594 lines
21 KiB
Python
594 lines
21 KiB
Python
# Copyright (c) 2014 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or https://www.opensource.org/licenses/mit-license.php .
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#
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# Helpful routines for regression testing
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#
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# Add python-bitcoinrpc to module search path:
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import os
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import sys
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from binascii import hexlify, unhexlify
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from base64 import b64encode
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from decimal import Decimal, ROUND_DOWN
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import json
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import random
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import shutil
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import subprocess
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import tempfile
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import time
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import re
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import errno
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from . import coverage
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from .authproxy import AuthServiceProxy, JSONRPCException
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COVERAGE_DIR = None
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PRE_BLOSSOM_BLOCK_TARGET_SPACING = 150
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POST_BLOSSOM_BLOCK_TARGET_SPACING = 75
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def enable_coverage(dirname):
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"""Maintain a log of which RPC calls are made during testing."""
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global COVERAGE_DIR
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COVERAGE_DIR = dirname
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def get_rpc_proxy(url, node_number, timeout=None):
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"""
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Args:
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url (str): URL of the RPC server to call
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node_number (int): the node number (or id) that this calls to
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Kwargs:
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timeout (int): HTTP timeout in seconds
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Returns:
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AuthServiceProxy. convenience object for making RPC calls.
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"""
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proxy_kwargs = {}
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if timeout is not None:
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proxy_kwargs['timeout'] = timeout
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proxy = AuthServiceProxy(url, **proxy_kwargs)
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proxy.url = url # store URL on proxy for info
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coverage_logfile = coverage.get_filename(
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COVERAGE_DIR, node_number) if COVERAGE_DIR else None
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return coverage.AuthServiceProxyWrapper(proxy, coverage_logfile)
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def p2p_port(n):
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return 11000 + n + os.getpid()%999
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def rpc_port(n):
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return 12000 + n + os.getpid()%999
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def check_json_precision():
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"""Make sure json library being used does not lose precision converting BTC values"""
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n = Decimal("20000000.00000003")
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satoshis = int(json.loads(json.dumps(float(n)))*1.0e8)
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if satoshis != 2000000000000003:
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raise RuntimeError("JSON encode/decode loses precision")
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def bytes_to_hex_str(byte_str):
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return hexlify(byte_str).decode('ascii')
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def hex_str_to_bytes(hex_str):
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return unhexlify(hex_str.encode('ascii'))
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def str_to_b64str(string):
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return b64encode(string.encode('utf-8')).decode('ascii')
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def sync_blocks(rpc_connections, wait=1):
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"""
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Wait until everybody has the same block count, and has notified
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all internal listeners of them
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"""
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while True:
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counts = [ x.getblockcount() for x in rpc_connections ]
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if counts == [ counts[0] ]*len(counts):
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break
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time.sleep(wait)
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# Now that the block counts are in sync, wait for the internal
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# notifications to finish
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while True:
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notified = [ x.getblockchaininfo()['fullyNotified'] for x in rpc_connections ]
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if notified == [ True ] * len(notified):
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break
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time.sleep(wait)
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def sync_mempools(rpc_connections, wait=1):
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"""
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Wait until everybody has the same transactions in their memory
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pools, and has notified all internal listeners of them
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"""
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while True:
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pool = set(rpc_connections[0].getrawmempool())
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num_match = 1
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for i in range(1, len(rpc_connections)):
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if set(rpc_connections[i].getrawmempool()) == pool:
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num_match = num_match+1
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if num_match == len(rpc_connections):
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break
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time.sleep(wait)
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# Now that the mempools are in sync, wait for the internal
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# notifications to finish
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while True:
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notified = [ x.getmempoolinfo()['fullyNotified'] for x in rpc_connections ]
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if notified == [ True ] * len(notified):
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break
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time.sleep(wait)
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bitcoind_processes = {}
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def initialize_datadir(dirname, n):
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datadir = os.path.join(dirname, "node"+str(n))
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if not os.path.isdir(datadir):
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os.makedirs(datadir)
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with open(os.path.join(datadir, "zcash.conf"), 'w') as f:
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f.write("regtest=1\n")
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f.write("showmetrics=0\n")
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f.write("rpcuser=rt\n")
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f.write("rpcpassword=rt\n")
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f.write("port="+str(p2p_port(n))+"\n")
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f.write("rpcport="+str(rpc_port(n))+"\n")
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f.write("listenonion=0\n")
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return datadir
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def rpc_url(i, rpchost=None):
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return "http://rt:rt@%s:%d" % (rpchost or '127.0.0.1', rpc_port(i))
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def wait_for_bitcoind_start(process, url, i):
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'''
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Wait for bitcoind to start. This means that RPC is accessible and fully initialized.
