from twisted.python import log
import p2pool
-from p2pool import skiplists
from p2pool.bitcoin import data as bitcoin_data, script, sha256
from p2pool.util import math, forest, pack
# shares
-small_block_header_type = pack.ComposedType([
- ('version', pack.VarIntType()), # XXX must be constrained to 32 bits
- ('previous_block', pack.PossiblyNoneType(0, pack.IntType(256))),
- ('timestamp', pack.IntType(32)),
- ('bits', bitcoin_data.FloatingIntegerType()),
- ('nonce', pack.IntType(32)),
-])
-
-share_data_type = pack.ComposedType([
- ('previous_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
- ('coinbase', pack.VarStrType()),
- ('nonce', pack.IntType(32)),
- ('pubkey_hash', pack.IntType(160)),
- ('subsidy', pack.IntType(64)),
- ('donation', pack.IntType(16)),
- ('stale_info', pack.IntType(8)), # 0 nothing, 253 orphan, 254 doa
-])
-
-share_info_type = pack.ComposedType([
- ('share_data', share_data_type),
- ('max_bits', bitcoin_data.FloatingIntegerType()),
- ('bits', bitcoin_data.FloatingIntegerType()),
- ('timestamp', pack.IntType(32)),
-])
-
-share1a_type = pack.ComposedType([
- ('min_header', small_block_header_type),
- ('share_info', share_info_type),
- ('hash_link', hash_link_type),
- ('merkle_branch', bitcoin_data.merkle_branch_type),
-])
-
-share1b_type = pack.ComposedType([
- ('min_header', small_block_header_type),
- ('share_info', share_info_type),
- ('hash_link', hash_link_type),
- ('other_txs', pack.ListType(bitcoin_data.tx_type)),
-])
-
-
-# type:
-# 2: share1a
-# 3: share1b
-
share_type = pack.ComposedType([
('type', pack.VarIntType()),
('contents', pack.VarStrType()),
])
-
-def get_pool_attempts_per_second(tracker, previous_share_hash, dist, min_work=False, integer=False):
- assert dist >= 2
- near = tracker.shares[previous_share_hash]
- far = tracker.shares[tracker.get_nth_parent_hash(previous_share_hash, dist - 1)]
- attempts = tracker.get_work(near.hash) - tracker.get_work(far.hash) if not min_work else tracker.get_delta(near.hash).min_work - tracker.get_delta(far.hash).min_work
- time = near.timestamp - far.timestamp
- if time <= 0:
- time = 1
- if integer:
- return attempts//time
- return attempts/time
-
-def get_average_stale_prop(tracker, share_hash, lookbehind):
- stales = sum(1 for share in tracker.get_chain(share_hash, lookbehind) if share.share_data['stale_info'] in [253, 254])
- return stales/(lookbehind + stales)
-
-DONATION_SCRIPT = '4104ffd03de44a6e11b9917f3a29f9443283d9871c9d743ef30d5eddcd37094b64d1b3d8090496b53256786bf5c82932ec23c3b74d9f05a6f95a8b5529352656664bac'.decode('hex')
-
-ref_type = pack.ComposedType([
- ('identifier', pack.FixedStrType(64//8)),
- ('share_info', share_info_type),
-])
-
-gentx_before_refhash = pack.VarStrType().pack(DONATION_SCRIPT) + pack.IntType(64).pack(0) + pack.VarStrType().pack('\x20' + pack.IntType(256).pack(0))[:2]
-
-def generate_transaction(tracker, share_data, block_target, desired_timestamp, desired_target, net):
- previous_share = tracker.shares[share_data['previous_share_hash']] if share_data['previous_share_hash'] is not None else None
-
- height, last = tracker.get_height_and_last(share_data['previous_share_hash'])
- assert height >= net.REAL_CHAIN_LENGTH or last is None
- if height < net.TARGET_LOOKBEHIND:
- pre_target3 = net.MAX_TARGET
+def load_share(share, net, peer):
+ if share['type'] in [0, 1, 2, 3]:
+ from p2pool import p2p
+ raise p2p.PeerMisbehavingError('sent an obsolete share')
