144 lines
5.6 KiB
Python
144 lines
5.6 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) 2019 The PIVX developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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# -*- coding: utf-8 -*-
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import subprocess
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from test_framework.messages import CTransaction, CTxIn, CTxOut, COutPoint, COIN
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from test_framework.messages import msg_getheaders, msg_headers, CBlockHeader
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from test_framework.mininode import P2PInterface, mininode_lock
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from test_framework.script import CScript
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from test_framework.util import wait_until
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''' -------------------------------------------------------------------------
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TestNode CLASS --------------------------------------------------------------
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A peer we use to send messsages to agrariand and store responses
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Extends P2PInterface.
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'''
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# TestNode: A peer we use to send messages to bitcoind, and store responses.
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class TestNode(P2PInterface):
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def __init__(self):
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super().__init__()
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self.last_sendcmpct = []
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self.block_announced = False
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# Store the hashes of blocks we've seen announced.
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# This is for synchronizing the p2p message traffic,
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# so we can eg wait until a particular block is announced.
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self.announced_blockhashes = set()
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def on_sendcmpct(self, message):
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self.last_sendcmpct.append(message)
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def on_cmpctblock(self, message):
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self.block_announced = True
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self.last_message["cmpctblock"].header_and_shortids.header.calc_sha256()
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self.announced_blockhashes.add(self.last_message["cmpctblock"].header_and_shortids.header.sha256)
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def on_headers(self, message):
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self.block_announced = True
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for x in self.last_message["headers"].headers:
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x.calc_sha256()
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self.announced_blockhashes.add(x.sha256)
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def on_inv(self, message):
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for x in self.last_message["inv"].inv:
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if x.type == 2:
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self.block_announced = True
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self.announced_blockhashes.add(x.hash)
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# Requires caller to hold mininode_lock
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def received_block_announcement(self):
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return self.block_announced
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def clear_block_announcement(self):
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with mininode_lock:
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self.block_announced = False
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self.last_message.pop("inv", None)
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self.last_message.pop("headers", None)
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self.last_message.pop("cmpctblock", None)
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def get_headers(self, locator, hashstop):
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msg = msg_getheaders()
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msg.locator.vHave = locator
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msg.hashstop = hashstop
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self.connection.send_message(msg)
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def send_header_for_blocks(self, new_blocks):
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headers_message = msg_headers()
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headers_message.headers = [CBlockHeader(b) for b in new_blocks]
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self.send_message(headers_message)
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def request_headers_and_sync(self, locator, hashstop=0):
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self.clear_block_announcement()
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self.get_headers(locator, hashstop)
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wait_until(self.received_block_announcement, timeout=30, lock=mininode_lock)
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self.clear_block_announcement()
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# Block until a block announcement for a particular block hash is received.
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def wait_for_block_announcement(self, block_hash, timeout=30):
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def received_hash():
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return (block_hash in self.announced_blockhashes)
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wait_until(received_hash, timeout=timeout, lock=mininode_lock)
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def send_await_disconnect(self, message, timeout=30):
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"""Sends a message to the node and wait for disconnect.
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This is used when we want to send a message into the node that we expect
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will get us disconnected, eg an invalid block."""
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self.send_message(message)
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wait_until(lambda: not self.connected, timeout=timeout, lock=mininode_lock)
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''' -------------------------------------------------------------------------
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MISC METHODS ----------------------------------------------------------------
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'''
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def dir_size(path):
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''' returns the size in bytes of the directory at given path
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'''
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size = subprocess.check_output(['du','-shk', path]).split()[0].decode('utf-8')
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return int(size)
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def create_transaction(outPoint, sig, value, nTime, scriptPubKey=CScript()):
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''' creates a CTransaction object provided input-output data
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'''
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tx = CTransaction()
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tx.vin.append(CTxIn(outPoint, sig, 0xffffffff))
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tx.vout.append(CTxOut(value, scriptPubKey))
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tx.nTime = nTime
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tx.calc_sha256()
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return tx
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def utxo_to_stakingPrevOuts(utxo, stakingPrevOuts, txBlocktime, stakeModifier, zpos=False):
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'''
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Updates a map of unspent outputs to (amount, blocktime) to be used as stake inputs
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:param utxo: <if zpos=False> (map) utxo JSON object returned from listunspent
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<if zpos=True> (map) mint JSON object returned from listmintedzerocoins
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stakingPrevOuts: ({COutPoint --> (int, int, int, str)} dictionary)
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map outpoints to amount, block_time, nStakeModifier, hashStake hex
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txBlocktime: (int) block time of the stake Modifier
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stakeModifier: (int) stake modifier for the current utxo
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zpos: (bool) if true, utxo holds a zerocoin serial hash
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:return
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'''
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COINBASE_MATURITY = 200 if zpos else 100
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if utxo['confirmations'] > COINBASE_MATURITY:
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if zpos:
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outPoint = utxo["serial hash"]
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stakingPrevOuts[outPoint] = (int(utxo["denomination"]) * COIN, txBlocktime, stakeModifier, utxo['hash stake'])
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else:
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outPoint = COutPoint(int(utxo['txid'], 16), utxo['vout'])
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stakingPrevOuts[outPoint] = (int(utxo['amount'])*COIN, txBlocktime, stakeModifier, "")
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return
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