def main():
loop = asyncio.get_event_loop()
# because a KeyboardInterrupt is so violent it can shutdown the DB in an unpredictable state.
loop.add_signal_handler(SIGINT, system_exit)
main_task = loop.create_task(setup_and_start(loop))
try:
loop.run_forever()
except SystemExit:
p2p = NetworkService()
loop.run_until_complete(p2p.shutdown())
loop.run_until_complete(shutdown())
loop.run_until_complete(loop.shutdown_asyncgens())
loop.stop()
finally:
loop.close()
logger.info("Closing databases...")
NotificationDB.close()
Blockchain.Default().Dispose()
wallet = main_task.result()
if wallet:
wallet.Close()
async def setup_and_start(loop):
# Use TestNet
settings.setup_privnet()
# Setup the blockchain
blockchain = LevelDBBlockchain(settings.chain_leveldb_path)
Blockchain.RegisterBlockchain(blockchain)
p2p = NetworkService()
loop.create_task(p2p.start())
bg_task = loop.create_task(custom_background_code())
# Disable smart contract events for external smart contracts
settings.set_log_smart_contract_events(False)
app = web.Application()
app.add_routes([
web.route('*', '/', home_route),
web.get("/echo-get/{msg}", echo_msg),
web.post("/echo-post/", echo_post),
])
runner = web.AppRunner(app)
await runner.setup()
site = web.TCPSite(runner, "0.0.0.0", API_PORT)
await site.start()
# Run all the things (blocking call)
logger.info("Everything setup and running. Waiting for events...")
return site
def main():
# Use TestNet
settings.setup_testnet()
# Setup the blockchain
blockchain = LevelDBBlockchain(settings.chain_leveldb_path)
Blockchain.RegisterBlockchain(blockchain)
loop = asyncio.get_event_loop()
# Start a reoccurring task with custom code
loop.create_task(custom_background_code())
p2p = NetworkService()
loop.create_task(p2p.start())
# block from here on
loop.run_forever()
async def setup_and_start(loop):
# Use TestNet
settings.setup_testnet()
# Setup the blockchain
blockchain = LevelDBBlockchain(settings.chain_leveldb_path)
Blockchain.RegisterBlockchain(blockchain)
p2p = NetworkService()
loop.create_task(p2p.start())
bg_task = loop.create_task(custom_background_code())
# Disable smart contract events for external smart contracts
settings.set_log_smart_contract_events(False)
# Run all the things (blocking call)
logger.info("Everything setup and running. Waiting for events...")
return bg_task
def run(self):
# bl: changing to 15 so that we can get connections with a high number to improve transaction relayability
settings.set_max_peers(15)
loop = asyncio.get_event_loop()
# because a KeyboardInterrupt is so violent it can shutdown the DB in an unpredictable state.
loop.add_signal_handler(SIGINT, quit)
loop.add_signal_handler(SIGHUP, quit)
loop.add_signal_handler(SIGTERM, quit)
# Disable smart contract events for external smart contracts
settings.set_log_smart_contract_events(False)
# Instantiate the blockchain and subscribe to notifications
blockchain = Blockchain(
DBFactory.getBlockchainDB(settings.chain_leveldb_path))
Blockchain.RegisterBlockchain(blockchain)
# Try to set up a notification db
if NotificationDB.instance():
NotificationDB.instance().start()
# if the wallet was set up (by setting a path and loading the password), then open it!
if self.wallet_path:
self.wallet_open()
# invoke any pre-start action that needs to occur before we start the loop.
# optional for subclasses to implement.
self.pre_start()
blockchain_main_task = loop.create_task(self.run_loop())
p2p = NetworkService()
loop.create_task(p2p.start())
async def shutdown():
all_tasks = asyncio.all_tasks()
for task in all_tasks:
task.cancel()
with suppress(asyncio.CancelledError):
await task
try:
loop.run_forever()
except (SystemExit, KeyboardInterrupt):
with suppress((SystemExit, Exception)):
blockchain_main_task.exception()
loop.run_until_complete(p2p.shutdown())
loop.run_until_complete(shutdown())
loop.run_until_complete(loop.shutdown_asyncgens())
loop.stop()
finally:
loop.close()
# Run things
if self.wallet_path:
logger.info("Closing wallet file %s" % self.wallet_path)
asyncio.run(self.wallet_close())
# After the reactor is stopped, gracefully shutdown the database.
logger.info("Closing databases...")
