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use torba tx parsing on wallet server

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Victor Shyba 2019-03-19 23:02:27 -03:00 committed by Lex Berezhny
parent 66bf6c61f0
commit 22db29ee1d
3 changed files with 29 additions and 50 deletions
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42
lbrynet/wallet/server/block_processor.py
View file

@ -2,6 +2,8 @@ import hashlib
import struct
import msgpack
from lbrynet.extras.wallet.transaction import Transaction, Output
from torba.server.hash import hash_to_hex_str
from torba.server.block_processor import BlockProcessor
@ -36,32 +38,31 @@ class LBRYBlockProcessor(BlockProcessor):
undo_info = []
add_undo = undo_info.append
update_inputs = set()
for tx, txid in txs:
for etx, txid in txs:
update_inputs.clear()
if tx.has_claims:
tx = Transaction(etx.serialize())
for index, output in enumerate(tx.outputs):
claim = output.claim
if isinstance(claim, NameClaim):
if not output.is_claim:
continue
if output.script.is_claim_name:
add_undo(self.advance_claim_name_transaction(output, height, txid, index))
elif isinstance(claim, ClaimUpdate):
update_input = self.db.get_update_input(claim, tx.inputs)
elif output.script.is_update_claim:
update_input = self.db.get_update_input(unhexlify(output.claim_id)[::-1], tx.inputs)
if update_input:
update_inputs.add(update_input)
add_undo(self.advance_update_claim(output, height, txid, index))
else:
info = (hash_to_hex_str(txid), hash_to_hex_str(claim.claim_id),)
info = (hash_to_hex_str(txid), output.claim_id,)
self.logger.error("REJECTED: {} updating {}".format(*info))
elif isinstance(claim, ClaimSupport):
self.advance_support(claim, txid, index, height, output.value)
for txin in tx.inputs:
if txin not in update_inputs:
abandoned_claim_id = self.db.abandon_spent(txin.prev_hash, txin.prev_idx)
abandoned_claim_id = self.db.abandon_spent(txin.txo_ref.hash, txin.txo_ref.position)
if abandoned_claim_id:
add_undo((abandoned_claim_id, self.db.get_claim_info(abandoned_claim_id)))
return undo_info
def advance_update_claim(self, output, height, txid, nout):
claim_id = output.claim.claim_id
def advance_update_claim(self, output: Output, height, txid, nout):
claim_id = unhexlify(output.claim_id)[::-1]
claim_info = self.claim_info_from_output(output, txid, nout, height)
old_claim_info = self.db.get_claim_info(claim_id)
self.db.put_claim_id_for_outpoint(old_claim_info.txid, old_claim_info.nout, None)
@ -73,8 +74,8 @@ class LBRYBlockProcessor(BlockProcessor):
self.db.put_claim_id_for_outpoint(txid, nout, claim_id)
return claim_id, old_claim_info
def advance_claim_name_transaction(self, output, height, txid, nout):
claim_id = claim_id_hash(txid, nout)
def advance_claim_name_transaction(self, output: Output, height, txid, nout):
claim_id = unhexlify(output.claim_id)[::-1]
claim_info = self.claim_info_from_output(output, txid, nout, height)
if claim_info.cert_id:
self.db.put_claim_id_signed_by_cert_id(claim_info.cert_id, claim_id)
@ -132,17 +133,12 @@ class LBRYBlockProcessor(BlockProcessor):
self.db.batched_flush_claims()
return await super().flush(flush_utxos)
def advance_support(self, claim_support, txid, nout, height, amount):
# TODO: check for more controller claim rules, like takeover or ordering
pass
def claim_info_from_output(self, output, txid, nout, height):
amount = output.value
address = self.coin.address_from_script(output.pk_script)
name, value, cert_id = output.claim.name, output.claim.value, None
def claim_info_from_output(self, output: Output, txid, nout, height):
address = self.coin.address_from_script(output.script.source)
name, value, cert_id = output.script.values['claim_name'], output.raw_claim, None
assert txid and address
cert_id = self._checksig(name, value, address)
return ClaimInfo(name, value, txid, nout, amount, address, height, cert_id)
return ClaimInfo(name, value, txid, nout, output.amount, address, height, cert_id)
def _checksig(self, name, value, address):
try:

5
lbrynet/wallet/server/db.py
View file

@ -161,13 +161,12 @@ class LBRYDB(DB):
self.logger.info("[+] Adding claim info for: {}".format(hash_to_hex_str(claim_id)))
self.claim_cache[claim_id] = claim_info.serialized
def get_update_input(self, claim, inputs):
claim_id = claim.claim_id
def get_update_input(self, claim_id, inputs):
claim_info = self.get_claim_info(claim_id)
if not claim_info:
return False
for input in inputs:
if input.prev_hash == claim_info.txid and input.prev_idx == claim_info.nout:
if input.txo_ref.hash == claim_info.txid and input.txo_ref.position == claim_info.nout:
return input
return False

18
lbrynet/wallet/server/tx.py
View file

@ -1,21 +1,5 @@
from torba.server.tx import Deserializer
from lbrynet.wallet.server.opcodes import decode_claim_script
from lbrynet.wallet.server.model import TxClaimOutput, LBRYTx
class LBRYDeserializer(Deserializer):
def _read_output(self):
value = self._read_le_int64()
script = self._read_varbytes() # pk_script
claim = decode_claim_script(script)
claim = claim[0] if claim else None
return TxClaimOutput(value, script, claim)
def read_tx(self):
return LBRYTx(
self._read_le_int32(), # version
self._read_inputs(), # inputs
self._read_outputs(), # outputs
self._read_le_uint32() # locktime
)
pass