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Switch.py
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Switch.py
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from copy import copy
from log import say_exception, say_line, say_quiet
from sha256 import hash, sha256, STATE
from struct import pack, unpack
from threading import RLock
from time import time, sleep
from util import Object, chunks, bytereverse, belowOrEquals, uint32
import StratumSource
import log
import socks
class Switch(object):
def __init__(self, options):
self.lock = RLock()
self.miners = []
self.options = options
self.last_work = 0
self.update_time = True
self.max_update_time = options.max_update_time
self.backup_server_index = 1
self.errors = 0
self.failback_attempt_count = 0
self.server_index = -1
self.last_server = None
self.server_map = {}
self.user_agent = 'poclbm/' + options.version
self.difficulty = 0
self.true_target = None
self.last_block = ''
self.sent = {}
if self.options.proxy:
self.options.proxy = self.parse_server(self.options.proxy, False)
self.parse_proxy(self.options.proxy)
self.servers = []
for server in self.options.servers:
try:
self.servers.append(self.parse_server(server))
except ValueError:
if self.options.verbose:
say_exception()
say_line("Ignored invalid server entry: %s", server)
continue
def parse_server(self, server, mailAsUser=True):
s = Object()
temp = server.split('://', 1)
if len(temp) == 1:
s.proto = ''; temp = temp[0]
else: s.proto = temp[0]; temp = temp[1]
if mailAsUser:
s.user, temp = temp.split(':', 1)
s.pwd, s.host = temp.split('@')
else:
temp = temp.split('@', 1)
if len(temp) == 1:
s.user = ''
s.pwd = ''
s.host = temp[0]
else:
if temp[0].find(':') <> -1:
s.user, s.pwd = temp[0].split(':')
else:
s.user = temp[0]
s.pwd = ''
s.host = temp[1]
if s.host.find('#') != -1:
s.host, s.name = s.host.split('#')
else: s.name = s.host
return s
def parse_proxy(self, proxy):
return
# proxy.port = 9050
# proxy.host = proxy.host.split(':')
# if len(proxy.host) > 1:
# proxy.port = int(proxy.host[1]); proxy.host = proxy.host[0]
#
# proxy.type = socks.PROXY_TYPE_SOCKS5
# if proxy.proto == 'http':
# proxy.type = socks.PROXY_TYPE_HTTP
# elif proxy.proto == 'socks4':
# proxy.type = socks.PROXY_TYPE_SOCKS4
def add_miner(self, miner):
self.miners.append(miner)
miner.switch = self
def updatable_miner(self):
for miner in self.miners:
if miner.update:
miner.update = False
return miner
def loop(self):
self.should_stop = False
self.set_server_index(0)
while True:
if self.should_stop: return
failback = self.server_source().loop()
sleep(1)
if failback:
say_line("Attempting to fail back to primary server")
self.last_server = self.server_index
self.set_server_index(0)
continue
if self.last_server:
self.failback_attempt_count += 1
self.set_server_index(self.last_server)
say_line('Still unable to reconnect to primary server (attempt %s), failing over', self.failback_attempt_count)
self.last_server = None
continue
self.errors += 1
say_line('IO errors - %s, tolerance %s', (self.errors, self.options.tolerance))
if self.errors > self.options.tolerance:
self.errors = 0
if self.backup_server_index >= len(self.servers):
say_line("No more backup servers left. Using primary and starting over.")