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Raise an exception if bitcoind exits during initialization.
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'''
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while True:
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if process.poll() is not None:
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raise Exception('bitcoind exited with status %i during initialization' % process.returncode)
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try:
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rpc = get_rpc_proxy(url, i)
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rpc.getblockcount()
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break # break out of loop on success
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except IOError as e:
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if e.errno != errno.ECONNREFUSED: # Port not yet open?
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raise # unknown IO error
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except JSONRPCException as e: # Initialization phase
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if e.error['code'] != -28: # RPC in warmup?
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raise # unkown JSON RPC exception
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time.sleep(0.25)
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def initialize_chain(test_dir):
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"""
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Create (or copy from cache) a 200-block-long chain and
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4 wallets.
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"""
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# Due to the consensus change fix for the timejacking attack, we need to
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# ensure that the cache is pretty fresh. Specifically, we need the median
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# time past of the chain tip of the cache to be no more than 90 minutes
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# behind the current local time, or else mined blocks will be rejected by
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# all nodes, halting the test. With Sapling active by default, this requires
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# the chain tip itself to be no more than 75 minutes behind the current
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# local time.
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#
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# We address this here, by regenerating the cache if it is more than 60
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# minutes old. This gives 15 minutes of slack initially that an RPC test has
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# to complete in, if it is started right at the oldest cache time. Within an
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# individual test, the first five calls to `generate` will each advance the
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# median time past of the chain tip by 2.5 minutes (with Sapling active by
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# default). Therefore, if the logic between the completion of any two
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# adjacent calls to `generate` within a test takes longer than 2.5 minutes,
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# the excess will subtract from the slack.
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if os.path.isdir(os.path.join("cache", "node0")):
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if os.stat("cache").st_mtime + (60 * 60) < time.time():
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print("initialize_chain(): Removing stale cache")
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shutil.rmtree("cache")
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if (not os.path.isdir(os.path.join("cache","node0"))
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or not os.path.isdir(os.path.join("cache","node1"))
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or not os.path.isdir(os.path.join("cache","node2"))
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or not os.path.isdir(os.path.join("cache","node3"))):
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#find and delete old cache directories if any exist
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for i in range(4):
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if os.path.isdir(os.path.join("cache","node"+str(i))):
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shutil.rmtree(os.path.join("cache","node"+str(i)))
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# Create cache directories, run bitcoinds:
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for i in range(4):
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datadir=initialize_datadir("cache", i)
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args = [ os.getenv("BITCOIND", "bitcoind"), "-keypool=1", "-datadir="+datadir, "-discover=0" ]
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args.extend([
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'-nuparams=5ba81b19:1', # Overwinter
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'-nuparams=76b809bb:1', # Sapling
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])
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if i > 0:
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args.append("-connect=127.0.0.1:"+str(p2p_port(0)))
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bitcoind_processes[i] = subprocess.Popen(args)
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if os.getenv("PYTHON_DEBUG", ""):
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print("initialize_chain: bitcoind started, waiting for RPC to come up")
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wait_for_bitcoind_start(bitcoind_processes[i], rpc_url(i), i)
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if os.getenv("PYTHON_DEBUG", ""):
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print("initialize_chain: RPC succesfully started")
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rpcs = []
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for i in range(4):
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try:
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rpcs.append(get_rpc_proxy(rpc_url(i), i))
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except:
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sys.stderr.write("Error connecting to "+rpc_url(i)+"\n")
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sys.exit(1)
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# Create a 200-block-long chain; each of the 4 nodes
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# gets 25 mature blocks and 25 immature.
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# Blocks are created with timestamps 2.5 minutes apart (matching the
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# chain defaulting above to Sapling active), starting 200 * 2.5 minutes
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# before the current time.
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block_time = int(time.time()) - (200 * PRE_BLOSSOM_BLOCK_TARGET_SPACING)
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for i in range(2):
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for peer in range(4):
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for j in range(25):
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set_node_times(rpcs, block_time)
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rpcs[peer].generate(1)
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block_time += PRE_BLOSSOM_BLOCK_TARGET_SPACING
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# Must sync before next peer starts generating blocks
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sync_blocks(rpcs)
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# Check that local time isn't going backwards
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assert_greater_than(time.time() + 1, block_time)
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# Shut them down, and clean up cache directories:
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stop_nodes(rpcs)
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wait_bitcoinds()
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for i in range(4):
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os.remove(log_filename("cache", i, "debug.log"))
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os.remove(log_filename("cache", i, "db.log"))
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os.remove(log_filename("cache", i, "peers.dat"))
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os.remove(log_filename("cache", i, "fee_estimates.dat"))
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for i in range(4):
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from_dir = os.path.join("cache", "node"+str(i))
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to_dir = os.path.join(test_dir, "node"+str(i))
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shutil.copytree(from_dir, to_dir)
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initialize_datadir(test_dir, i) # Overwrite port/rpcport in zcash.conf
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def initialize_chain_clean(test_dir, num_nodes):
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"""
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Create an empty blockchain and num_nodes wallets.
