def vote_delegated_node():
transactions = transaction.get_transactions()
current_mk_root = merkle_tree(transactions)
delegated_node = (long(current_mk_root, 16) % 5) + 1
return delegated_node
def show_transaction_list():
from app import transaction, log
import logging
tx_list = transaction.get_transactions()
if len(tx_list) == 0:
print("No Transaction\n")
main_menu()
else:
for t in tx_list:
log.write(t.message, logging.DEBUG)
main_menu()
def list_all_transaction(): for t in transaction.get_transactions(): time_stamp = datetime.datetime.__str__(t.time_stamp) log.write( "\n++++++++++ Transaction ID: "+ t.tx_id +" ++++++++++" "\nData: "+ t.message + "\n거래시각: "+ time_stamp + "\n공개키: "+ t.pub_key + "\n서명: "+ t.signature + "\n유형: "+ t.type + "\n+++++++++++++++++++++++++++++++++++++++++++++++++++++", logging.DEBUG)
def create_block():
diff_bits = 5
transactions = transaction.get_transactions()
# transaction이 없을 경우 block을 생성하지 않음
if (len(transactions) == 0):
print("No transactions...")
return
# 내 node가 가지고 있는 마지막 블럭
last_block = block.get_last_block()
#transaction JSON 문자열로 변환
transactions_str = []
for tx in transactions:
transactions_str.append(tx.to_json())
# transaction 으로부터 merkle root 생성
merkle_root = merkle_tree(transactions_str)
# block 새로 생성
_block = Block()
# 마지막 블록이 있는 경우
if last_block:
# last bock 에 대한 정보 저장
_block.prev_block_id = last_block.block_id
_block.prev_block_hash = last_block.block_hash
# 작업 증명을 위해 nonce값과 결과 생성
_block.block_id = last_block.block_id + 1
_block.merkle_root = merkle_root
_block.difficulty = diff_bits
block_header = _block.getheader_json()
hash_result, nonce = proof_of_work(block_header, diff_bits)
# block 정보
_block.block_hash = hash_result
_block.nonce = nonce
_block.tx_list = transactions_str
# 내 node에 block 저장
block.append_block(_block)
# 내 node가 가지고 있는 transaction 삭제
transaction.remove_all()
# 나머지 node에게 block 전송
sender.send_to_all_node((_block.to_json()), except_my_node=True)
def create_block(): transactions = transaction.get_transactions() # transaction이 없을 경우 block을 생성하지 않음 if len(transactions) == 0: return # 내 node 가 가지고 있는 마지막 블럭 last_block = block.get_last_block() # transaction JSON 문자열로 변환 transactions_str = list(map(lambda x: x.to_json(), transactions)) # transaction으로부터 merkle root 생성 merkle_root = merkle_tree(transactions_str) # block 정보에 merkle root 할당 block_info = merkle_root # block 새로 생성 _block = Block() # 마지막 block이 있는 경우 if last_block: # block 정보에 마지막 블럭의 해쉬를 더함 block_info += last_block.block_hash # 새로 생성한 block에 이전 block 정보 저장 _block.prev_block_hash = last_block.block_hash _block.prev_block_id = last_block.block_id # 작업 증명을 통해 nonce값과 hash 결과 생성 hash_result, nonce = proof_of_work(block_info, diff_bits=5) # block 정보 _block.block_hash = hash_result _block.nonce = nonce _block.block_info = block_info _block.time_stamp = datetime.datetime.now() # 내 node 에 block 저장 block.create_block(_block) # 내 node가 가지고 있는 transaction 삭제 transaction.remove_all() # 나머지 node에게 block 전송 sender.send_to_all_node((_block.to_json()), except_my_node=True)
def create_block():
transactions = transaction.get_transactions()
# transaction이 없을 경우 block을 생성하지 않음
if len(transactions) == 0:
return
_block = block.create_block(transactions)
block.store_block(_block)
# 내 node가 가지고 있는 transaction 삭제
transaction.remove_all()
# 나머지 node에게 block 전송
sender.send_to_all_node((_block.to_json()), except_my_node=True)
def list_all_transaction():
print("=== list all transactions ===")
for t in transaction.get_transactions():
print(t)
def list_all_transaction():
import logging
for t in transaction.get_transactions():
log.write(t, logging.DEBUG)
