1 from __future__ import division
8 from twisted.internet import defer
9 from twisted.python import log
11 import bitcoin.getwork as bitcoin_getwork, bitcoin.data as bitcoin_data
12 from bitcoin import helper, script, worker_interface
13 from util import forest, jsonrpc, variable, deferral, math, pack
14 import p2pool, p2pool.data as p2pool_data
16 class WorkerBridge(worker_interface.WorkerBridge):
17 def __init__(self, node, my_pubkey_hash, donation_percentage, merged_urls, worker_fee):
18 worker_interface.WorkerBridge.__init__(self)
19 self.recent_shares_ts_work = []
22 self.my_pubkey_hash = my_pubkey_hash
23 self.donation_percentage = donation_percentage
24 self.worker_fee = worker_fee
26 self.pseudoshare_received = variable.Event()
27 self.share_received = variable.Event()
28 self.local_rate_monitor = math.RateMonitor(10*60)
30 self.removed_unstales_var = variable.Variable((0, 0, 0))
31 self.removed_doa_unstales_var = variable.Variable(0)
34 self.my_share_hashes = set()
35 self.my_doa_share_hashes = set()
37 self.tracker_view = forest.TrackerView(self.node.tracker, forest.get_attributedelta_type(dict(forest.AttributeDelta.attrs,
38 my_count=lambda share: 1 if share.hash in self.my_share_hashes else 0,
39 my_doa_count=lambda share: 1 if share.hash in self.my_doa_share_hashes else 0,
40 my_orphan_announce_count=lambda share: 1 if share.hash in self.my_share_hashes and share.share_data['stale_info'] == 'orphan' else 0,
41 my_dead_announce_count=lambda share: 1 if share.hash in self.my_share_hashes and share.share_data['stale_info'] == 'doa' else 0,
44 @self.node.tracker.verified.removed.watch
46 if share.hash in self.my_share_hashes and self.node.tracker.is_child_of(share.hash, self.node.best_share_var.value):
47 assert share.share_data['stale_info'] in [None, 'orphan', 'doa'] # we made these shares in this instance
48 self.removed_unstales_var.set((
49 self.removed_unstales_var.value[0] + 1,
50 self.removed_unstales_var.value[1] + (1 if share.share_data['stale_info'] == 'orphan' else 0),
51 self.removed_unstales_var.value[2] + (1 if share.share_data['stale_info'] == 'doa' else 0),
53 if share.hash in self.my_doa_share_hashes and self.node.tracker.is_child_of(share.hash, self.node.best_share_var.value):
54 self.removed_doa_unstales_var.set(self.removed_doa_unstales_var.value + 1)
58 self.merged_work = variable.Variable({})
60 @defer.inlineCallbacks
61 def set_merged_work(merged_url, merged_userpass):
62 merged_proxy = jsonrpc.Proxy(merged_url, dict(Authorization='Basic ' + base64.b64encode(merged_userpass)))
64 auxblock = yield deferral.retry('Error while calling merged getauxblock:', 30)(merged_proxy.rpc_getauxblock)()
65 self.merged_work.set(dict(self.merged_work.value, **{auxblock['chainid']: dict(
66 hash=int(auxblock['hash'], 16),
67 target='p2pool' if auxblock['target'] == 'p2pool' else pack.IntType(256).unpack(auxblock['target'].decode('hex')),
68 merged_proxy=merged_proxy,
70 yield deferral.sleep(1)
71 for merged_url, merged_userpass in merged_urls:
72 set_merged_work(merged_url, merged_userpass)
74 @self.merged_work.changed.watch
75 def _(new_merged_work):
76 print 'Got new merged mining work!'
80 self.current_work = variable.Variable(None)
82 t = self.node.bitcoind_work.value
83 bb = self.node.best_block_header.value
84 if bb is not None and bb['previous_block'] == t['previous_block'] and self.node.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(bb)) <= t['bits'].target:
85 print 'Skipping from block %x to block %x!' % (bb['previous_block'],
86 bitcoin_data.hash256(bitcoin_data.block_header_type.pack(bb)))
88 version=bb['version'],
89 previous_block=bitcoin_data.hash256(bitcoin_data.block_header_type.pack(bb)),
90 bits=bb['bits'], # not always true
92 height=t['height'] + 1,
93 time=bb['timestamp'] + 600, # better way?
