def add_transaction():
try:
transaction_json = request.get_json(force=True)
private_key = transaction_json['privateKey']
public_key = transaction_json['publicKey']
value = float(transaction_json['value'])
if not re.match(r'[\da-f]{66}$', public_key):
return jsonify({'message': 'Invalid address'}), 400
if value < 1:
return jsonify({'message': 'Invalid amount. Minimum allowed amount is 1'}), 400
wallet = KeyPair(private_key)
if(public_key == wallet.public_key):
return jsonify({'message': 'Destination same as source'}), 400
balance = blockchain.get_balance(wallet.public_key)
balance_discount = blockchain.get_balance_discount(wallet.public_key)
if balance + balance_discount < value:
return jsonify({'message': 'Insuficient amount of coins'}), 400
transaction = wallet.create_transaction(public_key, value)
send_transaction = json.dumps({
'source': transaction.source,
'destination': transaction.destination,
'amount': transaction.amount,
'fee': transaction.fee,
'timestamp': transaction.timestamp,
'tx_hash': transaction.tx_hash,
'signature': transaction.signature
})
blockchain.add_transaction(transaction)
announce_new_transaction(send_transaction)
return jsonify({'message': f'Pending transaction {transaction.tx_hash} added to the Blockchain'}), 201
except BlockchainException as bce:
return jsonify({'message': f'Transaction rejected: {bce}'}), 400
def add_transaction2(private_key, public_key, value):
try:
wallet = KeyPair(private_key)
transaction = wallet.create_transaction(public_key, float(value))
blockchain.add_transaction(transaction)
return jsonify({'message': f'Pending transaction {transaction.tx_hash} added to the Blockchain'}), 201
except BlockchainException as bce:
return jsonify({'message': f'Transaction rejected: {bce}'}), 400
def generatePublicKey():
json = request.get_json(force=True)
wallet = KeyPair(json["private_key"])
data = {
'public_key':wallet.public_key
}
return jsonify(data), 200
def generateWallet():
wallet = KeyPair()
data = {
'private_key':wallet.private_key,
'public_key':wallet.public_key
}
return jsonify(data), 200
def generate_key():
wallet = KeyPair()
rs = [{
'private_key': f'{wallet.private_key}'
}, {
'public_key': f'{wallet.public_key}'
}]
return jsonify(rs), 200
def minerarBloco(self, address):
wallet = KeyPair(address)
r = requests.get('https://uclcriptocoin.herokuapp.com/block/minable/' +
wallet.public_key)
print(r.text)
last_block = json.loads(r.text)
block = Block.from_dict(last_block["block"])
difficulty = last_block["difficulty"]
while block.current_hash[:difficulty].count('0') < difficulty:
block.nonce += 1
block.recalculate_hash()
data = json.dumps(block, default=lambda x: x.__dict__)
r = requests.post('https://uclcriptocoin.herokuapp.com/block',
data,
json=True)
print(r.text)
def generatePublicKey(address):
wallet = KeyPair(address)
data = {
'public_key':wallet.public_key
}
return jsonify(data), 200