def __init__(self, address=None):
self._bucket = Bucket(Blockchain.db_file, Blockchain.block_bucket)
try:
self._tip = self._bucket.get('l')
except KeyError:
genesis = NewGnesisBlock().pow_of_block()
self._block_put(genesis)
def __init__(self):
self._bucket = Bucket(Blockchain.db_file, Blockchain.block_bucket)
try:
self._tip = self._bucket.get('l')
except KeyError:
self._tip = None
def reset(self):
self._bucket = Bucket(UTXOSet.db_file, UTXOSet.bucket)
self._bucket.reset()
utxos = self._bc.find_all_utxo()
for tx_id, vout_idx in utxos.items():
self._bucket.put(tx_id, utils.serialize(vout_idx))
self._bucket.commit()
def __init__(self, address=None):
self._bucket = Bucket(Blockchain.db_file, Blockchain.block_bucket)
try:
self._tip = self._bucket.get('l')
except KeyError:
cb_tx = CoinbaseTx(address, Blockchain.genesis_coinbase_data)
genesis = Block([cb_tx]).pow_of_block()
self._block_put(genesis)
def __init__(self, address=None):
self._bucket = Bucket(BlockChain.db_file, BlockChain.block_bucket)
try:
self._tip = self._bucket.get('l')
except KeyError:
if not address:
self._tip = None
else:
cb_tx = CoinbaseTx(address, BlockChain.genesis_coinbase_data)
genesis = Block([cb_tx], 0).proof_of_block()
self._put_block(genesis)
def __init__(self, address=None):
self._bucket = Bucket(BlockChain.db_file, BlockChain.bucket)
try:
self._address = self._bucket.get('address')
self._last_hash = self._bucket.get('l')
self._last_block = pickle.loads(self._bucket.get(self._last_hash))
except KeyError:
if not address: # no data & no given address
print('Block Chain not created yet!\nPlease create a new block chain with given address first!')
sys.exit()
else:
self.reset(address)
def update(self, block):
self._bucket = Bucket(UTXOSet.db_file, UTXOSet.bucket)
transactions = block.transactions
for tx in transactions:
if not isinstance(tx, CoinBaseTx):
for vin in tx.vin:
update_outs = []
encoded_outs = self._bucket.get(vin.txid)
outs = utils.deserialize(encoded_outs)
for out_idx, out in enumerate(outs):
if out_idx != vin.vout_idx:
update_outs.append(out)
if len(update_outs) == 0:
self._bucket.delete(vin.txid)
else:
self._bucket.put(
vin.txid, utils.serialize(update_outs))
new_output = [out for out in tx.vout]
self._bucket.put(tx.id, utils.serialize(new_output))
self._bucket.commit()
def __init__(self, blockchain):
self._bucket = Bucket(UTXOSet.db_file, UTXOSet.utxo_bucket)
self._bc = blockchain
from block import Block
from blockchain import Blockchain
from db import Bucket
if __name__ == "__main__":
# blockchain = Blockchain()
# print(blockchain)
# blockchain.addBlock('addBlock')
# print(blockchain)
bucket = Bucket('test.db', 'block')
bucket2 = Bucket('test.db', 'block2')
bucket['key1'] = 'value'
print(bucket['key'])
bucket2['key2'] = 'value'
bucket.commit()
bucket2.commit()
print(bucket)
print(bucket2)
def __init__(self):
self._blocks = Bucket(DB_FILE, BLOCK_BUCKET)