+ elif share['type'] == 4:
+ return Share(net, peer, other_txs=None, **Share.share1a_type.unpack(share['contents']))
+ elif share['type'] == 5:
+ share1b = Share.share1b_type.unpack(share['contents'])
+ return Share(net, peer, merkle_link=bitcoin_data.calculate_merkle_link([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in share1b['other_txs']], 0), **share1b)
+ elif share['type'] == 6:
+ return NewShare(net, peer, other_txs=None, **NewShare.share1a_type.unpack(share['contents']))
+ elif share['type'] == 7:
+ share1b = NewShare.share1b_type.unpack(share['contents'])
+ return NewShare(net, peer, merkle_link=bitcoin_data.calculate_merkle_link([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in share1b['other_txs']], 0), **share1b)
else:
- attempts_per_second = get_pool_attempts_per_second(tracker, share_data['previous_share_hash'], net.TARGET_LOOKBEHIND, min_work=True, integer=True)
- pre_target = 2**256//(net.SHARE_PERIOD*attempts_per_second) - 1 if attempts_per_second else 2**256-1
- pre_target2 = math.clip(pre_target, (previous_share.max_target*9//10, previous_share.max_target*11//10))
- pre_target3 = math.clip(pre_target2, (0, net.MAX_TARGET))
- max_bits = bitcoin_data.FloatingInteger.from_target_upper_bound(pre_target3)
- bits = bitcoin_data.FloatingInteger.from_target_upper_bound(math.clip(desired_target, (pre_target3//10, pre_target3)))
-
- weights, total_weight, donation_weight = tracker.get_cumulative_weights(share_data['previous_share_hash'],
- min(height, net.REAL_CHAIN_LENGTH),
- 65535*net.SPREAD*bitcoin_data.target_to_average_attempts(block_target),
- )
- assert total_weight == sum(weights.itervalues()) + donation_weight, (total_weight, sum(weights.itervalues()) + donation_weight)
-
- amounts = dict((script, share_data['subsidy']*(199*weight)//(200*total_weight)) for script, weight in weights.iteritems()) # 99.5% goes according to weights prior to this share
- this_script = bitcoin_data.pubkey_hash_to_script2(share_data['pubkey_hash'])
- amounts[this_script] = amounts.get(this_script, 0) + share_data['subsidy']//200 # 0.5% goes to block finder
- amounts[DONATION_SCRIPT] = amounts.get(DONATION_SCRIPT, 0) + share_data['subsidy'] - sum(amounts.itervalues()) # all that's left over is the donation weight and some extra satoshis due to rounding
-
- if sum(amounts.itervalues()) != share_data['subsidy'] or any(x < 0 for x in amounts.itervalues()):
- raise ValueError()
-
- dests = sorted(amounts.iterkeys(), key=lambda script: (script == DONATION_SCRIPT, amounts[script], script))[-4000:] # block length limit, unlikely to ever be hit
-
- share_info = dict(
- share_data=share_data,
- max_bits=max_bits,
- bits=bits,
- timestamp=math.clip(desired_timestamp, (
- (previous_share.timestamp + net.SHARE_PERIOD) - (net.SHARE_PERIOD - 1), # = previous_share.timestamp + 1
- (previous_share.timestamp + net.SHARE_PERIOD) + (net.SHARE_PERIOD - 1),
- )) if previous_share is not None else desired_timestamp,
- )
-
- return share_info, dict(
- version=1,
- tx_ins=[dict(
- previous_output=None,
- sequence=None,
- script=share_data['coinbase'].ljust(2, '\x00'),
- )],
- tx_outs=[dict(value=amounts[script], script=script) for script in dests if amounts[script]] + [dict(
- value=0,
- script='\x20' + pack.IntType(256).pack(bitcoin_data.hash256(ref_type.pack(dict(
- identifier=net.IDENTIFIER,
- share_info=share_info,
- )))),
