def mining():
print("Into the mining process")
# Initializing Election Class
elec = Election()
# Do not make a block if mempool is empty
# if elec.redis_client.llen("mempool") == 0:
# print("No block made! Mempool is empty!")
# return
# Transaction verification
# Initializing Block Class
blk = Block()
# Create Coinbase Transaction
blk.create_coinbase_transaction()
# Connect to Previous Block
blk.add_previous_block()
# Scan Mempool
vd = True
for i in range(0, elec.redis_client.llen("mempool")):
# Get Transaction
tx = elec.redis_client.lindex('mempool', i).decode('utf-8')
if tx == None:
# Exit if tx is None
break
# Get tx verification verdict
# verify_verdict = elec.verification.verify_tx(tx)
# if verify_verdict == "verified":
# # Sending data to block
# blk.add_transaction(tx)
# else:
# vd = False
# print("Some Transaction Verification Failed! Aborting Mining ...")
# break
# If Tx Verification Fails
if vd == False:
print("Mining Aborted!")
return
# create block
blk.compute_hash()
blk.calculate_merkle_root()
block = blk
# add block
blkChain = BlockChain()
blkChain.add_block(block)
print("Block added to this Node's blockchain!")
# check
# full Blockchain verify
# full_verify_message = elec.verification.full_chain_verify()
# if msg != "verified":
# return sync.chainsync()
# if full_verify_message == "verified":
# braodcast the block you made
print("Broadcasting block made by this node ...")
udphandler = UDPHandler()
udphandler.sendblock(block.to_json())
def create_block(self):
block = Block()
block.create_coinbase_transaction()
mempool = Mempool()
blkc = BlockChain()
mempool_size = mempool.get_len()
if mempool_size == 0:
return
while mempool_size > 0:
tx = mempool.get_transaction()
block.add_transaction(tx)
mempool_size -= 1
block.calcalute_block_size()
block.calculate_merkle_root()
block.compute_hash()
blkc.add_block(block)
return block
def test_merkle_root(self):
block = Block()
tx = Transaction()
input = TransactionInput()
input.address = "test_address"
tx.add_input(input)
tx.generate_hash()
block.add_transaction(tx)
block.calculate_merkle_root()
initial_merkle_root = block.merkle_root
tx1 = Transaction()
input1 = TransactionInput()
input1.address = "another_test_address"
tx1.add_input(input1)
tx1.generate_hash()
block.add_transaction(tx1)
block.calculate_merkle_root()
final_merkle_root = block.merkle_root
self.assertNotEqual(initial_merkle_root, final_merkle_root)
def test_txs_by_address(self):
blockchain = BlockChain()
blockchain.flush_chain()
block = Block()
tx = Transaction()
input1 = TransactionInput()
input1.address = "test_address"
tx.add_input(input1)
tx.generate_hash()
block.add_transaction(tx)
tx1 = Transaction()
output = TransactionOutput()
output.address = "fake_address"
output1 = TransactionOutput()
output1.address = "test_address"
tx1.add_output(output)
tx1.add_output(output1)
tx1.generate_hash()
block.add_transaction(tx1)
tx2 = Transaction()
output2 = TransactionOutput()
output2.address = "fake_address"
tx2.add_output(output2)
tx2.generate_hash()
block.add_transaction(tx2)
block.compute_hash()
blockchain.add_block(block)
txs = blockchain.get_txs_by_addr("test_address")
getb = blockchain.get_block(-1)
print(getb.to_json())
for tx in txs:
print(tx.hash, end='\n')
# self.assertEqual(len(txs), 2)
print(len(txs))
blockchain.close()
from trucoin.Block import Block
from trucoin.Transaction import Transaction
from trucoin.TransactionInput import TransactionInput
from trucoin.TransactionOutput import TransactionOutput
import time
import sys
from utils import getsize, getbytes
output = TransactionOutput()
output.address = "1d3f347aada53547142da8edea5e0019e6ef31bb15"
output.n = 0
output.value = 50
transaction = Transaction()
transaction.add_output(output)
transaction.is_coinbase = True
transaction.hash = "eef9fda50a6bf6c11c5078d8772d94jk"
block = Block()
block.add_transaction(transaction)
block.calculate_merkle_root()
block.compute_hash()
block.miner = "1d3f347aada53547142da8edea5e0019e6ef31bb15jk"
block.size = getbytes(block)
print(block.__dict__)
message = {
"hash": block.hash,
"timestamp": block.timestamp,
"transaction": block.transactions[0].broadcast_transaction(),
"previous_block_hash": block.previous_block_hash,
"merkle_root": block.merkle_root,
"height": block.height,
"miner": block.miner,
"version": block.version,
def __init__(self):
blockchain = BlockChain()
self.block = Block()
self.redis_client = redis.Redis(host='localhost', port=6379, db=0)
self.chain_length = self.redis_client.llen('chain')