def test_buy_tokens(test_account, patch_kyber_support, kyber):
knc_balance_before = get_token_balance(kyber.w3, test_account, KNC_TOKEN)
buy_amount = TokenAmount(10, KNC_TOKEN)
tx_hash = kyber.buy_tokens(test_account, buy_amount)
kyber.w3.eth.waitForTransactionReceipt(tx_hash)
knc_balance_after = get_token_balance(kyber.w3, test_account, KNC_TOKEN)
assert knc_balance_after == knc_balance_before + buy_amount
def test_buy_tokens(funded_account, provide_liquidity, uniswap):
w3 = uniswap.w3
wiz_balance_before = get_token_balance(w3, funded_account, WIZ_TOKEN)
buy_amount = TokenAmount(1, WIZ_TOKEN)
tx_hash = uniswap.buy_tokens(funded_account, buy_amount)
wait_for_transaction(w3, tx_hash)
wiz_balance_after = get_token_balance(w3, funded_account, WIZ_TOKEN)
assert wiz_balance_after == wiz_balance_before + buy_amount
def _run_udc_deposit(self, **kw):
try:
configuration_file_name = kw.get("configuration_file_name")
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
except (ValueError, KeyError, TypeError) as exc:
self._send_error_message(f"Invalid request: {exc}")
return
try:
settings = self.installer_settings
required = RequiredAmounts.from_settings(settings)
swap_amounts = SwapAmounts.from_settings(settings)
service_token = Erc20Token.find_by_ticker(
required.service_token.ticker, settings.network)
account = configuration_file.account
try_unlock(account)
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
service_token_balance = get_token_balance(w3, account,
service_token)
service_token_deposited = get_token_deposit(
w3, account, service_token)
if service_token_deposited < required.service_token:
swap_amount = swap_amounts.service_token
if service_token_balance >= swap_amount:
deposit = swap_amount - service_token_deposited
else:
deposit = service_token_balance
self._deposit_to_udc(w3, account, service_token, deposit)
else:
self._send_status_update(
f"Service token deposited at UDC: {service_token_deposited.formatted} is enough"
)
time.sleep(5)
transfer_token = Erc20Token.find_by_ticker(
required.transfer_token.ticker, settings.network)
transfer_token_balance = get_token_balance(w3, account,
transfer_token)
self._redirect_transfer_swap(configuration_file,
transfer_token_balance, required)
except (json.decoder.JSONDecodeError, KeyError, ExchangeError,
ValueError) as exc:
self._redirect_after_swap_error(exc, configuration_file.file_name,
service_token.ticker)
def removeLiquidity(w3, account, router_proxy):
pair_address = to_canonical_address(get_pair_address(w3, router_proxy))
liquidity_token = Erc20Token(
ticker="UNI-V2",
wei_ticker="UNI-V2 WEI",
address=pair_address
)
amount = get_token_balance(w3, account, liquidity_token)
approve(w3, account, router_proxy.address, amount.as_wei, liquidity_token)
min_eth = 1
min_tokens = 1
deadline = generateDeadline(w3)
transaction_params = {
"from": account.address,
"gas_price": w3.eth.generateGasPrice(),
"gas": GAS_LIMIT,
}
tx_hash = send_raw_transaction(
w3,
account,
router_proxy.functions.removeLiquidityETH,
WIZ_TOKEN.address,
amount.as_wei,
min_tokens,
min_eth,
account.address,
deadline,
**transaction_params,
)
wait_for_transaction(w3, tx_hash)
def test_can_mint_tokens(self):
self.network.fund(self.account)
self.account.wait_for_ethereum_funds(self.w3, EthereumAmount(0.01))
tx_hash = mint_tokens(self.w3, self.account, self.svt_token)
wait_for_transaction(self.w3, tx_hash)
balance = get_token_balance(self.w3, self.account, self.svt_token)
self.assertTrue(balance.as_wei >= self.svt_token.supply)
def addLiquidity(w3, account, router_proxy, current_rate):
max_tokens = get_token_balance(w3, account, WIZ_TOKEN)
approve(w3, account, router_proxy.address, max_tokens.as_wei, WIZ_TOKEN)
deadline = generateDeadline(w3)
eth_amount = EthereumAmount(0.001)
token_amount_desired = TokenAmount(eth_amount.value / current_rate.value, WIZ_TOKEN)
transaction_params = {
"from": account.address,
"value": eth_amount.as_wei,
"gas_price": w3.eth.generateGasPrice(),
"gas": GAS_LIMIT,
}
tx_hash = send_raw_transaction(
w3,
account,
router_proxy.functions.addLiquidityETH,
WIZ_TOKEN.address,
token_amount_desired.as_wei,
int(token_amount_desired.as_wei * 0.8),
int(eth_amount.as_wei * 0.8),
account.address,
deadline,
**transaction_params,
)
wait_for_transaction(w3, tx_hash)
def _run_launch(self, **kw):
configuration_file_name = kw.get("configuration_file_name")
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
network_name = configuration_file.network.name
raiden_client = RaidenClient.get_client(network_name)
required = RequiredAmounts.for_network(network_name)
if not raiden_client.is_installed:
self._send_status_update(
f"Downloading and installing raiden {raiden_client.release}")
raiden_client.install()
self._send_status_update("Installation complete")
account = configuration_file.account
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
service_token = Erc20Token.find_by_ticker(
required.service_token.ticker, network_name)
service_token_balance = get_token_balance(w3=w3,
account=account,
token=service_token)
service_token_in_deposit = get_token_deposit(w3=w3,
account=account,
token=service_token)
if service_token_balance.as_wei and service_token_in_deposit < required.service_token:
self._send_status_update(
f"Making deposit of {service_token_balance.formatted} for Raiden Services"
)
deposit_service_tokens(w3=w3,
account=account,
token=service_token,
amount=service_token_balance.as_wei)
service_token_deposited = get_token_deposit(w3=w3,
account=account,
token=service_token)
self._send_status_update(
f"Amount deposited at UDC: {service_token_deposited.formatted}"
)
self._send_status_update(
"Launching Raiden, this might take a couple of minutes, do not close the browser"
)
if not raiden_client.is_running:
raiden_client.launch(configuration_file)
try:
raiden_client.wait_for_web_ui_ready(
status_callback=lambda stat: log.info(str(stat)))
self._send_task_complete("Raiden is ready!")
