def mine():
"""
Main miner method.
"""
# Found last block and unchecked transactions.
last_block = BlockChainDB().last()
if len(last_block) == 0:
last_block = coinbase().to_dict()
untxdb = UnTransactionDB()
# Miner reward
rw = reward()
untxs = untxdb.find_all()
untxs.append(rw.to_dict())
# untxs_dict = [untx.to_dict() for untx in untxs]
untx_hashes = untxdb.all_hashes()
# Clear the untransaction database.
untxdb.clear()
# Miner reward is the first transaction.
untx_hashes.insert(0, rw.hash)
cb = Block(last_block['index'] + 1, int(time.time()), untx_hashes,
last_block['hash'])
nouce = cb.pow()
cb.make(nouce)
# Save block and transactions to database.
BlockChainDB().insert(cb.to_dict())
TransactionDB().insert(untxs)
# Broadcast to other nodes
Block.spread(cb.to_dict())
Transaction.blocked_spread(untxs)
return cb
def transfer(cls, from_addr, to_addr, amount):
if not isinstance(amount, int):
amount = int(amount)
unspents = Vout.get_unspent(from_addr)
ready_utxo, change = select_outputs_greedy(unspents, amount)
print('ready_utxo', ready_utxo[0].to_dict())
vin = ready_utxo
vout = []
vout.append(Vout(to_addr, amount))
vout.append(Vout(from_addr, change))
tx = cls(vin, vout)
tx_dict = tx.to_dict()
UnTransactionDB().insert(tx_dict)
return tx_dict
def getUntransactions():
utxdb= UnTransactionDB()
utxs= utxdb.read()
utxs= [ fromDict(utx) for utx in utxs]
return utxs
def createTransaction(sender, recipientID, value):
tx= Transaction(sender, recipientID, value)
tx_dict = tx.to_dict()
UnTransactionDB().insert(tx_dict)
return tx
def createTransaction(organization, recipientID, recCode, date, period):
tx = Transaction(organization, recipientID, recCode, date, period)
tx_dict = tx.to_dict()
UnTransactionDB().insert(tx_dict)
return tx
def get_all_untransactions():
UnTransactionDB().all_hashes()
def new_untransaction(self,untx):
cprint(__name__,untx)
UnTransactionDB().insert(untx)
cprint('INFO',"Receive new unchecked transaction.")
return True
def new_block(self,block):
cprint(__name__, block)
BlockChainDB().insert(block)
UnTransactionDB().clear()
cprint('INFO',"Receive new block.")
return True