95 merkle_link=bitcoin_data.calculate_merkle_link([None], 0),
96 subsidy=self.node.net.PARENT.SUBSIDY_FUNC(self.node.bitcoind_work.value['height']),
97 last_update=self.node.bitcoind_work.value['last_update'],
100 self.current_work.set(t)
101 self.node.bitcoind_work.changed.watch(lambda _: compute_work())
102 self.node.best_block_header.changed.watch(lambda _: compute_work())
105 self.new_work_event = variable.Event()
106 @self.current_work.transitioned.watch
107 def _(before, after):
108 # trigger LP if version/previous_block/bits changed or transactions changed from nothing
109 if any(before[x] != after[x] for x in ['version', 'previous_block', 'bits']) or (not before['transactions'] and after['transactions']):
110 self.new_work_event.happened()
111 self.merged_work.changed.watch(lambda _: self.new_work_event.happened())
112 self.node.best_share_var.changed.watch(lambda _: self.new_work_event.happened())
114 def get_stale_counts(self):
115 '''Returns (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain)'''
116 my_shares = len(self.my_share_hashes)
117 my_doa_shares = len(self.my_doa_share_hashes)
118 delta = self.tracker_view.get_delta_to_last(self.node.best_share_var.value)
119 my_shares_in_chain = delta.my_count + self.removed_unstales_var.value[0]
120 my_doa_shares_in_chain = delta.my_doa_count + self.removed_doa_unstales_var.value
121 orphans_recorded_in_chain = delta.my_orphan_announce_count + self.removed_unstales_var.value[1]
122 doas_recorded_in_chain = delta.my_dead_announce_count + self.removed_unstales_var.value[2]
124 my_shares_not_in_chain = my_shares - my_shares_in_chain
125 my_doa_shares_not_in_chain = my_doa_shares - my_doa_shares_in_chain
127 return (my_shares_not_in_chain - my_doa_shares_not_in_chain, my_doa_shares_not_in_chain), my_shares, (orphans_recorded_in_chain, doas_recorded_in_chain)
129 def get_user_details(self, request):
130 user = request.getUser() if request.getUser() is not None else ''
132 desired_pseudoshare_target = None
134 user, desired_pseudoshare_difficulty_str = user.rsplit('+', 1)
136 desired_pseudoshare_target = bitcoin_data.difficulty_to_target(float(desired_pseudoshare_difficulty_str))
140 desired_share_target = 2**256 - 1
142 user, min_diff_str = user.rsplit('/', 1)
144 desired_share_target = bitcoin_data.difficulty_to_target(float(min_diff_str))
148 if random.uniform(0, 100) < self.worker_fee:
149 pubkey_hash = self.my_pubkey_hash
152 pubkey_hash = bitcoin_data.address_to_pubkey_hash(user, self.node.net.PARENT)
154 pubkey_hash = self.my_pubkey_hash
156 return user, pubkey_hash, desired_share_target, desired_pseudoshare_target
158 def preprocess_request(self, request):
159 user, pubkey_hash, desired_share_target, desired_pseudoshare_target = self.get_user_details(request)
160 return pubkey_hash, desired_share_target, desired_pseudoshare_target
162 def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
163 if len(self.node.p2p_node.peers) == 0 and self.node.net.PERSIST:
164 raise jsonrpc.Error_for_code(-12345)(u'p2pool is not connected to any peers')
165 if self.node.best_share_var.value is None and self.node.net.PERSIST:
166 raise jsonrpc.Error_for_code(-12345)(u'p2pool is downloading shares')
167 if time.time() > self.current_work.value['last_update'] + 60:
168 raise jsonrpc.Error_for_code(-12345)(u'lost contact with bitcoind')
170 if self.merged_work.value:
171 tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
172 mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
173 mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
174 merkle_root=bitcoin_data.merkle_hash(mm_hashes),
178 mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in self.merged_work.value.iteritems()]
183 tx_hashes = [bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in self.current_work.value['transactions']]
184 tx_map = dict(zip(tx_hashes, self.current_work.value['transactions']))
186 share_type = p2pool_data.NewShare
187 if self.node.best_share_var.value is not None:
188 previous_share = self.node.tracker.items[self.node.best_share_var.value]
189 if isinstance(previous_share, p2pool_data.Share):
190 # Share -> NewShare only valid if 85% of hashes in [net.CHAIN_LENGTH*9//10, net.CHAIN_LENGTH] for new version
191 if self.node.tracker.get_height(previous_share.hash) < self.node.net.CHAIN_LENGTH:
192 share_type = p2pool_data.Share
193 elif time.time() < 1351383661 and self.node.net.NAME == 'bitcoin':
194 share_type = p2pool_data.Share
196 counts = p2pool_data.get_desired_version_counts(self.node.tracker,
197 self.node.tracker.get_nth_parent_hash(previous_share.hash, self.node.net.CHAIN_LENGTH*9//10), self.node.net.CHAIN_LENGTH//10)
198 if counts.get(p2pool_data.NewShare.VERSION, 0) < sum(counts.itervalues())*95//100:
199 share_type = p2pool_data.Share
202 share_info, gentx, other_transaction_hashes, get_share = share_type.generate_transaction(
203 tracker=self.node.tracker,
205 previous_share_hash=self.node.best_share_var.value,
206 coinbase=(script.create_push_script([
207 self.current_work.value['height'],
208 ] + ([mm_data] if mm_data else []) + [
209 ]) + self.current_work.value['coinbaseflags'])[:100],
210 nonce=random.randrange(2**32),
211 pubkey_hash=pubkey_hash,
212 subsidy=self.current_work.value['subsidy'],
213 donation=math.perfect_round(65535*self.donation_percentage/100),