- )],
- lock_time=0,
- )
+ raise ValueError('unknown share type: %r' % (share['type'],))
-def get_expected_payouts(tracker, best_share_hash, block_target, subsidy, net):
- weights, total_weight, donation_weight = tracker.get_cumulative_weights(best_share_hash, min(tracker.get_height(best_share_hash), net.REAL_CHAIN_LENGTH), 65535*net.SPREAD*bitcoin_data.target_to_average_attempts(block_target))
- res = dict((script, subsidy*weight//total_weight) for script, weight in weights.iteritems())
- res[DONATION_SCRIPT] = res.get(DONATION_SCRIPT, 0) + subsidy - sum(res.itervalues())
- return res
+DONATION_SCRIPT = '4104ffd03de44a6e11b9917f3a29f9443283d9871c9d743ef30d5eddcd37094b64d1b3d8090496b53256786bf5c82932ec23c3b74d9f05a6f95a8b5529352656664bac'.decode('hex')
class Share(object):
- __slots__ = 'net min_header share_info hash_link merkle_branch other_txs hash share_data max_target target timestamp previous_hash new_script gentx_hash header pow_hash header_hash time_seen peer'.split(' ')
+ small_block_header_type = pack.ComposedType([
+ ('version', pack.VarIntType()), # XXX must be constrained to 32 bits
+ ('previous_block', pack.PossiblyNoneType(0, pack.IntType(256))),
+ ('timestamp', pack.IntType(32)),
+ ('bits', bitcoin_data.FloatingIntegerType()),
+ ('nonce', pack.IntType(32)),
+ ])
+
+ share_data_type = pack.ComposedType([
+ ('previous_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
+ ('coinbase', pack.VarStrType()),
+ ('nonce', pack.IntType(32)),
+ ('pubkey_hash', pack.IntType(160)),
+ ('subsidy', pack.IntType(64)),
+ ('donation', pack.IntType(16)),
+ ('stale_info', pack.EnumType(pack.IntType(8), dict((k, {0: None, 253: 'orphan', 254: 'doa'}.get(k, 'unk%i' % (k,))) for k in xrange(256)))),
+ ('desired_version', pack.VarIntType()),
+ ])
+
+ share_info_type = pack.ComposedType([
+ ('share_data', share_data_type),
+ ('far_share_hash', pack.PossiblyNoneType(0, pack.IntType(256))),
+ ('max_bits', bitcoin_data.FloatingIntegerType()),
+ ('bits', bitcoin_data.FloatingIntegerType()),
+ ('timestamp', pack.IntType(32)),
+ ])
+
+ share_common_type = pack.ComposedType([
+ ('min_header', small_block_header_type),
+ ('share_info', share_info_type),
+ ('ref_merkle_link', pack.ComposedType([
+ ('branch', pack.ListType(pack.IntType(256))),
+ ('index', pack.VarIntType()),
+ ])),
+ ('hash_link', hash_link_type),
+ ])
+ share1a_type = pack.ComposedType([
+ ('common', share_common_type),
+ ('merkle_link', pack.ComposedType([
+ ('branch', pack.ListType(pack.IntType(256))),
+ ('index', pack.IntType(0)), # it will always be 0
+ ])),
+ ])
+ share1b_type = pack.ComposedType([
+ ('common', share_common_type),
+ ('other_txs', pack.ListType(bitcoin_data.tx_type)),
+ ])
+
+ ref_type = pack.ComposedType([
+ ('identifier', pack.FixedStrType(64//8)),
+ ('share_info', share_info_type),
+ ])
+
+ gentx_before_refhash = pack.VarStrType().pack(DONATION_SCRIPT) + pack.IntType(64).pack(0) + pack.VarStrType().pack('\x20' + pack.IntType(256).pack(0))[:2]
@classmethod
- def from_share(cls, share, net, peer):
- if share['type'] == 2:
- return cls(net, peer, other_txs=None, **share1a_type.unpack(share['contents']))
- elif share['type'] == 3:
- share1b = share1b_type.unpack(share['contents'])
- return cls(net, peer, merkle_branch=bitcoin_data.calculate_merkle_branch([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in share1b['other_txs']], 0), **share1b)
