def new_block(data):
try:
new_block = fill_newblock_info(data)
except BlockChainError as e:
warning = 'Do not accept block "{}"'.format(e)
log.warning(warning)
return False
except Exception:
error = "error on accept new block"
log.error(error, exc_info=True)
return False
try:
if new_insert_block(new_block):
update_info_for_generate()
log.info("Accept new block {}".format(new_block))
return True
else:
return False
except BlockChainError as e:
error = 'Failed accept new block "{}"'.format(e)
log.error(error, exc_info=True)
return False
except Exception:
error = "error on accept new block"
log.error(error, exc_info=True)
return False
def mined_newblock(que):
"""new thread, broadcast mined block to network"""
assert V.P2P_OBJ, "PeerClient is None"
while not P.F_STOP:
try:
new_block = que.get(timeout=1)
new_block.create_time = int(time())
if P.F_NOW_BOOTING:
log.debug("self reject, mined but now booting")
continue
elif new_block.height != chain_builder.best_block.height + 1:
log.debug("self reject, mined but its old block")
continue
else:
log.debug("Mined block check success")
if new_insert_block(new_block):
log.info("Mined new block {}".format(new_block.getinfo()))
else:
log.debug("self reject, cannot new insert")
update_info_for_generate()
continue
proof_tx = new_block.txs[0]
txs_hash_list = [tx.hash for tx in new_block.txs]
data = {
'cmd': BroadcastCmd.NEW_BLOCK,
'data': {
'binary': new_block.b,
'height': new_block.height,
'txs': txs_hash_list,
'proof': proof_tx,
'block_flag': new_block.flag,
}
}
try:
V.P2P_OBJ.send_command(cmd=Peer2PeerCmd.BROADCAST, data=data)
log.info("Success broadcast new block {}".format(new_block))
update_info_for_generate()
except TimeoutError:
log.warning(
"Failed broadcast new block, other nodes don\'t accept {}".
format(new_block.getinfo()))
except queue.Empty:
if V.P2P_OBJ.f_stop:
log.debug("Mined new block closed")
break
except BlockChainError as e:
log.error('Failed mined new block "{}"'.format(e))
except Exception as e:
log.error("mined_newblock()", exc_info=True)
def new_tx(data):
try:
new_tx: TX = data['tx']
check_tx_time(new_tx)
fill_verified_addr_tx(new_tx)
check_tx(tx=new_tx, include_block=None)
if new_tx.type in (C.TX_VALIDATOR_EDIT, C.TX_CONCLUDE_CONTRACT):
tx_builder.marge_signature(tx=new_tx)
else:
tx_builder.put_unconfirmed(tx=new_tx)
log.info("Accept new tx {}".format(new_tx))
update_info_for_generate(u_block=False,
u_unspent=False,
u_unconfirmed=True)
return True
except BlockChainError as e:
error = 'Failed accept new tx "{}"'.format(e)
log.error(error, exc_info=True)
return False
except Exception:
error = "Failed accept new tx"
log.error(error, exc_info=True)
return False
def send_newtx(new_tx, outer_cur=None, exc_info=True):
assert V.P2P_OBJ, "PeerClient is None"
try:
check_tx_time(new_tx)
check_tx(new_tx, include_block=None)
data = {'cmd': BroadcastCmd.NEW_TX, 'data': {'tx': new_tx}}
V.P2P_OBJ.send_command(cmd=Peer2PeerCmd.BROADCAST, data=data)
if new_tx.type in (C.TX_VALIDATOR_EDIT, C.TX_CONCLUDE_CONTRACT):
tx_builder.marge_signature(tx=new_tx)
else:
tx_builder.put_unconfirmed(tx=new_tx)
log.info("Success broadcast new tx {}".format(new_tx))
update_info_for_generate(u_block=False,
u_unspent=True,
u_unconfirmed=True)
return True
except Exception as e:
log.warning(
"Failed broadcast new tx, other nodes don\'t accept {}".format(
new_tx.getinfo()))
log.warning("Reason is \"{}\"".format(e))
log.debug("traceback,", exc_info=exc_info)
return False
def _main_loop():
while not P.F_STOP:
sleep(1)
if P.F_NOW_BOOTING is False:
continue
if chain_builder.best_block is None:
continue
if not back_sync_thread.is_alive():
raise Exception('BackSync is dead!')