self._send_redirect(raiden_client.WEB_UI_INDEX_URL)
except (RaidenClientError, RuntimeError) as exc:
self._send_error_message(f"Raiden process failed to start: {exc}")
raiden_client.kill()
def _deposit(self):
network = self._get_network()
w3 = self._get_web3()
ethereum_balance = self.account.get_ethereum_balance(w3=w3)
log.debug(f"Ethereum Balance: {ethereum_balance.formatted}")
if not ethereum_balance.as_wei:
network.fund(self.account)
token = Erc20Token.find_by_ticker(settings.service_token.ticker)
token_balance = get_token_balance(w3, self.account, token)
log.debug(f"Token Balance: {token_balance.formatted}")
if not token_balance.as_wei:
mint_tokens(w3, self.account, token)
token_balance = get_token_balance(w3, self.account, token)
log.debug(f"Tokens minted. New Balance: {token_balance.formatted}")
deposit_service_tokens(w3, self.account, token, token_balance.as_wei)
def _run_launch(self, **kw):
configuration_file_name = kw.get("configuration_file_name")
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
if not RAIDEN_CLIENT.is_installed:
self._send_status_update(
f"Downloading and installing raiden {RAIDEN_CLIENT.release}")
RAIDEN_CLIENT.install()
self._send_status_update("Installation complete")
account = configuration_file.account
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
service_token = Erc20Token.find_by_ticker(
settings.service_token.ticker)
service_token_balance = get_token_balance(w3=w3,
account=account,
token=service_token)
service_token_in_deposit = get_token_deposit(w3=w3,
account=account,
token=service_token)
if service_token_balance.as_wei and service_token_in_deposit < SERVICE_TOKEN_REQUIRED:
self._send_status_update(
f"Making deposit of {service_token_balance.formatted} for Raiden Services"
)
deposit_service_tokens(w3=w3,
account=account,
token=service_token,
amount=service_token_balance.as_wei)
service_token_deposited = get_token_deposit(w3=w3,
account=account,
token=service_token)
self._send_status_update(
f"Amount deposited at UDC: {service_token_deposited.formatted}"
)
self._send_status_update(
"Launching Raiden, this might take a couple of minutes, do not close the browser"
)
if not RAIDEN_CLIENT.is_running:
RAIDEN_CLIENT.launch(configuration_file)
try:
RAIDEN_CLIENT.wait_for_web_ui_ready()
self._send_task_complete("Raiden is ready!")
