cic-stack/apps/cic-eth/cic_eth/runnable/daemons/dispatcher.py

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# standard imports
import os
import sys
import logging
import time
import argparse
import sys
import re
import datetime
# third-party imports
import confini
import celery
import web3
from web3 import HTTPProvider, WebsocketProvider
from cic_registry import CICRegistry
from cic_registry.chain import ChainSpec
# local imports
import cic_eth
from cic_eth.eth import RpcClient
from cic_eth.db import SessionBase
from cic_eth.db.enum import StatusEnum
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from cic_eth.db.enum import StatusBits
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from cic_eth.db.enum import LockEnum
from cic_eth.db import dsn_from_config
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from cic_eth.queue.tx import (
get_upcoming_tx,
set_dequeue,
)
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from cic_eth.admin.ctrl import lock_send
from cic_eth.sync.error import LoopDone
from cic_eth.eth.tx import send as task_tx_send
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from cic_eth.error import (
PermanentTxError,
TemporaryTxError,
NotLocalTxError,
)
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from cic_eth.eth.util import unpack_signed_raw_tx_hex
logging.basicConfig(level=logging.WARNING)
logg = logging.getLogger()
logging.getLogger('websockets.protocol').setLevel(logging.CRITICAL)
logging.getLogger('web3.RequestManager').setLevel(logging.CRITICAL)
logging.getLogger('web3.providers.WebsocketProvider').setLevel(logging.CRITICAL)
logging.getLogger('web3.providers.HTTPProvider').setLevel(logging.CRITICAL)
config_dir = os.path.join('/usr/local/etc/cic-eth')
argparser = argparse.ArgumentParser(description='daemon that monitors transactions in new blocks')
argparser.add_argument('-c', type=str, default=config_dir, help='config root to use')
argparser.add_argument('--env-prefix', default=os.environ.get('CONFINI_ENV_PREFIX'), dest='env_prefix', type=str, help='environment prefix for variables to overwrite configuration')
argparser.add_argument('-q', type=str, default='cic-eth', help='celery queue to submit transaction tasks to')
argparser.add_argument('-v', help='be verbose', action='store_true')
argparser.add_argument('-vv', help='be more verbose', action='store_true')
args = argparser.parse_args(sys.argv[1:])
if args.v == True:
logging.getLogger().setLevel(logging.INFO)
elif args.vv == True:
logging.getLogger().setLevel(logging.DEBUG)
config_dir = os.path.join(args.c)
os.makedirs(config_dir, 0o777, True)
config = confini.Config(config_dir, args.env_prefix)
config.process()
# override args
config.censor('PASSWORD', 'DATABASE')
config.censor('PASSWORD', 'SSL')
logg.debug('config loaded from {}:\n{}'.format(config_dir, config))
app = celery.Celery(backend=config.get('CELERY_RESULT_URL'), broker=config.get('CELERY_BROKER_URL'))
queue = args.q
dsn = dsn_from_config(config)
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SessionBase.connect(dsn, debug=config.true('DATABASE_DEBUG'))
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re_websocket = re.compile('^wss?://')
re_http = re.compile('^https?://')
blockchain_provider = config.get('ETH_PROVIDER')
if re.match(re_websocket, blockchain_provider) != None:
blockchain_provider = WebsocketProvider(blockchain_provider)
elif re.match(re_http, blockchain_provider) != None:
blockchain_provider = HTTPProvider(blockchain_provider)
else:
raise ValueError('unknown provider url {}'.format(blockchain_provider))
def web3_constructor():
w3 = web3.Web3(blockchain_provider)
return (blockchain_provider, w3)
RpcClient.set_constructor(web3_constructor)
run = True
class DispatchSyncer:
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yield_delay = 0.005
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def __init__(self, chain_spec):
self.chain_spec = chain_spec
self.chain_id = chain_spec.chain_id()
def chain(self):
return self.chain_spec
def process(self, w3, txs):
c = len(txs.keys())
logg.debug('processing {} txs {}'.format(c, list(txs.keys())))
chain_str = str(self.chain_spec)
for k in txs.keys():
tx_raw = txs[k]
tx = unpack_signed_raw_tx_hex(tx_raw, self.chain_spec.chain_id())
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try:
set_dequeue(tx['hash'])
except NotLocalTxError as e:
logg.warning('dispatcher was triggered with non-local tx {}'.format(tx['hash']))
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s_check = celery.signature(
'cic_eth.admin.ctrl.check_lock',
[
[tx_raw],
chain_str,
LockEnum.QUEUE,
tx['from'],
],
queue=queue,
)
s_send = celery.signature(
'cic_eth.eth.tx.send',
[
chain_str,
],
queue=queue,
)
s_check.link(s_send)
t = s_check.apply_async()
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logg.info('processed {}'.format(k))
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def loop(self, w3, interval):
while run:
txs = {}
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typ = StatusBits.QUEUED
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utxs = get_upcoming_tx(typ, chain_id=self.chain_id)
for k in utxs.keys():
txs[k] = utxs[k]
self.process(w3, txs)
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if len(utxs) > 0:
time.sleep(self.yield_delay)
else:
time.sleep(interval)
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def main():
chain_spec = ChainSpec.from_chain_str(config.get('CIC_CHAIN_SPEC'))
c = RpcClient(chain_spec)
CICRegistry.init(c.w3, config.get('CIC_REGISTRY_ADDRESS'), chain_spec)
CICRegistry.add_path(config.get('ETH_ABI_DIR'))
syncer = DispatchSyncer(chain_spec)
try:
syncer.loop(c.w3, float(config.get('DISPATCHER_LOOP_INTERVAL')))
except LoopDone as e:
sys.stderr.write("dispatcher done at block {}\n".format(e))
sys.exit(0)
if __name__ == '__main__':
main()