def is_genesis(self) -> bool:
recipient = wallet.get_public_key(0).dumpb()
if self.recipient != recipient:
return False
amount = 100 * util.get_nodes()
if self.amount != amount:
return False
if self.inputs != [TransactionInput(b"0", 0)]:
return False
if self.sender != b"0":
return False
if len(self.outputs) != 2:
return False
out0 = self.outputs[0]
if not (out0.index == 0 and \
out0.recipient == recipient and \
out0.amount == amount):
return False
out1 = self.outputs[1]
if not (out1.index == 1 and \
out1.recipient == b"0" and \
out1.amount == 0):
return False
if self.id != self.hash():
return False
if self.signature != b"0":
return False
return True
def test_util():
r = util.get_db()
r.flushdb()
util.set_nodes(NODES)
assert util.get_nodes() == NODES
util.set_node_id(NODE_ID)
assert util.get_node_id() == NODE_ID
peer_ids = util.get_peer_ids()
assert len(peer_ids) == NODES - 1
assert NODE_ID not in peer_ids
def genesis() -> 'Transaction':
recipient = wallet.get_public_key(0).dumpb()
amount = 100 * util.get_nodes()
gt = Transaction(recipient=recipient,
amount=amount,
inputs=[TransactionInput(b"0", 0)],
input_amount=amount)
gt.sender = b"0"
gt.outputs = [
TransactionOutput(0, recipient, amount),
TransactionOutput(1, b"0", 0)
]
gt.id = gt.hash()
gt.signature = b"0"
return gt
def getTotalNodes():
return util.get_nodes()
if _check_difficulty(digest, DIFFICULTY):
logging.debug(
"Miner %d finished (nonce %d, current %s, mining time %f)",
os.getpid(), nonce, util.bintos(digest),
time.time() - tstart)
b.nonce = nonce
b.current_hash = digest
if ECHO:
print(b.dumps())
else:
logging.debug("Miner %d broadcasting", os.getpid())
# NOTE: Yes, we send the block back to our own node through the
# network stack. This is the dumbest, slowest, but also the most
# robust way for now
# NOTE: We do a blocking broadcast, because otherwise the
# process will just terminate before actually making the
# requests (the requests are still sent concurrently). Since
# the listener will respond without blocking, this shouldn't be
# too big of a problem
chatter.broadcast_block(b,
list(range(util.get_nodes())),
blocking=True)
r = util.get_db()
with r.lock("blockchain:miner_pid:lock"):
r.delete("blockchain:miner_pid")
logging.debug("Miner %d cleared", os.getpid())
break
else:
nonce += 1