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 worker_interface
13 from util import jsonrpc, variable, deferral, math, pack
14 import p2pool, p2pool.data as p2pool_data
16 class WorkerBridge(worker_interface.WorkerBridge):
17 def __init__(self, my_pubkey_hash, net, donation_percentage, bitcoind_work, best_block_header, merged_urls, best_share_var, tracker, my_share_hashes, my_doa_share_hashes, worker_fee, p2p_node, submit_block, set_best_share, shared_share_hashes, block_height_var):
18 worker_interface.WorkerBridge.__init__(self)
19 self.recent_shares_ts_work = []
21 self.my_pubkey_hash = my_pubkey_hash
23 self.donation_percentage = donation_percentage
24 self.bitcoind_work = bitcoind_work
25 self.best_block_header = best_block_header
26 self.best_share_var = best_share_var
27 self.tracker = tracker
28 self.my_share_hashes = my_share_hashes
29 self.my_doa_share_hashes = my_doa_share_hashes
30 self.worker_fee = worker_fee
31 self.p2p_node = p2p_node
32 self.submit_block = submit_block
33 self.set_best_share = set_best_share
34 self.shared_share_hashes = shared_share_hashes
35 self.block_height_var = block_height_var
37 self.pseudoshare_received = variable.Event()
38 self.share_received = variable.Event()
39 self.local_rate_monitor = math.RateMonitor(10*60)
41 self.removed_unstales_var = variable.Variable((0, 0, 0))
42 self.removed_doa_unstales_var = variable.Variable(0)
44 @tracker.verified.removed.watch
46 if share.hash in self.my_share_hashes and tracker.is_child_of(share.hash, self.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.tracker.is_child_of(share.hash, self.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:', 1)(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=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 = dict(self.bitcoind_work.value)
84 bb = self.best_block_header.value
85 if bb is not None and bb['previous_block'] == t['previous_block'] and net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(bb)) <= t['bits'].target:
86 print 'Skipping from block %x to block %x!' % (bb['previous_block'],
87 bitcoin_data.hash256(bitcoin_data.block_header_type.pack(bb)))
89 version=bb['version'],
90 previous_block=bitcoin_data.hash256(bitcoin_data.block_header_type.pack(bb)),
91 bits=bb['bits'], # not always true
93 time=bb['timestamp'] + 600, # better way?
95 merkle_link=bitcoin_data.calculate_merkle_link([None], 0),
96 subsidy=net.PARENT.SUBSIDY_FUNC(self.block_height_var.value),
97 clock_offset=self.bitcoind_work.value['clock_offset'],
98 last_update=self.bitcoind_work.value['last_update'],
101 self.current_work.set(t)
102 self.bitcoind_work.changed.watch(lambda _: compute_work())
103 self.best_block_header.changed.watch(lambda _: compute_work())
106 self.new_work_event = variable.Event()
107 @self.current_work.transitioned.watch
108 def _(before, after):
109 # trigger LP if version/previous_block/bits changed or transactions changed from nothing
110 if any(before[x] != after[x] for x in ['version', 'previous_block', 'bits']) or (not before['transactions'] and after['transactions']):
111 self.new_work_event.happened()
112 self.merged_work.changed.watch(lambda _: self.new_work_event.happened())
113 self.best_share_var.changed.watch(lambda _: self.new_work_event.happened())
115 def get_stale_counts(self):
116 '''Returns (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain)'''
117 my_shares = len(self.my_share_hashes)
118 my_doa_shares = len(self.my_doa_share_hashes)
119 delta = self.tracker.verified.get_delta_to_last(self.best_share_var.value)
120 my_shares_in_chain = delta.my_count + self.removed_unstales_var.value[0]
121 my_doa_shares_in_chain = delta.my_doa_count + self.removed_doa_unstales_var.value
122 orphans_recorded_in_chain = delta.my_orphan_announce_count + self.removed_unstales_var.value[1]
123 doas_recorded_in_chain = delta.my_dead_announce_count + self.removed_unstales_var.value[2]
125 my_shares_not_in_chain = my_shares - my_shares_in_chain
126 my_doa_shares_not_in_chain = my_doa_shares - my_doa_shares_in_chain
128 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)