+ def generate_transaction(cls, tracker, share_data, block_target, desired_timestamp, desired_target, ref_merkle_link, net):
+ previous_share = tracker.shares[share_data['previous_share_hash']] if share_data['previous_share_hash'] is not None else None
+
+ height, last = tracker.get_height_and_last(share_data['previous_share_hash'])
+ assert height >= net.REAL_CHAIN_LENGTH or last is None
+ if height < net.TARGET_LOOKBEHIND:
+ pre_target3 = net.MAX_TARGET
else:
- raise ValueError('unknown share type: %r' % (share['type'],))
-
- def __init__(self, net, peer, min_header, share_info, hash_link, merkle_branch, other_txs):
- if len(share_info['share_data']['coinbase']) > 100:
- raise ValueError('''coinbase too large! %i bytes''' % (len(self.share_data['coinbase']),))
+ attempts_per_second = get_pool_attempts_per_second(tracker, share_data['previous_share_hash'], net.TARGET_LOOKBEHIND, min_work=True, integer=True)
+ pre_target = 2**256//(net.SHARE_PERIOD*attempts_per_second) - 1 if attempts_per_second else 2**256-1
+ pre_target2 = math.clip(pre_target, (previous_share.max_target*9//10, previous_share.max_target*11//10))
+ pre_target3 = math.clip(pre_target2, (0, net.MAX_TARGET))
+ max_bits = bitcoin_data.FloatingInteger.from_target_upper_bound(pre_target3)
+ bits = bitcoin_data.FloatingInteger.from_target_upper_bound(math.clip(desired_target, (pre_target3//10, pre_target3)))
- if len(merkle_branch) > 16:
- raise ValueError('merkle_branch too long!')
+ weights, total_weight, donation_weight = tracker.get_cumulative_weights(share_data['previous_share_hash'],
+ min(height, net.REAL_CHAIN_LENGTH),
+ 65535*net.SPREAD*bitcoin_data.target_to_average_attempts(block_target),
+ )
+ assert total_weight == sum(weights.itervalues()) + donation_weight, (total_weight, sum(weights.itervalues()) + donation_weight)
- if p2pool.DEBUG and other_txs is not None and bitcoin_data.calculate_merkle_branch([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in other_txs], 0) != merkle_branch:
- raise ValueError('merkle_branch and other_txs do not match')
+ amounts = dict((script, share_data['subsidy']*(199*weight)//(200*total_weight)) for script, weight in weights.iteritems()) # 99.5% goes according to weights prior to this share
+ this_script = bitcoin_data.pubkey_hash_to_script2(share_data['pubkey_hash'])
+ amounts[this_script] = amounts.get(this_script, 0) + share_data['subsidy']//200 # 0.5% goes to block finder
+ amounts[DONATION_SCRIPT] = amounts.get(DONATION_SCRIPT, 0) + share_data['subsidy'] - sum(amounts.itervalues()) # all that's left over is the donation weight and some extra satoshis due to rounding
- assert not hash_link['extra_data'], repr(hash_link['extra_data'])
+ if sum(amounts.itervalues()) != share_data['subsidy'] or any(x < 0 for x in amounts.itervalues()):
+ raise ValueError()
+ dests = sorted(amounts.iterkeys(), key=lambda script: (script == DONATION_SCRIPT, amounts[script], script))[-4000:] # block length limit, unlikely to ever be hit
+
+ share_info = dict(
+ share_data=share_data,
+ far_share_hash=None if last is None and height < 99 else tracker.get_nth_parent_hash(share_data['previous_share_hash'], 99),
+ max_bits=max_bits,
+ bits=bits,
+ timestamp=math.clip(desired_timestamp, (
+ (previous_share.timestamp + net.SHARE_PERIOD) - (net.SHARE_PERIOD - 1), # = previous_share.timestamp + 1
+ (previous_share.timestamp + net.SHARE_PERIOD) + (net.SHARE_PERIOD - 1),
