def genesis_block(self):
new_block = block.Block(reward=self.reward)
if new_block.error == True:
return False
new_block.mine(self.target)
self.chain.append(new_block)
pp.add_data(self, 'blockchain.pickle')
return True
def mine(self, prev_hash):
self.height += 1
new_block = block.Block(reward=self.reward,
previous_hash=prev_hash,
height=self.height)
new_block.mine(self.target)
self.chain.insert(0, new_block)
config.broadcast_to_friend(new_block, '/block/new')
pp.add_data(self, 'blockchain.pickle')
if len(self.chain) % 5 == 0:
self.reCalcDiff()
if (len(self.chain) % 10 == 0):
self.reward /= 2
def del_from_pool(tx): #deserialiazed transaction
utxo_set = pp.get_data('utxo.pickle')
if utxo_set == False:
print("Empty utxo pool!!")
return
new_pool = []
for elem in tx['inputs']:
address = get_address(elem['ScriptSig'])
for utxo in utxo_set:
if utxo['address'] != address:
new_pool.append(utxo)
else:
new_data = []
for unspent in utxo['unspent_outputs']:
if unspent['tx_hash_big_endian'] != elem[
'TXID'] and unspent['tx_output_n'] != elem['VOUT']:
new_data.append(unspent)
utxo['unspent_outputs'] = new_data
new_pool.append(utxo)
pp.add_data(new_pool, 'utxo.pickle')
def consensus():
nodes = pp.read_nodes_from_file("node")
len_list = []
dicti = {}
for x in nodes:
dicti = {}
dicti["ip"] = x
try:
dicti["length"] = int(requests.get("http://" + x + "/chain/length").text)
except:
dicti["length"] = 0
len_list.append(dicti)
newlist = sorted(len_list, key=lambda k: k['length'])
if (newlist[-1]['ip'] != nodes[0]):
req = requests.get("http://" + newlist[-1]['ip'] + "/chain")
chain = req.text
req = requests.get("http://" + newlist[-1]['ip'] + "/utxo")
utxo = req.text
pp.add_data(chain, 'blockchain.pickle')
pp.add_data(utxo, 'utxo.pickle')
def add_output(tx_output, n, tx_hash):
#####
new_data = {
'tx_hash_big_endian': tx_hash,
'tx_output_n': n,
'script': tx_output['SPK'],
'value': tx_output['Value']
}
ready_data = {
'address':
tx_output['address'],
'unspent_outputs': [{
'tx_hash_big_endian': tx_hash,
'tx_output_n': n,
'script': tx_output['SPK'],
'value': tx_output['Value']
}]
}
#####
i = 0
utxo_set = pp.get_data('utxo.pickle')
print("Utxo in add_output ", utxo_set)
if type(utxo_set) is bytes:
utx = []
for utxo in utxo_set:
if type(utxo) is not int:
utx.append(utxo)
utxo_set = utx
if utxo_set == False:
utxo_set = []
else:
for elem in utxo_set:
if (elem['address'] == tx_output['address']):
i = 1
elem['unspent_outputs'].append(new_data)
if i == 0:
utxo_set.append(ready_data)
pp.add_data(utxo_set, 'utxo.pickle')
def add_output(tx_output, n, tx_hash):
#####
new_data = {
'tx_hash_big_endian': tx_hash,
'tx_output_n': n,
'script': tx_output['SPK'],
'value': tx_output['Value']
}
ready_data = {
'address':
tx_output['address'],
'unspent_outputs': [{
'tx_hash_big_endian': tx_hash,
'tx_output_n': n,
'script': tx_output['SPK'],
'value': tx_output['Value']
}]
}
#####
i = 0
utxo_set = pp.get_data('utxo.pickle')
# if type(utxo_set) is str:
# utxo_set = literal_eval(utxo_set)
if utxo_set == False:
utxo_set = []
else:
# lens = len(utxo_set) ЗАЧЕМ????
for elem in utxo_set:
if (elem['address'] == tx_output['address']):
i = 1
elem['unspent_outputs'].append(new_data)
if i == 0:
utxo_set.append(ready_data)
pp.add_data(utxo_set, 'utxo.pickle')
def genesis_block(self):
new_block = block.Block(reward=self.reward)
new_block.mine(self.target)
self.chain.append(new_block)
pp.add_data(self, 'blockchain.pickle')