130 def get_user_details(self, request):
131 user = request.getUser() if request.getUser() is not None else ''
133 desired_pseudoshare_target = None
135 user, desired_pseudoshare_difficulty_str = user.rsplit('+', 1)
137 desired_pseudoshare_target = bitcoin_data.difficulty_to_target(float(desired_pseudoshare_difficulty_str))
141 desired_share_target = 2**256 - 1
143 user, min_diff_str = user.rsplit('/', 1)
145 desired_share_target = bitcoin_data.difficulty_to_target(float(min_diff_str))
149 if random.uniform(0, 100) < self.worker_fee:
150 pubkey_hash = self.my_pubkey_hash
153 pubkey_hash = bitcoin_data.address_to_pubkey_hash(user, self.net.PARENT)
155 pubkey_hash = self.my_pubkey_hash
157 return user, pubkey_hash, desired_share_target, desired_pseudoshare_target
159 def preprocess_request(self, request):
160 user, pubkey_hash, desired_share_target, desired_pseudoshare_target = self.get_user_details(request)
161 return pubkey_hash, desired_share_target, desired_pseudoshare_target
163 def get_work(self, pubkey_hash, desired_share_target, desired_pseudoshare_target):
164 if len(self.p2p_node.peers) == 0 and self.net.PERSIST:
165 raise jsonrpc.Error(-12345, u'p2pool is not connected to any peers')
166 if self.best_share_var.value is None and self.net.PERSIST:
167 raise jsonrpc.Error(-12345, u'p2pool is downloading shares')
168 if time.time() > self.current_work.value['last_update'] + 60:
169 raise jsonrpc.Error(-12345, u'lost contact with bitcoind')
171 if self.merged_work.value:
172 tree, size = bitcoin_data.make_auxpow_tree(self.merged_work.value)
173 mm_hashes = [self.merged_work.value.get(tree.get(i), dict(hash=0))['hash'] for i in xrange(size)]
174 mm_data = '\xfa\xbemm' + bitcoin_data.aux_pow_coinbase_type.pack(dict(
175 merkle_root=bitcoin_data.merkle_hash(mm_hashes),
179 mm_later = [(aux_work, mm_hashes.index(aux_work['hash']), mm_hashes) for chain_id, aux_work in self.merged_work.value.iteritems()]
185 share_info, generate_tx = p2pool_data.Share.generate_transaction(
186 tracker=self.tracker,
188 previous_share_hash=self.best_share_var.value,
189 coinbase=(mm_data + self.current_work.value['coinbaseflags'])[:100],
190 nonce=random.randrange(2**32),
191 pubkey_hash=pubkey_hash,
192 subsidy=self.current_work.value['subsidy'],
193 donation=math.perfect_round(65535*self.donation_percentage/100),
194 stale_info=(lambda (orphans, doas), total, (orphans_recorded_in_chain, doas_recorded_in_chain):
195 'orphan' if orphans > orphans_recorded_in_chain else
196 'doa' if doas > doas_recorded_in_chain else
198 )(*self.get_stale_counts()),
201 block_target=self.current_work.value['bits'].target,
202 desired_timestamp=int(time.time() - self.current_work.value['clock_offset']),
203 desired_target=desired_share_target,
204 ref_merkle_link=dict(branch=[], index=0),
208 if desired_pseudoshare_target is None:
210 if len(self.recent_shares_ts_work) == 50:
211 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])
213 target = min(target, int(2**256/hash_rate))
215 target = desired_pseudoshare_target
216 target = max(target, share_info['bits'].target)
217 for aux_work in self.merged_work.value.itervalues():
218 target = max(target, aux_work['target'])
219 target = math.clip(target, self.net.PARENT.SANE_TARGET_RANGE)
221 transactions = [generate_tx] + list(self.current_work.value['transactions'])
222 packed_generate_tx = bitcoin_data.tx_type.pack(generate_tx)
223 merkle_root = bitcoin_data.check_merkle_link(bitcoin_data.hash256(packed_generate_tx), self.current_work.value['merkle_link'])
225 getwork_time = time.time()
226 merkle_link = self.current_work.value['merkle_link']
228 print 'New work for worker! Difficulty: %.06f Share difficulty: %.06f Total block value: %.6f %s including %i transactions' % (
229 bitcoin_data.target_to_difficulty(target),
230 bitcoin_data.target_to_difficulty(share_info['bits'].target),
231 self.current_work.value['subsidy']*1e-8, self.net.PARENT.SYMBOL,
232 len(self.current_work.value['transactions']),
235 bits = self.current_work.value['bits']
236 previous_block = self.current_work.value['previous_block']
