133 lines
4.2 KiB
Python
133 lines
4.2 KiB
Python
import syslog
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import sys
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import time
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import socket
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import signal
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import os
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import logging
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import stat
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import argparse
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import uuid
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# external imports
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import confini
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from xdg.BaseDirectory import (
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load_first_config,
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get_runtime_dir,
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)
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from hexathon import strip_0x
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from chainlib.chain import ChainSpec
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# local imports
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from chainqueue.sql.backend import SQLBackend
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from chainqueue.db import dsn_from_config
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from chainqueue.adapters.eth import EthAdapter
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logging.basicConfig(level=logging.WARNING)
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logg = logging.getLogger()
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default_config_dir = load_first_config('chainqueue')
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config_dir = os.environ.get('CONFINI_DIR', default_config_dir)
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runtime_dir = os.path.join(get_runtime_dir(), 'chainqueue')
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argparser = argparse.ArgumentParser('chainqueue transaction submission and trigger server')
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argparser.add_argument('-c', '--config', dest='c', type=str, default=config_dir, help='configuration directory')
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argparser.add_argument('--runtime-dir', dest='runtime_dir', type=str, default=runtime_dir, help='runtime directory')
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argparser.add_argument('--session-id', dest='session_id', type=str, default=str(uuid.uuid4()), help='session id to use for session')
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argparser.add_argument('-v', action='store_true', help='be verbose')
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argparser.add_argument('-vv', action='store_true', help='be very verbose')
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args = argparser.parse_args(sys.argv[1:])
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if args.vv:
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logg.setLevel(logging.DEBUG)
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elif args.v:
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logg.setLevel(logging.INFO)
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config = confini.Config(args.c)
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config.process()
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args_override = {
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'SESSION_RUNTIME_DIR': getattr(args, 'runtime_dir'),
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}
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config.dict_override(args_override, 'cli args')
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config.add(getattr(args, 'session_id'), '_SESSION_ID', True)
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if not config.get('SESSION_SOCKET_PATH'):
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socket_path = os.path.join(config.get('SESSION_RUNTIME_DIR'), config.get('_SESSION_ID'), 'chainqueue.sock')
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config.add(socket_path, 'SESSION_SOCKET_PATH', True)
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logg.debug('config loaded:\n{}'.format(config))
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class SessionController:
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def __init__(self, config):
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self.dead = False
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os.makedirs(os.path.dirname(config.get('SESSION_SOCKET_PATH')), exist_ok=True)
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try:
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os.unlink(config.get('SESSION_SOCKET_PATH'))
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except FileNotFoundError:
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pass
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self.srv = socket.socket(family=socket.AF_UNIX, type=socket.SOCK_STREAM)
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self.srv.bind(config.get('SESSION_SOCKET_PATH'))
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self.srv.listen(2)
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self.srv.settimeout(1.0)
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def shutdown(self, signo, frame):
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if self.dead:
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return
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self.dead = True
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if signo != None:
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syslog.syslog('closing on {}'.format(signo))
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else:
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syslog.syslog('explicit shutdown')
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sockname = self.srv.getsockname()
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self.srv.close()
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try:
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os.unlink(sockname)
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except FileNotFoundError:
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logg.warning('socket file {} already gone'.format(sockname))
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def get_connection(self):
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return self.srv.accept()
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ctrl = SessionController(config)
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signal.signal(signal.SIGINT, ctrl.shutdown)
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signal.signal(signal.SIGTERM, ctrl.shutdown)
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dsn = dsn_from_config(config)
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backend = SQLBackend(dsn, debug=config.true('DATABASE_DEBUG'))
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adapter = EthAdapter(backend)
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chain_spec = ChainSpec.from_chain_str('evm:mainnet:1')
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if __name__ == '__main__':
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while True:
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srvs = None
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try:
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(srvs, srvs_addr) = ctrl.get_connection()
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except OSError as e:
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try:
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fi = os.stat(config.get('SESSION_SOCKET_PATH'))
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except FileNotFoundError:
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logg.error('socket is gone')
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break
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if not stat.S_ISSOCK(fi.st_mode):
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logg.error('entity on socket path is not a socket')
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break
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if srvs == None:
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txs = adapter.process(chain_spec)
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for k in txs.keys():
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logg.debug('txs {} {}'.format(k, txs[k]))
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continue
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srvs.setblocking(False)
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data_in = srvs.recv(1024)
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data_in_str = data_in.decode('utf-8')
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data = bytes.fromhex(strip_0x(data_in_str))
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r = adapter.add(chain_spec, data)
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srvs.send(r.to_bytes(4, byteorder='big'))
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ctrl.shutdown(None, None)
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