amount.ticker}"))
self._send_status_update(
f"Trying to acquire {token_amount} at this rate")
transaction_receipt = exchange.buy_tokens(
account, token_amount, costs)
wait_for_transaction(w3, transaction_receipt)
token_balance = get_token_balance(w3, account, token)
balance_after_swap = account.get_ethereum_balance(w3)
actual_total_costs = balance_before_swap - balance_after_swap
self._send_status_update(
f"Swap complete. {token_balance.formatted} available")
self._send_status_update(f"Actual costs: {actual_total_costs}")
required = RequiredAmounts.for_network(network_name)
service_token = Erc20Token.find_by_ticker(
required.service_token.ticker, network_name)
service_token_balance = get_token_balance(
w3, account, service_token)
total_service_token_balance = get_total_token_owned(
w3, account, service_token)
transfer_token = Erc20Token.find_by_ticker(
required.transfer_token.ticker, network_name)
transfer_token_balance = get_token_balance(
w3, account, transfer_token)
if total_service_token_balance < required.service_token:
raise ExchangeError("Exchange was not successful")
elif service_token_balance.as_wei > 0:
self._send_status_update(
f"Making deposit of {service_token_balance.formatted} to the User Deposit Contract"
)
self._send_status_update(f"This might take a few minutes")
transaction_receipt = deposit_service_tokens(
w3=w3,
account=account,
token=service_token,
amount=service_token_balance.as_wei,
)
wait_for_transaction(w3, transaction_receipt)
service_token_deposited = get_token_deposit(
w3=w3, account=account, token=service_token)
self._send_status_update(
f"Total amount deposited at UDC: {service_token_deposited.formatted}"
)
if transfer_token_balance < required.transfer_token:
redirect_url = self.reverse_url(
"swap", configuration_file.file_name,
transfer_token.ticker)
next_page = "Moving on to exchanging DAI ..."
else:
redirect_url = self.reverse_url(
"launch", configuration_file.file_name)
next_page = "You are ready to launch Raiden! ..."
self._send_summary(
["Congratulations! Swap Successful!", next_page],
icon=token_ticker)
time.sleep(5)
self._send_redirect(redirect_url)
else:
for key, error_list in form.errors.items():
error_message = f"{key}: {'/'.join(error_list)}"
self._send_error_message(error_message)
except (json.decoder.JSONDecodeError, KeyError, ExchangeError,
ValueError) as exc:
self._send_error_message(str(exc))
redirect_url = self.reverse_url("swap",
configuration_file.file_name,
token_ticker)
next_page = f"Try again to exchange {token_ticker}..."
self._send_summary(["Transaction failed",
str(exc), next_page],
icon="error")
time.sleep(5)
self._send_redirect(redirect_url)
def _run_swap(self, **kw):
try:
configuration_file_name = kw.get("configuration_file_name")
exchange_name = kw["exchange"]
token_amount = kw["amount"]
token_ticker = kw["token"]
except (ValueError, KeyError, TypeError) as exc:
self._send_error_message(f"Invalid request: {exc}")
return
try:
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
form = TokenExchangeForm({
"network": [configuration_file.network.name],
"exchange": [exchange_name],
"token_amount": [token_amount],
"token_ticker": [token_ticker],
})
if form.validate():
account = configuration_file.account
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
token = Erc20Token.find_by_ticker(form.data["token_ticker"])
token_amount = TokenAmount(Wei(form.data["token_amount"]),
token)
exchange = Exchange.get_by_name(form.data["exchange"])(w3=w3)
self._send_status_update(f"Starting swap at {exchange.name}")
costs = exchange.calculate_transaction_costs(
token_amount, account)
needed_funds = costs["total"]
exchange_rate = costs["exchange_rate"]
current_balance = account.get_ethereum_balance(w3)
if needed_funds > current_balance:
raise ValueError((
f"Not enough ETH. {current_balance.formatted} available, but "
f"{needed_funds.formatted} needed"))