NotificationDB.close()
Blockchain.Default().Dispose()
async def setup_and_start(loop):
parser = argparse.ArgumentParser()
# Network options
group_network_container = parser.add_argument_group(
title="Network options")
group_network = group_network_container.add_mutually_exclusive_group(
required=True)
group_network.add_argument("--mainnet",
action="store_true",
default=False,
help="Use MainNet")
group_network.add_argument("--testnet",
action="store_true",
default=False,
help="Use TestNet")
group_network.add_argument("--privnet",
action="store_true",
default=False,
help="Use PrivNet")
group_network.add_argument("--coznet",
action="store_true",
default=False,
help="Use CozNet")
group_network.add_argument("--config",
action="store",
help="Use a specific config file")
# Ports for RPC and REST api
group_modes = parser.add_argument_group(title="Mode(s)")
group_modes.add_argument(
"--port-rpc",
type=int,
help="port to use for the json-rpc api (eg. 10332)")
group_modes.add_argument("--port-rest",
type=int,
help="port to use for the rest api (eg. 80)")
# Advanced logging setup
group_logging = parser.add_argument_group(title="Logging options")
group_logging.add_argument("--logfile",
action="store",
type=str,
help="Logfile")
group_logging.add_argument(
"--syslog",
action="store_true",
help=
"Log to syslog instead of to log file ('user' is the default facility)"
)
group_logging.add_argument(
"--syslog-local",
action="store",
type=int,
choices=range(0, 7 + 1),
metavar="[0-7]",
help=
"Log to a local syslog facility instead of 'user'. Value must be between 0 and 7 (e.g. 0 for 'local0')."
)
group_logging.add_argument("--disable-stderr",
action="store_true",
help="Disable stderr logger")
# Where to store stuff
parser.add_argument("--datadir",
action="store",
help="Absolute path to use for database directories")
# peers
parser.add_argument("--minpeers",
action="store",
type=int,
choices=range(1, 10 + 1),
metavar="[1-10]",
help="Min peers to use for P2P Joining")
parser.add_argument("--maxpeers",
action="store",
type=int,
choices=range(1, 10 + 1),
metavar="[1-10]",
help="Max peers to use for P2P Joining")
# If a wallet should be opened
parser.add_argument(
"--wallet",
action="store",
help=
"Open wallet. Will allow you to use methods that require an open wallet"
)
# host
parser.add_argument("--host",
action="store",
type=str,
help="Hostname ( for example 127.0.0.1)",
default="0.0.0.0")
# Now parse
args = parser.parse_args()
# print(args)
if not args.port_rpc and not args.port_rest:
print("Error: specify at least one of --port-rpc / --port-rest")
parser.print_help()
raise SystemExit
if args.port_rpc == args.port_rest:
print("Error: --port-rpc and --port-rest cannot be the same")
parser.print_help()
raise SystemExit
if args.logfile and (args.syslog or args.syslog_local):
print("Error: Cannot only use logfile or syslog at once")
parser.print_help()
raise SystemExit
# Setting the datadir must come before setting the network, else the wrong path is checked at net setup.
if args.datadir:
settings.set_data_dir(args.datadir)
