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make TXs pickleable

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This commit is contained in:
Lex Berezhny 2020-09-24 12:27:06 -04:00
parent 2d7929f113
commit 2853bb437d
3 changed files with 26 additions and 5 deletions
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5
lbry/blockchain/script.py
View file

@ -4,7 +4,10 @@ from binascii import hexlify
from collections import namedtuple from collections import namedtuple
from .bcd_data_stream import BCDataStream from .bcd_data_stream import BCDataStream
from .util import subclass_tuple
def subclass_tuple(name, base):
return type(name, (base,), {'__slots__': ()})
# bitcoin opcodes # bitcoin opcodes

4
lbry/blockchain/util.py
View file

@ -16,10 +16,6 @@ class ReadOnlyList(Sequence[T]):
return len(self.lst) return len(self.lst)
def subclass_tuple(name, base):
return type(name, (base,), {'__slots__': ()})
class ArithUint256: class ArithUint256:
# https://github.com/bitcoin/bitcoin/blob/master/src/arith_uint256.cpp # https://github.com/bitcoin/bitcoin/blob/master/src/arith_uint256.cpp

22
tests/unit/blockchain/test_transaction.py
View file

@ -1,4 +1,5 @@
from unittest import TestCase from unittest import TestCase
from pickle import dumps
from binascii import hexlify, unhexlify from binascii import hexlify, unhexlify
from lbry import Config, Ledger, Transaction from lbry import Config, Ledger, Transaction
@ -253,3 +254,24 @@ class TestTransactionSerialization(TestCase):
txo = t.outputs[0] txo = t.outputs[0]
self.assertEqual(txo.script.template.name, 'pay_script_hash') self.assertEqual(txo.script.template.name, 'pay_script_hash')
self.assertEqual(txo.get_address(self.ledger), 'rVBhueRT9E8RPdVcpCdXV5gRiiXVjE6VD9') self.assertEqual(txo.get_address(self.ledger), 'rVBhueRT9E8RPdVcpCdXV5gRiiXVjE6VD9')
def test_tx_with_claim_can_pickle(self):
# used to fail with this error:
# _pickle.PicklingError: Can't pickle <class 'lbry.blockchain.util.PUSH_SINGLE'>:
# attribute lookup PUSH_SINGLE on lbry.blockchain.util failed
raw = unhexlify(
"01000000012433e1b327603843b083344dbae5306ff7927f87ebbc5ae9eb50856c5b53fd1d000000006a4"
"7304402201a91e1023d11c383a11e26bf8f9034087b15d8ada78fa565e0610455ffc8505e0220038a63a6"
"ecb399723d4f1f78a20ddec0a78bf8fb6c75e63e166ef780f3944fbf0121021810150a2e4b088ec51b20c"
"be1b335962b634545860733367824d5dc3eda767dffffffff028096980000000000fdff00b50463617473"
"4cdc080110011a7808011230080410011a084d616361726f6e6922002a003214416c6c207269676874732"
"072657365727665642e38004a0052005a001a42080110011a30add80aaf02559ba09853636a0658c42b72"
"7cb5bb4ba8acedb4b7fe656065a47a31878dbf9912135ddb9e13806cc1479d220a696d6167652f6a70656"
"72a5c080110031a404180cc0fa4d3839ee29cca866baed25fafb43fca1eb3b608ee889d351d3573d042c7"
"b83e2e643db0d8e062a04e6e9ae6b90540a2f95fe28638d0f18af4361a1c2214f73de93f4299fb32c32f9"
"49e02198a8e91101abd6d7576a914be16e4b0f9bd8f6d47d02b3a887049c36d3b84cb88ac0cd2520b0000"
"00001976a914f521178feb733a719964e1da4a9efb09dcc39cfa88ac00000000"
)
tx = Transaction(raw)
tx.outputs[0].script.values # triggers parsing, needed to reproduce pickle error
dumps(tx)