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Useful if a test case wants complete control over initialization.
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"""
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for i in range(num_nodes):
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initialize_datadir(test_dir, i)
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def _rpchost_to_args(rpchost):
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'''Convert optional IP:port spec to rpcconnect/rpcport args'''
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if rpchost is None:
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return []
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match = re.match('(\[[0-9a-fA-f:]+\]|[^:]+)(?::([0-9]+))?$', rpchost)
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if not match:
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raise ValueError('Invalid RPC host spec ' + rpchost)
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rpcconnect = match.group(1)
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rpcport = match.group(2)
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if rpcconnect.startswith('['): # remove IPv6 [...] wrapping
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rpcconnect = rpcconnect[1:-1]
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rv = ['-rpcconnect=' + rpcconnect]
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if rpcport:
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rv += ['-rpcport=' + rpcport]
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return rv
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def start_node(i, dirname, extra_args=None, rpchost=None, timewait=None, binary=None, stderr=None):
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"""
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Start a bitcoind and return RPC connection to it
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"""
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datadir = os.path.join(dirname, "node"+str(i))
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if binary is None:
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binary = os.getenv("BITCOIND", "bitcoind")
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args = [ binary, "-datadir="+datadir, "-keypool=1", "-discover=0", "-rest" ]
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args.extend([
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'-nuparams=5ba81b19:1', # Overwinter
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'-nuparams=76b809bb:1', # Sapling
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])
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if extra_args is not None: args.extend(extra_args)
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bitcoind_processes[i] = subprocess.Popen(args, stderr=stderr)
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if os.getenv("PYTHON_DEBUG", ""):
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print("start_node: bitcoind started, waiting for RPC to come up")
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url = rpc_url(i, rpchost)
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wait_for_bitcoind_start(bitcoind_processes[i], url, i)
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if os.getenv("PYTHON_DEBUG", ""):
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print("start_node: RPC succesfully started")
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proxy = get_rpc_proxy(url, i, timeout=timewait)
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if COVERAGE_DIR:
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coverage.write_all_rpc_commands(COVERAGE_DIR, proxy)
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return proxy
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def assert_start_raises_init_error(i, dirname, extra_args=None, expected_msg=None):
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with tempfile.SpooledTemporaryFile(max_size=2**16) as log_stderr:
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try:
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node = start_node(i, dirname, extra_args, stderr=log_stderr)
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stop_node(node, i)
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except Exception as e:
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assert 'bitcoind exited' in str(e) #node must have shutdown
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if expected_msg is not None:
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log_stderr.seek(0)
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stderr = log_stderr.read().decode('utf-8')
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if expected_msg not in stderr:
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raise AssertionError("Expected error \"" + expected_msg + "\" not found in:\n" + stderr)
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else:
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if expected_msg is None:
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assert_msg = "bitcoind should have exited with an error"
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else:
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assert_msg = "bitcoind should have exited with expected error " + expected_msg
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raise AssertionError(assert_msg)
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def start_nodes(num_nodes, dirname, extra_args=None, rpchost=None, binary=None):
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"""
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Start multiple bitcoinds, return RPC connections to them
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"""
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if extra_args is None: extra_args = [ None for i in range(num_nodes) ]
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if binary is None: binary = [ None for i in range(num_nodes) ]
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rpcs = []
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try:
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for i in range(num_nodes):
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rpcs.append(start_node(i, dirname, extra_args[i], rpchost, binary=binary[i]))
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except: # If one node failed to start, stop the others
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stop_nodes(rpcs)
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raise
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return rpcs
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def log_filename(dirname, n_node, logname):
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return os.path.join(dirname, "node"+str(n_node), "regtest", logname)
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def check_node(i):
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bitcoind_processes[i].poll()
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return bitcoind_processes[i].returncode
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def stop_node(node, i):
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node.stop()
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bitcoind_processes[i].wait()
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del bitcoind_processes[i]
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def stop_nodes(nodes):
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for node in nodes:
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node.stop()
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del nodes[:] # Emptying array closes connections as a side effect
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def set_node_times(nodes, t):
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for node in nodes:
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node.setmocktime(t)
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def wait_bitcoinds():
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# Wait for all bitcoinds to cleanly exit
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for bitcoind in list(bitcoind_processes.values()):
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bitcoind.wait()
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bitcoind_processes.clear()
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def connect_nodes(from_connection, node_num):
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ip_port = "127.0.0.1:"+str(p2p_port(node_num))
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from_connection.addnode(ip_port, "onetry")
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# poll until version handshake complete to avoid race conditions
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# with transaction relaying
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while any(peer['version'] == 0 for peer in from_connection.getpeerinfo()):
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time.sleep(0.1)
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def connect_nodes_bi(nodes, a, b):
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connect_nodes(nodes[a], b)
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connect_nodes(nodes[b], a)
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def find_output(node, txid, amount):
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"""
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Return index to output of txid with value amount
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Raises exception if there is none.