new_server_index = 0
self.backup_server_index = 1
else:
new_server_index = self.backup_server_index
self.backup_server_index += 1
self.set_server_index(new_server_index)
def connection_ok(self):
self.errors = 0
if self.server_index == 0:
self.backup_server_index = 1
self.failback_attempt_count = 0
def stop(self):
self.should_stop = True
if self.server_index != -1:
self.server_source().stop()
#callers must provide hex encoded block header and target
def decode(self, server, block_header, target, job_id = None, extranonce2 = None):
if block_header:
job = Object()
binary_data = block_header.decode('hex')
data0 = list(unpack('<16I', binary_data[:64])) + ([0] * 48)
job.target = unpack('<8I', target.decode('hex'))
job.header = binary_data[:68]
job.merkle_end = uint32(unpack('<I', binary_data[64:68])[0])
job.time = uint32(unpack('<I', binary_data[68:72])[0])
job.difficulty = uint32(unpack('<I', binary_data[72:76])[0])
job.state = sha256(STATE, data0)
job.targetQ = 2**256 / int(''.join(list(chunks(target, 2))[::-1]), 16)
job.job_id = job_id
job.extranonce2 = extranonce2
job.server = server
if job.difficulty != self.difficulty:
self.set_difficulty(job.difficulty)
return job
def set_difficulty(self, difficulty):
self.difficulty = difficulty
bits = '%08x' % bytereverse(difficulty)
true_target = '%064x' % (int(bits[2:], 16) * 2 ** (8 * (int(bits[:2], 16) - 3)),)
true_target = ''.join(list(chunks(true_target, 2))[::-1])
self.true_target = unpack('<8I', true_target.decode('hex'))
def send(self, result, send_callback):
for nonce in result.miner.nonce_generator(result.nonces):
h = hash(result.state, result.merkle_end, result.time, result.difficulty, nonce)
if h[7] != 0:
hash6 = pack('<I', long(h[6])).encode('hex')
say_line('Verification failed, check hardware! (%s, %s)', (result.miner.id(), hash6))
return True # consume this particular result
else:
self.diff1_found(bytereverse(h[6]), result.target[6])
if belowOrEquals(h[:7], result.target[:7]):
is_block = belowOrEquals(h[:7], self.true_target[:7])
hash6 = pack('<I', long(h[6])).encode('hex')
hash5 = pack('<I', long(h[5])).encode('hex')
self.sent[nonce] = (is_block, hash6, hash5)
if not send_callback(result, nonce):
return False
return True
def diff1_found(self, hash_, target):
if self.options.verbose and target < 0xFFFF0000L:
say_line('checking %s <= %s', (hash_, target))
def status_updated(self, miner):
verbose = self.options.verbose
rate = miner.rate if verbose else sum([m.rate for m in self.miners])
estimated_rate = miner.estimated_rate if verbose else sum([m.estimated_rate for m in self.miners])
rejected_shares = miner.share_count[0] if verbose else sum([m.share_count[0] for m in self.miners])
total_shares = rejected_shares + miner.share_count[1] if verbose else sum([m.share_count[1] for m in self.miners])
total_shares_estimator = max(total_shares, 1)
say_quiet('%s[%.03f MH/s (~%d MH/s)] [Rej: %d/%d (%.02f%%)]', (miner.id()+' ' if verbose else '', rate, round(estimated_rate), rejected_shares, total_shares, float(rejected_shares) * 100 / total_shares_estimator))
def report(self, miner, nonce, accepted):
is_block, hash6, hash5 = self.sent[nonce]
miner.share_count[1 if accepted else 0] += 1
hash_ = hash6 + hash5 if is_block else hash6
if self.options.verbose or is_block:
say_line('%s %s%s, %s', (miner.id(), 'block ' if is_block else '', hash_, 'accepted' if accepted else '_rejected_'))
del self.sent[nonce]
def set_server_index(self, server_index):
self.server_index = server_index
user = self.servers[server_index].user
name = self.servers[server_index].name
#say_line('Setting server %s (%s @ %s)', (name, user, host))
say_line('Setting server (%s @ %s)', (user, name))
log.server = name
def add_servers(self, hosts):
for host in hosts[::-1]:
port = str(host['port'])
if not self.has_server(self.server().user, host['host'], port):
server = copy(self.server())
server.host = ''.join([host['host'], ':', port])
server.source = None
self.servers.insert(self.backup_server_index, server)
def has_server(self, user, host, port):
for server in self.servers:
server_host, server_port = self.server().host.split(':', 1)
if server.user == user and server_host == host and server_port == port:
return True
return False
def queue_work(self, server, block_header, target = None, job_id = None, extranonce2 = None, miner=None):
work = self.decode(server, block_header, target, job_id, extranonce2)
with self.lock:
if not miner:
miner = self.miners[0]
for i in xrange(1, len(self.miners)):
self.miners[i].update = True
miner.work_queue.put(work)
if work:
miner.update = False; self.last_work = time()
if self.last_block != work.header[25:29]:
self.last_block = work.header[25:29]
self.clear_result_queue(server)
def clear_result_queue(self, server):
while not server.result_queue.empty():
server.result_queue.get(False)
def server_source(self):
if not hasattr(self.server(), 'source'):
if self.server().proto == 'http':
import GetworkSource
getwork_source = GetworkSource.GetworkSource(self)
say_line('checking for stratum...')
stratum_host = getwork_source.detect_stratum()
if stratum_host:
getwork_source.close_connection()
self.server().proto = 'stratum'
self.server().host = stratum_host
self.add_stratum_source()
else:
self.server().source = getwork_source
else:
self.add_stratum_source()
return self.server().source
def add_stratum_source(self):
if self.options.stratum_proxies:
stratum_proxy = StratumSource.detect_stratum_proxy(self.server().host)
if stratum_proxy:
original_server = copy(self.server())
original_server.source = StratumSource.StratumSource(self)
self.servers.insert(self.backup_server_index, original_server)
self.server().host = stratum_proxy
self.server().name += '(p)'
log.server = self.server().name
else:
say_line('No proxy found')
self.server().source = StratumSource.StratumSource(self)
def server(self):
return self.servers[self.server_index]
def put(self, result):
result.server.result_queue.put(result)