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Merge #9970: Improve readability of segwit.py, smartfees.py

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1269b8a Fix logging bug and improve readability of smartfees.py (Suhas Daftuar)
b9f34e8 Improve readability of segwit.py (Suhas Daftuar)

Tree-SHA512: 2c8ff61678c6c407a95a6530e9bd650ae6bb7c9e52f6dd5f256e19253a1358dd1a7aa33a9639fcb07f443e3a21dae71b9f0865c5f1fcaacb2097a3c6766c7eef
This commit is contained in:
Wladimir J. van der Laan 2017-03-14 11:21:14 +01:00 committed by Pasta
parent ee6e5654e0
commit c17356efcf
1 changed files with 30 additions and 34 deletions
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64
qa/rpc-tests/smartfees.py
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@ -7,15 +7,19 @@
from collections import OrderedDict
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
from test_framework.script import CScript, OP_1, OP_DROP, OP_2, OP_HASH160, OP_EQUAL, hash160, OP_TRUE
from test_framework.mininode import CTransaction, CTxIn, CTxOut, COutPoint, ToHex, FromHex, COIN
# Construct 2 trivial P2SH's and the ScriptSigs that spend them
# So we can create many many transactions without needing to spend
# time signing.
P2SH_1 = "8kctg1WWKdoLveifyNnDYtRAqBPpqgL8z2" # P2SH of "OP_1 OP_DROP"
P2SH_2 = "8xp4fcNB8rz9UbZC47tv6eui1ZSPMd3iYT" # P2SH of "OP_2 OP_DROP"
redeem_script_1 = CScript([OP_1, OP_DROP])
redeem_script_2 = CScript([OP_2, OP_DROP])
P2SH_1 = CScript([OP_HASH160, hash160(redeem_script_1), OP_EQUAL])
P2SH_2 = CScript([OP_HASH160, hash160(redeem_script_2), OP_EQUAL])
# Associated ScriptSig's to spend satisfy P2SH_1 and P2SH_2
# 4 bytes of OP_TRUE and push 2-byte redeem script of "OP_1 OP_DROP" or "OP_2 OP_DROP"
SCRIPT_SIG = ["0451025175", "0451025275"]
SCRIPT_SIG = [CScript([OP_TRUE, redeem_script_1]), CScript([OP_TRUE, redeem_script_2])]
global log
@ -55,40 +59,30 @@ def small_txpuzzle_randfee(from_node, conflist, unconflist, amount, min_fee, fee
rand_fee = float(fee_increment)*(1.1892**random.randint(0,28))
# Total fee ranges from min_fee to min_fee + 127*fee_increment
fee = min_fee - fee_increment + satoshi_round(rand_fee)
inputs = []
tx = CTransaction()
total_in = Decimal("0.00000000")
while total_in <= (amount + fee) and len(conflist) > 0:
t = conflist.pop(0)
total_in += t["amount"]
inputs.append({ "txid" : t["txid"], "vout" : t["vout"]} )
tx.vin.append(CTxIn(COutPoint(int(t["txid"], 16), t["vout"]), b""))
if total_in <= amount + fee:
while total_in <= (amount + fee) and len(unconflist) > 0:
t = unconflist.pop(0)
total_in += t["amount"]
inputs.append({ "txid" : t["txid"], "vout" : t["vout"]} )
tx.vin.append(CTxIn(COutPoint(int(t["txid"], 16), t["vout"]), b""))
if total_in <= amount + fee:
raise RuntimeError("Insufficient funds: need %d, have %d"%(amount+fee, total_in))
outputs = {}
outputs = OrderedDict([(P2SH_1, total_in - amount - fee),
(P2SH_2, amount)])
rawtx = from_node.createrawtransaction(inputs, outputs)
rawtx = swap_outputs_in_rawtx(rawtx, outputs, len(inputs))
# createrawtransaction constructs a transaction that is ready to be signed.
# These transactions don't need to be signed, but we still have to insert the ScriptSig
# that will satisfy the ScriptPubKey.
completetx = rawtx[0:10]
inputnum = 0
for inp in inputs:
completetx += rawtx[10+82*inputnum:82+82*inputnum]
completetx += SCRIPT_SIG[inp["vout"]]
completetx += rawtx[84+82*inputnum:92+82*inputnum]
inputnum += 1
completetx += rawtx[10+82*inputnum:]
txid = from_node.sendrawtransaction(completetx, True)
tx.vout.append(CTxOut(int((total_in - amount - fee)*COIN), P2SH_1))
tx.vout.append(CTxOut(int(amount*COIN), P2SH_2))
# These transactions don't need to be signed, but we still have to insert
# the ScriptSig that will satisfy the ScriptPubKey.
for inp in tx.vin:
inp.scriptSig = SCRIPT_SIG[inp.prevout.n]
txid = from_node.sendrawtransaction(ToHex(tx), True)
unconflist.append({ "txid" : txid, "vout" : 0 , "amount" : total_in - amount - fee})
unconflist.append({ "txid" : txid, "vout" : 1 , "amount" : amount})
return (completetx, fee)
return (ToHex(tx), fee)
def split_inputs(from_node, txins, txouts, initial_split = False):
"""
@ -98,19 +92,21 @@ def split_inputs(from_node, txins, txouts, initial_split = False):
which splits the value into 2 outputs which are appended to txouts.
"""
prevtxout = txins.pop()
inputs = []
inputs.append({ "txid" : prevtxout["txid"], "vout" : prevtxout["vout"] })
tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(int(prevtxout["txid"], 16), prevtxout["vout"]), b""))
half_change = satoshi_round(prevtxout["amount"]/2)
rem_change = prevtxout["amount"] - half_change - Decimal("0.00010000")
outputs = OrderedDict([(P2SH_1, half_change), (P2SH_2, rem_change)])
rawtx = from_node.createrawtransaction(inputs, outputs)
rawtx = swap_outputs_in_rawtx(rawtx, outputs, len(inputs))
rem_change = prevtxout["amount"] - half_change - Decimal("0.00001000")
tx.vout.append(CTxOut(int(half_change*COIN), P2SH_1))
tx.vout.append(CTxOut(int(rem_change*COIN), P2SH_2))
# If this is the initial split we actually need to sign the transaction
# Otherwise we just need to insert the property ScriptSig
# Otherwise we just need to insert the proper ScriptSig
if (initial_split) :
completetx = from_node.signrawtransaction(rawtx)["hex"]
completetx = from_node.signrawtransaction(ToHex(tx))["hex"]
else :
completetx = rawtx[0:82] + SCRIPT_SIG[prevtxout["vout"]] + rawtx[84:]
tx.vin[0].scriptSig = SCRIPT_SIG[prevtxout["vout"]]
completetx = ToHex(tx)
txid = from_node.sendrawtransaction(completetx, True)
txouts.append({ "txid" : txid, "vout" : 0 , "amount" : half_change})
txouts.append({ "txid" : txid, "vout" : 1 , "amount" : rem_change})