# Network configuration depending on command line arguments. By default, the testnet settings are already loaded.
if args.config:
settings.setup(args.config)
elif args.mainnet:
settings.setup_mainnet()
elif args.testnet:
settings.setup_testnet()
elif args.privnet:
settings.setup_privnet()
elif args.coznet:
settings.setup_coznet()
def set_min_peers(num_peers) -> bool:
try:
settings.set_min_peers(num_peers)
print("Minpeers set to ", num_peers)
return True
except ValueError:
print("Please supply a positive integer for minpeers")
return False
def set_max_peers(num_peers) -> bool:
try:
settings.set_max_peers(num_peers)
print("Maxpeers set to ", num_peers)
return True
except ValueError:
print("Please supply a positive integer for maxpeers")
return False
minpeers = args.minpeers
maxpeers = args.maxpeers
if minpeers and maxpeers:
if minpeers > maxpeers:
print("minpeers setting cannot be bigger than maxpeers setting")
return
if not set_min_peers(minpeers) or not set_max_peers(maxpeers):
return
elif minpeers:
if not set_min_peers(minpeers):
return
if minpeers > settings.CONNECTED_PEER_MAX:
if not set_max_peers(minpeers):
return
elif maxpeers:
if not set_max_peers(maxpeers):
return
if maxpeers < settings.CONNECTED_PEER_MIN:
if not set_min_peers(maxpeers):
return
if args.syslog or args.syslog_local is not None:
# Setup the syslog facility
if args.syslog_local is not None:
print("Logging to syslog local%s facility" % args.syslog_local)
syslog_facility = SysLogHandler.LOG_LOCAL0 + args.syslog_local
else:
print("Logging to syslog user facility")
syslog_facility = SysLogHandler.LOG_USER
# Setup logzero to only use the syslog handler
logzero.syslog(facility=syslog_facility)
else:
# Setup file logging
if args.logfile:
logfile = os.path.abspath(args.logfile)
if args.disable_stderr:
print("Logging to logfile: %s" % logfile)
else:
print("Logging to stderr and logfile: %s" % logfile)
logzero.logfile(logfile,
maxBytes=LOGFILE_MAX_BYTES,
backupCount=LOGFILE_BACKUP_COUNT,
disableStderrLogger=args.disable_stderr)
else:
print("Logging to stdout and stderr")
if args.wallet:
if not os.path.exists(args.wallet):
print("Wallet file not found")
return
passwd = os.environ.get('NEO_PYTHON_JSONRPC_WALLET_PASSWORD', None)
if not passwd:
try:
passwd = prompt("[password]> ", is_password=True)
except KeyboardInterrupt:
print("Wallet opening cancelled")
return
password_key = to_aes_key(passwd)
try:
wallet = UserWallet.Open(args.wallet, password_key)
asyncio.create_task(
wallet.sync_wallet(start_block=wallet._current_height))
except Exception as e:
print(f"Could not open wallet {e}")
return
else:
wallet = None
# Disable logging smart contract events
settings.set_log_smart_contract_events(False)
# Write a PID file to easily quit the service
write_pid_file()
# Instantiate the blockchain and subscribe to notifications
blockchain = Blockchain(getBlockchainDB())
Blockchain.RegisterBlockchain(blockchain)
p2p = NetworkService()
p2p_task = loop.create_task(p2p.start())
loop.create_task(custom_background_code())
NotificationDB.instance().start()
if args.port_rpc:
logger.info("Starting json-rpc api server on http://%s:%s" %
(args.host, args.port_rpc))
try:
rpc_class = load_class_from_path(settings.RPC_SERVER)
except ValueError as err:
logger.error(err)
sys.exit()
api_server_rpc = rpc_class(wallet=wallet)
runner = web.AppRunner(api_server_rpc.app)
await runner.setup()
site = web.TCPSite(runner, args.host, args.port_rpc)
await site.start()
if args.port_rest:
logger.info("Starting REST api server on http://%s:%s" %
(args.host, args.port_rest))
try:
rest_api = load_class_from_path(settings.REST_SERVER)
except ValueError as err:
logger.error(err)
sys.exit()
api_server_rest = rest_api()
runner = web.AppRunner(api_server_rest.app)
await runner.setup()
site = web.TCPSite(runner, args.host, args.port_rpc)
await site.start()
return wallet
def main():
parser = argparse.ArgumentParser()
# Network group
group = parser.add_mutually_exclusive_group()
group.add_argument("-m",
"--mainnet",
action="store_true",
default=False,
help="Use MainNet instead of the default TestNet")
group.add_argument(
"-p",
"--privnet",
nargs="?",
metavar="host",
const=True,
default=False,
help=
"Use a private net instead of the default TestNet, optionally using a custom host (default: 127.0.0.1)"
)
group.add_argument(
"--coznet",
action="store_true",
default=False,
help="Use the CoZ network instead of the default TestNet")
group.add_argument(
"-u",
"--unittest",
nargs="?",
metavar="host",
const=True,
default=False,
help=
"Use a private net instead of the default TestNet, optionally using a custom host (default: 127.0.0.1)"
)
group.add_argument("-c",
"--config",
action="store",
help="Use a specific config file")
# Theme
parser.add_argument(
"-t",
"--set-default-theme",
dest="theme",
choices=["dark", "light"],
help=
"Set the default theme to be loaded from the config file. Default: 'dark'"
)
# Verbose
parser.add_argument("-v",
"--verbose",
action="store_true",
default=False,
help="Show smart-contract events by default")
# Where to store stuff
parser.add_argument("--datadir",
action="store",
help="Absolute path to use for database directories")
# peers
parser.add_argument("--minpeers",
action="store",
type=int,
choices=range(1, 10 + 1),
metavar="[1-10]",
help="Min peers to use for P2P Joining")
parser.add_argument("--maxpeers",
action="store",
type=int,
default=5,
choices=range(1, 10 + 1),
metavar="[1-10]",
help="Max peers to use for P2P Joining")
# Show the neo-python version
parser.add_argument(
"--version",
action="version",
version="neo-python v{version}".format(version=__version__))
args = parser.parse_args()
