def loadBlockchainInMemoryFromJSON(self, bchain, length):
"""
Loads blockchain JSON into blockchain data strucutre in memory
:return: blockchain list
"""
idx = 0
bchainList = []
while length > idx:
block = bchain[idx]
prevBlockHash = block["block"]["previousBlockHash"]
blocknumber = int(block["block"]["blocknumber"])
proof = int(block["block"]["proof"])
timestamp = float(block["block"]["timestamp"])
transactions = block["block"]["transactions"]
tranLen = len(transactions)
tranListObj = []
for i in range(0, tranLen):
trx = transactions[i]["transactiondetail"]
trxMsg = trx["message"]
trxQ = int(trx["quantity"])
trxRec = trx["recipient"]
trxSender = trx["sender"]
trxObj = Transaction(trxSender, trxRec, trxQ, trxMsg)
tranListObj.append(trxObj.getTransactionData())
block = Block(blocknumber, timestamp, tranListObj, prevBlockHash,
proof)
bchainList.append(block)
idx = idx + 1
return bchainList
def initiateGenesisBlock(self):
genesisTransaction = Transaction("demosender", "demoreciever", 0,
"genesis")
genesisBlock = Block(
1, 1526100000.50, [genesisTransaction.getTransactionData()],
"e86cf0c857ac5554b16gkc1751c80da0za5c48d9e47463bd0f71f26438fd32fe",
161616)
self.blockchain.append(genesisBlock)
def addUnconfirmedTransaction(self, senderAddress, recieverAddress,
quantity, message):
"""
Creates a new transaction to go into the next mined Block
:param senderAddress: Address of the Sender
:param recieverAddress: Address of the Recipient
:param quantity: quantity to get exchanged from sender to reciever
:return: The index of the Future Block which will hold this transaction
"""
transaction = Transaction(senderAddress, recieverAddress,
int(quantity), message)
self.unConfirmedTransactionList.append(
transaction.getTransactionData())
#Future block index = length of blockchain + 1
return len(self.blockchain) + 1
def addTransactionInConfirmedBlock(self, senderAddress, recieverAddress,
quantity, message, blocknumber):
"""
Creates a new transaction to go into the next mined Block
:param senderAddress: Address of the Sender
:param recieverAddress: Address of the Recipient
:param quantity: quantity to get exchanged from sender to reciever
:param message: message in text
:blocknumber: block in which new transaction is going to be added
:return: True
"""
transaction = Transaction(senderAddress, recieverAddress,
int(quantity), message)
listt = self.blockchain[blocknumber - 1].transactionList
listt.append(transaction.getTransactionData())
self.blockchain[blocknumber - 1].transactionList = listt
return True
