def generate_block(difficulty, merkle_root, transactions):
try:
'set block header info'
monitoring.log("log.=================================")
monitoring.log("log.Generate Block.")
start_time = time.time()
prev_block_height, prev_hash = file_controller.get_last_block() # TODO: type error 발생 must be str , not int
# if type(prev_block_height) is not int:
# prev_block_height = int(prev_block_height)
# if type(prev_hash) is not str:
# prev_hash = str(prev_hash)
block_info = merkle_root + prev_hash
vote_result = difficulty
monitoring.log("log.Mining Block.")
block_hash, nonce, tryanderror = proof_of_work.proof_of_work(
block_info, difficulty)
timestamp = int(round(time.time()*1000.0)) # UTC timestamp rule
monitoring.log("log.Create Block Header.")
block_header = block.BlockHeader(
prev_hash, nonce, merkle_root, vote_result, str(timestamp))
block_header.block_id = "test_block_id"
block_header.block_number = int(prev_block_height) + 1
block_header.block_hash = block_hash
block_header.block_info = block_info
block_header.miner = nodeproperty.Total_peer_num
block_header.num_tx = len(transactions)
monitoring.log("log.Create Block.")
new_block = block.Block(block_header, transactions)
json_new_block = json.dumps(
new_block, indent=4, default=lambda o: o.__dict__, sort_keys=True)
monitoring.log("log.Generate block complete")
monitoring.log("log. ")
# end_time = time.time()
# elapsed_time = end_time - start_time
# monitoring.log("log.Block Generate Time Time: "+str(elapsed_time)+" seconds")
# tps = voting.TransactionCountForConsensus / elapsed_time
# print("log.Transaction per second : "+ str(tps))
file_controller.remove_all_transactions()
file_controller.remove_all_voting()
sender.send_to_all_peers(json_new_block,nodeproperty.My_receiver_port)
# sender.send_to_all(json_new_block)
monitoring.log("log.Send block complete")
except TypeError as te:
print("@generate block", te)
def genesisblock_generate():
transaction = "Base lab logchain project"
prev_hash = "N/A"
nonce = "N/A"
merkle_root = hashlib.sha256(str(transaction).encode('utf-8')).hexdigest()
vote_result = "N/A"
timestamp = "20170904"
block_header = block.BlockHeader(
prev_hash, nonce, merkle_root, vote_result, timestamp)
block_header.block_id = 'genesis_block'
block_header.block_number = "1"
block_header.block_info = block_header.prev_hash + block_header.merkle_root
block_header.block_hash = hashlib.sha256(
str(block_header.block_info).encode('utf-8')).hexdigest()
block_header.miner = "Base Lab"
block_header.num_tx = "1"
genesisblock = block.Block(block_header, transaction)
json_genesisblock = json.dumps(
genesisblock, indent=4, default=lambda o: o.__dict__, sort_keys=True)
file_controller.create_new_block(
str(block_header.block_number), json_genesisblock)
logging.debug('Genesis block created now.')
logging.debug(" - block hash: "+ block_header.block_hash)
logging.debug(" - block ID: " + block_header.block_id)
logging.debug(" - block info: " + block_header.block_info)
logging.debug(" - block transaction: " + transaction)
def generate_block(difficulty, merkle_root, transactions):
try:
'set block header info'
print("=================================")
print("Generate Block")
start_time = time.time()
prev_block_height, prev_hash = file_controller.get_last_block()
block_info = merkle_root + prev_hash
vote_result = difficulty
'mining block'
block_hash, nonce, tryanderror = proof_of_work.proof_of_work(
block_info, difficulty)
timestamp = time.strftime('%Y%m%d%H%M%S', time.localtime())
'create block header'
block_header = block.BlockHeader(
prev_hash, nonce, merkle_root, vote_result, timestamp)
block_header.block_id = "test_block_id"
block_header.block_number = int(prev_block_height) + 1
block_header.block_hash = block_hash
block_header.block_info = block_info
block_header.miner = nodeproperty.Total_peer_num
block_header.num_tx = len(transactions)
'create block'
new_block = block.Block(block_header, transactions)
json_new_block = json.dumps(
new_block, indent=4, default=lambda o: o.__dict__, sort_keys=True)
print("Generate block complete")
print(" ")
end_time = time.time()
elapsed_time = end_time - start_time
print("Block Generate Time Time: %.8f seconds" % elapsed_time)
print(" ")
print("Transaction per second : ", 30 / elapsed_time)
print("")
file_controller.remove_all_transactions()
file_controller.remove_all_voting()
sender.send_to_all(json_new_block)
print("send block complete")
except TypeError as te:
print("@generate block", te)
