def get_block(self, index: int) -> Block:
"""取出指定索引块"""
with self.__auto_commit() as cusor:
fet = cusor.execute(
f"select block from blockchain where \"index\"={index}")
b = fet.fetchone()[0]
return Block.load(b)
def run():
"""接收区块，广播区块线程"""
while self.server_flag:
node, msg = B_mailbox.get()
if msg.type == "PUT":
if msg.command == "BLOCK": # 添加新块，广播新块
block = Block.load(msg.data)
if self.add_new_block(block):
NetworkRouting.get_instance().broad_a_msg(msg)
elif msg.type == "GET":
pass # TODO
def recv_broad_transaction():
"""接收交易、广播交易的进程"""
while self.server_flag: # 阻塞在取trans的地方
node, msg = M_mailbox.get()
if msg.type == "PUT":
if msg.command == "TRANS":
trans = Transaction.load(msg.data)
if trans != self.trans_later and self.add_trans(trans):
self.trans_later = trans
NetworkRouting.get_instance().broad_a_msg(
msg) # 广播交易
elif msg.command == "BLOCK": # 其它进程先挖到，暂停挖矿
block = Block.load(msg.data)
if self.block_later != block and Verify.verify_new_block(
block) and FullBlockChain.get_instance(
).get_top_hash() == block.get_hash():
self.accept_block(block)
def get_blocks(self) -> List[Block]:
"""取出所有块"""
with self.__auto_commit() as cusor:
fet = cusor.execute(
"select block from blockchain order by \"index\"")
return [Block.load(b[0]) for b in fet.fetchall()]