214 stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
215 'orphan' if orphans > orphans_recorded_in_chain else
216 'doa' if doas > doas_recorded_in_chain else
218 )(*self.get_stale_counts()),
219 desired_version=p2pool_data.NewShare.VERSION,
221 block_target=self.current_work.value['bits'].target,
222 desired_timestamp=int(time.time() + 0.5),
223 desired_target=desired_share_target,
224 ref_merkle_link=dict(branch=[], index=0),
225 desired_other_transaction_hashes=tx_hashes,
230 transactions = [gentx] + [tx_map[tx_hash] for tx_hash in other_transaction_hashes]
232 mm_later = [(dict(aux_work, target=aux_work['target'] if aux_work['target'] != 'p2pool' else share_info['bits'].target), index, hashes) for aux_work, index, hashes in mm_later]
234 if desired_pseudoshare_target is None:
236 if len(self.recent_shares_ts_work) == 50:
237 hash_rate = sum(work for ts, work in self.recent_shares_ts_work[1:])//(self.recent_shares_ts_work[-1][0] - self.recent_shares_ts_work[0][0])
239 target = min(target, int(2**256/hash_rate))
241 target = desired_pseudoshare_target
242 target = max(target, share_info['bits'].target)
243 for aux_work, index, hashes in mm_later:
244 target = max(target, aux_work['target'])
245 target = math.clip(target, self.node.net.PARENT.SANE_TARGET_RANGE)
247 getwork_time = time.time()
248 lp_count = self.new_work_event.times
249 merkle_link = bitcoin_data.calculate_merkle_link([bitcoin_data.hash256(bitcoin_data.tx_type.pack(tx)) for tx in transactions], 0)
251 print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
252 bitcoin_data.target_to_difficulty(target),
253 bitcoin_data.target_to_difficulty(share_info['bits'].target),
254 self.current_work.value['subsidy']*1e-8, self.node.net.PARENT.SYMBOL,
255 len(self.current_work.value['transactions']),
258 ba = bitcoin_getwork.BlockAttempt(
259 version=min(self.current_work.value['version'], 2),
260 previous_block=self.current_work.value['previous_block'],
261 merkle_root=bitcoin_data.check_merkle_link(bitcoin_data.hash256(bitcoin_data.tx_type.pack(transactions[0])), merkle_link),
262 timestamp=self.current_work.value['time'],
263 bits=self.current_work.value['bits'],
267 received_header_hashes = set()
269 def got_response(header, request):
270 header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
271 pow_hash = self.node.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
273 if pow_hash <= header['bits'].target or p2pool.DEBUG:
274 helper.submit_block(dict(header=header, txs=transactions), False, self.node.factory, self.node.bitcoind, self.node.bitcoind_work, self.node.net)
275 if pow_hash <= header['bits'].target:
277 print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (self.node.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
280 log.err(None, 'Error while processing potential block:')
282 user, _, _, _ = self.get_user_details(request)
283 assert header['previous_block'] == ba.previous_block
284 assert header['merkle_root'] == ba.merkle_root
285 assert header['bits'] == ba.bits
287 on_time = self.new_work_event.times == lp_count
289 for aux_work, index, hashes in mm_later:
291 if pow_hash <= aux_work['target'] or p2pool.DEBUG:
292 df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
293 pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
294 bitcoin_data.aux_pow_type.pack(dict(
297 block_hash=header_hash,
298 merkle_link=merkle_link,
300 merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
301 parent_block_header=header,
305 def _(result, aux_work=aux_work):
306 if result != (pow_hash <= aux_work['target']):
307 print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
309 print 'Merged block submittal result: %s' % (result,)
312 log.err(err, 'Error submitting merged block:')
314 log.err(None, 'Error while processing merged mining POW:')
316 if pow_hash <= share_info['bits'].target and header_hash not in received_header_hashes:
317 share = get_share(header, transactions)
319 print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
321 p2pool_data.format_hash(share.hash),
322 p2pool_data.format_hash(share.previous_hash),
323 time.time() - getwork_time,
324 ' DEAD ON ARRIVAL' if not on_time else '',
326 self.my_share_hashes.add(share.hash)
328 self.my_doa_share_hashes.add(share.hash)
330 self.node.tracker.add(share)
332 self.node.tracker.verified.add(share)
333 self.node.set_best_share()
336 if pow_hash <= header['bits'].target or p2pool.DEBUG:
337 self.node.p2p_node.broadcast_share(share.hash)
339 log.err(None, 'Error forwarding block solution:')
341 self.share_received.happened(bitcoin_data.target_to_average_attempts(share.target), not on_time)
343 if pow_hash > target:
344 print 'Worker %s submitted share with hash > target:' % (request.getUser(),)
345 print ' Hash: %56x' % (pow_hash,)
346 print ' Target: %56x' % (target,)
347 elif header_hash in received_header_hashes:
348 print >>sys.stderr, 'Worker %s @ %s submitted share more than once!' % (request.getUser(), request.getClientIP())
350 received_header_hashes.add(header_hash)
352 self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
353 self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
354 while len(self.recent_shares_ts_work) > 50:
355 self.recent_shares_ts_work.pop(0)
356 self.local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=user))
360 return ba, got_response