# start fast sync
my_best_block: Block = chain_builder.best_block
start_height = my_best_block.height
start_time = time()
# first of all
back_que.put(my_best_block.height + 1)
while True:
new_block: Block = get_block_from_stack(my_best_block.height + 1)
# check blockchain continuity
if new_block is None:
log.debug(
"request height is higher than network height! sync will not need?"
)
stack_dict.clear()
break
if chain_builder.root_block is not None\
and chain_builder.root_block.height is not None\
and new_block.height <= chain_builder.root_block.height:
log.error("cannot rollback block depth height={}".format(
new_block.height))
P.F_STOP = True
return
if new_block.hash in chain_builder.chain:
log.debug("new block is already known {}".format(new_block))
my_best_block = chain_builder.get_block(
blockhash=new_block.hash)
continue
if my_best_block.hash != new_block.previous_hash:
log.debug(
"not chained my_best_block with new_block, rollback to {}".
format(my_best_block.height - 1))
my_best_block = chain_builder.get_block(
blockhash=my_best_block.previous_hash)
back_que.put(my_best_block.height + 1)
continue
if len(new_block.txs) <= 0:
log.debug("something wrong?, rollback to {}".format(
my_best_block.height - 1))
my_best_block = chain_builder.get_block(
blockhash=my_best_block.previous_hash)
back_que.put(my_best_block.height + 1)
continue
# insert
if not new_insert_block(
block=new_block, f_time=False, f_sign=False):
log.debug("failed to insert new block, rollback to {}".format(
my_best_block.height - 1))
my_best_block = chain_builder.get_block(
blockhash=my_best_block.previous_hash)
back_que.put(my_best_block.height + 1)
continue
# request next chunk
if len(stack_dict) < STACK_CHUNK_SIZE:
if 0 < len(stack_dict):
back_que.put(max(stack_dict) + 1)
else:
back_que.put(new_block.height + 1)
# check reached top height
best_height_on_network, best_hash_on_network = get_best_conn_info()
if new_block.height < best_height_on_network:
my_best_block = new_block
continue
else:
log.info("reached max height of network height={}".format(
best_height_on_network))
stack_dict.clear()
break
# get unconfirmed txs
log.info("next get unconfirmed txs")
unconfirmed_txhash_set = set()
for data in ask_all_nodes(cmd=DirectCmd.UNCONFIRMED_TX):
unconfirmed_txhash_set.update(data['txs'])
unconfirmed_txs = list()
for txhash in unconfirmed_txhash_set:
if txhash in tx_builder.unconfirmed:
continue
try:
tx: TX = seek_nodes(cmd=DirectCmd.TX_BY_HASH,
data={'txhash': txhash})
tx.height = None
fill_verified_addr_tx(tx)
unconfirmed_txs.append(tx)
except BlockChainError as e:
log.debug("1: Failed get unconfirmed {} '{}'".format(
txhash.hex(), e))
with create_db(V.DB_ACCOUNT_PATH) as db:
cur = db.cursor()
for tx in sorted(unconfirmed_txs, key=lambda x: x.time):
try:
check_tx_time(tx)
check_tx(tx, include_block=None)
tx_builder.put_unconfirmed(tx=tx, outer_cur=cur)
except BlockChainError as e:
log.debug("2: Failed get unconfirmed '{}'".format(e))
# fast sync finish
log.info("fast sync finished start={} finish={} {}m".format(
start_height, chain_builder.best_block.height,
int((time() - start_time) / 60)))
P.F_NOW_BOOTING = False
update_info_for_generate()
log.info("close by F_STOP flag")