self._send_redirect(RAIDEN_CLIENT.WEB_UI_INDEX_URL)
except (RaidenClientError, RuntimeError) as exc:
self._send_error_message(f"Raiden process failed to start: {exc}")
RAIDEN_CLIENT.kill()
def test_udc_deposit(self):
self.network.fund(self.account)
self.account.wait_for_ethereum_funds(self.w3, EthereumAmount(0.01))
tx_hash = mint_tokens(self.w3, self.account, self.svt_token)
wait_for_transaction(self.w3, tx_hash)
amount = get_token_balance(self.w3, self.account, self.svt_token)
tx_hash = deposit_service_tokens(self.w3, self.account, self.svt_token,
amount.as_wei)
wait_for_transaction(self.w3, tx_hash)
deposited = get_token_deposit(self.w3, self.account, self.svt_token)
self.assertEqual(deposited, amount)
def check_balances(w3, account, settings, check_func):
balance = account.get_ethereum_balance(w3)
service_token = Erc20Token.find_by_ticker(settings.service_token.ticker,
settings.network)
udc_balance = get_token_deposit(w3, account, service_token)
transfer_token = Erc20Token.find_by_ticker(settings.transfer_token.ticker,
settings.network)
transfer_token_balance = get_token_balance(w3, account, transfer_token)
return (check_func(balance.as_wei) and check_func(udc_balance.as_wei)
and check_func(transfer_token_balance.as_wei))
def get(self, configuration_file_name):
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
network = configuration_file.network.name
account = configuration_file.account
try_unlock(account)
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
required = RequiredAmounts.for_network(network)
service_token = Erc20Token.find_by_ticker(
required.service_token.ticker, network)
transfer_token = Erc20Token.find_by_ticker(
required.transfer_token.ticker, network)
service_token_balance = get_total_token_owned(
w3=w3, account=configuration_file.account, token=service_token)
transfer_token_balance = get_token_balance(
w3=w3, account=configuration_file.account, token=transfer_token)
eth_balance = configuration_file.account.get_ethereum_balance(w3)
def serialize_balance(balance_amount):
return ({
"as_wei": balance_amount.as_wei,
"formatted": balance_amount.formatted
} if balance_amount else None)
self.render_json({
"url":
self.reverse_url("api-configuration-detail",
configuration_file.file_name),
"file_name":
configuration_file.file_name,
"account_page_url":
self.reverse_url("account", configuration_file.file_name),
"account":
configuration_file.account.address,
"network":
configuration_file.network.name,
"balance": {
"ETH": serialize_balance(eth_balance),
"service_token": serialize_balance(service_token_balance),
"transfer_token": serialize_balance(transfer_token_balance),
},
"_initial_funding_txhash":
configuration_file._initial_funding_txhash,
})
def get(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)
service_token = Erc20Token.find_by_ticker(
SERVICE_TOKEN_REQUIRED.ticker)
transfer_token = Erc20Token.find_by_ticker(
TRANSFER_TOKEN_REQUIRED.ticker)
service_token_balance = get_total_token_owned(
w3=w3, account=configuration_file.account, token=service_token)
transfer_token_balance = get_token_balance(
w3=w3, account=configuration_file.account, token=transfer_token)
eth_balance = configuration_file.account.get_ethereum_balance(w3)
def serialize_balance(balance_amount):
return ({
"as_wei": balance_amount.as_wei,
"formatted": balance_amount.formatted
} if balance_amount else None)
self.render_json({
"url":
self.reverse_url("api-configuration-detail",
configuration_file.file_name),
"file_name":
configuration_file.file_name,
"account_page_url":
self.reverse_url("account", configuration_file.file_name),
"funding_page_url":
self.reverse_url("funding", configuration_file.file_name),
"account":
configuration_file.account.address,
"network":
configuration_file.network.name,
"balance": {
"ETH": serialize_balance(eth_balance),
"service_token": serialize_balance(service_token_balance),
"transfer_token": serialize_balance(transfer_token_balance),
},
})
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)
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)
def _run_funding(self, **kw):
try:
configuration_file_name = kw.get("configuration_file_name")
configuration_file = RaidenConfigurationFile.get_by_filename(
configuration_file_name)
except Exception as exc:
self._send_error_message(str(exc))
return
network = configuration_file.network
if not network.FAUCET_AVAILABLE:
self._send_error_message(
f"Can not run automatic funding for {network.capitalized_name}"
)
return
account = configuration_file.account
try_unlock(account)
if account.passphrase is None:
self._send_error_message(
"Failed to unlock account! Please reload page")
return
w3 = make_web3_provider(
configuration_file.ethereum_client_rpc_endpoint, account)
self._send_status_update(
f"Obtaining {network.capitalized_name} ETH through faucet")
network.fund(account)
balance = account.wait_for_ethereum_funds(
w3=w3, expected_amount=EthereumAmount(0.01))
self._send_status_update(f"Account funded with {balance.formatted}")
service_token = Erc20Token.find_by_ticker(
self.installer_settings.service_token.ticker,
self.installer_settings.network)
if self.installer_settings.service_token.mintable:
self._send_next_step(
f"Minting {service_token.ticker}",
f"Fund Account with {service_token.ticker}",
3,
)
tx_hash = mint_tokens(w3, account, service_token)
wait_for_transaction(w3, tx_hash)
service_token_balance = get_token_balance(w3, account, service_token)
if service_token_balance.as_wei > 0:
self._deposit_to_udc(w3, account, service_token,
service_token_balance)
if self.installer_settings.transfer_token.mintable:
transfer_token = Erc20Token.find_by_ticker(
self.installer_settings.transfer_token.ticker,
self.installer_settings.network)
self._send_next_step(
f"Minting {transfer_token.ticker}",
f"Fund Account with {transfer_token.ticker}",
4,
)
tx_hash = mint_tokens(w3, account, transfer_token)
wait_for_transaction(w3, tx_hash)
self._send_redirect(self.reverse_url("launch",
configuration_file_name))
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))
