def __mine(self, mempool: Set[Transaction], chain: Chain,
wallet: Wallet) -> Block:
c_pool = list(copy.deepcopy(mempool))
mlist = self.__calculate_transactions(c_pool)
logger.debug(len(mlist))
block_header = BlockHeader(
version=consts.MINER_VERSION,
height=chain.length,
prev_block_hash=dhash(chain.header_list[-1]),
merkle_root=merkle_hash(mlist),
timestamp=int(time.time()),
signature="",
)
sign = wallet.sign(dhash(block_header))
block_header.signature = sign
block = Block(header=block_header, transactions=mlist)
r = requests.post("http://0.0.0.0:" + str(consts.MINER_SERVER_PORT) +
"/newblock",
data=compress(block.to_json()))
if r.text == "Block Received":
vjti_chain_relayer = VJTIChainRelayer(wallet)
vjti_chain_relayer.new_block(block)
logger.info(f"Miner: Mined Block with {len(mlist)} transaction(s)")
return block
else:
logger.info(
f"Miner: Could not mine block with {len(mlist)} transaction(s)"
)
return None
def __mine(self, mempool: Set[Transaction], chain: Chain,
payout_addr: str) -> Block:
c_pool = list(copy.deepcopy(mempool))
mlist, fees = self.__calculate_best_transactions(c_pool)
# logger.debug(f"Miner: Will mine {len(mlist)} transactions and get {fees} scoins in fees")
coinbase_tx_in = {
0:
TxIn(payout=None,
sig="Receiving some Money",
pub_key="Does it matter?")
}
coinbase_tx_out = {
0: TxOut(amount=chain.current_block_reward(), address=payout_addr),
1: TxOut(amount=fees, address=payout_addr),
}
coinbase_tx = Transaction(
is_coinbase=True,
version=consts.MINER_VERSION,
fees=0,
timestamp=int(time.time()),
locktime=-1,
vin=coinbase_tx_in,
vout=coinbase_tx_out,
)
mlist.insert(0, coinbase_tx)
block_header = BlockHeader(
version=consts.MINER_VERSION,
height=chain.length,
prev_block_hash=dhash(chain.header_list[-1]),
merkle_root=merkle_hash(mlist),
timestamp=int(time.time()),
target_difficulty=chain.target_difficulty,
nonce=0,
)
DONE = False
for n in range(2**64):
block_header.nonce = n
bhash = dhash(block_header)
if chain.is_proper_difficulty(bhash):
block = Block(header=block_header, transactions=mlist)
requests.post("http://0.0.0.0:" +
str(consts.MINER_SERVER_PORT) + "/newblock",
data=compress(block.to_json()))
logger.info(
f"Miner: Mined Block with {len(mlist)} transactions, Got {fees} in fees and {chain.current_block_reward()} as reward"
)
DONE = True
break
if not DONE:
logger.error(
"Miner: Exhausted all 2 ** 64 values without finding proper hash"
)