diff --git a/test/functional/test_framework/test_node.py b/test/functional/test_framework/test_node.py
index 90a81c993..9654a520f 100755
--- a/test/functional/test_framework/test_node.py
+++ b/test/functional/test_framework/test_node.py
@@ -1,218 +1,219 @@
#!/usr/bin/env python3
# Copyright (c) 2017 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Class for bitcoind node under test"""
import decimal
import errno
import http.client
import json
import logging
import os
import subprocess
import time
from .mininode import COIN, ToHex, FromHex, CTransaction
from .util import (
assert_equal,
get_rpc_proxy,
rpc_url,
wait_until,
)
from .authproxy import JSONRPCException
BITCOIND_PROC_WAIT_TIMEOUT = 60
class TestNode():
"""A class for representing a bitcoind node under test.
This class contains:
- state about the node (whether it's running, etc)
- a Python subprocess.Popen object representing the running process
- an RPC connection to the node
To make things easier for the test writer, a bit of magic is happening under the covers.
Any unrecognised messages will be dispatched to the RPC connection."""
def __init__(self, i, dirname, extra_args, rpchost, timewait, binary, stderr, mocktime, coverage_dir):
self.index = i
self.datadir = os.path.join(dirname, "node" + str(i))
self.rpchost = rpchost
if timewait:
self.rpc_timeout = timewait
else:
# Wait for up to 60 seconds for the RPC server to respond
self.rpc_timeout = 60
if binary is None:
self.binary = os.getenv("BITCOIND", "bitcoind")
else:
self.binary = binary
self.stderr = stderr
self.coverage_dir = coverage_dir
# Most callers will just need to add extra args to the standard list below. For those callers that need more flexibity, they can just set the args property directly.
self.extra_args = extra_args
self.args = [self.binary, "-datadir=" + self.datadir, "-server", "-keypool=1", "-discover=0", "-rest", "-logtimemicros",
"-debug", "-debugexclude=libevent", "-debugexclude=leveldb", "-mocktime=" + str(mocktime), "-uacomment=testnode%d" % i]
self.cli = TestNodeCLI(
os.getenv("BITCOINCLI", "bitcoin-cli"), self.datadir)
self.running = False
self.process = None
self.rpc_connected = False
self.rpc = None
self.url = None
self.relay_fee_cache = None
self.log = logging.getLogger('TestFramework.node%d' % i)
def __getattr__(self, *args, **kwargs):
"""Dispatches any unrecognised messages to the RPC connection."""
- assert self.rpc_connected and self.rpc is not None, "Error: no RPC connection"
+ assert self.rpc is not None, "Error: RPC not initialized"
+ assert self.rpc_connected, "Error: No RPC connection"
return self.rpc.__getattr__(*args, **kwargs)
def start(self, extra_args=None, stderr=None):
"""Start the node."""
if extra_args is None:
extra_args = self.extra_args
if stderr is None:
stderr = self.stderr
self.process = subprocess.Popen(self.args + extra_args, stderr=stderr)
self.running = True
self.log.debug("bitcoind started, waiting for RPC to come up")
def wait_for_rpc_connection(self):
"""Sets up an RPC connection to the bitcoind process. Returns False if unable to connect."""
# Poll at a rate of four times per second
poll_per_s = 4
for _ in range(poll_per_s * self.rpc_timeout):
assert self.process.poll(
) is None, "bitcoind exited with status %i during initialization" % self.process.returncode
try:
self.rpc = get_rpc_proxy(rpc_url(self.datadir, self.index, self.rpchost),
self.index, timeout=self.rpc_timeout, coveragedir=self.coverage_dir)
self.rpc.getblockcount()
# If the call to getblockcount() succeeds then the RPC connection is up
self.rpc_connected = True
self.url = self.rpc.url
self.log.debug("RPC successfully started")
return
except IOError as e:
if e.errno != errno.ECONNREFUSED: # Port not yet open?
raise # unknown IO error
except JSONRPCException as e: # Initialization phase
if e.error['code'] != -28: # RPC in warmup?
raise # unknown JSON RPC exception
except ValueError as e: # cookie file not found and no rpcuser or rpcassword. bitcoind still starting
if "No RPC credentials" not in str(e):
raise
time.sleep(1.0 / poll_per_s)
raise AssertionError("Unable to connect to bitcoind")
def get_wallet_rpc(self, wallet_name):
assert self.rpc_connected
assert self.rpc
wallet_path = "wallet/%s" % wallet_name
return self.rpc / wallet_path
def stop_node(self):
"""Stop the node."""
if not self.running:
return
self.log.debug("Stopping node")
try:
self.stop()
except http.client.CannotSendRequest:
self.log.exception("Unable to stop node.")
def is_node_stopped(self):
"""Checks whether the node has stopped.
Returns True if the node has stopped. False otherwise.
This method is responsible for freeing resources (self.process)."""
if not self.running:
return True
return_code = self.process.poll()
if return_code is None:
return False
# process has stopped. Assert that it didn't return an error code.
assert_equal(return_code, 0)
self.running = False
self.process = None
self.rpc_connected = False
self.rpc = None
self.log.debug("Node stopped")
return True
def wait_until_stopped(self, timeout=BITCOIND_PROC_WAIT_TIMEOUT):
wait_until(self.is_node_stopped, timeout=timeout)
def node_encrypt_wallet(self, passphrase):
""""Encrypts the wallet.
This causes bitcoind to shutdown, so this method takes
care of cleaning up resources."""
self.encryptwallet(passphrase)
self.wait_until_stopped()
def relay_fee(self, cached=True):
if not self.relay_fee_cache or not cached:
self.relay_fee_cache = self.getnetworkinfo()["relayfee"]
return self.relay_fee_cache
def calculate_fee(self, tx):
# Relay fee is in satoshis per KB. Thus the 1000, and the COIN added
# to get back to an amount of satoshis.
return int(self.relay_fee() / 1000 * len(ToHex(tx)) * COIN)
def calculate_fee_from_txid(self, txid):
ctx = FromHex(CTransaction(), self.getrawtransaction(txid))
return self.calculate_fee(ctx)
class TestNodeCLI():
"""Interface to bitcoin-cli for an individual node"""
def __init__(self, binary, datadir):
self.args = []
self.binary = binary
self.datadir = datadir
self.input = None
def __call__(self, *args, input=None):
# TestNodeCLI is callable with bitcoin-cli command-line args
self.args = [str(arg) for arg in args]
self.input = input
return self
def __getattr__(self, command):
def dispatcher(*args, **kwargs):
return self.send_cli(command, *args, **kwargs)
return dispatcher
def send_cli(self, command, *args, **kwargs):
"""Run bitcoin-cli command. Deserializes returned string as python object."""
pos_args = [str(arg) for arg in args]
named_args = [str(key) + "=" + str(value)
for (key, value) in kwargs.items()]
assert not (
pos_args and named_args), "Cannot use positional arguments and named arguments in the same bitcoin-cli call"
p_args = [self.binary, "-datadir=" + self.datadir] + self.args
if named_args:
p_args += ["-named"]
p_args += [command] + pos_args + named_args
process = subprocess.Popen(p_args, stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
cli_stdout, cli_stderr = process.communicate(input=self.input)
returncode = process.poll()
if returncode:
# Ignore cli_stdout, raise with cli_stderr
raise subprocess.CalledProcessError(
returncode, self.binary, output=cli_stderr)
return json.loads(cli_stdout, parse_float=decimal.Decimal)