+ )) if previous_share is not None else desired_timestamp,
+ )
+
+ return share_info, dict(
+ version=1,
+ tx_ins=[dict(
+ previous_output=None,
+ sequence=None,
+ script=share_data['coinbase'].ljust(2, '\x00'),
+ )],
+ tx_outs=[dict(value=amounts[script], script=script) for script in dests if amounts[script] or script == DONATION_SCRIPT] + [dict(
+ value=0,
+ script='\x20' + cls.get_ref_hash(net, share_info, ref_merkle_link),
+ )],
+ lock_time=0,
+ )
+
+ @classmethod
+ def get_ref_hash(cls, net, share_info, ref_merkle_link):
+ return pack.IntType(256).pack(bitcoin_data.check_merkle_link(bitcoin_data.hash256(cls.ref_type.pack(dict(
+ identifier=net.IDENTIFIER,
+ share_info=share_info,
+ ))), ref_merkle_link))
+
+ __slots__ = 'net peer common min_header share_info hash_link merkle_link other_txs hash share_data max_target target timestamp previous_hash new_script desired_version gentx_hash header pow_hash header_hash time_seen'.split(' ')
+
+ def __init__(self, net, peer, common, merkle_link, other_txs):
self.net = net
self.peer = peer
- self.min_header = min_header
- self.share_info = share_info
- self.hash_link = hash_link
- self.merkle_branch = merkle_branch
+ self.common = common
+ self.min_header = common['min_header']
+ self.share_info = common['share_info']
+ self.hash_link = common['hash_link']
+ self.merkle_link = merkle_link
self.other_txs = other_txs
+ if len(self.share_info['share_data']['coinbase']) > 100:
+ raise ValueError('''coinbase too large! %i bytes''' % (len(self.self.share_data['coinbase']),))
+
+ if len(merkle_link['branch']) > 16:
+ raise ValueError('merkle branch too long!')
+
+ if p2pool.DEBUG and other_txs is not None and bitcoin_data.calculate_merkle_link([0] + [bitcoin_data.hash256(bitcoin_data.tx_type.pack(x)) for x in other_txs], 0) != merkle_link:
+ raise ValueError('merkle_link and other_txs do not match')
+
+ assert not self.hash_link['extra_data'], repr(self.hash_link['extra_data'])
+
self.share_data = self.share_info['share_data']
self.max_target = self.share_info['max_bits'].target
self.target = self.share_info['bits'].target
self.timestamp = self.share_info['timestamp']
self.previous_hash = self.share_data['previous_share_hash']
self.new_script = bitcoin_data.pubkey_hash_to_script2(self.share_data['pubkey_hash'])
+ self.desired_version = self.share_data['desired_version']
self.gentx_hash = check_hash_link(
- hash_link,
- pack.IntType(256).pack(bitcoin_data.hash256(ref_type.pack(dict(
- identifier=net.IDENTIFIER,
- share_info=share_info,
- )))) + pack.IntType(32).pack(0),
- gentx_before_refhash,
+ self.hash_link,
+ self.get_ref_hash(net, self.share_info, common['ref_merkle_link']) + pack.IntType(32).pack(0),
+ self.gentx_before_refhash,
)
- merkle_root = bitcoin_data.check_merkle_branch(self.gentx_hash, 0, merkle_branch)
- self.header = dict(min_header, merkle_root=merkle_root)
+ merkle_root = bitcoin_data.check_merkle_link(self.gentx_hash, merkle_link)
+ self.header = dict(self.min_header, merkle_root=merkle_root)
self.pow_hash = net.PARENT.POW_FUNC(bitcoin_data.block_header_type.pack(self.header))
- self.header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(self.header))
+ self.hash = self.header_hash = bitcoin_data.hash256(bitcoin_data.block_header_type.pack(self.header))
if self.pow_hash > self.target:
- print 'hash %x' % self.pow_hash
- print 'targ %x' % self.target
- raise ValueError('not enough work!')