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"""
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txdata = node.getrawtransaction(txid, 1)
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for i in range(len(txdata["vout"])):
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if txdata["vout"][i]["value"] == amount:
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return i
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raise RuntimeError("find_output txid %s : %s not found"%(txid,str(amount)))
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def gather_inputs(from_node, amount_needed, confirmations_required=1):
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"""
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Return a random set of unspent txouts that are enough to pay amount_needed
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"""
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assert(confirmations_required >=0)
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utxo = from_node.listunspent(confirmations_required)
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random.shuffle(utxo)
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inputs = []
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total_in = Decimal("0.00000000")
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while total_in < amount_needed and len(utxo) > 0:
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t = utxo.pop()
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total_in += t["amount"]
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inputs.append({ "txid" : t["txid"], "vout" : t["vout"], "address" : t["address"] } )
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if total_in < amount_needed:
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raise RuntimeError("Insufficient funds: need %d, have %d"%(amount_needed, total_in))
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return (total_in, inputs)
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def make_change(from_node, amount_in, amount_out, fee):
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"""
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Create change output(s), return them
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"""
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outputs = {}
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amount = amount_out+fee
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change = amount_in - amount
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if change > amount*2:
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# Create an extra change output to break up big inputs
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change_address = from_node.getnewaddress()
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# Split change in two, being careful of rounding:
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outputs[change_address] = Decimal(change/2).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)
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change = amount_in - amount - outputs[change_address]
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if change > 0:
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outputs[from_node.getnewaddress()] = change
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return outputs
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def send_zeropri_transaction(from_node, to_node, amount, fee):
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"""
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Create&broadcast a zero-priority transaction.
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Returns (txid, hex-encoded-txdata)
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Ensures transaction is zero-priority by first creating a send-to-self,
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then using its output
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"""
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# Create a send-to-self with confirmed inputs:
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self_address = from_node.getnewaddress()
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(total_in, inputs) = gather_inputs(from_node, amount+fee*2)
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outputs = make_change(from_node, total_in, amount+fee, fee)
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outputs[self_address] = float(amount+fee)
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self_rawtx = from_node.createrawtransaction(inputs, outputs)
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self_signresult = from_node.signrawtransaction(self_rawtx)
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self_txid = from_node.sendrawtransaction(self_signresult["hex"], True)
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vout = find_output(from_node, self_txid, amount+fee)
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# Now immediately spend the output to create a 1-input, 1-output
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# zero-priority transaction:
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inputs = [ { "txid" : self_txid, "vout" : vout } ]
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outputs = { to_node.getnewaddress() : float(amount) }
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rawtx = from_node.createrawtransaction(inputs, outputs)
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signresult = from_node.signrawtransaction(rawtx)
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txid = from_node.sendrawtransaction(signresult["hex"], True)
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return (txid, signresult["hex"])
|
|
|
|
def random_zeropri_transaction(nodes, amount, min_fee, fee_increment, fee_variants):
|
|
"""
|
|
Create a random zero-priority transaction.
|
|
Returns (txid, hex-encoded-transaction-data, fee)
|
|
"""
|
|
from_node = random.choice(nodes)
|
|
to_node = random.choice(nodes)
|
|
fee = min_fee + fee_increment*random.randint(0,fee_variants)
|
|
(txid, txhex) = send_zeropri_transaction(from_node, to_node, amount, fee)
|
|
return (txid, txhex, fee)
|
|
|
|
def random_transaction(nodes, amount, min_fee, fee_increment, fee_variants):
|
|
"""
|
|
Create a random transaction.
