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 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)