self._send_status_update(
(f"Best exchange rate found at {exchange.name}: "
f"{exchange_rate.formatted} / {token_amount.ticker}"))
self._send_status_update(
f"Trying to acquire up to {token_amount.formatted} at this rate"
)
self._send_status_update(
f"Estimated costs: {needed_funds.formatted}")
exchange.buy_tokens(account, token_amount)
token_balance = get_token_balance(w3, account, token)
self._send_status_update(
f"Swap complete. {token_balance.formatted} available")
self._send_redirect(
self.reverse_url("launch", configuration_file.file_name))
else:
for key, error_list in form.errors.items():
error_message = f"{key}: {'/'.join(error_list)}"
self._send_error_message(error_message)
except (json.decoder.JSONDecodeError, KeyError, ExchangeError,
ValueError) as exc:
self._send_error_message(str(exc))
def _run_swap(self, **kw):
try:
configuration_file_name = kw.get("configuration_file_name")
exchange_name = kw["exchange"]
token_amount = kw["amount"]
token_ticker = kw["token"]
except (ValueError, KeyError, TypeError) as exc:
self._send_error_message(f"Invalid request: {exc}")
return
try:
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
network_name = configuration_file.network.name
form = TokenExchangeForm({
"network": [network_name],
"exchange": [exchange_name],
"token_amount": [token_amount],
"token_ticker": [token_ticker],
})
if form.validate():
account = configuration_file.account
try_unlock(account)
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
token = Erc20Token.find_by_ticker(form.data["token_ticker"],
network_name)
token_amount = TokenAmount(Wei(form.data["token_amount"]),
token)
exchange = Exchange.get_by_name(form.data["exchange"])(w3=w3)
self._send_status_update(f"Starting swap at {exchange.name}")
costs = exchange.calculate_transaction_costs(
token_amount, account)
needed_funds = costs["total"]
exchange_rate = costs["exchange_rate"]
balance_before_swap = account.get_ethereum_balance(w3)
if needed_funds > balance_before_swap:
raise ValueError((
f"Not enough ETH. {balance_before_swap.formatted} available, but "
f"{needed_funds.formatted} needed"))
self._send_status_update(
(f"Best exchange rate found at {exchange.name}: "
f"{exchange_rate} / {token_amount.ticker}"))
self._send_status_update(
f"Trying to acquire {token_amount} at this rate")
tx_hash = exchange.buy_tokens(account, token_amount, costs)
wait_for_transaction(w3, tx_hash)
token_balance = get_token_balance(w3, account, token)
balance_after_swap = account.get_ethereum_balance(w3)
actual_total_costs = balance_before_swap - balance_after_swap
self._send_status_update(
f"Swap complete. {token_balance.formatted} available")
self._send_status_update(f"Actual costs: {actual_total_costs}")
required = RequiredAmounts.from_settings(
self.installer_settings)
service_token = Erc20Token.find_by_ticker(
required.service_token.ticker, network_name)
service_token_balance = get_token_balance(
w3, account, service_token)
total_service_token_balance = get_total_token_owned(
w3, account, service_token)
transfer_token = Erc20Token.find_by_ticker(
required.transfer_token.ticker, network_name)
transfer_token_balance = get_token_balance(
w3, account, transfer_token)
if total_service_token_balance < required.service_token:
raise ExchangeError("Exchange was not successful")
elif token_ticker == service_token.ticker and service_token_balance > required.service_token:
self._deposit_to_udc(w3, account, service_token,
service_token_balance)
self._redirect_transfer_swap(configuration_file,
transfer_token_balance, required)
else:
for key, error_list in form.errors.items():
error_message = f"{key}: {'/'.join(error_list)}"
self._send_error_message(error_message)
except (json.decoder.JSONDecodeError, KeyError, ExchangeError,
ValueError) as exc:
self._redirect_after_swap_error(exc, configuration_file.file_name,
token_ticker)