def process_request(self, request):
w3 = get_w3()
try:
sync_now = w3.eth.syncing
except Exception as e:
return HttpResponse('Node disabled', status=503)
else:
return sync_now and HttpResponse('Node syncing now', status=503)
def deploy_new_company(company_id):
"""
Deploy new company contract
:param company_id: Company off chain id for deploy
:return: True in case of successful, false otherwise
"""
try:
instance = Company.objects.get(pk=company_id)
except Company.DoesNotExist:
logger.error(
'Company with id {} not found, contract will bot be deployed.'.
format(company_id))
return False
else:
oracle = OracleHandler()
w3 = utils.get_w3()
contract_file = 'dapp/contracts/Company.sol'
compile_sol = compile_files([
contract_file,
],
output_values=(
"abi",
"ast",
"bin",
"bin-runtime",
))
create_abi(compile_sol[contract_file + ':Company']['abi'], 'Company')
obj = w3.eth.contract(
abi=compile_sol[contract_file + ':Company']['abi'],
bytecode=compile_sol[contract_file + ':Company']['bin'],
bytecode_runtime=compile_sol[contract_file +
':Company']['bin-runtime'],
)
args = [
settings.VERA_COIN_CONTRACT_ADDRESS,
settings.VERA_ORACLE_CONTRACT_ADDRESS,
]
logger.info('Try to unlock account: {}.'.format(
oracle.unlockAccount()))
try:
txn_hash = obj.deploy(transaction={'from': oracle.account},
args=args)
except Exception as e:
logger.warning(
'Error while deploy new company contract. Company {}: {}'.
format(company_id, e))
else:
logger.info('Lock account: {}'.format(oracle.lockAccount()))
save_txn.delay(txn_hash.hex(), 'NewCompany',
instance.created_by.id, company_id)
save_txn_to_history.delay(instance.created_by.id, txn_hash.hex(),
'Creation of a new Company contract')
def __init__(self, contract_address, account=None, password=None):
self.web3 = utils.get_w3()
self.account = account or settings.WEB_ETH_COINBASE
self.contract_address = contract_address
try:
with open(settings.ABI_PATH + 'Company.abi.json', 'r') as ad:
self.abi = json.load(ad)
except FileNotFoundError:
path = 'dapp/contracts/Company.sol'
compiled = compile_files([path, ],
output_values=("abi", "ast", "bin", "bin-runtime",))
with open(settings.ABI_PATH + 'Company.abi.json', 'w+') as ad:
ad.write(json.dumps(compiled[path + ':Company']['abi']))
self.abi = compiled[path + ':Company']['abi']
self.__password = password or settings.COINBASE_PASSWORD_SECRET
self.contract = self.web3.eth.contract(abi=self.abi, address=self.contract_address)