def get(self, request, *args, **kwargs):
block_hash = kwargs['hash']
block_info = w3_client.eth.getBlock(block_hash)
block_data = web3_to_dict(block_info)
miner = self.get_address(block_data['miner'])
existing_block = Block.objects.filter(hash=block_data['hash'])
if existing_block.exists():
block = existing_block.first()
block.difficulty = block_data['difficulty']
block.gas_limit = block_data['gasLimit']
block.gas_used = block_data['gasUsed']
block.hash = block_data['hash']
block.miner = miner
block.nonce = block_data['nonce']
block.number = block_data['number']
block.parent_hash = Block.objects.filter(
hash=block_data['parentHash']).first()
block.size = block_data['size']
block.timestamp = block_data['timestamp']
block.total_difficulty = block_data['totalDifficulty']
block.save()
else:
# Create Block Instance
block = Block()
block.difficulty = block_data['difficulty']
block.gas_limit = block_data['gasLimit']
block.gas_used = block_data['gasUsed']
block.hash = block_data['hash']
block.miner = miner
block.nonce = block_data['nonce']
block.number = block_data['number']
block.parent_hash = Block.objects.filter(
hash=block_data['parentHash']).first()
block.size = block_data['size']
block.timestamp = block_data['timestamp']
block.total_difficulty = block_data['totalDifficulty']
block.save()
# Create transactions for block
for transaction in block_data['transactions']:
transaction_info = w3_client.eth.getTransaction(transaction)
transaction_data = web3_to_dict(transaction_info)
existing_transaction = Transaction.objects.filter(
hash=transaction_data['hash'])
if existing_transaction.exists():
transaction = existing_transaction.first()
transaction.block_hash = block
transaction.block_number = block.number
# transaction.cumulative_gas_used = ''
transaction.created_contract_address_hash = None
transaction.error = ''
transaction.from_address_hash = self.get_address(
transaction_data['from'])
transaction.gas = transaction_data['gas']
transaction.gas_price = transaction_data['gasPrice']
transaction.gas_used = (transaction_data['gas'] *
transaction_data['gasPrice'])
transaction.hash = transaction_data['hash']
transaction.index = transaction_data['transactionIndex']
transaction.input = transaction_data['input']
transaction.internal_transactions_indexed_at = None
transaction.nonce = transaction_data['nonce']
transaction.r = transaction_data['r']
transaction.s = transaction_data['s']
# transaction.status = ''
transaction.to_address_hash = self.get_address(
transaction_data['to'])
transaction.v = transaction_data['v']
transaction.value = transaction_data['value']
transaction.save()
else:
transaction = Transaction()
transaction.block_hash = block
transaction.block_number = block.number
# transaction.cumulative_gas_used = ''
transaction.created_contract_address_hash = None
transaction.error = ''
transaction.from_address_hash = self.get_address(
transaction_data['from'])
transaction.gas = transaction_data['gas']
transaction.gas_price = transaction_data['gasPrice']
transaction.gas_used = (transaction_data['gas'] *
transaction_data['gasPrice'])
transaction.hash = transaction_data['hash']
transaction.index = transaction_data['transactionIndex']
transaction.input = transaction_data['input']
transaction.internal_transactions_indexed_at = None
transaction.nonce = transaction_data['nonce']
transaction.r = transaction_data['r']
transaction.s = transaction_data['s']
# transaction.status = ''
transaction.to_address_hash = self.get_address(
transaction_data['to'])
transaction.v = transaction_data['v']
transaction.value = transaction_data['value']
transaction.save()
# Create uncle block if exists
for uncle in block_data['uncles']:
uncle_info = w3_client.eth.getBlock(uncle)
uncle_data = web3_to_dict(uncle_info)
miner = self.get_address(uncle_data['miner'])
existing_uncle_block = Block.objects.filter(
hash=uncle_data['hash'])
if existing_uncle_block.exists():
uncle_block = existing_uncle_block.first()
uncle_block.consensus = False
uncle_block.difficulty = uncle_data['difficulty']
uncle_block.gas_limit = uncle_data['gasLimit']
uncle_block.gas_used = uncle_data['gasUsed']
uncle_block.hash = uncle_data['hash']
uncle_block.miner = miner
uncle_block.nonce = uncle_data['nonce']
uncle_block.number = uncle_data['number']
uncle_block.parent_hash = Block.objects.filter(
hash=uncle_data['parentHash']).first()
uncle_block.size = uncle_data['size']
uncle_block.timestamp = uncle_data['timestamp']
uncle_block.total_difficulty = uncle_data['totalDifficulty']
uncle_block.save()
else:
uncle_block = Block()
uncle_block.consensus = False
uncle_block.difficulty = uncle_data['difficulty']
uncle_block.gas_limit = uncle_data['gasLimit']
uncle_block.gas_used = uncle_data['gasUsed']
uncle_block.hash = uncle_data['hash']
uncle_block.miner = miner
uncle_block.nonce = uncle_data['nonce']
uncle_block.number = uncle_data['number']
uncle_block.parent_hash = Block.objects.filter(
hash=uncle_data['parentHash']).first()
uncle_block.size = uncle_data['size']
uncle_block.timestamp = uncle_data['timestamp']
uncle_block.total_difficulty = uncle_data['totalDifficulty']
uncle_block.save()
# Save relation between nephew and uncle
SecondDegreeRelation.objects.get_or_create(
nephew_hash=block,
uncle_hash=uncle_block,
defaults={'uncle_fetched_at': block.timestamp})
# Save transaction relation for uncle block
transaction_index = 0
for transaction in uncle_data['transactions']:
transaction = Transaction.objects.filter(hash=transaction)
if not transaction.exists():
continue
Fork.objects.create(hash=transaction.first(),
index=transaction_index,
uncle_hash=uncle_block)
transaction_index += 1
return JsonResponse(status=200, data=block_data, safe=False)
