def mine(a):
func = inspect.currentframe().f_back.f_code
logging.info("Starting to mine")
# See if other blockchains exist
blockchain = consensus()
if not blockchain:
logging.info("Didn't receive a blockchain from anyone and need to make one")
# We didn't find one, need to make one
variables.BLOCKCHAIN.append(Utility.create_genesis_block())
else:
logging.info("Received a blockchain from the net")
# See if we got any blocks from someone, save it
variables.BLOCKCHAIN = blockchain
message = Utility.buildmessage("blockchain", variables.BLOCKCHAIN)
logging.debug("Adding {} to queue".format(message))
a.put(message)
url = "http://" + variables.MINER_NODE_URL + ":" + str(variables.PORT) + "/blocks?update=" + User.public_key
logging.debug("accessing url via GET")
requests.get(url)
logging.debug("Done accessing url")
while True:
last_block = variables.BLOCKCHAIN[len(variables.BLOCKCHAIN) - 1]
# -get transactions
url = "http://" + variables.MINER_NODE_URL + ":" + str(variables.PORT) + "/txion?update=" + User.public_key
logging.debug("Getting transactions from {}".format(url))
transactions = requests.get(url).content
logging.debug("Done getting transactions")
variables.PENDING_TRANSACTIONS = json.loads(transactions)
logging.warning("type of transaction: {}".format(type(variables.PENDING_TRANSACTIONS)))
variables.PENDING_TRANSACTIONS.append({
"from": "network",
"to": User.public_key,
"amount": 1.0})
# mine using the updated blockchain
pow, pow_output = proof_of_work(a, last_block, variables.PENDING_TRANSACTIONS)
variables.PENDING_TRANSACTIONS = []
if pow:
logging.info("Mined a block {}".format(pow_output))
variables.BLOCKCHAIN.append(pow_output)
else:
logging.info("Consensus returned a blockchain {}".format(pow_output))
variables.BLOCKCHAIN = pow_output
logging.debug("Adding that blockchain to the Queue")
a.put(["mine", variables.BLOCKCHAIN])
url = "http://" + variables.MINER_NODE_URL + ":" + str(variables.PORT) + "/blocks?update=" + User.public_key
logging.debug("accessing url via GET")
requests.get(url)
logging.debug("Done accessing url")
def get_blocks():
func = inspect.currentframe().f_back.f_code
ip = request.remote_addr
logging.info("/blocks accessed from {} via {}".format(ip, request.method))
if request.method == 'POST':
if str(ip) != "127.0.0.1" and ip not in variables.PEER_NODES:
logging.debug("We didn't know that IP, adding it to Q")
message = Utility.buildmessage("ip", ip)
logging.debug("message: {}".format(message))
q.put(message)
# Load current blockchain. Only you should update your blockchain
qfrom = "other"
if request.args.get("update") == User.public_key:
logging.debug("update was from our public, we updated our blockchain")
qget = q.get()
logging.debug("qget is {}".format(qget))
qfrom = qget[0]
variables.BLOCKCHAIN = qget[1]
logging.info("Done updating our blockchain")
return "200"
else:
chain_to_send = variables.BLOCKCHAIN
logging.debug("Chain to send:{}".format(chain_to_send))
logging.debug(
"request was not from us, we need to give them our blockchain")
# Converts our blocks into dictionaries so we can send them as json objects later
chain_to_send_json = []
for block in chain_to_send:
logging.debug("block to send TYPE:{} details:{}".format(
type(block), block))
try:
chain_to_send_json.append(block.exportjson())
except AttributeError:
logging.error("This is not a block {}".format(block))
# Send our chain to whomever requested it
chain_to_send = json.dumps(chain_to_send_json)
logging.debug("Sending {}".format(chain_to_send))
logging.info("Done sending out our blockchain")
return chain_to_send