+ from p2pool import p2p
+ raise p2p.PeerMisbehavingError('share PoW invalid')
if other_txs is not None and not self.pow_hash <= self.header['bits'].target:
raise ValueError('other_txs provided when not a block solution')
if other_txs is None and self.pow_hash <= self.header['bits'].target:
raise ValueError('other_txs not provided when a block solution')
- self.hash = bitcoin_data.hash256(share_type.pack(self.as_share()))
-
# XXX eww
self.time_seen = time.time()
def __repr__(self):
return '<Share %s>' % (' '.join('%s=%r' % (k, getattr(self, k)) for k in self.__slots__),)
+ def as_share(self):
+ if not self.pow_hash <= self.header['bits'].target: # share1a
+ return dict(type=4, contents=self.share1a_type.pack(dict(common=self.common, merkle_link=self.merkle_link)))
+ else: # share1b
+ return dict(type=5, contents=self.share1b_type.pack(dict(common=self.common, other_txs=self.other_txs)))
+
+ def check(self, tracker):
+ if self.share_data['previous_share_hash'] is not None:
+ previous_share = tracker.shares[self.share_data['previous_share_hash']]
+ if isinstance(previous_share, NewShare):
+ from p2pool import p2p
+ raise p2p.PeerMisbehavingError('''Share can't follow NewShare''')
+ share_info, gentx = self.generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.common['ref_merkle_link'], self.net)
+ if share_info != self.share_info:
+ raise ValueError('share_info invalid')
+ if bitcoin_data.hash256(bitcoin_data.tx_type.pack(gentx)) != self.gentx_hash:
+ raise ValueError('''gentx doesn't match hash_link''')
+ return gentx # only used by as_block
+
+ def as_block(self, tracker):
+ if self.other_txs is None:
+ raise ValueError('share does not contain all txs')
+ return dict(header=self.header, txs=[self.check(tracker)] + self.other_txs)
+
+class NewShare(Share):
+ def __init__(self, *args, **kwargs):
+ Share.__init__(self, *args, **kwargs)
+ self.hash = bitcoin_data.hash256(share_type.pack(self.as_share()))
+
def check(self, tracker):
- share_info, gentx = generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.net)
+ if self.share_data['previous_share_hash'] is not None:
+ previous_share = tracker.shares[self.share_data['previous_share_hash']]
+ if isinstance(previous_share, Share):
+ if tracker.get_height(previous_share.hash) < self.net.CHAIN_LENGTH:
+ from p2pool import p2p
+ raise p2p.PeerMisbehavingError('NewShare without enough history')
+ else:
+ # Share -> NewShare only valid if 85% of hashes in [self.net.CHAIN_LENGTH*9//10, self.net.CHAIN_LENGTH] for new version
+ counts = get_desired_version_counts(tracker,
+ tracker.get_nth_parent_hash(previous_share.hash, self.net.CHAIN_LENGTH*9//10), self.net.CHAIN_LENGTH//10)
+ if counts.get(2, 0) < sum(counts.itervalues())*85//100:
+ from p2pool import p2p
+ raise p2p.PeerMisbehavingError('NewShare without enough hash power upgraded')
+ share_info, gentx = self.generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.common['ref_merkle_link'], self.net)
if share_info != self.share_info:
- raise ValueError('share difficulty invalid')
+ raise ValueError('share_info invalid')
if bitcoin_data.hash256(bitcoin_data.tx_type.pack(gentx)) != self.gentx_hash:
raise ValueError('''gentx doesn't match hash_link''')
+ return gentx # only used by as_block
def as_share(self):
if not self.pow_hash <= self.header['bits'].target: # share1a
- return dict(type=2, contents=share1a_type.pack(dict(min_header=self.min_header, share_info=self.share_info, hash_link=self.hash_link, merkle_branch=self.merkle_branch)))
+ return dict(type=6, contents=self.share1a_type.pack(dict(common=self.common, merkle_link=self.merkle_link)))
else: # share1b
- return dict(type=3, contents=share1b_type.pack(dict(min_header=self.min_header, share_info=self.share_info, hash_link=self.hash_link, other_txs=self.other_txs)))
+ return dict(type=7, contents=self.share1b_type.pack(dict(common=self.common, other_txs=self.other_txs)))
+
+
+class WeightsSkipList(forest.TrackerSkipList):