# Setting the datadir must come before setting the network, else the wrong path is checked at net setup.
if args.datadir:
settings.set_data_dir(args.datadir)
# Setup depending on command line arguments. By default, the testnet settings are already loaded.
if args.config:
settings.setup(args.config)
elif args.mainnet:
settings.setup_mainnet()
elif args.privnet:
try:
settings.setup_privnet(args.privnet)
except PrivnetConnectionError as e:
logger.error(str(e))
return
elif args.coznet:
settings.setup_coznet()
elif args.unittest:
settings.setup_unittest_net()
# Logfile settings & setup
logfile_fn = os.path.join(settings.DATA_DIR_PATH, 'prompt.log')
logfile_max_bytes = 5e7 # 50 MB
logfile_backup_count = 3 # 3 logfiles history
settings.set_logfile(logfile_fn, logfile_max_bytes, logfile_backup_count)
if args.theme:
preferences.set_theme(args.theme)
if args.verbose:
settings.set_log_smart_contract_events(True)
def set_min_peers(num_peers) -> bool:
try:
settings.set_min_peers(num_peers)
print("Minpeers set to ", num_peers)
return True
except ValueError:
print("Please supply a positive integer for minpeers")
return False
def set_max_peers(num_peers) -> bool:
try:
settings.set_max_peers(num_peers)
print("Maxpeers set to ", num_peers)
return True
except ValueError:
print("Please supply a positive integer for maxpeers")
return False
minpeers = args.minpeers
maxpeers = args.maxpeers
if minpeers and maxpeers:
if minpeers > maxpeers:
print("minpeers setting cannot be bigger than maxpeers setting")
return
if not set_min_peers(minpeers) or not set_max_peers(maxpeers):
return
elif minpeers:
if not set_min_peers(minpeers):
return
if minpeers > settings.CONNECTED_PEER_MAX:
if not set_max_peers(minpeers):
return
elif maxpeers:
if not set_max_peers(maxpeers):
return
if maxpeers < settings.CONNECTED_PEER_MIN:
if not set_min_peers(maxpeers):
return
loop = asyncio.get_event_loop()
# put prompt_toolkit on top of asyncio to avoid blocking
use_asyncio_event_loop()
# Instantiate the blockchain and subscribe to notifications
blockchain = Blockchain(
DBFactory.getBlockchainDB(settings.chain_leveldb_path))
Blockchain.RegisterBlockchain(blockchain)
# Try to set up a notification db
if NotificationDB.instance():
NotificationDB.instance().start()
# Start the prompt interface
fn_prompt_history = os.path.join(settings.DATA_DIR_PATH,
'.prompt.py.history')
cli = PromptInterface(fn_prompt_history)
cli_task = loop.create_task(cli.run())
p2p = NetworkService()
loop.create_task(p2p.start())
async def shutdown():
all_tasks = asyncio.all_tasks()
for task in all_tasks:
task.cancel()
with suppress(asyncio.CancelledError):
await task
# prompt_toolkit hack for not cleaning up see: https://github.com/prompt-toolkit/python-prompt-toolkit/issues/787
old_attrs = termios.tcgetattr(sys.stdin)
try:
loop.run_forever()
except SystemExit:
pass
finally:
with suppress(asyncio.InvalidStateError):
app = prompt_toolkit_get_app()
if app.is_running:
app.exit()
with suppress((SystemExit, Exception)):
cli_task.exception()
loop.run_until_complete(p2p.shutdown())
loop.run_until_complete(shutdown())
loop.run_until_complete(loop.shutdown_asyncgens())
loop.stop()
loop.close()
# Run things
# After the reactor is stopped, gracefully shutdown the database.
NotificationDB.close()
Blockchain.Default().Dispose()
# clean up prompt_toolkit mess, see above
termios.tcsetattr(sys.stdin, termios.TCSANOW, old_attrs)