remove deprecated POW

master
Kevin 2020-06-19 00:55:37 -05:00
parent eeab5ef2c2
commit 5751468e8a
1 changed files with 0 additions and 94 deletions

View File

@ -72,97 +72,3 @@ def hashMeetsDifficulty(hexHash):
return hashDifficulty >= expected
class POW:
def __init__(self, metadata, data, threadCount = 1, minDifficulty=0):
self.foundHash = False
self.difficulty = 0
self.data = data
self.metadata = metadata
self.threadCount = threadCount
self.hashing = False
json_metadata = json.dumps(metadata).encode()
try:
self.data = self.data.encode()
except AttributeError:
pass
if minDifficulty > 0:
self.difficulty = minDifficulty
else:
# Calculate difficulty. Dumb for now, may use good algorithm in the future.
self.difficulty = getDifficultyForNewBlock(bytes(json_metadata + b'\n' + self.data))
logger.info('Computing POW (difficulty: %s)...' % (self.difficulty,))
self.mainHash = '0' * 64
self.puzzle = self.mainHash[0:min(self.difficulty, len(self.mainHash))]
for i in range(max(1, threadCount)):
t = threading.Thread(name = 'thread%s' % i, target = self.pow, args = (True,))
t.start()
def pow(self, reporting = False):
startTime = math.floor(time.time())
self.hashing = True
self.reporting = reporting
iFound = False # if current thread is the one that found the answer
nonce = BLOCK_NONCE_START_INT
while self.hashing:
self.metadata['pow'] = nonce
payload = json.dumps(self.metadata).encode() + b'\n' + self.data
token = hashers.sha3_hash(payload)
try:
# on some versions, token is bytes
token = token.decode()
except AttributeError:
pass
if self.puzzle == token[0:self.difficulty]:
self.hashing = False
iFound = True
self.result = payload
break
nonce += 1
if iFound:
endTime = math.floor(time.time())
if self.reporting:
logger.debug('Found token after %s seconds: %s' % (endTime - startTime, token), timestamp=True)
def shutdown(self):
self.hashing = False
self.puzzle = ''
def changeDifficulty(self, newDiff):
self.difficulty = newDiff
def getResult(self):
"""
Returns the result then sets to false, useful to automatically clear the result
"""
try:
retVal = self.result
except AttributeError:
retVal = False
self.result = False
return retVal
def waitForResult(self):
"""
Returns the result only when it has been found, False if not running and not found
"""
result = False
try:
while True:
result = self.getResult()
if not self.hashing:
break
else:
time.sleep(1)
except KeyboardInterrupt:
self.shutdown()
logger.warn('Got keyboard interrupt while waiting for POW result, stopping')
return result