+ # share_count, weights, total_weight
- def as_block(self, tracker):
- if self.other_txs is None:
- raise ValueError('share does not contain all txs')
-
- share_info, gentx = generate_transaction(tracker, self.share_info['share_data'], self.header['bits'].target, self.share_info['timestamp'], self.share_info['bits'].target, self.net)
- assert share_info == self.share_info
-
- return dict(header=self.header, txs=[gentx] + self.other_txs)
+ def get_delta(self, element):
+ from p2pool.bitcoin import data as bitcoin_data
+ share = self.tracker.shares[element]
+ att = bitcoin_data.target_to_average_attempts(share.target)
+ return 1, {share.new_script: att*(65535-share.share_data['donation'])}, att*65535, att*share.share_data['donation']
+
+ def combine_deltas(self, (share_count1, weights1, total_weight1, total_donation_weight1), (share_count2, weights2, total_weight2, total_donation_weight2)):
+ return share_count1 + share_count2, math.add_dicts(weights1, weights2), total_weight1 + total_weight2, total_donation_weight1 + total_donation_weight2
+
+ def initial_solution(self, start, (max_shares, desired_weight)):
+ assert desired_weight % 65535 == 0, divmod(desired_weight, 65535)
+ return 0, None, 0, 0
+
+ def apply_delta(self, (share_count1, weights_list, total_weight1, total_donation_weight1), (share_count2, weights2, total_weight2, total_donation_weight2), (max_shares, desired_weight)):
+ if total_weight1 + total_weight2 > desired_weight and share_count2 == 1:
+ assert (desired_weight - total_weight1) % 65535 == 0
+ script, = weights2.iterkeys()
+ new_weights = {script: (desired_weight - total_weight1)//65535*weights2[script]//(total_weight2//65535)}
+ return share_count1 + share_count2, (weights_list, new_weights), desired_weight, total_donation_weight1 + (desired_weight - total_weight1)//65535*total_donation_weight2//(total_weight2//65535)
+ return share_count1 + share_count2, (weights_list, weights2), total_weight1 + total_weight2, total_donation_weight1 + total_donation_weight2
+
+ def judge(self, (share_count, weights_list, total_weight, total_donation_weight), (max_shares, desired_weight)):
+ if share_count > max_shares or total_weight > desired_weight:
+ return 1
+ elif share_count == max_shares or total_weight == desired_weight:
+ return 0
+ else:
+ return -1
+
+ def finalize(self, (share_count, weights_list, total_weight, total_donation_weight), (max_shares, desired_weight)):
+ assert share_count <= max_shares and total_weight <= desired_weight
+ assert share_count == max_shares or total_weight == desired_weight
+ return math.add_dicts(*math.flatten_linked_list(weights_list)), total_weight, total_donation_weight
class OkayTracker(forest.Tracker):
def __init__(self, net, my_share_hashes, my_doa_share_hashes):
work=lambda share: bitcoin_data.target_to_average_attempts(share.target),
my_count=lambda share: 1 if share.hash in my_share_hashes else 0,
my_doa_count=lambda share: 1 if share.hash in my_doa_share_hashes else 0,
- my_orphan_announce_count=lambda share: 1 if share.hash in my_share_hashes and share.share_data['stale_info'] == 253 else 0,
- my_dead_announce_count=lambda share: 1 if share.hash in my_share_hashes and share.share_data['stale_info'] == 254 else 0,
- )))
- self.verified.get_nth_parent_hash = self.get_nth_parent_hash # self is a superset of self.verified
-
- self.get_cumulative_weights = skiplists.WeightsSkipList(self)
+ my_orphan_announce_count=lambda share: 1 if share.hash in my_share_hashes and share.share_data['stale_info'] == 'orphan' else 0,
+ my_dead_announce_count=lambda share: 1 if share.hash in my_share_hashes and share.share_data['stale_info'] == 'doa' else 0,
+ )), subset_of=self)
+ self.get_cumulative_weights = WeightsSkipList(self)
def attempt_verify(self, share):
if share.hash in self.verified.shares:
if not to_remove:
break
for share_hash in to_remove:
- self.remove(share_hash)
if share_hash in self.verified.shares:
self.verified.remove(share_hash)
