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Rename is_coinbase to is_generation and make it efficient (#569)

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This commit is contained in:
John L. Jegutanis 2018-08-12 13:43:08 +02:00 committed by Neil
parent 05c9e6b38f
commit 00815442a9
2 changed files with 19 additions and 22 deletions
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37
electrumx/lib/tx.py
View File

@ -42,8 +42,8 @@ class Tx(namedtuple("Tx", "version inputs outputs locktime")):
'''Class representing a transaction.'''
@cachedproperty
def is_coinbase(self):
return self.inputs[0].is_coinbase
def is_generation(self):
return self.inputs[0].is_generation
def serialize(self):
return b''.join((
@ -63,9 +63,9 @@ class TxInput(namedtuple("TxInput", "prev_hash prev_idx script sequence")):
MINUS_1 = 4294967295
@cachedproperty
def is_coinbase(self):
return (self.prev_hash == TxInput.ZERO and
self.prev_idx == TxInput.MINUS_1)
def is_generation(self):
return (self.prev_idx == TxInput.MINUS_1 and
self.prev_hash == TxInput.ZERO)
def __str__(self):
script = self.script.hex()
@ -215,8 +215,8 @@ class TxSegWit(namedtuple("Tx", "version marker flag inputs outputs "
'''Class representing a SegWit transaction.'''
@cachedproperty
def is_coinbase(self):
return self.inputs[0].is_coinbase
def is_generation(self):
return self.inputs[0].is_generation
class DeserializerSegWit(Deserializer):
@ -327,8 +327,8 @@ class TxJoinSplit(namedtuple("Tx", "version inputs outputs locktime")):
'''Class representing a JoinSplit transaction.'''
@cachedproperty
def is_coinbase(self):
return self.inputs[0].is_coinbase if len(self.inputs) > 0 else False
def is_generation(self):
return self.inputs[0].is_generation if len(self.inputs) > 0 else False
class DeserializerZcash(DeserializerEquihash):
@ -361,8 +361,8 @@ class TxTime(namedtuple("Tx", "version time inputs outputs locktime")):
'''Class representing transaction that has a time field.'''
@cachedproperty
def is_coinbase(self):
return self.inputs[0].is_coinbase
def is_generation(self):
return self.inputs[0].is_generation
class DeserializerTxTime(Deserializer):
@ -445,13 +445,10 @@ class DeserializerGroestlcoin(DeserializerSegWit):
class TxInputDcr(namedtuple("TxInput", "prev_hash prev_idx tree sequence")):
'''Class representing a Decred transaction input.'''
ZERO = bytes(32)
MINUS_1 = 4294967295
@cachedproperty
def is_coinbase(self):
return (self.prev_hash == TxInputDcr.ZERO and
self.prev_idx == TxInputDcr.MINUS_1)
def is_generation(self):
return (self.prev_idx == TxInput.MINUS_1 and
self.prev_hash == TxInput.ZERO)
def __str__(self):
prev_hash = hash_to_hex_str(self.prev_hash)
@ -469,8 +466,8 @@ class TxDcr(namedtuple("Tx", "version inputs outputs locktime expiry "
'''Class representing a Decred transaction.'''
@cachedproperty
def is_coinbase(self):
return self.inputs[0].is_coinbase
def is_generation(self):
return self.inputs[0].is_generation
class DeserializerDecred(Deserializer):
@ -546,7 +543,7 @@ class DeserializerDecred(Deserializer):
# Drop the coinbase-like input from a vote tx as it creates problems
# with UTXOs lookups and mempool management
if inputs[0].is_coinbase and len(inputs) > 1:
if inputs[0].is_generation and len(inputs) > 1:
inputs = inputs[1:]
if produce_hash:

4
electrumx/server/block_processor.py
View File

@ -411,7 +411,7 @@ class BlockProcessor(object):
tx_numb = s_pack('<I', tx_num)
# Spend the inputs
if not tx.is_coinbase:
if not tx.is_generation:
for txin in tx.inputs:
cache_value = spend_utxo(txin.prev_hash, txin.prev_idx)
undo_info_append(cache_value)
@ -490,7 +490,7 @@ class BlockProcessor(object):
touched.add(cache_value[:-12])
# Restore the inputs
if not tx.is_coinbase:
if not tx.is_generation:
for txin in reversed(tx.inputs):
n -= undo_entry_len
undo_item = undo_info[n:n + undo_entry_len]