|
|
Returns (txid, hex-encoded-transaction-data, fee)
|
|
"""
|
|
from_node = random.choice(nodes)
|
|
to_node = random.choice(nodes)
|
|
fee = min_fee + fee_increment*random.randint(0,fee_variants)
|
|
|
|
(total_in, inputs) = gather_inputs(from_node, amount+fee)
|
|
outputs = make_change(from_node, total_in, amount, fee)
|
|
outputs[to_node.getnewaddress()] = float(amount)
|
|
|
|
rawtx = from_node.createrawtransaction(inputs, outputs)
|
|
signresult = from_node.signrawtransaction(rawtx)
|
|
txid = from_node.sendrawtransaction(signresult["hex"], True)
|
|
|
|
return (txid, signresult["hex"], fee)
|
|
|
|
def assert_equal(expected, actual, message=""):
|
|
if expected != actual:
|
|
if message:
|
|
message = "; %s" % message
|
|
raise AssertionError("(left == right)%s\n left: <%s>\n right: <%s>" % (message, str(expected), str(actual)))
|
|
|
|
def assert_true(condition, message = ""):
|
|
if not condition:
|
|
raise AssertionError(message)
|
|
|
|
def assert_false(condition, message = ""):
|
|
assert_true(not condition, message)
|
|
|
|
def assert_greater_than(thing1, thing2):
|
|
if thing1 <= thing2:
|
|
raise AssertionError("%s <= %s"%(str(thing1),str(thing2)))
|
|
|
|
def assert_raises(exc, fun, *args, **kwds):
|
|
try:
|
|
fun(*args, **kwds)
|
|
except exc:
|
|
pass
|
|
except Exception as e:
|
|
raise AssertionError("Unexpected exception raised: "+type(e).__name__)
|
|
else:
|
|
raise AssertionError("No exception raised")
|
|
|
|
def fail(message=""):
|
|
raise AssertionError(message)
|
|
|
|
|
|
# Returns an async operation result
|
|
def wait_and_assert_operationid_status_result(node, myopid, in_status='success', in_errormsg=None, timeout=300):
|
|
print('waiting for async operation {}'.format(myopid))
|
|
result = None
|
|
for _ in range(1, timeout):
|
|
results = node.z_getoperationresult([myopid])
|
|
if len(results) > 0:
|
|
result = results[0]
|
|
break
|
|
time.sleep(1)
|
|
|
|
assert_true(result is not None, "timeout occured")
|
|
status = result['status']
|
|
|
|
debug = os.getenv("PYTHON_DEBUG", "")
|
|
if debug:
|
|
print('...returned status: {}'.format(status))
|
|
|
|
errormsg = None
|
|
if status == "failed":
|
|
errormsg = result['error']['message']
|
|
if debug:
|
|
print('...returned error: {}'.format(errormsg))
|
|
assert_equal(in_errormsg, errormsg)
|
|
|
|
assert_equal(in_status, status, "Operation returned mismatched status. Error Message: {}".format(errormsg))
|
|
|
|
return result
|
|
|
|
|
|
# Returns txid if operation was a success or None
|
|
def wait_and_assert_operationid_status(node, myopid, in_status='success', in_errormsg=None, timeout=300):
|
|
result = wait_and_assert_operationid_status_result(node, myopid, in_status, in_errormsg, timeout)
|
|
if result['status'] == "success":
|
|
return result['result']['txid']
|
|
else:
|
|
return None
|
|
|
|
# Find a coinbase address on the node, filtering by the number of UTXOs it has.
|
|
# If no filter is provided, returns the coinbase address on the node containing
|
|
# the greatest number of spendable UTXOs.
|
|
# The default cached chain has one address per coinbase output.
|
|
def get_coinbase_address(node, expected_utxos=None):
|
|
addrs = [utxo['address'] for utxo in node.listunspent() if utxo['generated']]
|
|
assert(len(set(addrs)) > 0)
|
|
|
|
if expected_utxos is None:
|
|
addrs = [(addrs.count(a), a) for a in set(addrs)]
|
|
return sorted(addrs, reverse=True)[0][1]
|
|
|
|
addrs = [a for a in set(addrs) if addrs.count(a) == expected_utxos]
|
|
assert(len(addrs) > 0)
|
|
return addrs[0]
|
|
|
|
def check_node_log(self, node_number, line_to_check, stop_node = True):
|
|
print("Checking node " + str(node_number) + " logs")
|
|
if stop_node:
|
|
self.nodes[node_number].stop()
|
|
bitcoind_processes[node_number].wait()
|
|
logpath = self.options.tmpdir + "/node" + str(node_number) + "/regtest/debug.log"
|
|
with open(logpath, "r") as myfile:
|
|
logdata = myfile.readlines()
|
|
for (n, logline) in enumerate(logdata):
|
|
if line_to_check in logline:
|
|
return n
|
|
raise AssertionError(repr(line_to_check) + " not found")
|