237 ba = bitcoin_getwork.BlockAttempt(
238 version=self.current_work.value['version'],
239 previous_block=self.current_work.value['previous_block'],
240 merkle_root=merkle_root,
241 timestamp=self.current_work.value['time'],
242 bits=self.current_work.value['bits'],
246 received_header_hashes = set()
248 def got_response(header, request):
249 header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(header))
250 pow_hash = self.net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(header))
252 if pow_hash <= header['bits'].target or p2pool.DEBUG:
253 self.submit_block(dict(header=header, txs=transactions), ignore_failure=False)
254 if pow_hash <= header['bits'].target:
256 print 'GOT BLOCK FROM MINER! Passing to bitcoind! %s%064x' % (self.net.PARENT.BLOCK_EXPLORER_URL_PREFIX, header_hash)
259 log.err(None, 'Error while processing potential block:')
261 user, _, _, _ = self.get_user_details(request)
262 assert header['merkle_root'] == merkle_root
263 assert header['previous_block'] == previous_block
264 assert header['bits'] == bits
266 on_time = self.best_share_var.value == share_info['share_data']['previous_share_hash']
268 for aux_work, index, hashes in mm_later:
270 if pow_hash <= aux_work['target'] or p2pool.DEBUG:
271 df = deferral.retry('Error submitting merged block: (will retry)', 10, 10)(aux_work['merged_proxy'].rpc_getauxblock)(
272 pack.IntType(256, 'big').pack(aux_work['hash']).encode('hex'),
273 bitcoin_data.aux_pow_type.pack(dict(
276 block_hash=header_hash,
277 merkle_link=merkle_link,
279 merkle_link=bitcoin_data.calculate_merkle_link(hashes, index),
280 parent_block_header=header,
285 if result != (pow_hash <= aux_work['target']):
286 print >>sys.stderr, 'Merged block submittal result: %s Expected: %s' % (result, pow_hash <= aux_work['target'])
288 print 'Merged block submittal result: %s' % (result,)
291 log.err(err, 'Error submitting merged block:')
293 log.err(None, 'Error while processing merged mining POW:')
295 if pow_hash <= share_info['bits'].target and header_hash not in received_header_hashes:
296 min_header = dict(header);del min_header['merkle_root']
297 hash_link = p2pool_data.prefix_to_hash_link(packed_generate_tx[:-32-4], p2pool_data.Share.gentx_before_refhash)
298 share = p2pool_data.Share(self.net, None, dict(
299 min_header=min_header, share_info=share_info, hash_link=hash_link,
300 ref_merkle_link=dict(branch=[], index=0),
301 ), merkle_link=merkle_link, other_txs=transactions[1:] if pow_hash <= header['bits'].target else None)
303 print 'GOT SHARE! %s %s prev %s age %.2fs%s' % (
305 p2pool_data.format_hash(share.hash),
306 p2pool_data.format_hash(share.previous_hash),
307 time.time() - getwork_time,
308 ' DEAD ON ARRIVAL' if not on_time else '',
310 self.my_share_hashes.add(share.hash)
312 self.my_doa_share_hashes.add(share.hash)
314 self.tracker.add(share)
316 self.tracker.verified.add(share)
317 self.set_best_share()
320 if pow_hash <= header['bits'].target or p2pool.DEBUG:
321 for peer in self.p2p_node.peers.itervalues():
322 peer.sendShares([share])
323 self.shared_share_hashes.add(share.hash)
325 log.err(None, 'Error forwarding block solution:')
327 self.share_received.happened(bitcoin_data.target_to_average_attempts(share.target), not on_time)
329 if pow_hash > target:
330 print 'Worker %s submitted share with hash > target:' % (request.getUser(),)
331 print ' Hash: %56x' % (pow_hash,)
332 print ' Target: %56x' % (target,)
333 elif header_hash in received_header_hashes:
334 print >>sys.stderr, 'Worker %s @ %s submitted share more than once!' % (request.getUser(), request.getClientIP())
336 received_header_hashes.add(header_hash)
338 self.pseudoshare_received.happened(bitcoin_data.target_to_average_attempts(target), not on_time, user)
339 self.recent_shares_ts_work.append((time.time(), bitcoin_data.target_to_average_attempts(target)))
340 while len(self.recent_shares_ts_work) > 50:
341 self.recent_shares_ts_work.pop(0)
342 self.local_rate_monitor.add_datum(dict(work=bitcoin_data.target_to_average_attempts(target), dead=not on_time, user=user))
346 return ba, got_response