+ self.remove(share_hash)
#print "_________", to_remove
# drop tails
if self.shares[aftertail].previous_hash not in self.tails:
print "erk", aftertail, self.shares[aftertail].previous_hash
continue
- self.remove(aftertail)
if aftertail in self.verified.shares:
self.verified.remove(aftertail)
+ self.remove(aftertail)
#end = time.time()
#print "removed! %i %f" % (len(to_remove), (end - start)/len(to_remove))
return self.net.CHAIN_LENGTH, (self.verified.get_work(share_hash) - self.verified.get_work(end_point))//((0 - block_height + 1)*self.net.PARENT.BLOCK_PERIOD)
+def get_pool_attempts_per_second(tracker, previous_share_hash, dist, min_work=False, integer=False):
+ assert dist >= 2
+ near = tracker.shares[previous_share_hash]
+ far = tracker.shares[tracker.get_nth_parent_hash(previous_share_hash, dist - 1)]
+ attempts = tracker.get_delta(near.hash, far.hash).work if not min_work else tracker.get_delta(near.hash, far.hash).min_work
+ time = near.timestamp - far.timestamp
+ if time <= 0:
+ time = 1
+ if integer:
+ return attempts//time
+ return attempts/time
+
+def get_average_stale_prop(tracker, share_hash, lookbehind):
+ stales = sum(1 for share in tracker.get_chain(share_hash, lookbehind) if share.share_data['stale_info'] is not None)
+ return stales/(lookbehind + stales)
+
+def get_stale_counts(tracker, share_hash, lookbehind, rates=False):
+ res = {}
+ for share in tracker.get_chain(share_hash, lookbehind - 1):
+ res['good'] = res.get('good', 0) + bitcoin_data.target_to_average_attempts(share.target)
+ s = share.share_data['stale_info']
+ if s is not None:
+ res[s] = res.get(s, 0) + bitcoin_data.target_to_average_attempts(share.target)
+ if rates:
+ dt = tracker.shares[share_hash].timestamp - tracker.shares[tracker.get_nth_parent_hash(share_hash, lookbehind - 1)].timestamp
+ res = dict((k, v/dt) for k, v in res.iteritems())
+ return res
+
+def get_expected_payouts(tracker, best_share_hash, block_target, subsidy, net):
+ weights, total_weight, donation_weight = tracker.get_cumulative_weights(best_share_hash, min(tracker.get_height(best_share_hash), net.REAL_CHAIN_LENGTH), 65535*net.SPREAD*bitcoin_data.target_to_average_attempts(block_target))
+ res = dict((script, subsidy*weight//total_weight) for script, weight in weights.iteritems())
+ res[DONATION_SCRIPT] = res.get(DONATION_SCRIPT, 0) + subsidy - sum(res.itervalues())
+ return res
+
+def get_desired_version_counts(tracker, best_share_hash, dist):
+ res = {}
+ for share in tracker.get_chain(best_share_hash, dist):
+ res[share.desired_version] = res.get(share.desired_version, 0) + bitcoin_data.target_to_average_attempts(share.target)
+ return res
+
+def get_warnings(tracker, current_work, net):
+ res = []
+
+ desired_version_counts = get_desired_version_counts(tracker, current_work.value['best_share_hash'],
+ min(60*60//net.SHARE_PERIOD, tracker.get_height(current_work.value['best_share_hash'])))
+ majority_desired_version = max(desired_version_counts, key=lambda k: desired_version_counts[k])
+ if majority_desired_version not in [0, 1, 2] and desired_version_counts[majority_desired_version] > sum(desired_version_counts.itervalues())/2:
+ res.append('A MAJORITY OF SHARES CONTAIN A VOTE FOR AN UNSUPPORTED SHARE IMPLEMENTATION! (v%i with %i%% support)\n'
+ 'An upgrade is likely necessary. Check http://p2pool.forre.st/ for more information.' % (
+ majority_desired_version, 100*desired_version_counts[majority_desired_version]/sum(desired_version_counts.itervalues())))
+
+ return res
+
def format_hash(x):
if x is None:
return 'xxxxxxxx'
verified_hashes.add(verified_hash)
elif type_id == 5:
raw_share = share_type.unpack(data_hex.decode('hex'))
- if raw_share['type'] in [0, 1]:
+ if raw_share['type'] in [0, 1, 2, 3]:
continue
- share = Share.from_share(raw_share, self.net, None)
+ share = load_share(raw_share, self.net, None)
yield 'share', share
share_hashes.add(share.hash)
else:
git://git.novaco.in / p2pool.git / blobdiff