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#!/usr/bin/env python3
# Copyright (c) 2014-2016 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test the -alertnotify option."""
import os
import time
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
class ForkNotifyTest(BitcoinTestFramework):
def __init__(self):
super().__init__()
self.num_nodes = 2
self.setup_clean_chain = False
alert_filename = None # Set by setup_network
def setup_network(self):
self.nodes = []
self.alert_filename = os.path.join(self.options.tmpdir, "alert.txt")
with open(self.alert_filename, 'w', encoding='utf8'):
pass # Just open then close to create zero-length file
self.nodes.append(start_node(0, self.options.tmpdir,
["-blockversion=2", "-alertnotify=echo %s >> \"" + self.alert_filename + "\""]))
# Node1 mines block.version=211 blocks
self.nodes.append(start_node(1, self.options.tmpdir,
["-blockversion=211"]))
connect_nodes(self.nodes[1], 0)
self.is_network_split = False
self.sync_all()
def run_test(self):
# Mine 51 up-version blocks
self.nodes[1].generate(51)
self.sync_all()
# -alertnotify should trigger on the 51'st,
# but mine and sync another to give
# -alertnotify time to write
self.nodes[1].generate(1)
self.sync_all()
# Give bitcoind 10 seconds to write the alert notification
timeout = 10.0
while timeout > 0:
if os.path.exists(self.alert_filename) and os.path.getsize(self.alert_filename):
break
time.sleep(0.1)
timeout -= 0.1
else:
assert False, "-alertnotify did not warn of up-version blocks"
with open(self.alert_filename, 'r', encoding='utf8') as f:
alert_text = f.read()
# Mine more up-version blocks, should not get more alerts:
self.nodes[1].generate(1)
self.sync_all()
self.nodes[1].generate(1)
self.sync_all()
with open(self.alert_filename, 'r', encoding='utf8') as f:
alert_text2 = f.read()
if alert_text != alert_text2:
raise AssertionError("-alertnotify excessive warning of up-version blocks")
if __name__ == '__main__':
ForkNotifyTest().main()
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