def nbc(request, seller_id, notification):
# from, to, product id, product title
data = {}
noti = notification.split('-')
buyer_id = noti[0]
p_id = noti[-1]
data["from"] = seller_id
data["to"] = buyer_id
data["product"] = p_id
last_ledger = ledger[-1]
new_block = next_block(last_ledger)
new_block.data = data
new_block.hash = new_block.hash_block()
not1 = Notification.objects.filter(notification=notification)
not1.delete()
log = BlockChain()
log.log = new_block.data
log.save()
# ledger.append(new_block)
# new_ledger = []
# for x in ledger:
# new_ledger.append(x.data)
# json_list = new_ledger
x = JsonResponse(log.log, safe=False)
return redirect('/home')
def process_transaction():
global lock
global node
while len(transactions) > 0:
t = transactions.pop()
if t.forwarder == node.fingerprint:
own_transactions.append(t)
else:
if not lock.locked():
previous_block = temporary_quartz[-1]
candidate = blockchain.next_block(previous_block)
print("POW incoming!")
candidate.proof_of_work(t, node.fingerprint)
if not lock.locked():
print("POW done!")
print(candidate.overview())
advertise_block(candidate)
lock.acquire()
quartz.append(candidate)
temporary_quartz.append(candidate)
lock.release()
else:
print("Scheduling transaction!")
transaction.append(t)
else:
transactions.append(t)
def broadcast():
while True:
if (LEADER) and (gui.ballotQueue.empty() != True):
index = len(blockchain.chain)
queuedData = gui.ballotQueue.get_nowait()
blockToAdd = blockchain.next_block(MACHINE_ID, queuedData)
if (blockToAdd.previous_hash == blockchain.chain[index - 1].hash):
blockchain.append_block(blockToAdd)
saveBlockchain(blockchain.chain, 'localBlockchain.pk1')
message = (str)(blockToAdd.machine_id) + '%' + (str)(
blockToAdd.timestamp) + '%' + (str)(blockToAdd.data) + '%' + (
str)(blockToAdd.hash) + '%' + (str)(
blockToAdd.previous_hash)
outgoing_command_handler('ADDB', message)
#sample machine ID
machine_id = '1234'
block_to_add = None
#Machine will receive genesis_block from server so that all machines have the same genesis block
#In that case genesis_block = whatver server gives it
genesis_block = blockchain.create_genesis_block()
#machine will then create its own local blockchain utilitzing the genesis block given
blockchain.create_new_chain(genesis_block)
# Voter will vote and data will be packaged into proposed block
proposed_data = [["Voter ID", "000001"], ["President", "Eric Schweitzer"],
["Senate", "Eric Schweitzer"], ["Mayor", "Eric Schweitzer"]]
block_to_add = blockchain.next_block(machine_id, proposed_data)
blockchain.chain.append(block_to_add)
print("First Block")
print("Machine ID: ", blockchain.chain[1].machine_id)
print("Time: ", blockchain.chain[1].timestamp)
print("Ballot: ", blockchain.chain[1].data)
print("Current Hash: ", blockchain.chain[1].hash)
print("Previous Hash: ", blockchain.chain[1].previous_hash, "\n")
message = str(block_to_add.machine_id) + '?' + str(block_to_add.timestamp) \
+ '?' + str(block_to_add.data) + '?' + str(block_to_add.hash) + '?' + str(block_to_add.previous_hash)
#print(message)
message = message.split("?")
import blockchain as bc
import block
if __name__ == "__main__":
bc = bc.Blockchain()
bc.create_genesis_block()
bc.next_block(block.Data('a', 'b', 'c'))
bc.next_block(block.Data('z', 'a', 'x'))
# print(bc.get_last_block().hash)
c = bc.next_block(block.Data('k', 'f', 'g'))
print(bc.get_block('2').hash)
print(bc.get_relate_blocks('a'))
pass